Surf Forecasts:
Les Dunes surf forecast from 13 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 5AM (local time) - 4ft (1.2m), 7s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 8PM (local time) - 4.5ft (1.4m), 16s period, W swell with 967 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 11PM (local time) - 2.5ft (0.8m), 11s period with WNW 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 11PM. The primary swell is predicted to be 0.8m and 11s 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 1.4m 16s and forecast to arrive on Friday (Sep 18) 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 0.4m 4s period and expected on Wednesday (Sep 16) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 13th Sep) | 2.5ft (0.8m) 11s |
| Best Surf | 5AM (Wed 16th Sep) | 4ft (1.2m) 7s |
| Most Powerful | 8PM (Fri 18th Sep) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Rusty here, looking at Les Dunes.
Alright, to be honest, the next two weeks are mostly flat or junk. You’ve gotta pick your moments. The best bet is the morning of Wednesday the 16th. We’ve got a clean 4ft swell from the west-northwest, period 10 seconds, and light north-northwest winds keeping it glassy. The combined energy is moderate (235). It might be a bit too big for this break if you’re a beginner, but for the rest of us, it’s about as good as it gets in this stretch. Crowds can be around sometimes.
Before that, Sunday the 13th morning is tiny, about 3ft from the west, period 10 seconds, with glassy conditions and light east winds. Energy is weak (127). The water is 70°, a touch warmer than average. It’s surfable but nothing special. Monday the 14th morning is similar, 2ft and clean but weak.
Now, if you can be patient, Monday the 21st morning is looking like the real winner. That’s a week and a day out, so don’t book the trip yet, but we’ve got a 3ft west-northwest groundswell with a long period of 14 seconds. Light east winds, glassy, and the energy is strong (341). It’s flagged as good surf conditions. That’s the one to keep an eye on.
After that, from Tuesday the 22nd onward, it’s all small and weak. Swells under 2ft, mostly clean with offshore winds but no power. Tuesday the 22nd afternoon has a 4ft swell but with a super short period of 5 seconds, so it’s not gonna be any good. The rest of the run is tiny and not worth paddling out for.
So, for the short term, Wednesday the 16th morning is your best early call. For the long haul, Monday the 21st morning has real potential. Everything else is a skip.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon night, min 15°C on Tue night). Winds increasing (calm on Mon morning, fresh winds from the NW by Tue night). | Days 5-7 Weather SummarySome drizzle, heaviest during Thu night. Very mild (max 18°C on Wed afternoon, min 14°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 11 | W 10 | W 10 | W 10 | W 9 | W 9 | WNW 8 | WNW 6 | WNW 10 | WNW 10 | WNW 10 | W 11 | WNW 10 | WNW 6 | WNW 9 | W 16 | W 15 | W 14 | WNW 13 | WNW 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 150 | 138 | 96 | 88 | 59 | 54 | 111 | 117 | 240 | 295 | 469 | 229 | 363 | 89 | 206 | 402 | 619 | 400 | 218 | 128 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | glassy | cross-on | off | cross | cross | cross-off | cross-off | cross | cross-off | cross-on | cross-on | cross-off | cross-off | cross-on | cross-on | on | on | cross-off |
High Tide | 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 | 9:55AM2.95m | 11:15PM2.69m | |||||||
Low Tide | 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 | 5:17PM1.58m | ||||||||
 |  | | | | | |  | | | |  | |  |  | | | | | | |
 | — | — | 7:43 | — | — | 7:43 | — | — | 7:45 | — | — | 7:46 | — | — | 7:48 | — | — | 7:48 | — | — |
 | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | — | 8:12 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 23 | 22 | 23 | 25 | 26 | 22 | 22 | 20 | 16 | 18 | 18 | 17 | 18 | 18 | 15 | 17 | 17 | 18 | 19 | 18 |
Feels °C | 22 | 19 | 22 | 23 | 22 | 21 | 17 | 16 | 13 | 13 | 15 | 16 | 15 | 14 | 14 | 16 | 15 | 16 | 17 | 19 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 11 | WNW 6 | WNW 10 | W 13 | WNW 10 | W 11 | WNW 10 | W 10 | WNW 9 | W 9 | W 15 | W 14 | WNW 13 | WNW 11 |
| kJ | 150 | 138 | 96 | 88 | 59 | 54 | 10 | 117 | 240 | 14 | 469 | 229 | 363 | 68 | 206 | 176 | 619 | 400 | 218 | 128 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | WNW 10 | W 12 | — | WNW 11 | — | — | WNW 12 | — | — | — | W 17 | W 16 | — | — | — | — |
| kJ | — | — | — | — | 36 | 3 | — | 37 | — | — | 150 | — | — | — | 92 | 402 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NNW 3 | — | — | — | — | WNW 8 | NNE 4 | — | WNW 10 | — | — | W 10 | WNW 6 | — | — | — | — | — | NNE 2 |
| kJ | — | 1 | — | — | — | — | 111 | 4 | — | 295 | — | — | 204 | 89 | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 22 | 0 | 0 | 237 | 0 | 9 | 172 | 9 | 3 | 173 | 9 | 42 | 68 | 9 | 3 | 68 | 68 | 128 | 68 |
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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