Surf Forecasts:
Les Dunes surf forecast from 15 Aug 2026:
- Best quality surf: Sunday 16 Aug, 2AM (local time) - 2.5ft (0.8m), 8s period, WNW swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 8PM (local time) - 4ft (1.2m), 10s period, WNW swell with 246 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 2AM (local time) - 2.5ft (0.8m), 8s 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 Sunday (Aug 16) at 2AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.3m and 8s. 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 1.2m 10s and forecast to arrive on Thursday (Aug 20) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Thursday (Aug 20) at 11AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 16th Aug) | 2.5ft (0.8m) 8s |
| Best Surf | 2AM (Sun 16th Aug) | 2.5ft (0.8m) 8s |
| Most Powerful | 8PM (Thu 20th Aug) | 4ft (1.2m) 10s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, let’s talk Les Dunes. This is a beginner-friendly beach break, fairly consistent, and exposed to the west-southwest. The whole 16-day window is mostly small and messy, with a long stretch of nothing, then a couple of interesting late dates.
The first real chance to get in the water is Saturday morning, August 15th. We’ve got a small 3ft swell from the west-northwest, period around 8 seconds, so nothing special. The wind is a light cross-off from the north-northwest, so it’s clean. Surfable but very ordinary.
The rest of the weekend and into the next week is a washout. Sunday the 16th morning has a bit of offshore wind, but the swell is still tiny. From Monday the 17th to about Friday the 22nd, it’s all poor conditions—small, choppy, messy. A dead run.
Now, if you’re patient, Wednesday morning, August 26th, brings a real swell. 4ft from the west, period 12 seconds, with moderate energy. The wind is a light cross-on from the south, so it’s not perfect, but it’s clean. The catch is the forecast says it might be too big for this break. 4ft is pushing it for beginners, but it’s workable for intermediates. This is the best on offer.
Then Sunday morning, August 30th, we’ve got a bigger swell: 6ft from the west-southwest, period 10 seconds, strong energy. The wind is offshore from the northeast, light breeze, so it’ll be glassy. This is a proper swell, but 6ft at a beach break that’s beginner-friendly is expert-only territory. It’s a standout for the size and clean wind, but not for the faint-hearted.
In summary: the first week is a bust. The 26th is your best bet for a decent session, and the 30th is a big day for experts only. Everything else is flat or ordinary.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat morning. Warm (max 26°C on Sun afternoon, min 17°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Tue afternoon, min 15°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 5 | WNW 7 | WNW 4 | NW 5 | WNW 8 | W 9 | W 8 | NW 5 | WNW 7 | NW 5 | W 10 | WNW 10 | WNW 6 | W 10 | WNW 4 | WNW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 143 | 78 | 73 | 81 | 86 | 20 | 40 | 18 | 23 | 12 | 6 | 11 | 23 | 43 | 36 | 48 | 196 | 44 | 67 | 47 | 44 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | off | cross-off | cross | cross-off | cross-off | cross | off | cross-off | cross | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 7:26PM4.52m | 7:46AM4.13m | 8:00PM4.27m | 8:17AM3.93m | 8:32PM3.95m | 8:47AM3.69m | 9:03PM3.61m | 9:19AM3.43m | 9:39PM3.27m | 10:00AM3.17m | 10:32PM2.96m | 11:17AM2.94m | 00:57AM2.80m | ||||||||
Low Tide | 1:07PM-0.13m | 1:33AM-0.11m | 1:48PM0.03m | 2:13AM0.14m | 2:29PM0.29m | 2:53AM0.46m | 3:11PM0.62m | 3:34AM0.82m | 3:57PM0.97m | 4:20AM1.17m | 4:50PM1.29m | 5:17AM1.46m | 5:57PM1.52m | ||||||||
 |  |  |  | | | | | | | | | | |  | | | |  | |  | |
 | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — |
 | — | — | 9:17 | — | — | 9:15 | — | — | 9:14 | — | — | 9:13 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 25 | 23 | 24 | 26 | 23 | 21 | 25 | 21 | 22 | 24 | 22 | 20 | 22 | 20 | 18 | 19 | 19 | 18 | 19 | 19 |
Feels °C | 20 | 24 | 21 | 24 | 24 | 20 | 19 | 20 | 18 | 21 | 20 | 19 | 18 | 20 | 18 | 16 | 15 | 16 | 17 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | — | WNW 8 | WNW 8 | — | WNW 5 | WNW 7 | — | NW 5 | WNW 5 | WNW 7 | W 8 | WNW 5 | — | NW 5 | W 9 | W 10 | WNW 6 | W 10 | W 9 | W 9 |
| kJ | 143 | — | 73 | 81 | — | 20 | 40 | — | 23 | 10 | 5 | 11 | 15 | — | 36 | 45 | 30 | 39 | 67 | 24 | 24 |
Swell 2 Height (m) Direction Period (s) | — | — | W 8 | — | — | WNW 7 | — | — | W 9 | WNW 8 | W 9 | W 6 | W 8 | W 14 | WNW 10 | W 10 | — | WNW 11 | WNW 6 | — | WNW 9 |
| kJ | — | — | 11 | — | — | 11 | — | — | 7 | 12 | 6 | 1 | 5 | 4 | 31 | 48 | — | 44 | 23 | — | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 8 | — | — | — | — | — | W 8 | — | — | W 9 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 1 | — | — | 27 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WNW 8 | — | — | WNW 7 | — | NNE 3 | WNW 4 | NE 3 | — | NW 3 | NW 4 | NW 5 | WNW 7 | — | NW 6 | WNW 10 | NNE 3 | NNE 3 | WNW 4 | WNW 5 |
| kJ | — | 78 | — | — | 86 | — | 1 | 18 | 2 | — | 4 | 9 | 23 | 43 | — | 24 | 196 | 4 | 3 | 47 | 44 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 22 | 0 | 0 | 355 | 253 | 71 | 355 | 261 | 226 | 749 | 474 | 173 | 388 | 9 | 9 | 293 | 159 | 3 | 353 |
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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