Surf Forecasts:
Les Dunes surf forecast from 8 Aug 2026:
- Best quality surf: Friday 14 Aug, 5AM (local time) - 3.5ft (1.0m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 5AM (local time) - 3.5ft (1.0m), 10s period, W swell with 200 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. Another secondary swell of 0.4m and 3s is also forecast. 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 1.0m 10s and forecast to arrive on Friday (Aug 14) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Aug 13) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 13th Aug) | 2ft (0.6m) 9s |
| Best Surf | 5AM (Fri 14th Aug) | 3.5ft (1.0m) 10s |
| Most Powerful | 5AM (Fri 14th Aug) | 3.5ft (1.0m) 10s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break it down.
This stretch at Les Dunes is a tough one. There’s a long gap from now all the way through to the morning of August 14th where the swell is just too small or the conditions are too messy to get excited about. The energy is weak, barely cracking double digits, and the wind is all over the place. There’s a bit of a pulse on the morning of the 14th, with a combined energy of 106 (moderate) and offshore flow from the NNW, but the swell is only 2ft from the W, and the forecaster is calling it “surfable but very ordinary.” That’s not a stand-out, it’s just a chance to get wet.
The real story is the morning of Wednesday, August 19th. The swell jumps to 4ft from the WNW with a period of 8 seconds, and the combined energy hits 212 (strong). The wind is cross from the NW at 9 mph, which is gentle, giving us a slight cross-chop but not trashing it. The catch is that the guidance says the swell may be too big for this break, so it’s one for the experienced crew only. If you’re a beginner, that’s a day to watch from the sand. The forecast notes say wind and tide are favorable, so for the right surfer, this is the standout wave of the whole outlook. The water is running at 69°, which is about normal for the time of year.
After that, it drops back down. The morning of August 20th has a clean 2ft with offshore NE wind at 12 mph, giving moderate offshore and clean conditions, but the energy is low at 62 (weak). The morning of August 23rd also offers a clean 2ft with offshore NE wind, but again, weak energy at 95.
So, bottom line: if you’re an experienced surfer, circle August 19th on the calendar. For everyone else, the first half of the month is a no-go, and the second half is only worth a peek if you’re desperate for a bump.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun morning. Warm (max 28°C on Sat afternoon, min 20°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Thu afternoon, min 21°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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) | W 9 | W 9 | WNW 10 | WNW 10 | WNW 9 | WSW 7 | WSW 7 | WSW 7 | WNW 9 | WSW 7 | WNW 8 | WNW 10 | W 11 | W 10 | W 9 | W 9 | W 9 | W 10 | W 9 | W 9 | WNW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 7 | 2 | 10 | 18 | 17 | 10 | 16 | 17 | 15 | 9 | 13 | 18 | 37 | 49 | 58 | 79 | 83 | 96 | 85 | 81 | 74 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | glassy | glassy | cross | cross-off | off | cross-on | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off | cross | cross | cross | cross-off | cross | cross-off |
High Tide | 1:18PM3.35m | 2:12AM3.37m | 2:46PM3.59m | 3:27AM3.62m | 3:51PM3.93m | 4:24AM3.90m | 4:43PM4.27m | 5:13AM4.13m | 5:29PM4.52m | 5:56AM4.28m | 6:11PM4.66m | 6:35AM4.32m | 6:50PM4.66m | ||||||||
Low Tide | 7:25PM1.00m | 8:00AM1.00m | 8:40PM0.77m | 9:08AM0.75m | 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 | ||||||||
 |  |  |  | |  | | | | | | | | | | | | | | | | |
 | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — |
 | — | — | 9:29 | — | — | 9:27 | — | — | 9:25 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 |
mm | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 28 | 25 | 22 | 24 | 23 | 25 | 26 | 25 | 23 | 26 | 24 | 28 | 29 | 26 | 28 | 30 | 25 | 25 | 27 | 26 |
Feels °C | 21 | 23 | 21 | 23 | 22 | 20 | 22 | 24 | 23 | 23 | 25 | 23 | 27 | 27 | 24 | 27 | 27 | 21 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | NW 3 | NW 3 | WNW 9 | WSW 7 | NW 5 | WSW 7 | WNW 4 | WNW 5 | WNW 8 | WNW 10 | W 11 | W 10 | W 9 | W 9 | W 9 | W 10 | W 9 | W 9 | WNW 6 |
| kJ | 7 | 2 | 1 | 2 | 17 | 10 | 8 | 17 | 13 | 5 | 13 | 18 | 37 | 49 | 58 | 79 | 83 | 96 | 85 | 81 | 74 |
Swell 2 Height (m) Direction Period (s) | NW 6 | NW 6 | WNW 10 | WNW 10 | W 6 | WNW 9 | WSW 7 | WNW 9 | WSW 7 | WSW 7 | WSW 7 | WSW 6 | WNW 8 | — | W 5 | WNW 4 | W 12 | WNW 4 | WNW 6 | — | W 9 |
| kJ | 1 | 1 | 10 | 18 | 3 | 8 | 16 | 16 | 10 | 9 | 4 | 4 | 6 | — | 1 | 1 | 3 | 12 | 21 | — | 57 |
Swell 3 Height (m) Direction Period (s) | — | W 6 | W 7 | W 6 | — | — | WNW 9 | — | WNW 9 | WNW 8 | W 10 | — | WSW 6 | — | — | W 13 | — | — | — | — | — |
| kJ | — | 1 | 1 | 3 | — | — | 8 | — | 15 | 7 | 8 | — | 3 | — | — | 3 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | — | — | NW 3 | NW 4 | — | NW 4 | — | — | — | — | — | W 2 | NW 3 | — | WNW 3 | — | N 3 | NW 5 | — |
| kJ | 1 | — | — | — | 2 | 5 | — | 6 | — | — | — | — | — | 1 | 4 | — | 3 | — | 1 | 13 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 274 | 237 | 180 | 180 | 473 | 223 | 89 | 159 | 151 | 151 | 355 | 226 | 11 | 226 | 0 | 9 | 22 | 9 | 0 | 223 | 9 |
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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