Surf Forecasts:
Les Dunes surf forecast from 9 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 5AM (local time) - 5ft (1.6m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 5AM (local time) - 5ft (1.6m), 9s period, W swell with 421 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 5AM (local time) - 5ft (1.6m), 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 Wednesday (Sep 09) at 5AM. The primary swell is predicted to be 1.6m and 9s period. 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 1.6m 9s and forecast to arrive on Wednesday (Sep 09) 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 0.5m 3s period and expected on Monday (Sep 14) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 9th Sep) | 5ft (1.6m) 9s |
| Best Surf | 5AM (Wed 9th Sep) | 5ft (1.6m) 9s |
| Most Powerful | 5AM (Wed 9th Sep) | 5ft (1.6m) 9s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s look at this one in feet and miles.
The outlook for Les Dunes is pretty flat for a long stretch. The first real chance on Wednesday the 9th has 4ft swell from the west, but that’s actually too big for this beginner spot, so it’s not a goer. The combined energy is moderate (281), and the wind is a clean cross-off from the NNW, but the size ruins it.
Thursday the 10th and Friday the 11th are all small, weak, and onshore, with combined energy dropping to as low as 52 – that’s weak. Saturday morning the 12th is the first window worth a mention: glassy conditions, clean, with a 2ft west swell (70 energy). It’s small and ordinary, but the glassy wind is a nice touch.
Sunday the 13th morning has a bit more promise with a 3ft, 12-second groundswell from the west and a cross-off wind, combined energy 180. It’s clean, but again, just “surfable.” The water temperature is about average for this time of year.
The following week is mostly small, weak, and crossed-up. Monday the 14th morning has a clean offshore wind from the NE with 2ft waves, but it’s ordinary. The best-looking morning in the whole run is Thursday the 24th: a clean, glassy offshore wind from the NNE, with a 2ft, 13-second west swell, and combined energy of 182. That’s the standout – a long-period groundswell, so it’ll have some shape and better energy, but it’s still small. For a beginner break, this is about as good as it gets in this forecast.
Still, overall, there’s a massive gap of days with no real recommendations. Most of the time the wind is onshore, cross-shore, or just too strong, and the waves are tiny. It’s a quiet period for Les Dunes, but that’s how it goes sometimes.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Fri afternoon, min 15°C on Wed morning). Winds decreasing (fresh winds from the WNW on Tue night, light winds from the ENE by Wed night). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon afternoon, min 18°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 | W 9 | W 9 | WNW 10 | WNW 8 | W 8 | W 8 | WNW 10 | W 10 | W 9 | W 8 | W 8 | WNW 13 | W 12 | W 10 | W 10 | WNW 10 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 599 | 269 | 230 | 85 | 41 | 29 | 19 | 106 | 192 | 127 | 64 | 61 | 60 | 180 | 133 | 98 | 100 | 64 | 59 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | cross-off | cross | cross-off | off | cross | off |
High Tide | 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 | 7:06AM4.21m | 7:20PM4.19m | |||||||
Low Tide | 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 | 1:18PM0.03m | 1:38AM0.20m | ||||||
 | | |  |  | | | | | | | | | | | | | | | |
 | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — | 7:39 | — | — | 7:41 | — | — | 7:43 | — | — |
 | 8:34 | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 17 | 18 | 18 | 16 | 18 | 17 | 19 | 20 | 19 | 19 | 21 | 20 | 20 | 22 | 22 | 21 | 26 | 27 |
Feels °C | 13 | 14 | 13 | 14 | 15 | 16 | 15 | 18 | 19 | 18 | 20 | 20 | 18 | 19 | 19 | 18 | 21 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | W 9 | W 9 | WNW 10 | WNW 8 | W 8 | W 8 | WNW 10 | W 10 | W 9 | W 8 | W 8 | W 8 | W 12 | W 10 | W 10 | WNW 10 | W 9 | W 9 |
| kJ | 599 | 269 | 230 | 85 | 41 | 29 | 19 | 106 | 192 | 127 | 64 | 61 | 46 | 180 | 133 | 98 | 100 | 64 | 59 |
Swell 2 Height (m) Direction Period (s) | — | WNW 11 | W 9 | W 8 | W 8 | NW 9 | WNW 8 | W 8 | — | — | W 18 | W 16 | WNW 13 | — | — | — | — | — | NW 10 |
| kJ | — | 12 | 122 | 71 | 35 | 20 | 7 | 10 | — | — | 6 | 20 | 60 | — | — | — | — | — | 23 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 13 | W 12 | W 11 | — | — | — | — | — | W 10 | — | — | — | — | — | — |
| kJ | — | — | — | — | 3 | 3 | 9 | — | — | — | — | — | 31 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | WNW 3 | WSW 8 | — | — | — | — | NW 3 | — | — | NNW 3 | NNE 2 | NW 3 | N 3 |
| kJ | — | — | — | — | — | — | 1 | 11 | — | — | — | — | 1 | — | — | 4 | 1 | 3 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 9 | 3 | 22 | 0 | 3 | 237 | 22 | 22 | 68 | 0 | 0 | 226 | 0 | 0 | 22 | 0 | 0 | 22 | 0 |
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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