Saint-Malo's spring-equinox tides
Updated on 25 July 2026
Every year around 20 March, the coefficient peaks in Saint-Malo with the spring-equinox tide — one of the year’s highest. This is the one that fills the seafront hotels and brings out the photographers, because March adds what summer never provides: low raking light and the last of the winter swells. The module at the top of this page shows the next occurrence to come; the most recent, from 19 to 22 March 2026, peaked at 104.
What a day of the episode looks like
At high water, the sea rises to within touching distance of the top of the Sillon wall. Given swell and a westerly wind, waves come right over it — the plumes of spray the town is famous for. In calm weather, the sheer level is already something.
Six hours later the bay has emptied by several hundred metres. You can walk dry-shod to Grand Bé and Petit Bé, foragers head out with buckets and rakes, and the foreshore uncovers its mussel beds. Then the flood returns, and the cycle starts again for the evening.
Where to stay on those dates
The closer your room is to the sea wall, the more of the episode you get — nights included, when you can hear the swell through closed windows. The Sillon hotels sell out months in advance for these dates, which every regular has pencilled in. Intra-Muros makes a good base five minutes’ walk away; Paramé runs along the same dyke for less.
The booking module at the top of this page is set to the dates of the next occurrence. If your plans are flexible, book the room before anything else: in March there will always be a table for dinner, not necessarily a sea view.
Take care
The equinox tides account for a good share of the year’s accidents: walkers cut off by the flood, onlookers too close to the wall on swell days. Check the official SHOM tide times before going onto the foreshore, leave a real margin for the walk back from Grand Bé — and if the sea does leap the wall, watch it from a safe distance, behind shelter.
Spring tides 2026 in Saint-Malo
| Dates | Max coef. | Season |
|---|---|---|
| 19–22 March 2026 | 104 | spring equinoxequinox |
Dates and coefficients are indicative. Always check the official SHOM tide times before heading onto the foreshore.Official tide times (SHOM) ↗
Will the sea leap the wall?
Forecast closer to the dates
Too early to forecast swell and wind: reliable forecasts cover about 7 days. Come back closer to the date.
A qualitative, heuristic estimate — never a guarantee: nature does what it wants. Swell and wind forecasts: Météo-France (Licence Ouverte).
Official tide times for Saint-Malo
Tide predictions provided by SHOM (French national hydrographic office).If the widget does not load, the official tide times remain available below.
When does the spring-equinox tide happen in Saint-Malo?
Every year around 20 March, with one of the highest coefficients of the year. The dates and coefficient of the next occurrence are shown at the top of this page and in the calendar; the 2026 occurrence ran from 19 to 22 March, coefficient 104, followed by an even stronger April episode on 17–19 (105). The precise times of high and low water change daily: check the official SHOM widget on this page.
Does the sea break over the Sillon sea wall at the spring equinox?
A high coefficient sets the stage, but the show also needs swell and a west-to-northwest wind — that only firms up a few days ahead. Our “will the sea leap the wall?” index activates as the dates approach. If it happens, watch from a safe distance, behind shelter — never from the sea wall itself.
Where should I stay for the spring-equinox tide?
Facing the sea, on the Sillon dyke: that is where you experience the tide from your room. Late March is outside most school holidays, but sea-view rooms go fast for the equinox — book several weeks, ideally months, ahead.