Surf Forecasts:
Les Dunes surf forecast from 22 Aug 2026:
- Best quality surf: Saturday 29 Aug, 8AM (local time) - 7.5ft (2.3m), 10s period, W swell with cross-onshore winds.
- Most powerful swell: Friday 28 Aug, 2PM (local time) - 13ft (4.0m), 10s period, WSW swell with 2,730 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 8AM (local time) - 7.5ft (2.3m), 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 Saturday (Aug 29) at 8AM. The primary swell is predicted to be 2.3m and 10s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Les Dunes in the next 16 days are 4.0m 10s and forecast to arrive on Friday (Aug 28) at 2PM. 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+) | 8AM (Sat 29th Aug) | 7.5ft (2.3m) 10s |
| Best Surf | 8AM (Sat 29th Aug) | 7.5ft (2.3m) 10s |
| Most Powerful | 2PM (Fri 28th Aug) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down this stretch of surf for Les Dunes.
Honestly, the outlook is a long, slow grind of nothing. The finder is coming up with zero recommendations for the whole 16-day window. The first week and a half is a total bust, and then we get a pulse of energy that’s totally ruined by wind. There’s a gap of about 9 days before we even see a proper wave.
We start off with pathetic, tiny waves. Sunday the 23rd and Monday the 24th are offering up ankle-biters around 0.7ft to 1ft from the W and WSW, with a combined energy barely registering (16 to 43). The wind is cross-off or onshore, but it doesn’t matter – there’s no power. Water temp is about average for the season.
Tuesday the 25th is even worse, with a drop to 0.7ft and a period of 11 seconds, but the energy is a measly 18. It’s onshore and flat. This flat spell drags on through the end of August. Wind is mostly onshore or cross-shore, which would mess up even the smallest bump.
There’s a big spike in swell from Thursday the 27th of August through Saturday the 29th. The swell jumps to 7ft, then 10ft, with combined energy hitting 1966 on Friday afternoon. That’s a lot of water moving. But the wind is howling onshore – strong breeze to near gale from the SW and WSW. The surf is going to be a total mess. This is not a paddle-surfing setup. With that much swell and that much wind, a beach-and-reef setup like Les Dunes looks more interesting for kite surfing than trying to paddle out.
The swell drops back down through the 30th and 31st, with 5ft to 4ft, but the wind is still onshore or cross-on, keeping it lumpy and choppy. The period is short, around 7 to 8 seconds, so no shape.
By the 1st of September, we’re back to tiny waves below 2ft. The only glimmer of hope comes on Monday the 7th of September, when a 2ft swell from the WNW with a long period of 12 seconds shows up. The combined energy is 130 (moderate), and the wind is light cross-onshore. It’s still not a recommendation, but it’s the first sign of a clean-ish lineup with a little bit of push. The long period means it might be better shaped, but it’s still small.
So, to sum it up: there’s no standout session here. The first week is flat, the middle week is blown out, and the second week is too small. The best you can hope for is a quiet, small wave on the 7th, but don’t get your hopes up. This is a blank run for the area, and it’s just one of those times where the forecast might shift.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon afternoon. Warm (max 29°C on Sun afternoon, min 17°C on Sat night). Winds decreasing (fresh winds from the ENE on Sat night, light winds from the SSW by Mon night). | Days 5-7 Weather SummaryHeavy rain (total 25mm), heaviest during Wed night. Warm (max 28°C on Wed afternoon, min 19°C on Wed night). Winds increasing (light winds from the S on Wed morning, strong winds from the WSW by Fri afternoon). | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 9 | WSW 13 | WSW 11 | WSW 10 | WSW 9 | WSW 9 | SW 4 | W 11 | WNW 10 | SW 5 | WNW 9 | W 5 | W 9 | WSW 9 | WSW 10 | WSW 9 | WSW 10 | W 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 36 | 6 | 32 | 44 | 37 | 28 | 15 | 7 | 10 | 20 | 23 | 16 | 44 | 194 | 651 | 992 | 1579 | 1966 | 1631 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | on | on | on | on | on | cross | cross-on | cross-on | on | on | on | on | on | cross-on |
High Tide | 2:34AM2.91m | 2:58PM3.13m | 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 | |||||||
Low Tide | 7:49AM1.56m | 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 | |||||||
 |  | |  |  |  |  |  | |  | | | | | |  | | | | |
 | — | 7:13 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — |
 | 9:06 | — | — | 9:04 | — | — | 9:01 | — | — | 9:00 | — | 8:58 | — | — | 8:57 | — | — | 8:54 | — |
mm | — | — | — | — | 1 | 2 | 1 | — | — | — | — | 2 | 6 | — | 2 | 4 | 7 | 4 | 2 |
Temp °C | 25 | 20 | 29 | 29 | 21 | 24 | 21 | 21 | 21 | 21 | 22 | 28 | 25 | 20 | 21 | 20 | 19 | 19 | 19 |
Feels °C | 21 | 13 | 23 | 22 | 18 | 22 | 22 | 20 | 20 | 20 | 22 | 27 | 24 | 17 | 17 | 16 | 12 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 9 | WSW 13 | WSW 11 | WSW 10 | WSW 9 | WSW 9 | SW 4 | WSW 8 | WNW 10 | SW 5 | SW 5 | WNW 8 | W 9 | — | — | — | — | — |
| kJ | 36 | 6 | 32 | 44 | 37 | 28 | 15 | 7 | 6 | 20 | 23 | 13 | 13 | 194 | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | W 9 | WNW 7 | NW 7 | N 4 | W 6 | NW 6 | W 9 | WSW 8 | W 11 | SW 7 | WNW 10 | WNW 9 | WNW 8 | — | — | — | — | — | — |
| kJ | 24 | 5 | 2 | 1 | 1 | 2 | 2 | 7 | 10 | 2 | 18 | 16 | 23 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 16 | WNW 7 | W 7 | — | — | W 14 | W 12 | — | W 8 | — | — | — | — | — | — | — | — | — |
| kJ | — | 5 | 5 | 1 | — | — | 4 | 3 | — | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ENE 3 | ENE 4 | ENE 3 | E 3 | ESE 4 | S 5 | S 4 | — | SW 4 | SW 4 | — | — | W 5 | — | WSW 9 | WSW 10 | WSW 9 | WSW 10 | W 10 |
| kJ | 6 | 22 | 7 | 11 | 7 | 13 | 11 | — | 2 | 8 | — | — | 44 | — | 651 | 992 | 1579 | 1966 | 1631 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 155 | 264 | 144 | 82 | 458 | 436 | 231 | 237 | 237 | 256 | 89 | 252 | 319 | 182 | 364 | 128 | 353 | 371 | 347 |
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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