Surf Forecasts:
Les Dunes surf forecast from 7 Sep 2026:
- Best quality surf: Monday 7 Sep, 11PM (local time) - 4.5ft (1.4m), 12s period, W swell with cross-onshore winds.
- Most powerful swell: Tuesday 8 Sep, 11PM (local time) - 8ft (2.4m), 9s period, WNW swell with 860 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 11PM (local time) - 4.5ft (1.4m), 12s 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 11PM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.6m and 5s. 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 2.4m 9s 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 0.6m 4s period and expected on Monday (Sep 14) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 7th Sep) | 4.5ft (1.4m) 12s |
| Best Surf | 11PM (Mon 7th Sep) | 4.5ft (1.4m) 12s |
| Most Powerful | 11PM (Tue 8th Sep) | 8ft (2.4m) 9s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for Les Dunes over the next few weeks. I’ll be straight with you – it’s been a bit of a slow start, but there’s a glimmer of hope if you’re patient.
The first week is pretty much a write-off. We’ve got a pulse of swell on Tuesday the 8th, with waves around 5 ft from the WSW, but the wind is howling from the SW at 19 mph, making a mess of things. The combined energy is moderate at 801, but it’s just not coming together. After that, it’s a real struggle. Wednesday morning the 9th sees a cleaner 4 ft swell from the W under a light northerly, but the forecast says it’s too big for this spot – that’s a shame. The rest of the week is a mix of tiny waves and dodgy winds. Thursday the 10th morning has a tiny 2 ft WNW swell with light ESE breeze, but it’s barely surfable. Friday the 11th morning is glassy with a 1 ft W swell, but again, it’s just no good. This pattern of small, messy surf continues right through to the end of the second week. The combined energy drops right down to two-digit numbers, which is weak stuff. There’s a long gap here with no real recommendations.
The standout window finally arrives on Monday the 21st of September. The morning looks promising: a 3 ft W swell at 11 seconds, combined energy of 248 (moderate), and the wind is a light northerly keeping it clean. The forecast says “expect good surf conditions,” and that’s the best we’ve seen. The swell direction is WSW, right in the optimum for Les Dunes, and the period is long enough to give the waves some shape. For a beginner-friendly break, that 3 ft is a good size. Crowds are possible here at times, so you might have some company. This is the clear pick of the whole run.
So, to sum it up: the first ten days or so are a bust. Grit your teeth through it, and you’ll be rewarded on the 21st. That’s your day.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Mon night, min 15°C on Tue night). Winds decreasing (strong winds from the NW on Tue afternoon, light winds from the ESE by Thu morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sat afternoon, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 12 | WSW 11 | W 7 | WNW 9 | W 9 | NW 10 | WNW 10 | WNW 9 | W 8 | W 8 | W 8 | W 10 | W 8 | W 8 | W 8 | W 10 | W 10 | WNW 12 | WNW 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 472 | 469 | 442 | 528 | 269 | 207 | 86 | 42 | 29 | 19 | 18 | 88 | 64 | 57 | 45 | 100 | 122 | 104 | 169 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-off | glassy | cross | cross-off | glassy | cross | cross | cross-on | cross | off |
High Tide | 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 | 6:39AM4.33m | 6:52PM4.43m | |||||||
Low Tide | 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 | 12:40PM-0.13m | 1:02AM-0.06m | ||||||
 |  |  |  | | | | | | | | | | | |  | | | | |
 | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — | 7:39 | — | — | 7:41 | — | — |
 | 8:36 | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 19 | 17 | 18 | 18 | 16 | 19 | 18 | 17 | 19 | 18 | 19 | 21 | 19 | 19 | 20 | 19 |
Feels °C | 21 | 17 | 15 | 12 | 13 | 13 | 13 | 14 | 16 | 15 | 17 | 17 | 15 | 19 | 19 | 17 | 18 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | W 12 | W 11 | — | WNW 9 | W 9 | W 9 | W 8 | WNW 9 | W 8 | W 8 | W 8 | W 10 | W 8 | W 8 | W 8 | W 10 | W 10 | WNW 12 | WNW 10 |
| kJ | 472 | 332 | — | 528 | 269 | 194 | 69 | 42 | 29 | 19 | 18 | 88 | 64 | 57 | 41 | 100 | 122 | 104 | 169 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | WNW 11 | — | WNW 10 | W 8 | NW 9 | WNW 8 | W 10 | — | — | W 18 | W 16 | WNW 14 | — | W 9 | — |
| kJ | — | — | — | — | 12 | — | 86 | 34 | 20 | 7 | 18 | — | — | 6 | 45 | 63 | — | 28 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 13 | W 12 | W 11 | NW 8 | — | — | W 8 | W 12 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 3 | 3 | 9 | 3 | — | — | 1 | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WSW 11 | W 7 | — | — | NW 10 | — | — | — | NW 3 | NW 3 | WNW 3 | NW 4 | — | — | NW 3 | — | WNW 3 | WNW 4 |
| kJ | — | 469 | 442 | — | — | 207 | — | — | — | 2 | 1 | 7 | 16 | — | — | 1 | — | 2 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 22 | 128 | 328 | 9 | 3 | 22 | 0 | 0 | 237 | 151 | 3 | 22 | 9 | 0 | 22 | 22 | 68 | 226 | 0 |
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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