The Pyla dune and the Banc d'Arguin



Arcachon is one of the 23 main French ports defined by the national hydrographic services.
So to draw our tide curves for the Bassin d'Arcachon, we use the official predictions issued by the national hydrographic services.
Therefore the predictions used are those of the port of Arcachon (Eyrac pier)
Here are the coordinates: Latitude 44°40'N / longitude 001°10'W.
The Arcachon-Eyrac tidal zone is delimited by the SHOM. It results both from tradition and from a very ancient observation.
In Arcachon the hydrographic datum is located 6.518 m below the NGF mark (general level of France) located on the facade of the ROC hotel.


In the Bassin d'Arcachon the average tide level is 2.48 meters
By way of comparison, this average level is 6.76 m for the main port of Saint-Malo and 3.20 m for Les Sables-D'Olonne.

Fixes on the tidal zone

SHOM, the reference hydrographic service, defines so-called “attached” ports spread over the Bassin d'Arcachon which require corrections to times and heights in relation to those of the Eyrac pier.
Thus below 3 places of the Basin and the corresponding corrections:
First at Pilat plage: times from – 5 mins (low tide, neap tide) to – 25 mins (high tide, spring tide)
Pilat beach: heights of – 0.20 m to – 0.30 m for the open sea.
Second at Grand Piquey: times from 0 min to + 15 min (high tide, spring tide)
Grand Piquey: heights from – 0.05 m to – 0.15 m
Third in Cap Ferret: times from 0 min (low tide, neap tide) to – 20 min (high tide, spring tide)
Cap ferret: heights of – 0.05 m to – 0.15 m (high tide) and + 0.10 m to + 0.15 m (low tide)
Source SHOM

How are the tides in the Bassin d'Arcachon?

We can say that the Bassin d'Arcachon fully experiences the tides and that this phenomenon has a strong impact on its geography and its ecosystem.

The particularities of the tides in the Bassin d'Arcachon

Description of the Arcachon Bay

First of all, the Bassin d'Arcachon is a semi-enclosed lagoon with very diverse landscapes.
On the side of the La Leyre estuary on the Teich and Biganos side, the landscape is more “Pré-salés style”.
Then many esteys and channels in the lagoon as well as sandbanks, beaches and passes at the level of the opening towards the ocean change according to the tides, the wind and the swell.
Indeed the tides move the sandbanks, modify the passes, and carry millions of M3 of water at each tide.
The delta of the mouth is different according to the rising tide or the falling tide. Therefore it is important to inquire at the harbor master's office to obtain the latest information on the positioning of the sandbanks and passes at the entrance to the lagoon. Obviously this depends on the tide and the period of this tide.

High tide or low tide

At low tide we discover the sand banks of the Bassin d'Arcachon as well as the omnipresent mud, more than 100 km2 of foreshore.
When the sea recedes, it uncovers more than half of the Basin.
The times of rising and falling tides are not the same.
Indeed, it takes longer for the tide to rise, and the slack of high tide is longer than that of low tide.
Evening and winter high tides are always weaker than morning or summer highs.
During spring tide, the tide delays less from one day to the next.
The Bassin is a space in perpetual motion ¡

Disturbing elements

It is necessary to take into account the wind which can modify the values of heights of more than one meter. A strong southwesterly wind can generate significant corrections. Caution !

Low tide in the oyster beds of Cap-Ferret
Photograph of a boat on the sand in front of the Cap-Ferret oyster beds.

The importance of the tides for professionals in the Bassin d'Arcachon

Many of them live from the sea, around 300 oyster farms and a hundred professional fishermen in the Basin.
Oyster farmers must know the tides to be able to work in their oyster beds. They start their barges (flat-bottomed boat) to go to their parks at low tide, time is running out.
The work lasts between 4 to 5 hours at the right time of the tide. The oyster farmers take advantage of the low tide to turn the oyster bags and carry out all their work.
Then you have to leave at the rising tide.
The tide will rise to gradually submerge the Bassin d'Arcachon and the oyster beds.
You can spot the oyster beds thanks to the Pignottes (wooden sticks planted in the sand). They make it possible to locate the parks at high tide and to delimit them.

To the rhythm of the tides of the Bassin d'Arcachon

What to do depending on the tide Ɂ

The bench of Arguin

Start by visiting the vast Banc d'Arguin at the entrance to the Bassin. This sandbank is a natural reserve of blond sand and clear waters. At low tide it extends over 4 km long and 2 km wide, a small island of paradise!
Try to sail on the Basin and head for the ocean. However, before any departure, check the tide times and the coefficient as well as the weather, the wind and its direction and generally know the state of the sea.
Pay attention to the passes!

At low tide

Then visit the oyster beds with an oyster farmer at low tide.
Also go fishing on foot to discover the fauna, flora and other shellfish. But “not touch the oysters”.
If you do not know the territory well, come back as soon as the tide begins to rise.
Note that the Pereire sandbank at low tide is ideal for discovering seagrass beds, seaweed and its entire ecosystem and for starting shore fishing.

The Tchanquées cabins

Finally, discover the island of birds, its Tchanquées cabins and its ornithological wealth. Boats can only approach the huts at high tide.

Tides and weather in the Bassin d'Arcachon

During the change of tide on the Bassin d'Arcachon, the sunshine, the wind and the cloud cover are sometimes brought to turn.
Meteorologists attribute it to 2 local specificities:
At the change of tide, a huge volume of water enters or leaves the Basin. This generates strong sea currents and temperature variations that influence the movement of clouds.
In addition, the Pilat dune at the entrance to the Bassin creates hot air updrafts.
The locals say that the weather in their basin is better than in the region as a whole.

Displays the 2022 tide times

Tide times for Arcachon

The Tide Calendar allows you to visualize at a glance 12 months of tides. This wide-angle visualization makes it possible to better plan and anticipate all maritime activities.
The tide calendar is an essential tool in the Bassin d'Arcachon.
It will be a nice souvenir of your visit to the Bassin d'Arcachon.

