Surf Forecasts:
Les Dunes surf forecast from 3 Sep 2026:
- Best quality surf: Monday 7 Sep, 8PM (local time) - 5ft (1.5m), 12s period, W swell with cross-shore winds.
- Most powerful swell: Monday 7 Sep, 11PM (local time) - 5ft (1.6m), 11s period, W swell with 663 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 2AM (local time) - 2.5ft (0.7m), 8s 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 Friday (Sep 04) at 2AM. The primary swell is predicted to be 0.7m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 1.6m 11s and forecast to arrive on Monday (Sep 07) at 11PM. Winds are predicted to be cross-shore 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 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 4th Sep) | 2.5ft (0.7m) 8s |
| Best Surf | 8PM (Mon 7th Sep) | 5ft (1.5m) 12s |
| Most Powerful | 11PM (Mon 7th Sep) | 5ft (1.6m) 11s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here, with the imperial version.
The only spot we’re watching is Les Dunes, and for the bulk of the next sixteen days, it’s a waiting game. The first real window doesn’t open until Saturday, September 5th. From now through Friday, the 4th, it’s a total loss: cross-onshore winds, weak little swell around 2 ft, and poor conditions. Nothing but frustration.
On Saturday morning, September 5th, we finally get a clean run. The wind goes light offshore from the NE, the swell pushes to about 3 ft from the WNW, and the combined wave energy hits 215 (moderate). The swell period is a short 9 seconds, so the shape will be a little lumpy, but the clean surface makes it workable. The water temp is 69°, which is about normal for this time of year.
Saturday afternoon is the high point. The swell holds around 3 ft from the WNW, but the period stretches to a long 13 seconds, and the combined energy climbs to 282 (moderate). The wind goes light cross-off from the NNW. That’s glassy, lined-up surf. For a beach break, the long period means you might have to wait for the right tide, but the quality will be there. This is the standout session. Expect a few other folks out.
Sunday morning, September 6th, drops back to weak energy (83) and a smaller 2 ft swell with an 11-second period and clean cross-off wind from the SE. Rideable but small. The rest of that week is a messy mix: Monday the 7th shows bigger pulses of energy (328 to 657) but the wind is onshore or cross, so it’s choppy. Wednesday the 9th might give a clean morning with 3 ft waves and light cross-off wind, but the energy is only 166—okay, but not special.
From Thursday the 10th into the second week, it’s mostly small stuff under 2 ft with onshore or cross conditions. There are a few clean mornings with light offshore winds (like Sunday, September 13th and Monday, September 14th), but the waves barely push 2 ft. Ankle-to-knee high. Not worth the drive unless you’re just wanting to get wet.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat night, min 16°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue afternoon. Warm (max 26°C on Sun afternoon, min 14°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
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) | WNW 8 | W 8 | W 8 | W 8 | W 9 | WNW 9 | WNW 9 | WNW 13 | WNW 12 | W 11 | W 10 | W 5 | W 14 | W 12 | W 11 | W 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 58 | 57 | 61 | 68 | 73 | 77 | 115 | 282 | 189 | 82 | 92 | 39 | 236 | 657 | 526 | 153 | 329 | 135 | 166 | 212 | 55 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross | cross | cross-off | off | cross-off | off | cross-off | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-off | cross-off | cross-on | cross-off |
High Tide | 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 | 3:47PM4.00m | 4:18AM3.93m | 4:33PM4.32m | 4:59AM4.17m | |||||||
Low Tide | 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 | 8:59AM0.79m | 9:35PM0.44m | 9:53AM0.43m | 10:24PM0.11m | ||||||||
 | |  | | | | |  |  | | |  | | | |  |  | | | | | |
 | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — |
 | — | 8:43 | — | — | 8:40 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:31 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 19 | 20 | 20 | 21 | 21 | 20 | 18 | 26 | 28 | 25 | 26 | 21 | 19 | 20 | 18 | 18 | 19 | 18 | 16 | 18 | 17 |
Feels °C | 19 | 19 | 20 | 22 | 20 | 19 | 17 | 25 | 26 | 22 | 24 | 20 | 20 | 19 | 16 | 16 | 17 | 15 | 14 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | W 8 | W 8 | W 8 | W 9 | WNW 9 | WNW 9 | WNW 13 | WNW 12 | W 11 | — | WNW 9 | W 14 | W 12 | — | W 10 | — | WNW 9 | WNW 9 | WNW 9 | WNW 8 |
| kJ | 58 | 57 | 61 | 68 | 73 | 77 | 115 | 282 | 189 | 82 | — | 28 | 236 | 657 | — | 153 | — | 135 | 166 | 212 | 55 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 16 | W 14 | — | — | — | — | W 16 | W 9 | — | — | — | — | — | — | — | NW 4 |
| kJ | — | — | — | — | — | 5 | 100 | — | — | — | — | 5 | 26 | — | — | — | — | — | — | — | 15 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 16 | W 9 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 5 | 25 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NW 3 | NE 3 | — | ESE 3 | SE 2 | W 10 | W 5 | W 6 | — | W 11 | WNW 6 | WNW 9 | WNW 6 | — | WNW 8 | NE 3 |
| kJ | — | — | — | — | — | 3 | 1 | — | 5 | 1 | 92 | 39 | 41 | — | 526 | 111 | 329 | 84 | — | 125 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 22 | 0 | 9 | 22 | 9 | 0 | 0 | 0 | 19 | 226 | 173 | 9 | 283 | 22 | 9 | 68 | 22 | 0 | 293 | 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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