Surf Forecasts:
Les Dunes surf forecast from 27 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 2AM (local time) - 4.5ft (1.4m), 10s period, W swell with cross-onshore winds.
- Most powerful swell: Saturday 29 Aug, 8PM (local time) - 7.5ft (2.3m), 8s period, WSW swell with 740 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 2AM (local time) - 4.5ft (1.4m), 10s 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 Tuesday (Sep 01) at 2AM. The primary swell is predicted to be 1.4m and 10s period. 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 2.3m 8s and forecast to arrive on Saturday (Aug 29) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Sep 02) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 1st Sep) | 4.5ft (1.4m) 10s |
| Best Surf | 2AM (Tue 1st Sep) | 4.5ft (1.4m) 10s |
| Most Powerful | 8PM (Sat 29th Aug) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the cards for the next couple of weeks.
Honestly, it's a bit of a tough stretch ahead. The first week or so is looking pretty grim, with a lot of onshore and cross-onshore wind trashing the waves. The water temperature is sitting at 69°F and that's about average for the time of year, so at least you won't be freezing while you're sitting there waiting for something decent.
The only real standout in this whole forecast is a window that opens up around the 1st of September. On Tuesday morning, the wind goes glassy from the NNW, with a 4ft swell from the west at 10 seconds. The combined energy is moderate at 220. It's a beginner-friendly break, Les Dunes, and it's exposed to the swell, so that westerly groundswell should wrap in. The guidance says it's a good option, but the waves might be on the bigger side for a learner. Mind you, the rest of that day and the following days are pretty ordinary again.
There's another flicker of hope on the 9th of September, with a moderate offshore wind from the NE blowing clean. The swell jumps up to 5ft from the WSW, but with a short period of 5 seconds, it's going to be a bit weak and messy. Still, it's offshore and clean, so it might be worth a look if you're desperate. The combined energy is moderate at 144. The following day, the 10th, also has clean offshore winds in the morning, with a 4ft swell from the WNW at 9 seconds, giving a moderate energy of 365. But again, the guidance suggests it might be too big for this break.
After that, things pretty much dry up again. There's a lot of "poor surf conditions" and "too big for this break" messages. It's a real mixed bag, and honestly, for a solid week there's not much to get excited about.
So, to cut a long story short, your best bet is the morning of Tuesday the 1st of September. If you're keen, get out there early for some clean, glassy waves. The 9th and 10th of September offer some promise but come with a caveat on the swell size. The rest of the time, you might be better off checking the forecast again in a few days.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Thu night. Warm (max 22°C on Thu afternoon, min 17°C on Fri morning). Winds increasing (calm on Thu morning, fresh winds from the SW by Sat afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 20°C on Sun morning, min 16°C on Tue night). Winds decreasing (fresh winds from the SW on Sun night, calm by Tue morning). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | WNW 8 | W 8 | W 8 | W 8 | W 6 | WSW 6 | WSW 6 | WSW 8 | WSW 8 | W 9 | W 9 | W 8 | W 9 | W 9 | W 10 | W 10 | W 9 | W 9 | WNW 8 | W 8 | WNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 12 | 55 | 31 | 110 | 91 | 75 | 227 | 657 | 459 | 359 | 502 | 287 | 575 | 501 | 377 | 220 | 130 | 76 | 72 | 34 | 20 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | glassy | cross | cross-off | cross-off | cross | cross-off |
High Tide | 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 | 8:07AM3.99m | 8:27PM3.93m | ||||||||
Low Tide | 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 | 2:44PM0.41m | 3:09AM0.57m | |||||||
 |  |  | |  |  | |  | |  | | | | |  | | | | | | | |
 | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — |
 | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — |
mm | — | 2 | 3 | 3 | — | — | — | 1 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 21 | 18 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 20 | 19 | 18 | 19 | 18 | 18 | 20 | 19 |
Feels °C | 21 | 20 | 20 | 15 | 17 | 17 | 16 | 15 | 18 | 18 | 18 | 18 | 16 | 17 | 18 | 19 | 18 | 15 | 17 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | W 8 | WSW 6 | W 9 | W 12 | WSW 6 | WNW 8 | — | WSW 8 | W 9 | W 9 | — | W 9 | W 9 | W 10 | W 10 | W 9 | W 9 | WNW 8 | W 8 | WNW 8 |
| kJ | 12 | 55 | 23 | 45 | 41 | 75 | 39 | — | 459 | 359 | 502 | — | 575 | 501 | 377 | 220 | 130 | 76 | 72 | 34 | 20 |
Swell 2 Height (m) Direction Period (s) | WSW 6 | W 12 | W 8 | WSW 8 | — | W 9 | — | — | — | — | — | — | — | — | — | — | — | WNW 4 | — | — | — |
| kJ | 3 | 3 | 31 | 6 | — | 61 | — | — | — | — | — | — | — | — | — | — | — | 13 | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 3 | — | W 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | W 8 | W 6 | — | WSW 6 | WSW 8 | — | — | W 9 | W 8 | — | — | — | — | NW 3 | NW 4 | — | NW 2 | NW 3 |
| kJ | — | — | — | 110 | 91 | — | 227 | 657 | — | — | 383 | 287 | — | — | — | — | 2 | 21 | — | 2 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 237 | 226 | 9 | 226 | 355 | 128 | 310 | 355 | 68 | 67 | 68 | 322 | 68 | 68 | 9 | 3 | 22 | 22 | 0 | 22 | 226 |
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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