Concept The Tides

Our concept is innovative and aesthetic, it dusts off the presentation of predictions.
The title of the calendar corresponds to the tidal zone: BASSIN D'ARCACHON
We draw twelve curves for 12 months of tidal predictions.
The curves are proportional to the tidal coefficients established for each high tide. The coefficients tell us about the relative importance of the tidal range (difference in water height between 2 successive tides, high and low).
The tidal coefficients are plotted on the middle of each curve.
The high tide times and heights are above the curve as well as the day of the week and the date. Dotted lines bring together the 2 daily high tides.
Times and low tide heights are below the curve with day and date. Dotted lines bring together the 2 daily low tides.

A didactic calendar

A child can follow the curve with their finger to visualize and understand the movement of water.

The tides and the moon

The calendar is also a lunar calendar. The phases of the moon are shown there. The link between the phase of the moon and the tidal cycle becomes obvious. Indeed during the new moon and the full moon the curve is wide, the tide is of the spring tide type (the water rises and falls a lot).
During the first or last quarter, the curve is tighter, the tide is of the neap tide type (the water rises and falls less).

Spring and neap tide

At a glance, by looking at the curve on the desired date, you know if the period is spring tide or neap tide. The tidal ranges range from 3.90 m during spring tide to 2.1 m during neap tide.

Zoom on a tidal curve of the Bassin d'Arcachon

High tide periods are highlighted by a yellow bar on the line of tidal coefficients in the middle of each curve.
At a glance, all the high tides of the year and their dates are visible, which makes it possible to plan and anticipate these periods.
By convention in France, high tides exist when the tidal coefficient is equal to or greater than 100 on our coast.
The hours of the calendar are the legal hours in force, summer hours UT + 2h and winter hours UT + 1h in progress.
Heights are expressed in meters. They are expressed in relation to the hydrographic level 0 of the zone. The 0 of the nautical chart to which we add the water height. The water levels are always positive on the French coast because the hydrographic 0 has been positioned at the lowest.

License fee

We specify the reference port of the data used to draw the tide curves at the bottom of the calendar.
Likewise, we carry our license number for the use of official data on the calendar. It is forbidden to reproduce the data and our design without prior permission.

Tide times illustration printed on wood
Tide calendar German, North Sea "Tidenkalender"
Original illustration of all the beaches around the Bassin d'Arcachon, from Petit Nice to the tip of Cap Ferret via Andernos

Exhibit The Tides of the Bassin d'Arcachon

The Tides posters and paintings are carefully printed on matte or light wood paper in the classic 60 x 80 cm format.
Each table and poster bears the title of the tidal zone to which it corresponds.
But Les Marées also offers a choice of content. Why not personalize the Calendar with the recipient's nickname, the name of an unknown little cove in a tidal zone or the name of your family home? Choose your title!
Offer the predictions of the tides of the Bassin d'Arcachon, it is the gift appreciated by all surfers, fishermen, sailors, oyster farmers, swimmers or simple walkers.
The Tide Calendar exists for all the tide zones of the Atlantic coast, the English Channel and the North Sea.

We print on demand, no stock or superfluous manufacturing.
we print on matte paper and on poplar wood from sustainably managed forests.

Rocks and beaches at low tide on the coast



The holidays are fast approaching. And this year, it's decided! You are looking for a Christmas gift for your loved ones that is both a beautiful decorative object, original and useful.

Not so easy to find!

Indeed, what a gift to find for an uncle who fishes in Saint Malo. To your nephew who escapes from Paris when he can to go sailing in Concarneau. What a surprise to offer to your best friend, mad about decoration, who has just bought a small house in Cap Ferret. Or to a sister-in-law who spends her weekends in Le Touquet and is passionate about sand yachting. What an original and trendy present for this cousin married to a German and settled on the coast of Sylt in the North Sea.

And you? You would really like to hang a beautiful souvenir of your summer vacation in your apartment. Oh yes, you will leave as soon as possible for Hossegor, Quiberon, the Bassin d'Arcachon or Honfleur!

What do you all have in common? You are surfers, fishermen, sailors, wind or water sportsmen, swimmers or simple walkers. You are ocean lovers who love to live to the rhythm of the tides!

And what would be your ideal decoration gift? Clearly, this would be a Tide Calendar.

The perfect decorative gift

Striped Tide Calendar 2021 Les Sables-d'Olonne
  • A beautiful object in connection with the ocean.
  • Choice of colors to suit any interior.
  • A table in the ideal format.
  • An intuitive and educational tool designed for all sea users.


Tide forecasts are a valuable and essential tool for all ocean lovers. Béatrice Laborde and Didier Burlat, the creators of the Les Marées brand, are well aware of this. In order to make reading ocean forecasts accessible to everyone, they have designed unique, innovative and aesthetic graphics. It allows you to visualize and understand at a glance a year of tides for a specific area of the coast.

Each summer, this duo prepares with passion the new collection of its Calendars for the following year. They draw the curves of more than 30 specific areas of the French coast. They add those of some emblematic beaches of Portugal, Germany or Great Britain.

The Tide Calendars offer rigorously accurate and complete data from all the main ports on the French west coast thanks to their partnership with SHOM (Service Hydrographique et Océanique de la Marine). In addition, each customer can find his favorite tide zone in the site catalog .

Decorative gift for all tidal areas in Europe
Map of Tide Calendars in Europe


In addition, for the preparation of its new annual collection, the Les Marées team also carefully selects the colors of the backgrounds of their paintings and their posters. Depending on the choice and preferences of their customers, these colors will then be printed on light wood or matte paper.

Thus, thanks to its elegant graphic lines, its range of colors in light shades and its contemporary style, the interiors gain in brightness.

Collection 2021: Resolutely trendy colors

Decorative gift, the Tides 2021 color collection
  • The tangy stripes that bring a touch of pep to your living room
  • The beautiful pastel blue, perfect for brightening up an interior
  • Pink, acclaimed by our customers and at the top of fashion
  • Grey, simply modern and elegant
  • The bright blue, that of the sky above the ocean


Posters and paintings are carefully printed on matte or light wood paper in the classic 60 x 80 cm format. Neither too small nor too big, it is the ideal medium for enhancing interiors and decorating them while keeping legible and useful information.

