Surf Forecasts:
Les Dunes surf forecast from 13 Aug 2026:
- Best quality surf: Sunday 16 Aug, 5AM (local time) - 3.5ft (1.1m), 8s period, WNW swell with offshore winds.
- Most powerful swell: Friday 14 Aug, 5PM (local time) - 3.5ft (1.1m), 9s period, WNW swell with 193 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 2AM (local time) - 2.5ft (0.8m), 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 Friday (Aug 14) at 2AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.6m and 4s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 1.1m 9s and forecast to arrive on Friday (Aug 14) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Aug 17) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 14th Aug) | 2.5ft (0.8m) 10s |
| Best Surf | 5AM (Sun 16th Aug) | 3.5ft (1.1m) 8s |
| Most Powerful | 5PM (Fri 14th Aug) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's have a look at what's cookin' for Les Dunes over the next couple of weeks. I gotta be straight with you, it's a grim stretch. The combined wave energy barely cracks three digits on a couple of afternoons, and even then, the quality just isn't there.
We start off on Thursday the 13th with tiny, poor surf. A 2ft to 3ft W swell, but the wind is all wrong, cross-shore and bumpy. Energy is weak, 88 to 138. It’s just not worth paddling out.
Friday the 14th gives us a glimmer. The morning shows a 3ft WNW swell with a 10-second period, and the wind goes cross-offshore, cleaning it right up. It’s the first surfable moment, scoring a 1/10, but the energy is still low at 179. It’s small, but at least the faces will look tidy for a few hours. The afternoon, though, gets ruined by a 15 mph cross-shore wind that chops it up.
Saturday the 15th is a write-off. Same small 3ft swell, but the wind is cross and bumpy all day. Not clean.
Sunday the 16th morning offers another window. A light NNE offshore breeze, 6 mph, cleans up that 3ft, 8-second WNW swell. Energy is a low 93, but it will be glassy and surfable for a bit. But then the afternoon brings rain showers and a nasty 15 mph cross-wind.
From Monday the 17th right through to the end of the month, it's a desert. The swell drops to 1.0ft to 3ft, but the winds are consistently cross, onshore, or just too strong. The combined energy sinks to two-digit numbers most of the time—25, 37, 22. There’s no wave quality to speak of. We get a tiny 1.0ft clean morning on Tuesday the 18th and another on Sunday the 23rd, but that’s not surf, that’s a paddle.
The only window that’s even remotely interesting is the late-period on Friday 28th. We see a 2ft W swell with a 9-second period and a light SE cross-shore, giving clean conditions. But it’s still tiny and weak at 62. It's more of a longboard cruise than a proper session.
Honestly, for the entire 16 days, the standout is that Friday morning, August 14th. It’s the only time we get a clean, rideable wave with any push, even if it's small. If you have to get wet, that’s your shot. For the rest, keep your board in the car and your eyes on the forecast. A blank run like this is just part of the deal sometimes. But hang in there, it never stays flat forever.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat morning. Warm (max 30°C on Thu afternoon, min 18°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun afternoon. Warm (max 25°C on Sun afternoon, min 16°C on Tue morning). Winds increasing (light winds from the NNE on Sun morning, fresh winds from the WNW by Mon afternoon). | ||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | W 9 | W 9 | W 10 | W 10 | WNW 10 | WNW 9 | WNW 6 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | NW 7 | NW 4 | WNW 5 | WNW 8 | WNW 8 | WNW 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 61 | 87 | 122 | 125 | 154 | 193 | 70 | 99 | 116 | 85 | 93 | 88 | 18 | 37 | 22 | 47 | 14 | 11 | 15 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | cross | cross | off | off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross |
High Tide | 5:56AM4.28m | 6:11PM4.66m | 6:35AM4.32m | 6:50PM4.66m | 7:12AM4.27m | 7:26PM4.52m | 7:46AM4.13m | 8:00PM4.27m | 8:17AM3.93m | 8:32PM3.95m | 8:47AM3.69m | 9:03PM3.61m | |||||||
Low Tide | 11:27PM-0.14m | 11:42AM-0.07m | 00:11AM-0.26m | 12:25PM-0.16m | 00:53AM-0.25m | 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 | ||||||
 | | |  | | |  |  |  | | | |  | | | | | | | |
 | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — |
 | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:17 | — | — | 9:15 | — | — | 9:14 | — | — | 9:13 |
mm | — | — | — | — | — | — | 1 | 2 | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 30 | 28 | 26 | 29 | 24 | 21 | 26 | 24 | 24 | 25 | 22 | 21 | 23 | 21 | 20 | 22 | 20 |
Feels °C | 27 | 26 | 27 | 25 | 25 | 27 | 23 | 20 | 26 | 22 | 23 | 22 | 17 | 17 | 18 | 17 | 19 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 10 | W 10 | WNW 10 | W 9 | WNW 6 | WNW 8 | — | WNW 8 | WNW 8 | — | WNW 7 | NW 7 | — | WNW 5 | WNW 8 | WNW 8 | WNW 7 |
| kJ | 61 | 87 | 122 | 125 | 154 | 108 | 70 | 99 | — | 85 | 93 | — | 18 | 37 | — | 47 | 13 | 11 | 15 |
Swell 2 Height (m) Direction Period (s) | W 5 | — | W 12 | — | — | — | W 9 | — | — | — | — | — | — | — | — | W 10 | WNW 8 | — | — |
| kJ | 1 | — | 12 | — | — | — | 40 | — | — | — | — | — | — | — | — | 2 | 14 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 3 | WNW 4 | NW 3 | NW 4 | NW 5 | WNW 9 | — | N 3 | WNW 8 | N 3 | — | WNW 8 | NNW 4 | — | NW 4 | — | WNW 5 | WNW 4 | WNW 4 |
| kJ | 4 | 1 | 4 | 10 | 25 | 193 | — | 3 | 116 | 3 | — | 88 | 23 | — | 22 | — | 10 | 7 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 9 | 22 | 0 | 0 | 293 | 9 | 9 | 22 | 0 | 0 | 22 | 89 | 369 | 353 | 283 | 89 | 492 | 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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