Surf Forecasts:
Les Dunes surf forecast from 2 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 8AM (local time) - 4ft (1.2m), 10s period, W swell with cross-onshore winds.
- Most powerful swell: Monday 7 Sep, 5PM (local time) - 4ft (1.2m), 12s period, W swell with 413 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 2AM (local time) - 2.5ft (0.7m), 8s period with W swell.
Best Forecast Surf Conditions for Les Dunes this week:
The surf forecast for Les Dunes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 04) at 2AM. The primary swell is predicted to be 0.7m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 1.2m 12s and forecast to arrive on Monday (Sep 07) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Sunday (Sep 06) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 4th Sep) | 2.5ft (0.7m) 8s |
| Best Surf | 8AM (Tue 8th Sep) | 4ft (1.2m) 10s |
| Most Powerful | 5PM (Mon 7th Sep) | 4ft (1.2m) 12s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what we’ve got coming up.
Honestly, it’s a pretty lean stretch ahead, with nothing to get too fired up about for quite a while. We’ve got a long, quiet gap right at the start, with no real surf to speak of through the first few days. The first glimmer of something rideable shows up on Saturday the 5th, but even then, it’s just barely surfable.
For the most part, Les Dunes is dealing with a lot of cross-onshore or just messy wind, and the swell energy is weak for days. The combined energy values are tiny—down around 35 to 73—for the first half of the week, which is barely a ripple. Water temp is sitting at 69°F, which is about average for this time of year.
The best-looking window, and really the only standout in the whole 16-day forecast, is on Sunday morning, September 13th. That morning we’ve got a tiny, glassy window with a light offshore breeze from the east—3 mph, dead calm, like a mirror. Swell will be around 3 ft out of the west, with a 12-second period. The combined energy reading of 293 is moderate, so there’s some push behind it. The sets will be clean, the surface will be like glass. For a beginner-friendly spot like Les Dunes, that’s about as good as it gets. Expect a few other folks out there, as it can get a bit of a crowd, but for that kind of morning, it might just be worth it.
After that, the swell picks up a bit, but the wind turns ugly again, and by the middle of the second week, the swell gets too big for this break—over 5 ft and up past 8 ft by the 17th. That’s expert-only territory at Les Dunes, and with strong cross-offshore winds, it’s just not the call for a standard paddle session, even if the numbers look big. That kind of setup with a beach break and strong wind feels more like a kite day.
So, to sum it up: there’s a long dry spell, then a very brief, clean little moment on the morning of the 13th. That’s your best bet. Everything else is either blown out, too small, or too big for the spot.
Stay patient, and keep an eye on the forecasts—things can change.
Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Fri afternoon, min 17°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Sun afternoon, min 16°C on Sat morning). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | W 8 | W 8 | WNW 8 | WNW 8 | W 8 | W 8 | W 8 | W 9 | WNW 9 | WNW 9 | WNW 11 | WNW 12 | W 11 | W 10 | W 9 | W 13 | W 12 | W 11 | W 10 | W 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 33 | 19 | 58 | 57 | 61 | 68 | 73 | 77 | 115 | 153 | 147 | 82 | 47 | 103 | 176 | 413 | 246 | 240 | 136 | 135 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross | cross | cross-off | off | cross-off | cross-off | cross-off | on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-off |
High Tide | 8:07AM3.99m | 8:27PM3.93m | 8:47AM3.76m | 9:14PM3.61m | 9:40AM3.48m | 10:23PM3.26m | 11:13AM3.24m | 00:45AM3.11m | 1:32PM3.31m | 2:26AM3.31m | 2:51PM3.63m | 3:29AM3.62m | 3:47PM4.00m | 4:18AM3.93m | |||||||
Low Tide | 2:44PM0.41m | 3:09AM0.57m | 3:34PM0.69m | 4:02AM0.89m | 4:35PM0.96m | 5:09AM1.16m | 5:52PM1.13m | 6:29AM1.26m | 7:18PM1.08m | 7:51AM1.11m | 8:35PM0.80m | 8:59AM0.79m | 9:35PM0.44m | ||||||||
 |  |  | | | | | | | | |  | | | | | | |  |  |  | |
 | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — |
 | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 |
Temp °C | 18 | 19 | 18 | 19 | 20 | 20 | 21 | 22 | 20 | 18 | 26 | 27 | 25 | 30 | 26 | 19 | 19 | 18 | 19 | 19 | 18 |
Feels °C | 16 | 17 | 17 | 19 | 20 | 20 | 22 | 21 | 19 | 16 | 23 | 24 | 22 | 28 | 24 | 18 | 16 | 14 | 16 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | WNW 8 | WNW 8 | W 8 | W 8 | W 8 | W 9 | WNW 9 | WNW 9 | WNW 11 | WNW 12 | W 11 | W 10 | — | W 13 | W 12 | W 11 | W 10 | W 9 | WNW 9 |
| kJ | 34 | 33 | 19 | 58 | 57 | 61 | 68 | 73 | 77 | 115 | 153 | 147 | 82 | 47 | — | 176 | 413 | 246 | 240 | 136 | 135 |
Swell 2 Height (m) Direction Period (s) | — | — | W 10 | — | — | — | — | — | — | W 12 | WNW 14 | — | SE 4 | SSE 3 | W 17 | W 9 | — | — | — | — | — |
| kJ | — | — | 2 | — | — | — | — | — | — | 69 | 36 | — | 3 | 2 | 6 | 23 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 9 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 3 | WNW 2 | WNW 3 | — | — | — | — | — | NW 3 | NNE 3 | — | ENE 3 | SE 4 | S 3 | W 9 | WNW 5 | — | WNW 4 | — | — | — |
| kJ | 1 | 1 | 2 | — | — | — | — | — | 6 | 2 | — | 4 | 2 | 3 | 103 | 24 | — | 29 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 237 | 237 | 67 | 22 | 0 | 9 | 22 | 6 | 0 | 0 | 3 | 3 | 22 | 158 | 172 | 353 | 22 | 68 | 68 | 22 |
Best forecast wave conditions in Vendee | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Les Dunes Surf forecast
The above surf forecast table for Les Dunes provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Les Dunes can be found by selecting the local surf guide option on the grey menu. Our Les Dunes surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Les Dunes) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Les Dunes may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Les Dunes is 8 km (5 miles) from Les Sables-d'Olonne. If you plan a holiday in Vendee, look for hotels and other accommodation in Les Sables-d'Olonne. Les Sables-d'Olonne has rooms for a wide range of budgets as well as car hire and transport links.
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