The tide calendar of Amrum on the North Sea
The tide calendar, a colorful and decorative poster


As we have seen, choice of color and choice of tidal zone to suit all tastes and preferences.

Each table bears the title of the tidal zone to which it corresponds. But Les Marées also offers a choice of content. Why not personalize the Calendar with the recipient's nickname, the name of an unknown little cove in a tidal zone or the name of your family home.

Examples of custom iters for the Tides calendar

This year, no doubt, as an original and useful decorative gift, the Tide Calendar will triumph among all ocean lovers!!

Live to the rhythm of the tides!

Zoom of a curve of the tide calendar
Visual of a tide curve drawn by Les Marées. A month of tide predictions.
Bay of Saint Jean de Luz-Socoa


Meeting at the rhythm of the tides… of Socoa

Does the idea of sharing a bottle of delicious white wine with friends, facing the ocean and in the mildness of a late summer day, inspire you?

And if we told you that this wine has gently been lulled by the tides of the sumptuous bay ofSaint-Jean-de-Luz and that part of its vinification took place at a depth of 15 meters? Maybe you would think it's just a poetic dream.

And yet...

We are devoting this episode of our series "The tides and me" to the Socoa tide calendar with Julien Binet, communication manager of EGIATEGIA, a unique wine in the world. We met him in Saint-Jean-de-Luz, more precisely at the foot of Fort Socoa where the cellar of this wine project like no other is located.

Julien Binet is surfing
Julien Binet. Photo by Amanda Prifti

“Pouvoir perdre son regard à l’horizon, se lever et aller voir de quelle humeur est l’océan, surfer ou aller faire de la plongée tous les jours, ça n’a pas de prix!“, Julien Binet

The principle of ocean winemakingof FACT, "the workshop of truth" in Basque

Before coming back with Julien Binet on how the tides influence the fermentation of these wines, let's start with a bit of history.

Emmanuel Poirmeur, the creator and director of Egiategia, filed in 2007 the patent for vinification and aging of wines under water. This process seeks the physical conditions necessary for the realization of vinification. These are pressure, darkness or thermal inertia. But the essential is the agitation in particular because of the variations of pressure related to the tides.

The following year, Egiategia carried out its first alcoholic fermentations in vats in the bay of Saint-Jean-de-Luz. Emmanuel Poirmeur explained his project to the Journal Le Parisien in August 2018. “ We deposit 15 meters deep about twenty barrels of 300 to 400 liters, which we have redesigned several times to improve their pendular movement. We mix naturally fermented grape juice and the classic second fermentation ingredients: sugar and yeast. After three months, it's the prize de mousse: the still wine becomes effervescent and enriched with various aromas”.

Bottle of white wine DENA DELA
DENA DELA Blanc - Gold Medal at the Concours Mondial de Bruxelles 2019. Photo Julien Binet.
Chai de Egiategia in front of Socoa Bay
Winery of Egiategia in front of Socoa Bay. Photo by Julien Binet.

"The stirring of wine depends in particular on the pressure variations linked to the tides”

À la lecture du calendrier des marées de Socoa – Ciboure – Saint-Jean-de-Luz, le marnage dans la baie est de maximum 5 mètres. Julien Binet nous précise que “par conséquent, environ toutes les 6 heures, les cuves s’enfoncent entre 10 et 15 mètres de profondeur ». De plus, elles s’agitent avec le mouvement des marées. Maintenues par des systèmes de câblages et cordages, ces sortes de corps morts sont ancrés en profondeur.

Boat and barrels of Egiategia in Socoa Bay
Boat and barrels of Egiategia in Socoa Bay in Saint-Jean-de-Luz. Photo Julien Binet

If the movement and calendar of the tides of Saint-Jean-de-Luz are essential in the winemaking process, they have little importance in the activity of the divers who are responsible for handling the vats. “ Scuba divers are professionals employed to install or remove deep tanks. An area where only they can circulate is assigned to them in the bay. In reality, they look more at the incoming swell than at the tides. The ocean has to be calm because it's safer to handle the tanks ”, explains the communication manager of Egiategia.

Futs des vins Egiategia dans la baie de Socoa
Diver in front of underwater vinification barrels in the Bay of Saint-Jean-de-Luz. Photo Julien Binet

Tide forecasts around Saint-Jean-de-luz

Essential for the perfect vinification of the wines of Egiategia, the tides also punctuate the life of Julien Binet. This is why our Socoa – Ciboure – Saint-Jean-de-Luz tide calendar is installed in front of the bay window of his office facing the Socoa “La Bougie” surf spot.

Because indeed, Julien is also passionate about this sport. He explains to us that “ there are two fallback spots in Socoa Bay because the swell is filtered. It's a perfect little wave for beginners or longboarding. But for it to appear, you need at least 3 meters of swell outside the walls of the bay”. Just by looking, and at the height of the water at La Bougie, he knows exactly when to leave his office to reach the wave at the right time and optimize his gliding time. Empirical observation!

“The tide does not wait for the sailor! »

However, he specifies that “ the tide does not wait for the sailor ”. He therefore leaves half an hour before the right moment in order to be ready!

In addition, he often takes his board to seek the wave elsewhere on the coast. He then consults the tide forecasts because this remains decisive in the choice of the surf spot. At high tide, it will be rather Guéthary. At low tide, he likes to go surfing at La Côte des Basques in Biarritz. Finally, to change from the reef waves of the Basque Country, it goes up towards the Landes beaches. They offer him their shorter swells because of the sandbanks, but more tubes.

Another rhythm of tides in Normandy

Julien is Norman and learned to surf at home near Granville. Near there is the area of the French coast where the tides are the highest, such as in the bay of Mont-Saint-Michel. When we ask him where he prefers to surf, he replies enthusiastically “ My favorite playgrounds? Carolles beaches and Siouville ”.

He also tells us that in Normandy, the tide calendar is even more important in his eyes than at Socoa in the Basque Country. I am from Granville and at low tide you have to reach the sea 2km offshore… So after a few disappointments and having always preferred swimming to running, the way the tides work quickly became essential! » .

In this region, you also have to be careful because when the tide rises, the water circles quickly and rises quickly. It is therefore necessary to know the geography of the coast so as not to be trapped.

