Surf Forecasts:
Les Dunes surf forecast from 6 Sep 2026:
- Best quality surf: Monday 7 Sep, 8PM (local time) - 4.5ft (1.4m), 13s period, W swell with cross-onshore winds.
- Most powerful swell: Tuesday 8 Sep, 11PM (local time) - 7.5ft (2.3m), 8s period, WNW swell with 755 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 8PM (local time) - 4.5ft (1.4m), 13s 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 07) at 8PM. The primary swell is predicted to be 1.4m and 13s 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 2.3m 8s and forecast to arrive on Tuesday (Sep 08) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Sep 13) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 7th Sep) | 4.5ft (1.4m) 13s |
| Best Surf | 8PM (Mon 7th Sep) | 4.5ft (1.4m) 13s |
| Most Powerful | 11PM (Tue 8th Sep) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Right. Ol’ Rusty here. Let's have a look at what's on the table for the Dunes area over the next couple of weeks. I gotta be straight with you right from the start – it’s a pretty grim picture for anyone wanting to get a decent wave. The whole 16-day window is a tough read.
We start off Sunday the 6th with tiny 2ft swell out of the west, and a sloppy onshore wind. Not worth getting wet. That sets the tone. Monday the 7th through to the end of the week is just more of the same: messy onshore or cross-shore winds, small, weak swell. The combined wave energy is all over the place, but mostly in the moderate range, hitting a peak of 782 on Monday afternoon, but that came with a 5ft west swell and a strong onshore wind, making it a complete write-off. For the most part, the swell is too small and the wind is in the wrong quarter. There's a real run of days here where the setup looks more interesting for kite surfing than paddle surfing, especially with that strong cross-shore wind on Tuesday the 8th and Wednesday the 9th.
There’s a brief glimmer on Saturday morning the 12th – a clean 2ft swell from the west, with a light offshore breeze (ENE). But the period is short at 8 seconds, and the energy is weak at 58. It’s surfable for a beginner at Les Dunes, but it's hardly a standout. The next clean window doesn’t appear until Tuesday morning the 15th of September. We get a clean 3ft groundswell from the west with a 12-second period, and a light offshore wind. The combined energy is moderate at 180. This is probably the best you’ll see for the whole forecast, but the swell is small and conditions are described as "very ordinary" – meaning it's ridable but nothing to write home about. After that, it's right back into the slop with onshore winds and chop.
The only other cleanish moment is Saturday morning the 19th with a 2ft WNW swell and a cross-offshore wind, but it’s still small and weak (energy 112). Then on Sunday the 20th, we get a glassy morning with no wind at all (0 mph) and a weak 2ft west swell (energy 86). Again, it’s a small, clean wave, but barely a ripple.
For the whole 16 days, there’s no proper swell, no standouts, and the wind is a constant problem. It’s one of those stretches where you’d be better off checking the forecast again in a few days. The water temp is a touch warmer than normal for this time of year at 70°F.
Alright, I'm signing off.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 22°C on Sun night, min 15°C on Wed morning). Winds increasing (light winds from the WSW on Mon morning, strong winds from the NW by Tue afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sat afternoon, min 16°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 9 | WSW 15 | W 13 | W 12 | W 11 | W 6 | WNW 9 | W 9 | W 9 | W 8 | WNW 9 | W 8 | W 8 | WNW 10 | WNW 9 | WNW 8 | W 8 | W 8 | W 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 106 | 360 | 683 | 472 | 457 | 293 | 493 | 269 | 194 | 64 | 47 | 31 | 18 | 102 | 132 | 94 | 58 | 48 | 90 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | on | cross | cross-off | cross | cross | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross | on | cross | cross-off |
High Tide | 2:26AM3.31m | 2:51PM3.63m | 3:29AM3.62m | 3:47PM4.00m | 4:18AM3.93m | 4:33PM4.32m | 4:59AM4.17m | 5:13PM4.54m | 5:36AM4.32m | 5:49PM4.63m | 6:09AM4.37m | 6:22PM4.58m | |||||||
Low Tide | 7:51AM1.11m | 8:35PM0.80m | 8:59AM0.79m | 9:35PM0.44m | 9:53AM0.43m | 10:24PM0.11m | 10:40AM0.12m | 11:07PM-0.13m | 11:22AM-0.09m | 11:47PM-0.24m | 12:02PM-0.18m | 00:25AM-0.21m | |||||||
 | | |  | |  | | |  | |  | | | | | | | | | |
 | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — | 7:39 | — | — |
 | 8:37 | — | 8:36 | — | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 21 | 20 | 20 | 20 | 19 | 17 | 18 | 18 | 17 | 18 | 17 | 19 | 19 | 19 | 19 | 20 | 19 |
Feels °C | 22 | 21 | 21 | 20 | 16 | 16 | 14 | 15 | 13 | 14 | 16 | 16 | 15 | 18 | 18 | 19 | 20 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | WSW 18 | WSW 15 | W 13 | W 12 | W 11 | — | WNW 9 | W 9 | W 9 | WNW 9 | WNW 9 | W 8 | W 8 | WNW 10 | WNW 9 | WNW 8 | W 8 | W 8 | W 10 |
| kJ | 31 | 360 | 683 | 472 | 332 | — | 493 | 269 | 194 | 64 | 47 | 31 | 18 | 102 | 132 | 94 | 58 | 48 | 90 |
Swell 2 Height (m) Direction Period (s) | WSW 18 | W 9 | — | — | — | — | — | — | W 9 | W 8 | W 8 | WNW 9 | WNW 8 | W 7 | — | — | W 17 | W 16 | W 16 |
| kJ | 62 | 97 | — | — | — | — | — | — | 122 | 61 | 33 | 31 | 13 | 10 | — | — | 6 | 19 | 81 |
Swell 3 Height (m) Direction Period (s) | — | W 9 | — | — | — | — | — | — | — | — | W 13 | W 12 | W 11 | — | — | — | — | — | W 13 |
| kJ | — | 24 | — | — | — | — | — | — | — | — | 3 | 3 | 9 | — | — | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | W 9 | — | W 9 | — | W 11 | W 6 | — | — | — | — | — | — | WNW 3 | — | — | — | — | — | NW 3 |
| kJ | 106 | — | 99 | — | 457 | 293 | — | — | — | — | — | — | 2 | — | — | — | — | — | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 172 | 22 | 68 | 22 | 232 | 353 | 9 | 9 | 22 | 0 | 33 | 355 | 22 | 22 | 237 | 9 | 22 | 226 | 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.
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