
Surf Forecasts:
Les Dunes surf forecast from 14 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 11PM (local time) - 4.5ft (1.3m), 5s period, NW swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 5PM (local time) - 4.5ft (1.4m), 16s period, WNW swell with 991 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 5AM (local time) - 2.5ft (0.8m), 10s 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 Monday (Sep 14) at 5AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.2m and 2s. The wind is predicted to be 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 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 0.7m 4s period and expected on Sunday (Sep 20) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 14th Sep) | 2.5ft (0.8m) 10s |
| Best Surf | 11PM (Tue 15th Sep) | 4.5ft (1.3m) 5s |
| Most Powerful | 5PM (Fri 18th Sep) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about the next couple of weeks at Les Dunes.
Honestly, the next few days are a bit of a struggle. We've got a lot of small, weak swell with poor wind, making it hard to get excited. There are a few windows of opportunity, but nothing to write home about until later.
The standout session in the entire forecast is Monday the 21st. We've got clean, glassy conditions in the morning with a light offshore breeze. The swell is a clean 3 ft from the West with a long 14-second period, giving it real energy (429 combined energy). This will be the best the break looks all period. It's a fairly consistent spot, so you can expect some fun ones. The water temp is about average for this time of year.
Before that, there are a few other moments. Friday morning the 18th looks interesting on paper, with a 4 ft swell and clean cross-off wind, but the energy is a very strong 381, and the forecast warns it might actually be too big for this beginner-friendly break. Same for Friday afternoon when a massive 5 ft groundswell with a 16-second period and 991 combined energy rolls in – that's expert territory only, and it's breaking too straight for the beach setup.
The rest of the first week is pretty bleak. Small swells under 3 ft, cross or onshore winds, and weak energy. Tuesday the 22nd morning has a little 2 ft swell with offshore wind, but it's tiny and not worth paddling out for.
After the 21st, the surf dries up fast. From Wednesday the 23rd all the way through to Sunday the 29th, the swell drops to 1.0 ft - 2 ft. The wind is clean and offshore, but there's barely any wave energy (values from 23 to 82 combined energy). It's just not doing anything. That's a solid week of flatness. The last glimmer is Sunday afternoon the 27th, with 1 ft from the West, but again, not enough to get wet for.
So the play is clear: if you can, get out on Monday morning the 21st. That's the one. The rest is a waiting game.
- Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Mon afternoon, min 14°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 19°C on Sat afternoon, min 13°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 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 | WNW 16 | WNW 14 | WNW 13 | WNW 12 | WNW 11 |
Wave Graph | |||||||||||||||||||
138 | 96 | 88 | 59 | 54 | 111 | 128 | 197 | 245 | 400 | 229 | 133 | 115 | 254 | 991 | 613 | 269 | 189 | 123 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-on | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | on | cross-on | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-off |
High Tide | 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 | 21 | 22 | 25 | 25 | 21 | 21 | 19 | 16 | 18 | 18 | 16 | 18 | 18 | 16 | 17 | 17 | 18 | 19 | 18 |
Feels °C | 18 | 21 | 22 | 21 | 20 | 17 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 13 | 13 | 14 | 17 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 9 | W 9 | W 11 | WNW 11 | WNW 10 | W 13 | WNW 10 | W 11 | WNW 10 | W 10 | WNW 9 | WNW 16 | WNW 14 | WNW 13 | WNW 12 | WNW 11 |
138 | 96 | 88 | 59 | 54 | 10 | 37 | 197 | 3 | 400 | 229 | 133 | 67 | 254 | 991 | 613 | 269 | 189 | 123 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | WNW 10 | W 12 | — | — | — | WNW 14 | WNW 12 | — | — | — | W 16 | — | — | — | — | — |
— | — | — | 36 | 3 | — | — | — | 18 | 115 | — | — | — | 127 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NNW 2 | — | — | — | — | WNW 8 | WNW 6 | — | WNW 10 | — | — | W 4 | WNW 6 | — | — | — | — | — | — |
1 | — | — | — | — | 111 | 128 | — | 245 | — | — | 14 | 115 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 9 | 0 | 22 | 293 | 9 | 0 | 172 | 6 | 22 | 68 | 22 | 3 | 22 | 9 | 22 | 22 | 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.