Share your love of the ocean

Finally, Julien is also an excellent photographer. His favorite domain is obviously the ocean. He shares on his Instagram account his love of waves, surfing and nature. Moreover, he regularly organizes exhibitions in the very pretty cellar of Egiategia.

In addition to most of the beautiful photos that illustrate this article, Julien has also selected the following 4 from one of his recent trips to the end of the world.

Movement of the waves in Srilanka
Movement of the waves in Srilanka
Movement of the waves in Srilanka
Movement of the waves in Srilanka. Photo by Julien Binet
Surfing in Sri Lanka
Surfing in Sri Lanka. Photo by Julien Binet

Finally, when asked what he thinks living near the ocean brings, Julien is categorical. “ I could especially give the negative points to not living near the ocean. I've always lived by the water and I couldn't imagine living anywhere else. Just being able to lose your gaze to the horizon, get up and go see what the mood is in the ocean, surf or go scuba diving every day, it's priceless! ”.

The Tide Calendar according to Julien

How did you know him?

By the friends of Chipiron Surf School in Hossegor, beach of naked bottoms!

What do you like best about the tide calendar?

What I find practical on this calendar is to be able to visualize which tide cycle we are on. At a glance, you can spot where you are and when the next high tides or neap tides will be.

Julien Binet and Beatrice Laborde
Julien Binet and Béatrice Laborde in the premises of Egiategia in Saint Jean de Luz

Who would you recommend it to?

To everybody. From those who need it on a daily basis to those who do not necessarily live near the ocean but who like to have a beautiful decorative object that allows them to imagine their favorite beach or that would remind them of their holidays in Ciboure for example.

Do you want to know more?

JULIEN BINET : FacebookInstagram

EGIATEGIA: Website – Facebook – Instagram

Zoom on the tide forecasts of Socoa – Ciboure – Saint-Jean-de-Luz

SHOM predictions:

  • The predictions used for the calendar are that of the main port of Socoa (Saint-Jean-de-luz) – Pyrénées Atlantiques
  • 43° 53' N / Long. 1° 68' O
  • The Hydrographic Zero and the tide gauge are located at Fort Socoa on the dyke.
2020 Tide Calendar Socoa-Ciboure-St-Jean-de-Luz
2020 Tide Calendar Socoa-Ciboure-St-Jean-de-Luz. Grey color

Characteristics of the Socoa – Ciboure – Saint-Jean-de-Luz tides:

  • Semi-diurnal tides
  • Tidal range among the lowest on the west coast: maximum of 4 meters during spring tides. Maximum height from high sea to 4.80 m.
  • We use this data from Guéthary in the north to Hendaye located on the Spanish border. There is no correction to be made from point to point in this zone.
  • The Spanish coast in the continuity of ours is located in this same tidal zone. No correction for the timetables from Hondarribia located on the border to Santander the capital of Cantabria. It is necessary to make maximum 30 minutes of corrections to the tide times in La Coruña in Galicia.
  • Finally, we use the Socoa timetables for the town of Biscarrosse in the north of the Landes, whose timetables are identical.

The titlesin catalogof the Tide Calendar for the main port of Socoa (Saint-Jean-de-luz):

  • Biscarrosse Beach
  • Guéthary – Cenitz / Parlementia
  • Socoa – Ciboure – Saint-Jean-de-Luz
  • Hendaye – Baie de Txingudi
  • Calendars for the Spanish coast are on demand at the moment (Donostia – San Sebastian / Santander – Cantabria / Gijòn – Asturias…)
Map of the tide calendar zones



Decorative, graphic and always useful for your maritime activities, the tide calendar is the ideal gift for all ocean lovers.

Do you have any preferences? You choose...

  • The look of your tide calendar printed on light wood or poster.
  • Your favorite tide zone : discover all the titles in our catalog . Thanks to our partnership with the national hydrographic services (SHOM), our calendars offer rigorously exact data for all main ports on the French west coast.
  • The title of the table: you can customize it as you wish.
  • If you wish to become one of our resellers in the area, do not hesitate to contact us : contact@les-maré

Live to the rhythm of the tides!

Zoom of a curve of the tide calendar
Visual of a tide curve drawn by Les Marées. A month of tide predictions.
Tide calendar curve for conference poster


Better understand the tides and their mysteries

The tides punctuate the life of the inhabitants of the coast and the practitioners of the ocean. And yet, whether we are simple walkers, sailors, fishermen, yachtsmen, surfers or swimmers, we know very little about this phenomenon . It is to help better understand tides and bores, driven by celestial and oceanic mechanisms, that we participated in a conference organized by Hugo Verlomme. The latter was part of the program dedicated to the Gouf de Capbreton .

For nearly two hours, a large and attentive audience gathered to attend the presentations of three different approaches to this complex and fascinating phenomenon.

Tides and Mascarets conference poster. Created by The Tides
Poster of the Marées & Mascarets conference, Capbreton February 2020. Created by Les Marées.

At the origin of the conference project on tides and tidal bores

Since the beginning of the Tide Calendar adventure, we have had several conversations with Hugo Verlomme on this subject. Over the course of these exchanges, he was sometimes surprised to still have gaps and misconceptions about this phenomenon.

And yet, if anyone is supposed to know the tides perfectly, it's him! Passionate about bodysurfing, he is the author of the first book on surfing in France, and about thirty other works, novels and documents, of which the ocean is the subject. He has always led his life as close as possible to this element, as he recounts in his latest book “La Piste de l'eau” (to be published as soon as possible, but available online).

Living in Capbreton, he is also behind the rediscovery of the Gouf, the famous underground canyon facing the city. For several years, it has been organizing meetings, conferences, actions and federating associations around this theme.

Following his desire to learn more, he asked me if I was ready to participate in the organization of a conference on Les Marées . The subject would start from a simple observation: each of us lives them on a daily basis and we adapt to their rhythm but without asking ourselves more questions than that.

