Surf Forecasts:
Les Dunes surf forecast from 23 Aug 2026:
- Best quality surf: Thursday 27 Aug, 11AM (local time) - 4.5ft (1.4m), 8s period, WSW swell with cross-shore winds.
- Most powerful swell: Friday 28 Aug, 5PM (local time) - 5ft (1.6m), 12s period, WSW swell with 692 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 11AM (local time) - 2.5ft (0.8m), 7s period with WSW 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 Wednesday (Aug 26) at 11AM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.3m and 10s. Another secondary swell of 0.2m and 4s is also forecast. 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 1.6m 12s and forecast to arrive on Friday (Aug 28) at 5PM. Winds are predicted to be 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 Monday (Aug 24) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 26th Aug) | 2.5ft (0.8m) 7s |
| Best Surf | 11AM (Thu 27th Aug) | 4.5ft (1.4m) 8s |
| Most Powerful | 5PM (Fri 28th Aug) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for this stretch.
We’re looking at a pretty rough run to start off. The first few days are flat or blown out, so don’t expect much. The first real hope comes on Thursday, 27th August, but even that’s a bit of a tease. The morning shows a 5ft swell from the WSW with a short 8-second period and light cross-shore breeze, and the combined energy is moderate (270). The surf is supposed to be clean but the swell might actually be too big for this spot. If you’re a beginner, this is probably too much, and the crowds here are sometimes an issue, so keep that in mind.
The rest of the week into the weekend is a write-off, honestly. Strong onshore winds and building swell, with wave energy climbing into the hundreds and even 692 on Friday afternoon, but it’s all messy. The wind is just howling from the WNW at 25 mph on Friday morning, creating a real washing machine. The water temp is about average for this time of year, nothing unusual.
The standout is looking like Monday, 7th September. That morning we’ve got a 4ft swell from the west with a 10-second period and a clean, cross-off wind from the east at 15 mph. The energy is strong (363). But the real gem is that Monday afternoon: glassy conditions, 3ft swell from the west, 10-second period, and the combined energy jumps to 413. This is the best on offer, clean and promising. However, the swell might be borderline for this break, so if you’re a beginner, it could be a bit much.
Tuesday, 8th September, is a wild card. The morning shows a 8ft swell from the west with a very long 17-second period and glassy conditions. The energy is off the charts (4167). That’s expert territory, and for a point or reef, that long period could be incredible, but here it might just be too big. Keep an eye on it, but don’t get your hopes up unless you’re very experienced.
In short, the first week is mostly a bust. The only real chance for a decent surf is that Monday, 7th September, afternoon. The run-up to it is full of wind and slop. Don’t hold your breath for the rest.
Rusty
Short Range ForecastModerate rain (total 11mm), heaviest on Mon afternoon. Warm (max 28°C on Sun night, min 18°C on Mon morning). Winds decreasing (fresh winds from the ENE on Sun night, light winds from the SW by Tue night). | Days 5-7 Weather SummaryHeavy rain (total 24mm), heaviest during Thu night. Warm (max 21°C on Wed night, min 17°C on Thu night). Winds increasing (light winds from the SW on Wed night, near gales from the SW by Fri morning). | ||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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) | WSW 11 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | SW 4 | SW 5 | WSW 7 | WSW 7 | WSW 4 | WSW 8 | WSW 8 | WSW 9 | WSW 8 | WSW 12 | WSW 8 | W 8 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 44 | 38 | 32 | 15 | 13 | 11 | 24 | 57 | 53 | 26 | 270 | 207 | 307 | 273 | 692 | 521 | 489 | 297 | 116 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | on | on | on | on | cross-off | cross-off | on | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on |
High Tide | 3:30AM3.12m | 3:46PM3.39m | 4:09AM3.37m | 4:22PM3.67m | 4:41AM3.60m | 4:53PM3.92m | 5:10AM3.82m | 5:21PM4.14m | 5:38AM3.99m | 5:48PM4.31m | 6:05AM4.13m | 6:16PM4.41m | |||||||
Low Tide | 8:32PM1.40m | 8:55AM1.33m | 9:29PM1.12m | 9:45AM1.04m | 10:13PM0.81m | 10:25AM0.73m | 10:51PM0.52m | 11:02AM0.46m | 11:26PM0.27m | 11:37AM0.24m | 00:00AM0.09m | 12:11PM0.10m | 00:33AM-0.01m | ||||||
 |  |  |  |  |  | | | |  | | |  | | |  | | | | |
 | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — |
 | 9:04 | — | — | 9:01 | — | — | 9:00 | — | 8:58 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — |
mm | — | 1 | 6 | — | — | 2 | — | — | 2 | — | — | 6 | 6 | 5 | — | 3 | 3 | 1 | — |
Temp °C | 28 | 21 | 24 | 22 | 21 | 22 | 21 | 22 | 27 | 21 | 20 | 21 | 18 | 19 | 19 | 19 | 19 | 20 | 19 |
Feels °C | 23 | 17 | 24 | 22 | 20 | 20 | 21 | 21 | 25 | 16 | 20 | 18 | 15 | 10 | 15 | 15 | 15 | 17 | 18 |
Swell 1 Height (m) Direction Period (s) | WSW 11 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WNW 10 | WSW 7 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | WSW 9 | W 14 | WSW 12 | — | — | W 8 | W 8 |
| kJ | 44 | 38 | 28 | 15 | 13 | 6 | 20 | 57 | 53 | 15 | 270 | 207 | 307 | 94 | 692 | — | — | 297 | 116 |
Swell 2 Height (m) Direction Period (s) | NW 6 | W 6 | WSW 9 | W 14 | W 12 | W 11 | S 4 | WNW 10 | WNW 9 | WNW 8 | — | W 10 | — | WNW 11 | — | — | — | — | — |
| kJ | 2 | 1 | 32 | 4 | 3 | 10 | 3 | 18 | 16 | 14 | — | 74 | — | 23 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | NW 7 | N 6 | — | W 9 | W 8 | W 8 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 2 | 1 | — | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ENE 4 | E 4 | SSE 4 | S 4 | SW 4 | SW 4 | SW 5 | S 4 | SE 3 | WSW 4 | — | — | — | WSW 8 | — | WSW 8 | W 8 | — | — |
| kJ | 11 | 9 | 6 | 12 | 11 | 11 | 24 | 1 | 2 | 26 | — | — | — | 273 | — | 521 | 489 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 89 | 469 | 502 | 226 | 237 | 237 | 151 | 0 | 3 | 11 | 3 | 136 | 227 | 256 | 430 | 273 | 283 | 68 | 125 |
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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