
Surf Forecasts:
Les Dunes surf forecast from 12 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 8AM (local time) - 4.5ft (1.3m), 8s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 5PM (local time) - 3.5ft (1.0m), 16s period, W swell with 490 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 2AM (local time) - 2ft (0.6m), 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 Sunday (Sep 13) at 2AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.4m and 10s. 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 1.0m 16s and forecast to arrive on Friday (Sep 18) at 5PM. 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 Thursday (Sep 17) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 13th Sep) | 2ft (0.6m) 8s |
| Best Surf | 8AM (Wed 16th Sep) | 4.5ft (1.3m) 8s |
| Most Powerful | 5PM (Fri 18th Sep) | 3.5ft (1.0m) 16s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s take a look at what’s coming up for Les Dunes.
First off, we’ve got a bit of a slow start. The water’s a touch warmer than normal for this time of year, sitting at 69°, so it feels pretty nice if you’re just getting wet, but the surf is pretty underwhelming for the first few days.
Saturday the 12th starts off with tiny 2ft swell from the west. The morning is glassy and clean, but the waves are weak with combined energy at 64, so it’s a real small-wave grovel. Only one to mess around on a foamie. The afternoon goes straight to junk with a cross-onshore wind.
Sunday the 13th morning is slightly better – 3ft west swell, glassy, and the energy bumps up to 127, so there’s a bit more push. It’s still pretty average, but the clean conditions make it the best of a flat run. Sunday afternoon gets chopped up again.
Monday the 14th morning sees a clean window with a light cross-offshore breeze and 2ft west swell, but it’s still energy in the low 90s. It’s surfable but nothing to write home about.
Then we hit a real quiet spell. Tuesday the 15th and most of Wednesday the 16th are poor. Wednesday morning actually sees a jump in swell – 4ft from the WNW, with moderate wave energy at 215 – but the forecast says it’s actually too big for this break and the wind is howling. Not a good combo.
Thursday the 17th and Friday the 18th have some size, but the winds are messy. Friday morning is the one bright spot: 3ft WNW swell, a light cross-offshore breeze, clean conditions, and energy at 209. It looks good, but the crowd factor is “sometimes” here, so you might have some company. Still, that’s the pick for the first week.
Saturday the 19th and Sunday the 20th are a mixed bag. Sunday morning is glassy with 2ft WNW swell and 126 energy – clean but small. The afternoon on Sunday sees a big spike in energy to 587 and a 15-second period, but it’s cross-shore and choppy, so the quality is ruined. That long-period groundswell would be better at a point or reef, not here.
Monday the 21st morning is another stand-out: clean, light offshore wind from the ENE, 3ft WNW swell with a nice 13-second period, and energy at 229. This is the best-looking session in the whole run. Clean, lined-up, and worth getting out of bed for.
After that, it fades fast. From Tuesday the 22nd through to Saturday the 26th, the swell drops to tiny – 1ft or less – and energy falls below 100. A real flat spell with nothing doing.
Then Sunday the 27th throws in a late surprise: a 2ft west swell with a very long 16-second period, clean offshore wind, and energy at 211. It’s small, but that long period will push in some clean, fun little lines if you’re on the right board. However, that afternoon turns cross-onshore again.
Best bet: Monday the 21st morning. Clean offshore, 3ft WNW, 13-second period, and solid energy. Early session.
Second pick: Friday the 18th morning for clean 3ft bumps.
If you’re a beginner, anything over 5ft is a paddling workout, and that only happens on a couple of days here – but mostly the swell stays small and friendly. Just watch the wind windows.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 17°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Tue afternoon, min 14°C on Tue night). Winds increasing (light winds from the ESE on Tue morning, fresh winds from the NNW by Tue night). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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) | W 8 | W 8 | W 8 | W 10 | WNW 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | WNW 7 | WNW 8 | WNW 8 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | W 16 | W 14 |
Wave Graph | |||||||||||||||||||||
64 | 63 | 49 | 127 | 150 | 138 | 96 | 90 | 59 | 38 | 36 | 243 | 196 | 211 | 294 | 236 | 136 | 98 | 121 | 490 | 417 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | glassy | cross | cross-off | cross-off | cross-on | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | cross | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 6:22PM4.58m | 6:39AM4.33m | 6:52PM4.43m | 7:06AM4.21m | 7:20PM4.19m | 7:31AM4.03m | 7:46PM3.90m | 7:56AM3.80m | 8:12PM3.59m | 8:24AM3.53m | 8:43PM3.27m | 9:00AM3.24m | 9:25PM2.95m | ||||||||
Low Tide | 12:02PM-0.18m | 00:25AM-0.21m | 12:40PM-0.13m | 1:02AM-0.06m | 1:18PM0.03m | 1:38AM0.20m | 1:56PM0.30m | 2:15AM0.52m | 2:35PM0.63m | 2:54AM0.88m | 3:18PM0.99m | 3:38AM1.24m | 4:10PM1.33m | 4:34AM1.53m | |||||||
7:39 | — | — | 7:41 | — | — | 7:43 | — | — | 7:43 | — | — | 7:45 | — | — | 7:46 | — | — | 7:48 | — | — | |
— | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 20 | 20 | 21 | 23 | 22 | 22 | 26 | 26 | 24 | 25 | 20 | 16 | 18 | 18 | 16 | 18 | 18 | 14 | 17 | 16 |
Feels °C | 18 | 19 | 18 | 21 | 21 | 19 | 21 | 25 | 24 | 23 | 24 | 17 | 12 | 13 | 14 | 13 | 14 | 15 | 13 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 10 | WNW 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | WNW 11 | WNW 8 | W 13 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | W 16 | W 14 |
64 | 63 | 49 | 127 | 150 | 138 | 96 | 90 | 59 | 38 | 36 | 37 | 196 | 3 | 294 | 236 | 136 | 98 | 121 | 490 | 417 | |
Swell 2 Height (m) Direction Period (s) | — | W 16 | WNW 10 | — | — | — | — | — | NW 10 | W 12 | W 11 | — | W 10 | — | W 12 | — | — | — | W 16 | — | — |
— | 5 | 34 | — | — | — | — | — | 23 | 3 | 10 | — | 19 | — | 11 | — | — | — | 77 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | W 14 | — | — | — | — | — | — | W 13 | — | — | — | — | — | — | — | — | W 12 | — | — |
— | — | 33 | — | — | — | — | — | — | 12 | — | — | — | — | — | — | — | — | 11 | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | NNW 3 | — | — | NNW 3 | — | — | — | SSE 2 | — | WNW 7 | — | WNW 8 | N 3 | — | WNW 3 | WNW 4 | — | — | — |
— | — | 1 | — | — | 1 | — | — | — | 1 | — | 243 | — | 211 | 5 | — | 7 | 13 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 226 | 0 | 0 | 22 | 3 | 0 | 22 | 0 | 129 | 584 | 172 | 9 | 172 | 9 | 22 | 226 | 22 | 0 | 283 | 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.