Hugo Verlomme, Conference Tides and Mascarets - Photo Valentine Karwoski
Hugo Verlomme, Conference Tides and Mascarets - Photo Valentine Karwoski
Hugo Verlomme and Béatrice Laborde, Conference Tides and Mascarets - Photo Valentine Karwoski
Hugo Verlomme and Béatrice Laborde, Conference Tides and Mascarets - Photo Valentine Karwoski

Knowing the mysteries of the tides: anecdotes and experiences

En tant que créatrice du calendrier Les Marées, je pouvais exposer mes découvertes et apprentissages ainsi que quelques connaissances insolites et anecdotes étonnantes sur ce phénomène durant l’évènement. De plus, je savais comment partager des “tuyaux” pour mieux comprendre les marées.

Indeed, in order to materialize the idea of offering a table that is both graphic and decorative, allowing you to visualize and understand at a glance a year of tides in a concrete geographical area, we had done a lot of research. Therefore, we had acquired during our three years of existence a lot of experience on this subject.

Now, we also had to find personalities likely to bring other approaches to our audience.

A recognized specialist in the functioning of the tides: Odile Guérin

First of all, we looked for a person specialized in the functioning of the tides and recognized as such. In our preliminary research, we surprisingly found that there were few possible candidates. I then turned to the official partner of our Tide Calendar: SHOM . The Hydrographic and Oceanographic Service of the Navy, located in Brest, establishes the predictions of the tides in France.

Unfortunately, due to the 300 years of this organization, their schedule was already closed for 2020 and they could not detach a speaker for us.

For his part, Hugo had thought of Odile Guérin , a Breton, geologist by training, specialist in the study of coastlines and lecturer. In fact, I had learned a lot about the tides from his books. Hugo contacted her and she immediately agreed to participate in the project.

Not knowing her “style”, we feared that she was too technical. In reality, this was far from the case thanks to his pedagogical way of presenting complex elements. And don't forget his humor!

As an introduction, she gave us some keys to the history of knowledge of the phenomenon of the tides. Then, his intervention was articulated around the four major aspects that punctuate the tides.

4 major aspects that punctuate the tides

  • Astronomical : the different influences and actions of the moon and the sun on the tides; the major seasonal rhythms; the tidal range
  • Mathematics : the universal coefficient calculation formula
  • Geographical : the particularities according to the different tidal zones of the coast
  • Meteorological
Odile Guérin, Conference Tides and Tidal Bores - Photo Valentine Karwoski
Odile Guérin, Conference Tides and Tidal Bores - Photo Valentine Karwoski

“If the tides were only due to the attraction of the moon and 6 hours were the actual time between high and low tide, everything would be very simple! ". Odile Guerin

His clear and colorful explanations, literally and figuratively, allowed us to better understand this complex phenomenon. Similarly, the curves and annual data of our Tide Calendar have made it possible to illustrate his remarks clearly and visually.

Explorer and tidal bore surfer: Antony “Yep” Colas

As the conference was taking place in a surf area , we wanted to interest this audience as well.

This is why it seemed obvious to us to count on Antony “Yep” Colas to finalize the programming. Beyond being a passionate surfer and expert in waves, this adventurer is also a specialist in the tidal bore. This lunar wave goes up the rivers by causing long waves of several tens of kilometers .

And what luck! Antony, who lives in Anglet but who is a great traveler, was present for the date.

Antony Colas, Tides and Mascarets Conference - Photo Valentine Karwoski
Antony Colas, Tides and Mascarets Conference - Photo Valentine Karwoski

As an explorer and surfer of the tidal bores in the four corners of the planet, his intervention focused on this river phenomenon. He accompanied it with short films illustrating tidal bores from all over the world. From his introduction, he shared his passion with us.

“The Mascarets evoke one of the most spectacular parts of the tide. Indeed, when it enters certain estuaries, it will cause a wave of waves that can break for several hours. For a surfer like me, this represents an incredible playground! »

Watch the full conference at this link .
Director Olivier Legrand Get Up movie.

The news of the speakers

You can find the following 4 books in all good bookstores!

Cover of Mermère novel by Hugo Verlomme

The water trail. Aquatic and spiritual itinerary, by Hugo Verlomme

Water like you've never seen it before. Water is not only the most mysterious matter in the universe, the one that conceals the secrets of our origins. It is also the key to our future. Hugo Verlomme offers here, with an all-public book that reads like water. A walk that is both historical, scientific, mythological, but also poetic, literary and playful, to show the marvelous and unusual aspects of water.

Cover of Mermère novel by Hugo Verlomme

Mermère by Hugo Verlomme

With this cult novel, revised and corrected on the occasion of its recent reissue, Hugo takes us into the meanders of an oceanic world overflowing with adventures and wonders. An ecological fable that has lost none of its strength or its poetry; an ode to our mother the sea, to tolerance and respect for everyone.

And more: Facebook

Cover of the book by Odile Guérin, All about the tides

All about the tides by Odile Guérin

With scientific rigor and a concern for popularization, this pretty illustrated and practical guide makes it possible to understand in a simple and concrete way the functioning of the tides thanks to numerous examples.

Cover of Mascaret, prodigy of the tide by Antony Colas

Tidal Bore, Prodigy of the Sea by Antony Colas

For a scientist, a tidal bore is a tidal surge. A surfer or a kayaker sees it as a long soft wave that breaks (or not) for tens of kilometers. A poet describes it as an incredible encounter between flowing fresh water and backing up salt water. And for you, it's a wave that rises at the high tides of certain rivers whose mouth forms a shallow, funnel-shaped estuary.

And more: Facebook

A calendar and a decorative object for surfing

The Tide Calendar for Hossegor – Capbreton – Seignosse

Decorative, graphic and always useful for your maritime activities, the tide calendar is the ideal gift for all ocean lovers.

  • In posters or printed on light wood, you can find it for all the main tidal ports on the French west coast.
  • Our local dealer may have a different and exclusive tide calendar title.
  • We can customize the title of your calendar.
  • Discover all the titles in our catalog .
  • Choose your tide calendar
Photo of Hossegor beach


Encounters at the rhythm of the tides

Whether you are a simple visitor, vacationer or resident of the coast, each of us has his own story to tell about the tides. And of course, like the perpetual motion of the ocean, these stories are always different, changing and unique.

