Surf Forecasts:
Les Dunes surf forecast from 29 Aug 2026:
- Best quality surf: Saturday 29 Aug, 11PM (local time) - 7ft (2.2m), 9s period, W swell with cross-onshore winds.
- Most powerful swell: Monday 31 Aug, 11AM (local time) - 7ft (2.1m), 10s period, W swell with 830 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 11PM (local time) - 7ft (2.2m), 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 Saturday (Aug 29) at 11PM. The primary swell is predicted to be 2.2m and 9s period with a secondary swell of 2.0m and 9s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 2.1m 10s and forecast to arrive on Monday (Aug 31) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Sep 02) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 29th Aug) | 7ft (2.2m) 9s |
| Best Surf | 11PM (Sat 29th Aug) | 7ft (2.2m) 9s |
| Most Powerful | 11AM (Mon 31st Aug) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s coming up for the next couple of weeks.
Honestly, it’s a bit of a mixed bag with a lot of onshore wind and poor conditions, but there are a couple of sessions worth getting wet for if you’re patient. The first real chance doesn’t pop up until Tuesday the 1st of September.
The standout is definitely Tuesday the 1st of September morning at Les Dunes. You’ve got a clean 4ft swell from the west with a 10-second period, and the wind is glassy – dead calm. That’s a rare treat. The water is 69°, pretty much average for the time of year. The combined energy is moderate (225), so there’s enough push for a fun session on a longboard or a fish. It’s a beginner-friendly spot, so with those clean conditions, it’ll be a great place to learn. Crowds are possible, so don’t expect solitude.
After that, the first week is mostly a write-off with onshore wind and chop. There’s a tiny window on Friday morning the 4th of September – a 3ft west swell with a really long 13-second period and clean cross-offshore wind. That long period means proper shape and energy, but at a beach break, it might be a bit straight. Still worth a look. The energy is moderate (286).
Looking into the second week, Friday the 11th of September afternoon is promising: a 3ft west swell with a very long 15-second period and clean offshore wind from the ENE. That’s groundswell territory. The energy is strong (435), so there’ll be plenty of punch. It’s a long way out, so keep an eye on it. Saturday the 12th has a bit more size (4ft) with the same long period, but the wind swings onshore, so the morning might be cleaner.
Overall, there’s a few good windows, but a lot of junk to sit through. Keep your eyes on Tuesday morning and that Friday the 11th afternoon.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat afternoon. Warm (max 20°C on Sat afternoon, min 17°C on Mon night). Winds decreasing (strong winds from the SW on Sat afternoon, calm by Tue morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Wed afternoon, min 15°C on Fri morning). Wind will be generally light. | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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) | WSW 9 | WSW 9 | W 9 | W 8 | W 8 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | W 13 | WNW 12 | WNW 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1210 | 505 | 199 | 317 | 413 | 830 | 502 | 320 | 225 | 136 | 78 | 49 | 33 | 19 | 58 | 72 | 87 | 219 | 367 | 308 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | cross-off | cross | cross-off | cross-on | cross-on | cross | cross-off | cross | cross-off |
High Tide | 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 | 9:40AM3.48m | 10:23PM3.26m | |||||||
Low Tide | 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 | 4:35PM0.96m | ||||||||
 |  |  |  | | |  | |  | | | | | | | | | | | | |
 | — | — | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — |
 | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — |
mm | 2 | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 20 | 19 | 19 | 20 | 19 | 18 | 19 | 18 | 18 | 20 | 19 | 19 | 20 | 19 | 16 | 18 | 17 |
Feels °C | 16 | 18 | 17 | 16 | 15 | 16 | 18 | 18 | 19 | 18 | 15 | 17 | 17 | 17 | 19 | 19 | 18 | 14 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | — | WSW 9 | W 9 | — | — | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | W 13 | WNW 12 | WNW 11 |
| kJ | — | 505 | 199 | — | — | 830 | 502 | 320 | 225 | 136 | 78 | 49 | 33 | 19 | 58 | 72 | 87 | 219 | 367 | 308 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 10 | — | — | W 16 | WNW 8 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 45 | 67 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 9 | — | WSW 8 | W 8 | W 8 | W 10 | — | — | — | — | NW 4 | — | — | NNW 3 | — | — | — | — | — | — |
| kJ | 1210 | — | 153 | 317 | 413 | 587 | — | — | — | — | 6 | — | — | 1 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 355 | 68 | 238 | 371 | 353 | 68 | 68 | 3 | 3 | 226 | 22 | 3 | 237 | 180 | 22 | 223 | 22 | 0 | 22 | 3 |
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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