Surf Forecasts:
Les Dunes surf forecast from 25 Aug 2026:
- Best quality surf: Monday 31 Aug, 11PM (local time) - 4ft (1.2m), 9s period, W swell with cross-shore winds.
- Most powerful swell: Friday 28 Aug, 11PM (local time) - 7ft (2.1m), 8s period, W swell with 632 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 8PM (local time) - 3.5ft (1.0m), 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 Thursday (Aug 27) at 8PM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.1m and 11s. 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 2.1m 8s 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 0.4m 3s period and expected on Wednesday (Aug 26) at 5PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 27th Aug) | 3.5ft (1.0m) 8s |
| Best Surf | 11PM (Mon 31st Aug) | 4ft (1.2m) 9s |
| Most Powerful | 11PM (Fri 28th Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, mate. Rusty here, and I’ve got the goods on what’s coming up for your local patch. Let’s get into it.
First off, the water temp is sitting right around 69°, which is pretty average for this time of year, so you won’t need the thickest rubber.
Honestly, the next week and a half is a bit of a struggle. The surf is either tiny, onshore blown out, or just too messy to get excited about. We’ve got a long gap of poor conditions from now through the end of August and into early September.
The first real standout isn’t until the morning of September 3rd at Les Dunes. That’s your best bet for a proper session. The swell is running 4ft from the West, with a period around 9 seconds. The wind is glassy – dead calm, light air – so it’ll be as clean as it gets. The downer? The guidance warns it might actually be a bit too big for this break, so it’s one for the more experienced surfers who know the place. The waiting game will pay off.
Before that, the morning of September 2nd has some promise. You’ve got 4ft swell from the West with a longer 11-second period, and light offshore wind from the WSW. Again, the model hints the swell size might be pushing the limits for Les Dunes, but if you’re a competent surfer, those clean, longer-period lines could offer a good session before the crowd catches on.
The following week gets messy again with strong winds and choppy conditions until the morning of September 8th. That morning, the wind swings offshore from the ENE, cleaning up a 3ft swell from the WNW. It’s not going to blow your mind, but it’ll be surfable and clean – a decent consolation if you’re chasing anything at all.
For the rest of the period, it’s more of the same: onshore winds, choppy faces, and poor surf quality. Hold out for that glassy morning on the 3rd if you can.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Thu night. Warm (max 27°C on Wed afternoon, min 19°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Fri morning. Warm (max 21°C on Sun afternoon, min 18°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | WSW 8 | W 11 | WNW 10 | WSW 6 | WSW 6 | W 6 | WSW 5 | W 8 | W 8 | WSW 5 | WSW 7 | W 8 | WSW 8 | W 8 | W 8 | W 8 | WSW 7 | W 6 | W 8 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 13 | 10 | 20 | 30 | 23 | 25 | 21 | 118 | 121 | 78 | 440 | 512 | 316 | 292 | 247 | 313 | 158 | 182 | 346 | 286 | 215 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-off | cross-off | on | on | cross | glassy | cross-on | on | cross-on | on | on | on | cross-on | on | cross-on | cross | cross | cross-on |
High Tide | 4:22PM3.67m | 4:41AM3.60m | 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 | ||||||||
Low Tide | 9:45AM1.04m | 10:13PM0.81m | 10:25AM0.73m | 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 | |||||||
 |  |  | |  | |  | |  | | | | |  | |  | |  | | |  | |
 | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — |
 | — | — | 9:00 | — | 8:58 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — |
mm | — | — | — | — | 2 | — | 2 | 2 | 3 | 2 | 1 | 1 | — | — | — | 1 | 2 | 2 | — | — | — |
Temp °C | 20 | 21 | 21 | 20 | 27 | 25 | 20 | 20 | 21 | 19 | 20 | 19 | 20 | 20 | 20 | 20 | 21 | 20 | 18 | 18 | 18 |
Feels °C | 20 | 20 | 20 | 21 | 26 | 26 | 20 | 18 | 21 | 15 | 16 | 17 | 18 | 18 | 18 | 20 | 18 | 18 | 14 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | WSW 8 | WNW 10 | WSW 6 | WSW 6 | WSW 4 | WSW 5 | W 8 | W 8 | W 13 | — | — | — | — | W 8 | W 8 | WNW 10 | — | W 8 | W 9 | W 9 |
| kJ | 13 | 6 | 20 | 30 | 23 | 14 | 21 | 118 | 121 | 3 | — | — | — | — | 247 | 313 | 96 | — | 346 | 286 | 215 |
Swell 2 Height (m) Direction Period (s) | W 12 | W 11 | W 7 | WNW 10 | WNW 9 | WNW 8 | W 8 | W 12 | WNW 10 | W 9 | — | — | — | — | — | — | — | — | — | W 13 | — |
| kJ | 3 | 10 | 1 | 18 | 16 | 13 | 10 | 3 | 11 | 2 | — | — | — | — | — | — | — | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | W 9 | W 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 3 | WSW 4 | — | SE 3 | W 6 | — | — | — | WSW 5 | WSW 7 | W 8 | WSW 8 | W 8 | — | — | WSW 7 | W 6 | W 8 | — | — |
| kJ | 4 | 2 | 12 | — | 2 | 25 | — | — | — | 78 | 440 | 512 | 316 | 292 | — | — | 158 | 182 | 256 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 237 | 237 | 237 | 11 | 136 | 264 | 237 | 3 | 0 | 353 | 353 | 68 | 128 | 283 | 172 | 125 | 343 | 353 | 369 | 22 | 9 |
Best forecast wave conditions in Vendee | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Les Dunes surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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