In order to share some of them with all lovers of this phenomenon, we offer you a series of articles and interviews. These will be written to the rhythm of our walks and our encounters in the different tidal zones.

Who better than Chloé Delanoue, a fine connoisseur of the Landes and the Basque Coast and an essential prescriber of what this coast can offer us in terms of unusual and different activities, to initiate the series " The tides and me "?
Chloé tells us about the tide calendar of Hossegor – Capbreton – Seignosse.

Photo of Chloé Kindabreak at Santocha Beach

Chloé Delanoue: “L’océan bouge et est en perpétuel mouvement, un peu comme la vie. Je trouve ça fascinant !” 

Hossegor, cradle of the tide calendar

Chloé is a young journalist with a taste for lifestyle and board sports, especially surfing , and has always been passionate about the Landes and the Basque Country. Curious about all the news and on the lookout for the latest trends, she had the idea 7 years ago to share her tips and lovely discoveries on the KINDA BREAK website, a blog of good addresses in the Landes and Basque Country for visitors who have come on a getaway for a few days on the coast and for the inhabitants of the region.

She presents her site as is a sharp selection of discoveries and unusual addresses in the Landes and the Basque Country” . Without trying to reference everything exhaustively, it “makes an eclectic selection of real favorites”. Then, she recommends it to her readers as she would to friends passing through here.

And she was very right because Kinda Break, relayed by more than 30,000 followers on Instagram and on Facebook, has now become THE reference for good tips and good addresses in the southwest.

Chloé lives with her family in Seignosse in the Landes. It is the same tidal zone as Hossegor , historical cradle and first inspiration of the Tide Calendar. It therefore seemed obvious to us to begin our series of interviews at the rhythm of the tides with her.


TIDES – Since when do you consult tide predictions?

CHLOÉ – Since always or almost! I live with my two (grand) children and their dad in Seignosse in the Landes, near Bourdaines beach. In addition, I practice surfing and stand-up paddle in the area. In short, the tides have punctuated my life for a long time! This is the fifth year that we have the Hossegor – Capbreton – Seignosse Tide Calendar displayed at home, which has enabled us to get into the habit of following them even more regularly.

'Living by the sea, knowing the daily tide schedule allows us to stay in touch with the ocean'

TIDES – For which activity do you need to know the tides the most?

CHLOÉ – Above all, I need to know the times and the coefficients of the tides to know when the optimal conditions for surfing will be. I think we've all experienced the flop of arriving at a spot to surf and not hitting the right tide! I also very often look at the Tide Calendar to go stand-up paddling at high tide on Lac d'Hossegor . If you arrive at low tide, you will find yourself stuck in mud and seaweed with no depth of water to paddle!

TIDES – How often do you watch the predictions?

CHLOÉ – Since we have the Tide Calendar at home, I would like to say every day! It has become a habit living by the sea. Indeed, knowing the schedule of the tides of the day allows us to stay in touch with the ocean.

I also really like to watch the full moons, as soon as we have a child who is not very well behaved, we say to ourselves: “That's for sure! It's a full moon, go check the Tide Calendar! ".

Hossegor beach at low tide and its surfers
Santocha beach in Capbreton, a beautiful summer day at low tide. Photo Marjory Bokeh

Tides for all tastes

THE TIDES – Your favorite beach? At what time of the tide do you frequent it?

CHLOÉ – My favorite beaches are Seignosse les Bourdaines or Agreou because they are the closest to us. For children, I like to go there preferably at low tide, I know that for them it will be more pleasant and safer to play on the edge in the small natural pools.

Afterwards, of course, we watch the tides above all for surfing. The ideal is at mid-rising or falling tide for Seignosse and the bigger the coefficients, the more the surfing slot will be reduced.

TIDES – Do you have any tidal stories to share with us?

CHLOÉ – I think we've all happened to go to the beach with the kids to swim and wade along the water's edge and come across a high tide with shore-break and waves crashing on the shore. No more way to get in the water! Or even to imagine settling down on the beach to rest and coming across a big coefficient and a full high tide, which means a very small space available and everyone piled on top of each other!

THE TIDES – Finally, what else could you tell us about the phenomenon of the tides?

CHLOÉ – Tides are a phenomenon that remains very intriguing. It offers the ocean an incredible diversity of playgrounds as well as landscapes and atmospheres. The ocean moves and is in perpetual motion, a bit like life. I find it fascinating!

Do you want to know more?

KINDA BREAK : Website – Facebook – Instagram

Contact : Chloe Delanoue – –


The title of the tide calendar can be personalized. Single calendar


The predictions used are those of the main tidal port of Boucau-Bayonne (Pyrénées-Atlantiques)
Lat. 43° 53′ N / Long. 1° 51′ W


  • Semi-diurnal tides – the lowest tides on our west coast.
  • In periods of spring tide maximum 4 meters of tidal range – Height of high tides maximum 4.80 meters.
  • We use this data from Bidart in the south in the Basque Country to Mimizan in the north of the Landes.
  • There are very few corrections to be made from point to point in this area.


  • Biarritz-Anglet-Bidart
  • Vieux-Boucau – Messanges – Moliets
  • Contis plage
  • Littoral du Marensin
  • Mimizan Beach
Hossegor on our map of the French coast
Map of tide zones from the tide calendar. Hossegor area.


  • Our local dealer may have a different and exclusive tide calendar title.
  • We can customize the title of your calendar.

Live to the rhythm of the tides!

Zoom of a curve of the tide calendar
Visual of a tide curve drawn by Les Marées. A month of tide predictions.
Low tide in the oyster beds of Cap-Ferret


How to read the tide calendar, this essential tool in most coastal areas?

The tide calendar is essential on our coast from north to south, from the North Sea to the Atlantic Ocean via the English Channel.
The tide calendar directly gives the times and heights of high tides and low tides
as well as tidal coefficients .
We live on this coast to the rhythm of the tides and all our activities related to the ocean are impacted by this phenomenon.
Consequently in Boulogne sur Mer, Saint-Malo or La Rochelle, inhabitants, visitors and holidaymakers must be aware
tidal predictions. This is for practical and security reasons.
The tide calendar is the companion of surfers, surfers, fishermen, navigators.

