Surf Forecasts:
Les Dunes surf forecast from 28 Aug 2026:
- Best quality surf: Sunday 30 Aug, 8AM (local time) - 5ft (1.6m), 9s period, W swell with onshore winds.
- Most powerful swell: Saturday 29 Aug, 5PM (local time) - 8ft (2.5m), 8s period, WSW swell with 870 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 8AM (local time) - 5ft (1.6m), 9s 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 Sunday (Aug 30) at 8AM. The primary swell is predicted to be 1.6m and 9s period with a secondary swell of 1.1m and 8s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 2.5m 8s and forecast to arrive on Saturday (Aug 29) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Sep 02) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 30th Aug) | 5ft (1.6m) 9s |
| Best Surf | 8AM (Sun 30th Aug) | 5ft (1.6m) 9s |
| Most Powerful | 5PM (Sat 29th Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s talk about what’s on offer at Les Dunes for the next couple weeks.
First off, it’s a tough stretch. From Friday morning August 28th through to Friday September 4th, you can pretty much stay at home. The swell tries to come up around Saturday the 29th with waves hitting 7ft out of the West-Southwest, but the onshore wind is cranking at 25 mph, turning it into a choppy mess. Even the smaller days are blown out. That’s about an 8-day stretch with nothing worth paddling for.
The first sign of life is Wednesday morning September 2nd. It’s tiny – just 2ft from the West, with an 8-second period – but the wind is light and from the North, cross-offshore, so it’s clean. The energy is low (69), so you’ll be scratching for every wave, but if you’re a beginner or just want to wet the board, it’s doable. Crowds here are only sometimes a problem.
The real standout is Saturday morning September 5th. A groundswell from the West-Northwest, 3ft with a 12-second period and moderate energy (293). The wind is light from the North, cross-offshore, and glassy clean. This is the best morning of the forecast. The longer period means better shape and more push, but on a beach break like Les Dunes, that long period can make the waves fat and straight. Still, for a clean, small-wave session, this is it.
After that, it drops back down. Sunday the 6th has clean 2ft waves, but from Monday the 7th through Thursday the 10th of September it’s mostly under 3ft and cross-onshore. There’s a pulse of 5ft from the West-Northwest on Thursday afternoon the 10th, but with a 25 mph onshore wind, it’s lumpy and poor.
Water temp is about 68°F, right on average for the season, so nothing unusual.
Overall, it’s a flat and windy forecast. The only real window to get a clean wave with some push is that Saturday September 5th morning. Mark it on the calendar, but don’t expect much else.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sat afternoon. Warm (max 21°C on Sun afternoon, min 17°C on Fri morning). Winds decreasing (strong winds from the SW on Sat afternoon, light winds from the WSW by Sun morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon afternoon, min 16°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 6 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | W 8 | W 9 | W 9 | W 8 | W 9 | W 10 | W 10 | W 10 | WNW 9 | W 9 | W 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 82 | 197 | 250 | 459 | 870 | 461 | 367 | 359 | 287 | 416 | 452 | 273 | 192 | 216 | 57 | 35 | 84 | 20 | 19 | 18 | 18 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | cross-on | cross | cross-off |
High Tide | 5:48PM4.31m | 6:05AM4.13m | 6:16PM4.41m | 6:32AM4.20m | 6:45PM4.42m | 7:01AM4.21m | 7:15PM4.35m | 7:32AM4.14m | 7:48PM4.18m | 8:07AM3.99m | 8:27PM3.93m | 8:47AM3.76m | 9:14PM3.61m | ||||||||
Low Tide | 11:37AM0.24m | 00:00AM0.09m | 12:11PM0.10m | 00:33AM-0.01m | 12:46PM0.04m | 1:08AM-0.01m | 1:22PM0.07m | 1:45AM0.09m | 2:01PM0.20m | 2:24AM0.29m | 2:44PM0.41m | 3:09AM0.57m | 3:34PM0.69m | 4:02AM0.89m | |||||||
 |  |  |  | |  | | | |  | | | | |  | | | | | | | |
 | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — |
 | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:43 | — |
mm | 1 | 1 | 1 | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 19 | 20 | 20 | 20 | 20 | 21 | 20 | 19 | 20 | 19 | 18 | 19 | 18 | 18 | 20 | 19 | 19 | 20 | 19 |
Feels °C | 15 | 16 | 15 | 15 | 15 | 18 | 18 | 19 | 17 | 17 | 18 | 19 | 17 | 16 | 15 | 16 | 17 | 17 | 19 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | W 11 | — | — | — | W 8 | W 9 | — | — | W 9 | W 10 | W 10 | W 10 | WNW 9 | WNW 5 | W 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 |
| kJ | 49 | 35 | — | — | — | 461 | 367 | — | — | 416 | 452 | 273 | 192 | 216 | 42 | 34 | 51 | 20 | 19 | 18 | 18 |
Swell 2 Height (m) Direction Period (s) | — | W 11 | — | — | — | WNW 9 | — | — | — | — | — | — | — | — | W 9 | W 8 | — | — | WNW 4 | — | WNW 3 |
| kJ | — | 40 | — | — | — | 274 | — | — | — | — | — | — | — | — | 57 | 35 | — | — | 4 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | NW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 10 |
| kJ | — | 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | W 6 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | — | — | W 9 | W 8 | — | — | — | — | — | N 4 | NW 5 | WNW 8 | NW 4 | — | NW 4 | — |
| kJ | 82 | 197 | 250 | 459 | 870 | — | — | 359 | 287 | — | — | — | — | — | 9 | 12 | 84 | 14 | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 226 | 237 | 237 | 301 | 355 | 68 | 22 | 351 | 333 | 68 | 9 | 3 | 9 | 22 | 9 | 0 | 293 | 226 | 180 | 237 | 254 |
Best forecast wave conditions in Vendee | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
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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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