Surf Forecasts:
Les Dunes surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 5PM (local time) - 4.5ft (1.4m), 13s period, W swell with cross-onshore winds.
- Most powerful swell: Monday 7 Sep, 5PM (local time) - 4.5ft (1.4m), 13s period, W swell with 673 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 2AM (local time) - 2.5ft (0.8m), 9s 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 Saturday (Sep 05) at 2AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.1m and 16s. 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 1.4m 13s and forecast to arrive on Monday (Sep 07) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Sep 06) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sat 5th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 5PM (Mon 7th Sep) | 4.5ft (1.4m) 13s |
| Most Powerful | 5PM (Mon 7th Sep) | 4.5ft (1.4m) 13s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s look at what’s cooking for the next couple weeks.
Honestly, it’s a bit of a quiet run overall, with not much to write home about. There’s a small window of interest early on, but then a long stretch of nothing special.
The best on offer is Saturday morning, September 5th at Les Dunes. We’ve got a clean 3 ft swell rolling in from the WNW, with a light offshore breeze from the ENE at 9 mph. That’s a glassy setup, and the combined wave energy is in the moderate range (204). It’s not huge, but for a beginner-friendly spot like this, the conditions are about as good as it gets. The water temp is about average for this time of year.
Saturday afternoon sees the wind switch to a light cross-shore from the NW at 6 mph, with a bigger 3 ft swell from the W and a long 13-second period. The energy jumps up to 339, but the cross-shore wind and questionable tide make it a marginal call.
Sunday morning (Sept 6) is clean with an ESE cross-offshore breeze at 9 mph, but the swell drops to 2 ft and the energy is weak (119). The wind is decent, but the surf is just too small to get excited about.
After that, things get grim. From Sunday afternoon all the way through to the end of the forecast on September 20th, it’s a long stretch of poor surf conditions. Swell stays small, often under 3 ft, and wind is mostly onshore or cross-onshore. There’s a spike on Monday afternoon (Sept 7) with 5 ft swell and strong energy (673), but with a cross-onshore wind at 9 mph and the spot being exposed, it’s considered too big for this break. Not a good look.
Beyond that, you’re looking at a lot of weak, choppy, or blown-out days. There’s a small clean window on Sunday morning, September 13th, with a 2 ft swell and light offshore wind, but the energy is low (102) and the waves are just ordinary. By the second week, it’s pretty much flat or junk.
If you’re a kitesurfer, the windy afternoons with cross-shore conditions might be more interesting, but for a paddle surfer, this is a long dry spell. Don’t hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Sun afternoon, min 17°C on Sat morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Thu morning. Warm (max 20°C on Mon night, min 14°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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 | WNW 9 | W 13 | WNW 12 | WNW 11 | W 10 | W 9 | WSW 15 | W 13 | W 12 | W 11 | W 10 | W 10 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | W 7 | W 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 99 | 115 | 339 | 189 | 119 | 70 | 108 | 288 | 673 | 469 | 329 | 244 | 226 | 177 | 169 | 133 | 79 | 54 | 24 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross | cross-off | cross-off | on | cross-on | cross-on | cross-on | cross | cross-off | cross-on | cross-off | cross-on | cross | cross-on | on | on | cross-on |
High Tide | 10:23PM3.26m | 11:13AM3.24m | 00:45AM3.11m | 1:32PM3.31m | 2:26AM3.31m | 2:51PM3.63m | 3:29AM3.62m | 3:47PM4.00m | 4:18AM3.93m | 4:33PM4.32m | 4:59AM4.17m | 5:13PM4.54m | |||||||
Low Tide | 5:09AM1.16m | 5:52PM1.13m | 6:29AM1.26m | 7:18PM1.08m | 7:51AM1.11m | 8:35PM0.80m | 8:59AM0.79m | 9:35PM0.44m | 9:53AM0.43m | 10:24PM0.11m | 10:40AM0.12m | 11:07PM-0.13m | |||||||
 | | |  |  | | | | | | |  |  | | | |  | | | |
 | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — |
 | 8:40 | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | 2 | 1 | — |
Temp °C | 21 | 19 | 24 | 27 | 25 | 29 | 21 | 20 | 21 | 20 | 17 | 16 | 17 | 18 | 18 | 18 | 18 | 18 | 19 |
Feels °C | 21 | 16 | 22 | 24 | 22 | 26 | 21 | 21 | 21 | 20 | 14 | 14 | 14 | 15 | 14 | 15 | 16 | 14 | 17 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | W 13 | WNW 12 | WNW 11 | W 10 | WSW 18 | WSW 15 | W 13 | W 12 | W 11 | W 10 | WNW 12 | WNW 11 | WNW 11 | W 8 | WNW 8 | W 12 | W 7 |
| kJ | 99 | 115 | 339 | 189 | 119 | 70 | 31 | 288 | 673 | 469 | 329 | 244 | 29 | 43 | 25 | 1 | 79 | 3 | 24 |
Swell 2 Height (m) Direction Period (s) | W 16 | W 13 | — | — | — | — | — | W 5 | — | — | — | — | W 10 | — | W 9 | — | W 13 | WNW 10 | W 8 |
| kJ | 5 | 89 | — | — | — | — | — | 23 | — | — | — | — | 71 | — | 13 | — | 3 | 36 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | WNW 9 | — | — | — | — | WNW 12 | — | — | — | — | W 12 | W 11 |
| kJ | — | — | — | — | — | — | — | 26 | — | — | — | — | 83 | — | — | — | — | 3 | 2 |
Wind waves Height (m) Direction Period (s) | — | NE 2 | — | ENE 3 | ESE 3 | — | W 9 | — | — | — | — | N 2 | W 10 | WNW 9 | WNW 9 | WNW 8 | — | W 7 | — |
| kJ | — | 1 | — | 3 | 2 | — | 108 | — | — | — | — | 1 | 226 | 177 | 169 | 133 | — | 54 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 9 | 3 | 3 | 237 | 173 | 22 | 68 | 9 | 9 | 22 | 22 | 9 | 68 | 9 | 22 | 273 | 173 |
Best forecast wave conditions in Vendee | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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