Whether you are sea professionals, shellfish collectors or simple swimmers, the tide calendar will guide you!


In France, it is the SHOM (Hydrographic and Oceanographic Service of the Navy) whose mission is to carry out tidal forecasts for 21 main ports on the western seaboard.
SHOM also offers predictions for more than 150 so-called attached neighboring ports.
However the predictions can be modified by a change in atmospheric pressure and by the strength and direction of the wind.
We are partners of SHOM, in this respect we benefit from a license to use these rigorous data which cannot be reproduced without prior authorization.
The license number is printed on each calendar.
Our work is a creative work that may not be used and reproduced without our permission ©

Tide calendar

how to read the tide calendar


Notice of the tide calendar

How to read the tide calendar

A year of predictions for a main port on the coast

How to read the tide calendar from top to bottom:
The reference year of the tide calendar
The title of the coastal zone
Time markers: days, dates and months.
The 12 curves which represent the predictions of the 12 months of the year.
Our signature, license number and reference port .
Information on timetable corrections if necessary.

For exemple :
On the tide calendar for Paimpol-Bréhat, these are actually the tide times for Paimpol ( port of reference ).
For L'Île d'Oléron, these are the tide times for La Rochelle – La Pallice ( reference port ). No time corrections.
Finally on the tide calendar of Granville – Chausey , these are the times of Saint-Malo ( reference port ). Information on timetable corrections is provided.

A lunar calendar

It is impossible to carry out this tide calendar without highlighting the preponderant role played by the moon on the perpetual movement of ebb and flow of the waters!
This calendar is a lunar calendar with the clearly visible phases of the moon which impose their rhythm and the tide periods .


Zoom of a curve of the tide calendar

A curve is a month of tide forecasts ! How to read the tide calendar in detail?

Hours and heights in white color

The times of high tide and the heights of high tide, i.e. 2 high tides per day, are placed above the curve.
The times of low tide and the heights of low tide , i.e. 2 low tides per day, are placed below the curve.
There are therefore 4 extremums per day because our tides are of the semi-diurnal category.

Then let us specify that the tide calendar is established in legal hours and that the heights of water are expressed in meters.
The water levels are counted according to the hydrographic datum of each main port, that is to say the lowest possible tide level.

Dates underlined with dotted lines

On either side of the curve, the dates frame the times and pitches. The dotted lines make it easy to read and link the data for the same day. Long dotted lines for the 2 high tides and the 2 daily low tides.
About 4 times a month the dotted lines are shorter because there is only one high tide or one low tide during the day. This is due to the rotation of the earth and the lunar day which is shorter than our 24 hour day.

The tidal coefficients positioned in the central line on the curve

They tell us about the tidal range , that is to say the importance of the rise and fall of the water or the difference in level between a low tide and a successive high tide !
In full moon and new moon , it is a spring tide period ( coefficients from 70 to 120), the water rises a lot and falls a lot. The tidal range is important.
In the first and last quarter, it is a neap period ( coefficients below 70), the water rises and falls little. The tidal range is low.
These 2 periods alternate regularly from one week to another following the rhythm of the lunar phases.
We will devote a whole article to the notion of coefficient .

The curves proportional to the tidal coefficients

The curve is wide, the coefficient and the tidal range are high: Vive-Eau
The curve is narrow, the coefficient and the tidal range are low: dead water
At a glance we know which period we are in: Vive-Eau or Morte-Eau.

High tides highlighted

As these are highlights on the coast, we materialize them with yellow color bars that can be spotted at first glance.
The high tides are positioned on the widest curves during the new moon or full moon period.
According to the SHOM convention, high tide is the moment when the coefficient is equal to or greater than 100.


  • The tide calendar is also an annual calendar and a lunar calendar.
  • The tide data is complete, official and rigorously accurate.
  • The tide calendar achieves the feat of being a useful and aesthetic support at the same time and thus it is proudly displayed like a painting.
  • The global visualization of a full year of ocean tide allows the anticipation and planning of all our maritime activities.
  • It is didactic because its simple reading and its easy comprehension make it possible to transmit to a child the mechanisms of this phenomenon.
  • Beyond the content, the tide calendar gives meaning to your interior decoration, resolutely connected to the ocean and to your heart tide zone.
  • 5 colors available to bring color to your wall decoration .
  • 2 catalog printing supports: paper and wood. Wood is our premium medium . The tide calendar becomes a real decorative object. It will take on its full meaning within your wall decoration . Wood is a renewable, reusable, recyclable and biodegradable material.
  • Au carrefour des pratiques avec l’océan et de la décoration, il est fait pour les « amoureux de l’océan » et les « déco-addicts »
    Loin de l’océan, avec le calendrier vous pouvez toujours continuer à rêver ! »
  • Le concept des calendriers des marées est un support de communication pour les professionnels de l’océan. Il se décline sur divers supports en formats variés. “Contactez-nous pour vos projets, nous adorons collaborer”

Nous espérons que cet article “comment lire le calendrier des marées” vous a aidé !

Read the tide calendar

"With the calendar, live to the rhythm of the tides!"

Photo of Alice facing the ocean


Alice Delineau kayak

Name : Alice Delineau

Origin : French

Profession : Student

Particularity : Travel addict

Motto : “One day I was born, since I improvise”


Alice and the tides: “I've always needed a tide calendar. As a child, I used to go to the beach with my landing net at low tide to fish for Capbreton shrimp. Growing up, I started surfing so I was dependent on the tide to ride the waves. When I lived in Australia, I watched the tides to go scuba diving. The Tides calendar is an essential tool for me! At a glance I know exactly at what level the ocean is, it's very practical. I prefer it to the little notebooks that I was constantly losing.”

It was Alice and the Tides!

Alice on a boat in Sicily

The Tides as a painting

2021 tide calendar for Hossegor Capbreton Seignosse
Hossegor lake in summer


Béatrice, you are the creator of the brand Les Marées...

Can you tell us about the tides in 5 questions?

A modern calendar for the tides and phases of the moon
Surf lifestyle tide calendar by An Lalemant

Surf lifestyle tide calendar by An Lalemant

Béatrice, can you explain to us how the tides work?

