Surf Forecasts:
Les Dunes surf forecast from 17 Jul 2026:
- Most powerful swell: Thursday 23 Jul, 8PM (local time) - 3.5ft (1.0m), 4s period, NW swell with 35 kJ wave energy.
Best Forecast Surf Conditions for Les Dunes this week:
The most powerful waves expected at Les Dunes in the next 16 days are 1.0m 4s and forecast to arrive on Thursday (Jul 23) at 8PM. 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 Thursday (Jul 23) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Thu 23rd Jul) | 3.5ft (1.0m) 4s |
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 coming up.
Straight up, it’s a quiet spell for the next week and a half. From Friday the 17th right through to Monday the 27th of July, there’s nothing worth your time. The swell is tiny, the energy is weak, and conditions are mostly messy. You’re looking at a solid 10-day gap with no real surf to speak of. The only break on the radar is Les Dunes, but it’s just not showing any love.
Things start to stir on the morning of Monday the 27th of July. We get a glassy morning with a light 3 ft swell from the northwest, period around 6 seconds. The combined energy is still low at 71 (weak), but the water is clean – no wind ripples. It’s surfable, but really ordinary. Not a standout, just a chance to get wet if you’re desperate.
The energy starts to build from Wednesday the 29th, with the swell picking up to 2 ft and the combined energy hitting 116 (moderate). But the wind is fresh cross-shore and lumpy, so it’s messy. Then Thursday the 30th of July morning sees a cleaner window: 3 ft from the WNW, period 9 seconds, and clean cross-off wind. The combined energy is 143 (moderate), and the surf is still just ordinary. Not great, but the best we’ve seen.
Now, the real standout – and the only one worth marking on your calendar – is Friday the 31st of July, morning session. The swell jumps to 4 ft from the west, period 8 seconds, with clean cross-off wind from the NW. The combined energy hits 190 (moderate). The catch is, the forecast says it might be too big for this break – it’s a beginner-friendly spot, so if you’re experienced, you might get some fun ones, but beginners should stay out. The wind is gentle offshore, so the surface will be clean. Crowds are possible here, so don’t expect it empty.
After that, Saturday the 1st of August morning drops back to 3 ft, period 7 seconds, with clean cross-off wind, but energy is back down to 94 (weak). Just ordinary again.
So the bottom line: the best bet in this 16-day window is the morning of Friday the 31st of July at Les Dunes. It’s the only time the swell gets above 3 ft with clean wind. The rest is a waiting game.
Rusty out.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 32°C on Sun afternoon, min 19°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 32°C on Sun night, min 17°C on Mon morning). Winds decreasing (fresh winds from the NE on Sun night, light winds from the ENE by Wed morning). | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||
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 4 | W 5 | W 4 | W 4 | W 8 | W 8 | NW 4 | NW 5 | WNW 8 | WNW 7 | W 13 | W 9 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 18 | 31 | 14 | 7 | 5 | 5 | 15 | 6 | 6 | 5 | 3 | 6 | 10 | 9 | 9 | 8 | 8 | 8 | 7 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | cross-off | cross | off | off | off | off | off | cross-off | off | off | cross-off | off | off | cross | cross-off |
High Tide | 7:39AM4.15m | 7:55PM4.47m | 8:23AM3.99m | 8:39PM4.24m | 9:06AM3.78m | 9:23PM3.95m | 9:50AM3.56m | 10:09PM3.63m | 10:40AM3.34m | 11:04PM3.33m | 11:43AM3.17m | 00:18AM3.11m | |||||||
Low Tide | 1:16AM-0.18m | 1:31PM-0.00m | 2:02AM-0.05m | 2:17PM0.15m | 2:47AM0.18m | 3:02PM0.39m | 3:32AM0.47m | 3:49PM0.67m | 4:19AM0.78m | 4:40PM0.96m | 5:10AM1.07m | 5:37PM1.21m | |||||||
 |  | |  | |  | | | | | | | | | | | | |  | |
 | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — |
 | 9:55 | — | — | 9:54 | — | — | 9:54 | — | — | 9:53 | — | — | 9:52 | — | — | 9:52 | — | — | 9:51 |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 22 | 22 | 24 | 27 | 25 | 26 | 32 | 32 | 22 | 29 | 29 | 22 | 28 | 27 | 23 | 25 | 24 |
Feels °C | 22 | 21 | 21 | 21 | 22 | 22 | 20 | 22 | 28 | 26 | 15 | 22 | 22 | 18 | 24 | 22 | 21 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 8 | W 8 | NNW 4 | W 8 | NW 4 | NW 5 | WNW 8 | WNW 7 | W 9 | W 9 | W 11 | W 11 | W 11 | NW 4 | W 10 | W 10 | W 10 |
| kJ | 13 | 6 | 6 | 5 | 1 | 5 | 15 | 6 | 6 | 5 | 2 | 6 | 10 | 9 | 9 | 4 | 8 | 8 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 8 | — | W 8 | W 8 | NW 5 | W 10 | W 7 | W 12 | W 8 | NW 6 | NW 5 | W 10 | SE 4 | — | W 10 |
| kJ | — | — | — | — | 5 | — | 5 | 5 | 1 | 2 | 1 | 3 | 1 | 1 | 1 | 8 | 1 | — | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 9 | — | — | W 13 | — | W 8 | W 8 | — | — | NW 4 | — | — |
| kJ | — | — | — | — | — | — | — | 3 | — | — | 3 | — | 1 | 1 | — | — | 1 | — | — |
Wind waves Height (m) Direction Period (s) | WNW 4 | W 5 | W 4 | W 4 | — | NW 3 | NE 3 | ENE 3 | NE 2 | NNE 4 | NE 4 | NNE 3 | NNE 4 | NE 4 | NNE 3 | NE 3 | NE 3 | NW 3 | NNW 4 |
| kJ | 18 | 31 | 14 | 7 | — | 5 | 1 | 3 | 1 | 21 | 12 | 3 | 20 | 10 | 1 | 6 | 2 | 4 | 34 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 136 | 749 | 749 | 1176 | 877 | 870 | 815 | 237 | 466 | 231 | 264 | 355 | 264 | 264 | 355 | 231 | 264 | 388 | 369 |
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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