Surf Forecasts:
Les Dunes surf forecast from 3 Sep 2026:
- Best quality surf: Saturday 5 Sep, 8AM (local time) - 3ft (0.9m), 9s period, WNW swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 8PM (local time) - 4.5ft (1.4m), 13s period, W swell with 630 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 1.4m 13s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Sep 06) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 4th Sep) | 2.5ft (0.7m) 8s |
| Best Surf | 8AM (Sat 5th Sep) | 3ft (0.9m) 9s |
| Most Powerful | 8PM (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 again. Let's break down the same forecast in feet and miles per hour.
The first few days are sluggish, nothing to get excited about. Water temp is about 69°F, which is just a touch warmer than the average for this time of year.
The first real chance to paddle out is on the morning of Saturday, September 5th. We’ll see clean 2-3ft waves from the WNW with a light offshore breeze from the NNE. The energy is moderate, so it's not a total pushover. The best session of the whole outlook, though, is the afternoon of that same day. The swell stays around 3ft from the WNW, but the period stretches out to a very long 13 seconds. That's proper groundswell, with a lot of energy behind it. A light cross-offshore wind from the north will keep it glassy. This is the one to circle on your calendar.
After that, it goes downhill fast. Sunday the 6th is a washout. The next week is mostly a mess of onshore winds and choppy conditions. We get a bump in size on the 7th and 8th, with waves hitting 4-5ft and a lot of energy in the water, but the wind is cross-onshore and strong, making it a bumpy, blown-out mess. That setup is looking more like a kiteboarding day than a surfing one.
We get a brief reprieve on the morning of Wednesday the 9th with glassy conditions, but the swell is tiny. The next decent chance is on the morning of Sunday, September 13th. The wind is light and cross-offshore from the east, and we have 2-3ft swell from the WNW with a 10-second period and a good hit of energy. It’s a small window, but it could be clean. The afternoon blows out again.
After that, it's a long stretch of small, weak swell and poor wind. Nothing else really stands out as a winner. It's a slow couple of weeks, but that's how it goes sometimes.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun morning. Warm (max 28°C on Sat night, min 16°C on Sat morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Tue afternoon. Warm (max 21°C on Mon afternoon, min 15°C on Wed morning). Wind will be generally light. | ||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | ||||||||||||||
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 8 | W 8 | W 9 | W 9 | WNW 9 | WNW 13 | WNW 12 | W 11 | W 10 | W 9 | W 15 | W 13 | W 12 | W 11 | WNW 10 | W 9 | W 10 | WNW 10 | WNW 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 61 | 68 | 73 | 73 | 115 | 282 | 189 | 110 | 68 | 43 | 159 | 417 | 617 | 389 | 463 | 133 | 212 | 170 | 125 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross | cross-off | off | cross-off | off | cross-off | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | on |
High Tide | 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 | 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 | |||||||
 | | |  | | |  |  | | |  |  | | | | | | |  | |
 | — | 7:30 | — | — | 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 | — | — | — | — | — | — | 2 | — | — | — | 1 |
Temp °C | 20 | 21 | 21 | 20 | 19 | 26 | 28 | 22 | 27 | 20 | 20 | 21 | 19 | 18 | 19 | 18 | 17 | 18 | 17 |
Feels °C | 21 | 22 | 19 | 19 | 18 | 24 | 25 | 20 | 25 | 18 | 20 | 20 | 18 | 14 | 15 | 15 | 15 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 9 | W 9 | WNW 9 | WNW 13 | WNW 12 | W 11 | W 10 | W 9 | W 15 | W 13 | W 12 | W 11 | WNW 10 | W 9 | W 10 | WNW 10 | W 8 |
| kJ | 61 | 68 | 73 | 73 | 115 | 282 | 189 | 110 | 68 | 43 | 159 | 417 | 617 | 389 | 463 | 133 | 212 | 170 | 5 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 16 | W 13 | — | — | — | — | W 18 | W 15 | — | — | — | — | WNW 12 | W 9 | W 9 | W 8 |
| kJ | — | — | — | 5 | 87 | — | — | — | — | 6 | 159 | — | — | — | — | 15 | 14 | 6 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 18 | NW 9 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 6 | 21 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 2 | NW 3 | NE 2 | — | E 3 | ESE 2 | — | W 4 | W 9 | W 5 | — | — | W 10 | WNW 5 | — | — | WNW 10 |
| kJ | — | — | 1 | 6 | 1 | — | 7 | 1 | — | 6 | 97 | 19 | — | — | 332 | 49 | — | — | 125 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 22 | 0 | 0 | 22 | 22 | 0 | 0 | 0 | 3 | 237 | 223 | 22 | 68 | 22 | 22 | 22 | 9 | 0 | 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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