Surf Forecasts:
Les Dunes surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 11PM (local time) - 5ft (1.5m), 9s period, WNW swell with cross-shore winds.
- Most powerful swell: Thursday 27 Aug, 5PM (local time) - 7.5ft (2.3m), 8s period, WSW swell with 688 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 11PM (local time) - 5ft (1.5m), 9s 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 Thursday (Aug 20) at 11PM. The primary swell is predicted to be 1.5m and 9s period with a secondary swell of 1.2m and 9s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 2.3m 8s and forecast to arrive on Thursday (Aug 27) 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 0.9m 4s period and expected on Sunday (Aug 23) at 8AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 20th Aug) | 5ft (1.5m) 9s |
| Best Surf | 11PM (Thu 20th Aug) | 5ft (1.5m) 9s |
| Most Powerful | 5PM (Thu 27th Aug) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
G'day, Rusty here. Look, I've had a good look at the charts for Les Dunes, and to be honest, it's a pretty grim run for the next couple of weeks. For a spot that's described as "fairly consistent," this is a real dry spell. We're looking at a solid gap with no good surf until the 26th of August, so just over a week of waiting.
The water temperature is sitting at 70°, which is pretty much bang on average for this time of year, so at least a paddle won't be a shock to the system.
We finally get a bit of a glimmer on Wednesday the 26th of August. The morning is a write-off, but by Wednesday afternoon, the wind swings to a light offshore from the north, which will clean things right up. The problem is the swell is predicted to be too big for this break. We're looking at a 5ft swell from the west-northwest with a short period of 8 seconds, and the combined energy is moderate at 277. It's a real shame the wind is right, but the size is just too much for this break.
The next real opportunity is a long way off. On the 2nd of September, Wednesday morning, we get a clean, glassy morning with a light north-northwest cross-offshore breeze. The swell is 5ft from the west-southwest, period 8 seconds, and the energy is moderate at 232. Again, the system says it's too big for the break, so it's a bit of a tease.
Then, the 3rd and 4th of September are the standout days in the whole forecast. On Thursday the 3rd, we have clean offshore winds from the north-northeast all day, with a solid 6ft west-southwest swell. The energy is a chunky 337. On Friday the 4th, it's the same story: offshore winds from the east-northeast, a 7ft swell from the west-northwest, and the energy jumps up to a strong 862. Both days get the "wind and tide favorable, but the swell is predicted to be too big for this break" warning. For a beginner-friendly spot, 6ft to 7ft is pushing it, and for a beach break, that's expert territory. The wind will be perfect, but the size will be a handful for anyone but the most experienced.
So, if you're a beginner, there's really nothing on the cards for the next 16 days. The forecasts are a long way out for that early September window, so keep an eye on it, but don't hold your breath. For now, it's a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 14°C on Sat morning). Winds increasing (calm on Sat afternoon, fresh winds from the ENE by Sun morning). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Mon afternoon. Warm (max 29°C on Sun night, min 19°C on Mon morning). Winds decreasing (fresh winds from the ENE on Sun night, light winds from the SSE by Tue morning). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 9 | W 9 | W 10 | WNW 9 | WNW 8 | WNW 8 | W 9 | W 9 | WSW 13 | WSW 11 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | SW 5 | WSW 8 | WSW 7 | WSW 9 | W 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 265 | 217 | 188 | 132 | 90 | 37 | 26 | 14 | 18 | 39 | 38 | 28 | 15 | 13 | 41 | 402 | 125 | 232 | 115 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-on | on | cross | on | on | cross | on | off |
High Tide | 10:32PM2.96m | 11:17AM2.94m | 00:57AM2.80m | 1:45PM2.94m | 2:34AM2.91m | 2:58PM3.13m | 3:30AM3.12m | 3:46PM3.39m | 4:09AM3.37m | 4:22PM3.67m | 4:41AM3.60m | 4:53PM3.92m | |||||||
Low Tide | 5:17AM1.46m | 5:57PM1.52m | 6:29AM1.61m | 7:17PM1.56m | 7:49AM1.56m | 8:32PM1.40m | 8:55AM1.33m | 9:29PM1.12m | 9:45AM1.04m | 10:13PM0.81m | 10:25AM0.73m | 10:51PM0.52m | |||||||
 |  | |  | |  |  | | | |  |  |  | | | | | | | |
 | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — |
 | 9:08 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:01 | — | — | 9:00 | — | 8:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 2 | 2 | — | — | 2 | — | 17 |
Temp °C | 20 | 18 | 19 | 19 | 18 | 22 | 23 | 21 | 28 | 29 | 23 | 27 | 22 | 21 | 22 | 21 | 21 | 23 | 20 |
Feels °C | 18 | 15 | 15 | 15 | 16 | 20 | 20 | 14 | 21 | 22 | 19 | 24 | 22 | 23 | 20 | 20 | 20 | 23 | 19 |
Swell 1 Height (m) Direction Period (s) | — | W 9 | W 10 | WNW 9 | WNW 8 | WNW 8 | W 9 | W 9 | W 8 | WSW 11 | WSW 10 | WSW 9 | WSW 9 | S 4 | W 11 | WSW 8 | WSW 7 | WSW 9 | WNW 9 |
| kJ | — | 217 | 188 | 132 | 90 | 37 | 26 | 14 | 6 | 39 | 38 | 28 | 15 | 9 | 2 | 402 | 125 | 232 | 16 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 8 | NW 8 | NW 7 | WSW 13 | W 7 | N 6 | N 6 | — | WSW 8 | W 8 | WNW 10 | WNW 10 | — | WNW 9 |
| kJ | — | — | — | — | — | 10 | 9 | 2 | 18 | 1 | 1 | 1 | — | 13 | 1 | 10 | 9 | — | 26 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 10 | — | — | NW 7 | NW 7 | — | W 9 | — | W 4 | — | — | — | — | — |
| kJ | — | — | — | — | — | 8 | — | — | 2 | 2 | — | 2 | — | 1 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 9 | — | — | — | — | — | NE 3 | ENE 4 | ENE 3 | ENE 4 | ESE 4 | SE 3 | S 4 | — | SW 5 | — | — | — | W 8 |
| kJ | 265 | — | — | — | — | — | 4 | 18 | 6 | 16 | 7 | 5 | 6 | — | 41 | — | — | — | 115 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 22 | 22 | 293 | 9 | 0 | 3 | 231 | 264 | 237 | 129 | 458 | 181 | 278 | 302 | 302 | 68 | 3 | 22 | 0 |
Best forecast wave conditions in Vendee | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Les Dunes surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest