Surf Forecasts:
Les Dunes surf forecast from 12 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 2AM (local time) - 3.5ft (1.1m), 6s period, WNW swell with offshore winds.
- Most powerful swell: Friday 14 Aug, 5AM (local time) - 3.5ft (1.0m), 10s period, W swell with 200 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 11PM (local time) - 2ft (0.6m), 9s 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 Wednesday (Aug 12) at 11PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.1m and 6s. Another secondary swell of 0.4m and 3s 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 1.0m 10s and forecast to arrive on Friday (Aug 14) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Sunday (Aug 16) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 12th Aug) | 2ft (0.6m) 9s |
| Best Surf | 2AM (Wed 19th Aug) | 3.5ft (1.1m) 6s |
| Most Powerful | 5AM (Fri 14th Aug) | 3.5ft (1.0m) 10s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gonna level with you straight up – this forecast for Les Dunes is a tough one to read. We’ve got a 16-day window, but honestly, there’s nothing in here that screams, “Go get your wettie.”
The whole period is plagued by poor surf conditions for the most part. The water temp is sitting at 69°, which is pretty much what you'd expect for this time of year, no major anomaly to speak of.
We start off with a bit of a dud. From Wednesday the 12th through Sunday the 16th, it’s mostly cross-shore winds and choppy, weak dribble. Peak energy during that first stretch barely hits (301) on Saturday afternoon the 14th, but it’s a messy, 4ft cross-shore mess from the WNW with a short, weak 9-second period. Not worth paddling out for. There are a couple of clean-ish mornings (Friday the 14th, Saturday the 15th, and Sunday the 16th) with light cross-offshore northerlies, but the wave heights are tiny at 3ft. The swell energy is low (154, 108, 110), so it's barely a ripple. You could maybe get a fun little waist-high wave on those mornings, but it’s “surfable but very ordinary” at best. No standouts here.
The middle of the week dries right up. Monday the 17th through Tuesday the 18th sees the swell energy drop to pathetic levels (only 24-37) with onshores and tiny, short-period garbage.
A glimmer of hope arrives around Friday the 21st. Conditions finally turn offshore. We get a solid stretch from Friday morning the 21st right through Saturday afternoon the 22nd with clean, offshore winds from the NE and NNE. Swell sits around 3ft to 3ft from the WNW, with a moderate period of 8-10 seconds and energy values around 137-166. It’s not pumping, but it will be clean, lined up, and probably a lot more fun than anything else. This is your best bet. The offshore breeze will make it glassy, and the crowds here are listed as “sometimes,” so you might have a few buddies but nothing crazy. Friday morning the 21st and Saturday morning the 22nd are the pick.
After that brief window, the curse returns. Glassy conditions on Sunday the 23rd morning, but the swell drops to a dribbly 1ft.
Right at the very tail end, on Wednesday the 26th, we see the biggest energy spike of the whole forecast at (430). But don’t get excited. That’s a 4ft swell from the WNW with a 9-second period, and the wind is a fresh 19 mph cross-offshore. It’ll be big, powerful, and blown out. For reference, that size is too big for beginners at 4ft, but the real killer is the lumpy texture. It looks like it would be more of a drift-fest for kites than a clean paddle session.
So, to wrap it up: Don’t bother between now and Thursday the 20th. Your best shot is the offshore window Friday the 21st and Saturday the 22nd. After that, it’s back to grim. Keep an eye on the forecast though, this kind of blank run isn't totally normal, and things can always flip.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Fri night. Warm (max 30°C on Wed afternoon, min 17°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 16°C on Sun morning). Winds increasing (light winds from the N on Sat afternoon, fresh winds from the NW by Tue morning). | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | W 10 | W 9 | W 9 | W 10 | W 10 | WNW 10 | WNW 9 | WNW 6 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 5 | NW 7 | NW 4 | NW 5 | WNW 5 | WNW 5 | WNW 6 |
Wave Graph | ||||||||||||||||||||
71 | 61 | 87 | 122 | 125 | 154 | 193 | 68 | 108 | 149 | 100 | 110 | 117 | 44 | 37 | 22 | 62 | 20 | 30 | 87 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross | cross | off |
High Tide | 5:29PM4.52m | 5:56AM4.28m | 6:11PM4.66m | 6:35AM4.32m | 6:50PM4.66m | 7:12AM4.27m | 7:26PM4.52m | 7:46AM4.13m | 8:00PM4.27m | 8:17AM3.93m | 8:32PM3.95m | 8:47AM3.69m | 9:03PM3.61m | |||||||
Low Tide | 11:27PM-0.14m | 11:42AM-0.07m | 00:11AM-0.26m | 12:25PM-0.16m | 00:53AM-0.25m | 1:07PM-0.13m | 1:33AM-0.11m | 1:48PM0.03m | 2:13AM0.14m | 2:29PM0.29m | 2:53AM0.46m | 3:11PM0.62m | 3:34AM0.82m | |||||||
— | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | |
— | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:17 | — | — | 9:15 | — | — | 9:14 | — | — | 9:13 | |
mm | — | — | — | — | — | — | 1 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 28 | 28 | 29 | 27 | 25 | 28 | 23 | 18 | 22 | 22 | 20 | 22 | 21 | 21 | 23 | 20 | 20 | 20 | 20 |
Feels °C | 27 | 27 | 26 | 26 | 24 | 24 | 26 | 20 | 17 | 20 | 19 | 18 | 19 | 17 | 18 | 18 | 16 | 20 | 15 | 17 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 9 | W 9 | W 10 | W 10 | WNW 10 | W 9 | W 9 | WNW 8 | — | — | WNW 8 | — | WNW 5 | NW 7 | W 11 | W 10 | W 8 | — | WNW 6 |
71 | 61 | 87 | 122 | 125 | 154 | 108 | 40 | 108 | — | — | 110 | — | 44 | 37 | 2 | 2 | 5 | — | 87 | |
Swell 2 Height (m) Direction Period (s) | W 6 | W 5 | — | W 12 | — | — | — | W 9 | — | — | — | — | — | — | — | — | — | — | — | — |
1 | 1 | — | 12 | — | — | — | 59 | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NW 3 | NW 4 | NW 3 | NW 4 | NNE 2 | WNW 9 | WNW 6 | — | WNW 8 | WNW 8 | — | WNW 8 | N 4 | — | NW 4 | NW 5 | WNW 5 | WNW 5 | — |
— | 4 | 2 | 5 | 10 | 1 | 193 | 68 | — | 149 | 100 | — | 117 | 10 | — | 22 | 62 | 20 | 30 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 293 | 0 | 9 | 22 | 9 | 0 | 22 | 9 | 9 | 158 | 9 | 0 | 158 | 261 | 122 | 355 | 364 | 172 | 293 | 3 |
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.











