Surf Forecasts:
Les Dunes surf forecast from 1 Sep 2026:
- Best quality surf: Monday 7 Sep, 2PM (local time) - 3.5ft (1.1m), 14s period, W swell with cross-onshore winds.
- Most powerful swell: Monday 7 Sep, 5PM (local time) - 4ft (1.2m), 13s period, W swell with 495 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 2AM (local time) - 2.5ft (0.7m), 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 Wednesday (Sep 02) at 2AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.4m and 3s. 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 1.2m 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 Saturday (Sep 05) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 2nd Sep) | 2.5ft (0.7m) 9s |
| Best Surf | 2PM (Mon 7th Sep) | 3.5ft (1.1m) 14s |
| Most Powerful | 5PM (Mon 7th Sep) | 4ft (1.2m) 13s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break down the next couple of weeks for Les Dunes.
Honestly, it’s a quiet period overall. There’s a long gap with nothing really worth getting wet for. The first decent window doesn’t come until early next month.
For this beginner-friendly beach break, the swell is mostly short-period windswell with messy wind. The water temp is about normal for this time of year.
Friday, 4th September morning is the first time conditions clean up. We get a light offshore breeze with 0.7m of W swell at 8 seconds. It’s surfable but nothing special.
Saturday, 5th September morning brings a gentle offshore breeze with 0.7m WNW swell at 9 seconds. The afternoon gets even better: light cross-offshore wind with 0.8m WNW swell and a longer 11-second period. That extra period gives the waves some push. This is the best bet in the whole window – clean, small, but rideable on a longer board. You might find a few others out there.
After Saturday, the wind turns onshore again and conditions go poor. The only other standout is Tuesday, 15th September morning: 1.1m W swell at 9 seconds with a light cross-shore breeze, but it’s flagged as too big for this break. Same story for Wednesday, 16th September morning – 1.3m W swell at 12 seconds, clean offshore wind, but again too big for Les Dunes.
So, if you’re keen, Saturday the 5th is your day. The rest is mostly a blank or out of reach.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Fri afternoon, min 17°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat night, min 17°C on Sat morning). Wind will be generally light. | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 8 | WNW 8 | WNW 8 | WNW 8 | W 8 | W 8 | W 8 | WNW 8 | W 8 | WNW 9 | WNW 11 | WNW 12 | W 11 | W 10 | W 5 | W 15 | W 13 | W 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 78 | 34 | 22 | 19 | 60 | 57 | 63 | 64 | 96 | 69 | 84 | 150 | 145 | 83 | 48 | 42 | 343 | 495 | 393 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross | on | cross-on | cross-off | cross-off | cross | cross-off | off | cross-off | off | cross-off | cross-off | cross | cross-on | cross-on | cross |
High Tide | 8:07AM3.99m | 8:27PM3.93m | 8:47AM3.76m | 9:14PM3.61m | 9:40AM3.48m | 10:23PM3.26m | 11:13AM3.24m | 00:45AM3.11m | 1:32PM3.31m | 2:26AM3.31m | 2:51PM3.63m | 3:29AM3.62m | |||||||
Low Tide | 2:24AM0.29m | 2:44PM0.41m | 3:09AM0.57m | 3:34PM0.69m | 4:02AM0.89m | 4:35PM0.96m | 5:09AM1.16m | 5:52PM1.13m | 6:29AM1.26m | 7:18PM1.08m | 7:51AM1.11m | 8:35PM0.80m | |||||||
 | |  |  | | | | | | | | |  | | | | | | | |
 | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — |
 | 8:46 | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 18 | 19 | 20 | 20 | 21 | 23 | 21 | 19 | 26 | 27 | 23 | 25 | 26 | 20 | 21 | 19 |
Feels °C | 17 | 16 | 15 | 16 | 20 | 20 | 20 | 21 | 21 | 20 | 18 | 24 | 24 | 20 | 23 | 23 | 21 | 21 | 17 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | WNW 8 | WNW 8 | WNW 8 | W 8 | W 8 | W 8 | WNW 8 | W 8 | WNW 9 | WNW 11 | WNW 12 | W 11 | W 10 | WSW 18 | W 6 | W 13 | W 12 |
| kJ | 78 | 34 | 22 | 19 | 60 | 57 | 63 | 64 | 96 | 69 | 84 | 150 | 145 | 83 | 48 | 31 | 68 | 495 | 393 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 14 | WNW 12 | WNW 14 | — | — | — | NW 10 | W 15 | W 8 | — |
| kJ | — | — | — | — | — | — | — | — | — | 4 | 44 | 40 | — | — | — | 23 | 343 | 12 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 16 | — | — | — | — | W 18 | W 9 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 19 | — | — | — | — | 25 | 13 | — | — |
Wind waves Height (m) Direction Period (s) | NW 3 | NW 3 | WNW 3 | WNW 3 | — | — | — | — | — | NW 4 | NNE 2 | NNW 2 | ENE 3 | ESE 3 | SSW 2 | W 5 | — | W 6 | WNW 4 |
| kJ | 4 | 2 | 4 | 2 | — | — | — | — | — | 12 | 1 | 1 | 4 | 2 | 1 | 42 | — | 32 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 22 | 237 | 237 | 237 | 22 | 0 | 0 | 470 | 9 | 0 | 0 | 0 | 0 | 3 | 3 | 22 | 68 | 9 |
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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