Surf Forecasts:
Les Dunes surf forecast from 26 Aug 2026:
- Best quality surf: Saturday 29 Aug, 11PM (local time) - 7ft (2.2m), 8s period, W swell with cross-onshore winds.
- Most powerful swell: Saturday 29 Aug, 11PM (local time) - 7ft (2.2m), 8s period, W swell with 666 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 5AM (local time) - 1.5ft (0.5m), 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 (Aug 28) at 5AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.5m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 2.2m 8s and forecast to arrive on Saturday (Aug 29) at 11PM. 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 (Aug 26) at 5PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 28th Aug) | 1.5ft (0.5m) 8s |
| Best Surf | 11PM (Sat 29th Aug) | 7ft (2.2m) 8s |
| Most Powerful | 11PM (Sat 29th Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
G'day, Rusty here. Look, I'll be straight with you – the next couple of weeks are a bit of a write-off for Les Dunes. We've got a solid 16-day window ahead, but the first few days are just a tough slog. From Wednesday the 26th of August right through to the end of the first week, it's pretty much all poor surf conditions. The wind is mostly cross-onshore or onshore, and the swell is all over the place – small, short-period, and messy. We're looking at weak energy, with values around 29 to 29 for the combined energy of all swells directed here, so nothing to get excited about. The water temperature is about 69°F, which is pretty normal for this time of year, so at least you won't need a thick wetsuit.
The first real standout doesn't come until Saturday the 5th of September. That morning, the swell picks up to 4ft from the W with a long 12-second period, and the combined energy of all swells directed here jumps to 579. The wind is a light onshore from the WSW, and while the forecast flags it as too big for the break, it's the best energy we've seen all week. If you're an experienced surfer and you're prepared for a bit of punch, this could be your window. It's a fairly consistent spot, but it's a beginner break, so watch out for the power.
After that, it's more of the same until Wednesday the 9th of September. That morning, we finally get a clean window with a light offshore wind from the NE, swell at 2ft from the W, and the combined energy of all swells directed here at 62. It's small, but it's the only real clean surf in the whole run. The water's still about average temp.
Then, on Thursday the 10th of September, the morning looks promising again. Swell is 4ft from the W with a long 12-second period, and the combined energy of all swells directed here is 332. The wind is a light cross-offshore from the E, which is perfect for cleaning things up. Again, it's flagged as a bit big for the break, but if you're keen, it's the best conditions we've got in the second week. The water temp is still around average.
Overall, it's a tough couple of weeks. Only a couple of days look worth paddling out, and they're both for the more experienced crew. Don't hold your breath for clean, long rides – it's just not happening.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Thu night. Warm (max 25°C on Wed afternoon, min 16°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the WSW by Sat morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 20°C on Sat afternoon, min 18°C on Mon night). Winds decreasing (fresh winds from the SW on Sat afternoon, calm by Tue morning). | |||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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) | WNW 9 | WNW 8 | WNW 8 | W 7 | WSW 7 | WSW 6 | WSW 7 | W 10 | WSW 5 | WSW 7 | W 8 | W 10 | W 10 | W 8 | W 9 | W 9 | W 10 | W 10 | W 9 | W 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 16 | 13 | 12 | 106 | 34 | 96 | 102 | 89 | 90 | 428 | 461 | 484 | 417 | 387 | 614 | 390 | 314 | 225 | 133 | 78 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | on | cross-on | cross | on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 4:53PM3.92m | 5:10AM3.82m | 5:21PM4.14m | 5:38AM3.99m | 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 | |||||||
Low Tide | 10:51PM0.52m | 11:02AM0.46m | 11:26PM0.27m | 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 | |||||||
 |  |  |  |  | |  |  |  | | |  | |  | | | | | | | |
 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — |
 | 8:58 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — |
mm | 3 | 1 | 1 | 1 | 5 | 3 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 20 | 21 | 21 | 19 | 20 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 20 | 19 |
Feels °C | 22 | 26 | 19 | 20 | 21 | 15 | 16 | 16 | 17 | 16 | 17 | 20 | 18 | 17 | 18 | 18 | 19 | 18 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | WSW 5 | WNW 8 | WSW 5 | W 7 | WSW 7 | SW 6 | W 12 | W 10 | WNW 8 | — | W 8 | W 10 | — | — | W 9 | W 9 | W 10 | W 10 | W 9 | W 9 |
| kJ | 11 | 13 | 11 | 106 | 34 | 33 | 24 | 89 | 23 | — | 461 | 484 | — | — | 614 | 390 | 314 | 225 | 133 | 78 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | NNE 3 | WNW 8 | — | W 8 | W 8 | W 12 | NW 9 | WSW 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 16 | 1 | 12 | — | 33 | 48 | 41 | 21 | 13 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | WSW 6 | — | — | WNW 11 | WNW 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 6 | — | — | 11 | 49 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 3 | — | — | — | — | WSW 6 | WSW 7 | WSW 5 | WSW 5 | WSW 7 | WSW 8 | — | W 10 | W 8 | W 9 | — | — | — | — | NW 3 |
| kJ | 3 | — | — | — | — | 96 | 102 | 46 | 90 | 428 | 236 | — | 417 | 387 | 469 | — | — | — | — | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 136 | 33 | 237 | 22 | 9 | 226 | 355 | 237 | 317 | 355 | 22 | 68 | 68 | 352 | 68 | 68 | 9 | 22 | 9 | 22 |
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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