Surf Forecasts:
Les Dunes surf forecast from 7 Sep 2026:
- Best quality surf: Monday 7 Sep, 8PM (local time) - 4.5ft (1.4m), 13s period, W swell with cross-onshore winds.
- Most powerful swell: Wednesday 9 Sep, 2AM (local time) - 7ft (2.2m), 9s period, WNW swell with 784 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 8PM (local time) - 4.5ft (1.4m), 13s 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 Monday (Sep 07) at 8PM. The primary swell is predicted to be 1.4m and 13s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 2.2m 9s and forecast to arrive on Wednesday (Sep 09) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Monday (Sep 14) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 7th Sep) | 4.5ft (1.4m) 13s |
| Best Surf | 8PM (Mon 7th Sep) | 4.5ft (1.4m) 13s |
| Most Powerful | 2AM (Wed 9th Sep) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's check out what Les Dunes has cooking over the next couple of weeks. It’s a story of patience, but there are a couple of windows worth setting the alarm for.
The water temp is sitting around 69.6°, which is a touch warmer than usual for the season – a nice little bonus.
We’ve got a flat and messy start. Monday the 7th and Tuesday the 8th are total write-offs with strong onshore winds and poor, lumpy conditions. There's some wave energy (782), but it’s wasted with 22 mph winds. On Wednesday the 9th, the morning looks clean with a 4.2ft swell, period of 9 seconds, but the inside word says it’s simply too big for this break. After that, it’s back to tiny, poor waves right through the middle of the month.
The first real standout is Sunday the 13th. The morning session is the one to chase. We’ve got 3ft of long-period groundswell from the WNW with a period of 15 seconds, solid energy at 485. And the wind? Dead calm, glassy. This long-period stuff will offer better shape and more push, but at a beach break like Les Dunes, those long lulls between sets might make it feel a bit inconsistent. Still, for a sunrise session, that’s about as good as it gets.
The second standout is a long-range call, so keep a loose eye on it. Sunday the 20th shows a powerful 5.6ft swell from the WNW with a 13-second period – that’s strong, energetic groundswell (1405). But again, the forecast flags it as potentially too big for this spot, putting it in the expert-only zone. The wind will be a moderate cross-shore, so not the silky smooth conditions of the week before. It’s got serious potential, but it’s a big wave day for Les Dunes.
After that, there’s a clean-looking morning on the 21st with a 3.9ft swell and offshore winds, but energy levels are moderate and it’s another one that might be pushing the size limits for the spot. The rest of the run falls off into tiny, clean but weak waves.
Short story: if you can wait, the 13th is your morning. For the brave and experienced, the 20th could be a bomb, but it’s a long way off.
Stay safe out there.
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 21°C on Mon morning, min 15°C on Tue night). Winds increasing (light winds from the WSW on Mon morning, fresh winds from the WSW by Tue afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sat afternoon, min 15°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | WSW 15 | W 13 | W 12 | W 11 | W 7 | WNW 9 | W 9 | W 9 | WNW 9 | WNW 9 | W 8 | W 8 | W 10 | W 10 | W 8 | W 7 | W 7 | W 10 | WNW 15 | WNW 14 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 360 | 683 | 472 | 535 | 364 | 784 | 269 | 230 | 90 | 46 | 30 | 20 | 19 | 120 | 84 | 54 | 37 | 98 | 370 | 336 | 62 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross | cross-off | cross-off | cross | cross-off | cross | cross-on | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | glassy | cross | cross-off |
High Tide | 2:51PM3.63m | 3:29AM3.62m | 3:47PM4.00m | 4:18AM3.93m | 4:33PM4.32m | 4:59AM4.17m | 5:13PM4.54m | 5:36AM4.32m | 5:49PM4.63m | 6:09AM4.37m | 6:22PM4.58m | 6:39AM4.33m | 6:52PM4.43m | ||||||||
Low Tide | 8:35PM0.80m | 8:59AM0.79m | 9:35PM0.44m | 9:53AM0.43m | 10:24PM0.11m | 10:40AM0.12m | 11:07PM-0.13m | 11:22AM-0.09m | 11:47PM-0.24m | 12:02PM-0.18m | 00:25AM-0.21m | 12:40PM-0.13m | 1:02AM-0.06m | ||||||||
 |  |  | |  | |  | |  | | | | | | | | | | | | | |
 | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — | 7:39 | — | — | 7:41 | — | — |
 | — | 8:36 | — | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 20 | 20 | 19 | 17 | 18 | 18 | 17 | 19 | 18 | 17 | 19 | 18 | 20 | 22 | 21 | 21 | 23 | 22 |
Feels °C | 22 | 21 | 20 | 15 | 16 | 13 | 14 | 14 | 15 | 16 | 16 | 16 | 17 | 17 | 15 | 19 | 19 | 17 | 21 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | W 13 | W 12 | W 11 | — | WNW 9 | W 9 | W 9 | WNW 9 | WNW 9 | W 8 | W 8 | W 7 | W 10 | W 8 | W 7 | W 7 | W 10 | WNW 15 | WNW 14 | WNW 9 |
| kJ | 360 | 683 | 472 | 329 | — | 528 | 269 | 230 | 90 | 46 | 28 | 20 | 17 | 120 | 84 | 54 | 37 | 98 | 370 | 336 | 62 |
Swell 2 Height (m) Direction Period (s) | W 5 | — | — | — | — | — | WNW 11 | W 9 | W 8 | W 8 | WNW 9 | WNW 8 | W 10 | — | — | — | W 16 | W 14 | W 15 | — | WNW 13 |
| kJ | 24 | — | — | — | — | — | 12 | 122 | 46 | 33 | 30 | 12 | 19 | — | — | — | 20 | 61 | 115 | — | 54 |
Swell 3 Height (m) Direction Period (s) | WNW 9 | — | — | — | — | — | — | — | — | W 13 | W 12 | W 11 | NW 8 | — | — | W 18 | W 12 | W 7 | — | — | — |
| kJ | 26 | — | — | — | — | — | — | — | — | 3 | 3 | 9 | 3 | — | — | 6 | 3 | 15 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | W 9 | — | W 11 | W 7 | WNW 9 | — | NW 3 | — | — | — | — | — | — | — | — | — | NW 3 | — | NW 2 | NNW 3 |
| kJ | — | 99 | — | 535 | 364 | 784 | — | 3 | — | — | — | — | — | — | — | — | — | 2 | — | 1 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 237 | 22 | 345 | 353 | 9 | 9 | 22 | 0 | 3 | 226 | 3 | 19 | 22 | 0 | 0 | 22 | 0 | 0 | 226 | 0 |
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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