There is a lot of documentation on this phenomenon mainly linked to the stars and especially to the moon. The SHOM website (hydrographic and oceanographic service of the navy) explains it very well.

On our side, we are going to approach the subject of the tides in 5 questions and to put it simply, the great masses attract each other, the moon is the dominant star which attracts the mass of water on the earth, according to their respective position.

This is why the tide calendar is also a lunar calendar with the phases of the moon clearly visible.

 The main lines to know, if we have to explain to a child?

There are 4 extremums per lunar day, i.e. 2 low tides and 2 high tides per lunar day . Every day the sea rises and falls twice.

As this lunar day is a little less than 24 hours, a shift is regularly established and in this case, you can see particularly well on our calendar that there are only 3 extremes left in a day (4 times a month) . For example 2 high tides and 1 low tide (or vice versa)!

It is always necessary to check which time unit is used and whether the winter and summer time corrections have been made or not. 

The heights of water are expressed in meters and different all along the coast, the heights are much more impressive in Saint-Malo than in Biarritz for example. 

In France beyond meters, we rather use the concept of tidal coefficient which indicates the importance of the tidal range (the difference in level between a high tide and a consecutive low tide). Our curves are also proportional to the coefficients to identify at a glance the importance of the tidal range.

Are the tides on the French coast regular and similar?

Founder of the tides Béatrice Laborde

Yes they are rather regular, it is the fact of astronomy, the rotation of the earth and the movement of the moon. So the rhythm of the tides is regular, the daily shift. However, when the tide is low in Socoa , it is high in Dunkirk for example, because the geographical positioning is different.

And no, they are not alike at all! Already just on our coast between the heights of Mont Saint-Michel or Arcachon nothing to see. Likewise, they are not the same hours.

Beyond the astronomical mechanics, the geography of the coast will play and the depth of the waters too. So each zone has its specificities, its hydrographic level 0 … We therefore need to produce as many calendars as there are main tidal ports!

This will be the subject of other articles depending on my walks along the coast.


Are some tides higher than others?

Yes, let's say it's a second rhythm that must be taken into account. Periods of spring tide (high tidal range) alternate with periods of dead water ( low tidal range).

Look at the coefficients on the calendar, when the moon is full or new, the curve widens, it is a spring tide period.

Conversely, the curve narrows during neap tides at the time of the first or last lunar quarter. We really see the impact of the moon on the tides!

Béatrice, can you tell us about the high tides?Tide calendar green poster in living room

It's a period of spring tide as you might expect, but much more! The high tide necessarily occurs during a full moon or a new moon .

Thanks to the Franco-French notion of coefficient , and yes we are the only ones to use this notion, it is by convention decided that high tides occur from a coefficient of 100 and beyond (maximum 120). These highlights are highlighted on our calendar with yellow bars.

The sea rises very high and falls very low. This very important parameter must be taken into account...

Ah you should know that the tidal coefficient is the same on all our coast and is defined for Brest at the start. Arcachon, La Baule or Le Touquet same coefficient!

Who makes tidal predictions? Are they reliable?

C’est la mission officielle du SHOM en France. Il y a 21 zones de marées principales sur la façade ouest de notre littoral incluant des dizaines de ports dits “secondaires”. Le SHOM calcule à l’avance les heures, hauteurs, coefficients… Et les propose ensuite aux différents acteurs de l’océan.

The predictions are quite reliable: the hydrographic services have known for a long time to predict the tides, however it is necessary to take into account the variations in atmospheric pressure or the wind conditions which come to thwart them.

And then the calendar is also a decorative object!

Yes useful and decorative! that was my goal, you can proudly display it in your home and be connected to the ocean ☺

We are far from having covered the question, but we must leave room for other articles to come.

Thanks to Alice for this interview the tides in 5 questions!

Have a nice day at the unchanging rhythm of the tides!

Shooting: An Lalemant / At my resellers: Surfin Estate and Private Space in Hossegor.

Founder of the tides Béatrice Laborde


The concept of the Les Marées brand

The title of the tide calendar can be personalized. Single calendar

Béatrice, you are the creator of the Les Marées brand. Where did you get the idea for the large format tide calendar?

It was only when I realized that many people did not know the phenomenon of the tides, or could not read the tables with figures distributed by tourist offices that I said to myself that I had to find another support.

I knew how to read these tables because the figures do not frighten me, and I liked to explain them also because, living on the coast, the predictions of the tides are essential for a large number of activities. So I decided to implement a more visual medium that is easier to read for ocean lovers.

A good diagram is worth more than a long speech ” according to the well-known adage!

What did you notice when you were working opposite the Hossegor marine lake?

This lake lives to the rhythm of the tides, sometimes the water is very advanced towards the shore, it is high tide and sometimes there is almost no water left, it is low tide.

It was also at this time that the tourists were the most surprised and sorry to see that we had no more water in our lake… Surely due to global warming ☺

The other recurring question was whether we were in the rising or falling tide phase and at what time the water in the lake would be at its lowest?

Finally, the highlight that impresses and interests is “ when are the next high tides ? »

Most people coming on vacation to the Atlantic know what the tides are as a natural phenomenon, since the ocean rises and falls at its own pace and this with a greater or lesser amplitude… This rhythm impacts all our ocean activities !

Hossegor lake and its pines

Knowing how to read tide predictions is therefore essential when you live on the coast?

Exactly ! These famous notebooks are quite airtight and they are constantly misplaced because of their size… There is also consultation on the net which is practical. But that didn't suit me because I wanted to be able to visualize further than the next 3 days at a glance while using an educational object.

Surfers, fishermen and navigators appreciate the wide angle vision which allows them to plan and anticipate their next session several days in advance for example.
Moms and dads are happy to be able to decipher reading predictions with their children and explain the basics to them.
And then even to walk on wet sand at low tide, you have to know what time it is possible ☺

The photo of Béatrice, creator of the Les Marées brand, was taken by the talented Céline Hamelin for the JacksPaper magazine published by Caroline for the Jacks Burgers restaurants in Capbreton, Hossegor and Soustons (Landifornia)