Surf Forecasts:
Les Dunes surf forecast from 11 Aug 2026:
- Best quality surf: Thursday 13 Aug, 2AM (local time) - 2ft (0.6m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 5PM (local time) - 4.5ft (1.3m), 9s period, WNW swell with 255 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 2AM (local time) - 2ft (0.6m), 9s 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 13) at 2AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.1m and 5s. 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 1.3m 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 1.1m 4s period and expected on Saturday (Aug 15) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 13th Aug) | 2ft (0.6m) 9s |
| Best Surf | 2AM (Thu 13th Aug) | 2ft (0.6m) 9s |
| Most Powerful | 5PM (Fri 14th Aug) | 4.5ft (1.3m) 9s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s on the table for the next couple of weeks.
To be straight with you, the first week and a half is a bit of a write-off for any proper surfing. From Tuesday, August 11th all the way through to Friday, August 21st, the swell is tiny and the conditions are generally messy. We’re looking at knee-high slop at best, with a lot of onshore wind and cross-chop. There’s a bit of a gap there with no real recommendations, so you’re better off leaving the board in the shed until the end of the month.
The one and only standout window looks like Monday, August 24th. That afternoon, Les Dunes (France) is finally going to turn it on. The wind goes glassy, swinging light from the NNW, and we’re expecting a clean 3 ft swell from the west. The real kicker is the period – a very long 15 seconds – which means proper groundswell energy moving through. The combined energy is moderate at 577, so there’s some real push behind it. This is a classic beach break setup, so that long period might make it a bit straight, but with glassy conditions and a decent size, it’s your best shot. The water temperature is about average for this time of year.
The following days, Tuesday the 25th and Wednesday the 26th, are smaller and less consistent, but still clean. Tuesday morning has offshore wind and a 3 ft groundswell to 12 seconds, but the energy is a bit lower. If you miss the Monday afternoon window, those are your fallback options.
Overall, don’t get your hopes up for the next ten days. The real action is that Monday, August 24th afternoon session. Mark it on the calendar.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 23°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 29°C on Fri afternoon, min 17°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 | WSW 7 | NW 8 | W 10 | W 11 | W 10 | W 9 | W 9 | W 10 | W 10 | W 10 | WNW 9 | WNW 6 | W 8 | NW 4 | WNW 8 | NW 8 | NW 4 | WNW 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 15 | 9 | 17 | 7 | 38 | 49 | 60 | 87 | 122 | 125 | 89 | 255 | 64 | 34 | 42 | 22 | 57 | 39 | 6 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | on | cross-off | cross-on | cross-on | cross-off | cross | cross | off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 4:24AM3.90m | 4:43PM4.27m | 5:13AM4.13m | 5:29PM4.52m | 5:56AM4.28m | 6:11PM4.66m | 6:35AM4.32m | 6:50PM4.66m | 7:12AM4.27m | 7:26PM4.52m | 7:46AM4.13m | 8:00PM4.27m | |||||||
Low Tide | 9:45PM0.44m | 10:06AM0.44m | 10:39PM0.11m | 10:57AM0.14m | 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 | ||||||
 | | |  | | | | | | | | |  |  |  |  |  | | | |
 | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — |
 | 9:25 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:17 | — | — | 9:15 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — |
Temp °C | 28 | 26 | 28 | 26 | 26 | 29 | 27 | 28 | 29 | 28 | 26 | 29 | 25 | 19 | 23 | 22 | 22 | 24 | 22 |
Feels °C | 24 | 24 | 27 | 26 | 26 | 27 | 25 | 27 | 25 | 24 | 25 | 27 | 22 | 17 | 20 | 19 | 20 | 22 | 17 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | WSW 7 | NW 8 | WNW 8 | W 11 | W 10 | W 9 | W 9 | W 10 | W 10 | W 10 | W 9 | WNW 6 | W 8 | — | WNW 8 | NW 8 | — | WNW 8 |
| kJ | 10 | 9 | 17 | 6 | 38 | 49 | 60 | 87 | 122 | 125 | 89 | 108 | 64 | 34 | — | 22 | 57 | — | 6 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 8 | WSW 7 | WSW 6 | WNW 8 | W 6 | W 5 | — | W 12 | — | NW 5 | — | W 9 | — | — | W 8 | — | — | W 8 |
| kJ | 15 | 7 | 4 | 4 | 6 | 1 | 1 | — | 12 | — | 18 | — | 39 | — | — | 5 | — | — | 5 |
Swell 3 Height (m) Direction Period (s) | W 11 | WNW 5 | W 10 | W 10 | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 3 | 8 | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | — | — | WNW 2 | — | NW 2 | NW 3 | WNW 3 | NW 3 | NW 5 | — | WNW 9 | N 4 | NW 6 | NW 4 | NNW 4 | NE 3 | NW 4 | NW 5 |
| kJ | 16 | — | — | 1 | — | 1 | 2 | 1 | 5 | 20 | — | 255 | 15 | 31 | 42 | 35 | 2 | 39 | 32 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 197 | 255 | 388 | 197 | 151 | 226 | 0 | 9 | 22 | 0 | 0 | 388 | 9 | 51 | 223 | 21 | 3 | 22 | 366 |
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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