Surf Forecasts:
Les Dunes surf forecast from 21 Aug 2026:
- Best quality surf: Saturday 22 Aug, 5AM (local time) - 2.5ft (0.8m), 9s period, WNW swell with offshore winds.
- Most powerful swell: Friday 28 Aug, 11PM (local time) - 8ft (2.5m), 9s period, WSW swell with 1,143 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 5AM (local time) - 2.5ft (0.8m), 9s period with WNW 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 22) at 5AM. The primary swell is predicted to be 0.8m and 9s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 2.5m 9s and forecast to arrive on Friday (Aug 28) 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 0.9m 4s period and expected on Sunday (Aug 23) at 8AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sat 22nd Aug) | 2.5ft (0.8m) 9s |
| Best Surf | 5AM (Sat 22nd Aug) | 2.5ft (0.8m) 9s |
| Most Powerful | 11PM (Fri 28th Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer. To be blunt, it’s a pretty quiet stretch ahead for Les Dunes. The forecast shows a whole lot of nothing much for the first week and a bit, with only a couple of fleeting windows that might just about be worth a paddle. The real action, if you can call it that, is hiding way out in the second week.
Alright, for Saturday the 22nd, there’s a tiny window first thing. We’ve got a clean little 3ft swell from the WNW, with a light Easterly breeze keeping it cross-offshore. Energy is weak though, sitting at only 90 (combined swell energy). It’s surfable, but ordinary is the word. The water temp is about average for the time of year at 70°F.
Then we hit a big dry spell. From Saturday afternoon right through until Wednesday the 26th, there’s nothing doing. The 26th offers a similar story to the Saturday before – a clean 3ft WSW swell, light ESE winds, but still just that weak energy of 67. It’s a desperate pick.
Now, things get a bit more interesting, but it’s for experts only. On Thursday the 3rd of September, there’s a big pulse of swell predicted. We’re looking at an 8ft WSW groundswell (period 8 seconds) on the morning, building to 10ft later. The combined swell energy is strong, hitting 953 and then 1135. But a word of warning: the report straight up says it’s too big for this break. The wind looks light though, with a slight cross-offshore breeze on the Thursday afternoon. This is definitely not for beginners, only experienced surfers who know the spot well. Friday the 4th of September still has some size, with a 5ft swell and light offshore winds in the morning, but again, the report flags it as too big for the break.
So, the standout here? Honestly, there isn’t a truly classic day. For the patient and the early riser, Saturday the 22nd morning is your best early bet for a clean if small wave. For the big-wave crew, Thursday the 3rd and Friday the 4th of September are the only times the ocean has any real punch, but you have to be an expert and know the risks.
Signing off, Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon afternoon. Warm (max 30°C on Sun night, min 15°C on Sat morning). Winds increasing (calm on Sat afternoon, fresh winds from the ENE by Sun night). | Days 5-7 Weather SummaryHeavy rain (total 25mm), heaviest during Wed night. Warm (max 23°C on Mon night, min 17°C on Wed night). Winds increasing (calm on Wed night, fresh winds from the W by Thu afternoon). | ||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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 | WNW 8 | W 9 | WSW 13 | WSW 11 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | SW 3 | WSW 8 | WSW 7 | WSW 7 | W 6 | W 8 | WSW 8 | W 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 132 | 90 | 34 | 24 | 6 | 31 | 64 | 38 | 32 | 30 | 13 | 5 | 270 | 125 | 53 | 30 | 177 | 385 | 276 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on | on | cross-on | cross | cross-on | glassy | on | cross-on | on |
High Tide | 00:57AM2.80m | 1:45PM2.94m | 2:34AM2.91m | 2:58PM3.13m | 3:30AM3.12m | 3:46PM3.39m | 4:09AM3.37m | 4:22PM3.67m | 4:41AM3.60m | 4:53PM3.92m | 5:10AM3.82m | 5:21PM4.14m | |||||||
Low Tide | 6:29AM1.61m | 7:17PM1.56m | 7:49AM1.56m | 8:32PM1.40m | 8:55AM1.33m | 9:29PM1.12m | 9:45AM1.04m | 10:13PM0.81m | 10:25AM0.73m | 10:51PM0.52m | 11:02AM0.46m | 11:26PM0.27m | |||||||
 |  |  |  | | | |  |  | | | | | | |  | | |  | |
 | — | 7:13 | — | — | 7:13 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — |
 | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:01 | — | — | 9:00 | — | 8:58 | — | — | 8:57 | — |
mm | — | — | — | — | — | — | — | 3 | 4 | — | 1 | — | — | — | 1 | 12 | 5 | 6 | 5 |
Temp °C | 19 | 18 | 22 | 24 | 21 | 29 | 30 | 21 | 25 | 23 | 22 | 22 | 21 | 21 | 22 | 21 | 19 | 19 | 19 |
Feels °C | 16 | 16 | 19 | 19 | 14 | 23 | 24 | 17 | 23 | 24 | 22 | 20 | 19 | 21 | 21 | 20 | 16 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 8 | W 9 | WNW 8 | W 9 | WSW 13 | WSW 11 | WSW 10 | WSW 9 | SSW 4 | WSW 8 | W 11 | WSW 8 | WSW 7 | WSW 7 | WNW 8 | — | — | W 7 |
| kJ | 132 | 90 | 14 | 24 | 6 | 31 | 64 | 38 | 32 | 6 | 13 | 2 | 270 | 125 | 53 | 14 | — | — | 276 |
Swell 2 Height (m) Direction Period (s) | — | — | W 10 | NW 4 | WNW 7 | N 4 | W 7 | — | W 9 | WSW 9 | WSW 4 | W 8 | S 5 | WNW 10 | WNW 9 | — | — | — | — |
| kJ | — | — | 8 | 4 | 5 | 1 | 1 | — | 2 | 30 | 1 | 1 | 2 | 9 | 16 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | W 8 | NW 7 | W 16 | NW 7 | NW 7 | — | — | — | W 12 | W 8 | — | — | — | — | — | — | — |
| kJ | — | — | 5 | 13 | 5 | 2 | 2 | — | — | — | 3 | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 8 | ENE 3 | ENE 4 | E 3 | E 4 | ESE 4 | SSE 5 | SW 4 | S 4 | SW 3 | — | — | — | W 6 | W 8 | WSW 8 | — |
| kJ | — | — | 34 | 3 | 21 | 3 | 13 | 7 | 23 | 7 | 1 | 5 | — | — | — | 30 | 177 | 385 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 9 | 0 | 9 | 151 | 231 | 144 | 129 | 469 | 255 | 151 | 144 | 256 | 19 | 3 | 256 | 3 | 226 | 436 | 232 |
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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