Surf Forecasts:
Les Dunes surf forecast from 18 Jul 2026:
- Most powerful swell: Wednesday 22 Jul, 8PM (local time) - 2.5ft (0.8m), 4s period, NW swell with 20 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 0.8m 4s and forecast to arrive on Wednesday (Jul 22) 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 1.0m 4s period and expected on Monday (Jul 20) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Wed 22nd Jul) | 2.5ft (0.8m) 4s |
Table - best surf conditions forecast for Les Dunes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be honest about this stretch. We’re looking at a pretty flat run for the next couple of weeks, so don’t get your hopes up too high. The only break on the radar is Les Dunes, and it’s a beginner-friendly spot that’s fairly consistent, but it’s going to be a waiting game.
Right now, and for the first several days through to the end of July, the surf is just not there. We’re talking about tiny, weak waves with poor conditions. The combined swell energy stays low, sitting between 6 and 62 (weak energy) for most of that time. You’ll see some days with clean offshore winds, like Sunday the 20th and Monday the 21st of July, with a light NE breeze and glassy conditions, but the swell is a measly 0.3 ft to 0.7 ft. It’s basically a lake. There’s nothing to ride.
The pattern shifts a little around Monday the 27th of July. The swell starts to build. By Monday morning, we’re seeing 3 ft swell from the WNW with a combined energy of 137 (moderate wave energy). That’s still not great, and the wind is cross-shore, making it lumpy. Tuesday the 28th of July sees the biggest swell of the period, with 5 ft from the WNW in the morning, combined energy hitting 270 (moderate wave energy). The period is 8 seconds, so it’s a short-period wind swell, not a clean groundswell. The wind is cross-shore, so it’s not going to be clean.
If you’re itching for a paddle, the best chance comes on Wednesday the 29th of July. Wednesday morning at Les Dunes, we’ve got a 3 ft swell from the WNW with a period of 10 seconds, and combined energy of 167 (moderate wave energy). The wind is light NNE at 6 mph, which is a cross-offshore breeze, leaving it clean. It’s surfable, but it’s very ordinary. The crowds are possible here, so you might have some company. The water temp is about average for the time of year.
After that, it drops off again. The rest of the first week of August looks small and weak. Thursday the 30th of July morning has a little 3 ft swell with a gentle offshore wind from the NE, making it clean, but the energy is low at 98. It’s another small, ordinary day. The whole run from the 31st of July onward is just poor, small surf with messy winds.
So, the standout is Wednesday the 29th of July morning. It’s not pumping, but it’s the cleanest, most rideable wave in the whole 16-day window. For a beginner, that’s your window. The rest of the time, save your wax and wait for the next forecast.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Sun afternoon, min 16°C on Mon morning). Winds increasing (calm on Sat morning, fresh winds from the NNE by Sun night). | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Tue afternoon, min 17°C on Tue morning). Winds decreasing (fresh winds from the NNW on Wed night, light winds from the NNE by Thu afternoon). | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
AM | 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 8 | W 8 | NW 4 | NW 5 | WNW 8 | NNW 5 | W 9 | W 12 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | NW 5 | NW 5 | W 9 | W 9 | W 9 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 5 | 7 | 6 | 6 | 10 | 2 | 3 | 10 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 10 | 6 | 6 | 1 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | off | off | off | off | off | off | off | off | off | off | off | cross-off | off | off | cross-off | off | cross | cross-on | cross-off |
High Tide | 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 | 1:01PM3.09m | 1:41AM3.03m | 2:15PM3.13m | 2:51AM3.09m | |||||||
Low Tide | 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 | 6:07AM1.29m | 6:41PM1.36m | 7:12AM1.40m | 7:50PM1.37m | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — |
 | — | — | 9:54 | — | — | 9:53 | — | — | 9:52 | — | — | 9:52 | — | — | 9:51 | — | — | 9:50 | — | — | 9:49 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 25 | 23 | 23 | 29 | 29 | 21 | 29 | 28 | 21 | 29 | 29 | 24 | 29 | 27 | 24 | 28 | 29 | 24 | 26 | 26 |
Feels °C | 22 | 21 | 18 | 17 | 23 | 22 | 14 | 21 | 20 | 14 | 23 | 23 | 20 | 24 | 21 | 21 | 26 | 25 | 20 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | WNW 4 | W 8 | NW 4 | NW 5 | WNW 8 | NNW 5 | W 9 | W 9 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | NW 5 | W 9 | NW 4 | W 9 | SE 4 | W 8 |
| kJ | 1 | 5 | 7 | 6 | 6 | 10 | 2 | 2 | 10 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 6 | 5 | 6 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | W 8 | — | W 8 | W 8 | NW 5 | W 7 | NW 7 | W 12 | W 8 | W 6 | — | — | NW 4 | — | — | N 3 | — | W 9 | NW 4 | W 9 | W 8 |
| kJ | 5 | — | 5 | 5 | 1 | 4 | 2 | 3 | 1 | 1 | — | — | 1 | — | — | 1 | — | 6 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | NW 8 | — | W 10 | W 7 | W 7 | — | W 8 | W 8 | — | SE 4 | — | — | W 9 | — | NW 7 | N 7 | — | — |
| kJ | — | — | — | 3 | — | 2 | 1 | 1 | — | 1 | 1 | — | 1 | — | — | 6 | — | 2 | 1 | — | — |
Wind waves Height (m) Direction Period (s) | — | NW 3 | NNE 3 | NE 4 | NNE 4 | NE 4 | NE 4 | NNE 4 | NNE 4 | NE 4 | NNE 3 | NNE 4 | NE 3 | NNW 3 | N 4 | ENE 3 | NW 5 | NE 2 | SE 4 | — | NNW 3 |
| kJ | — | 4 | 1 | 13 | 8 | 35 | 28 | 9 | 14 | 15 | 7 | 13 | 3 | 6 | 22 | 2 | 10 | 1 | 3 | — | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 877 | 870 | 779 | 274 | 540 | 231 | 231 | 355 | 264 | 264 | 355 | 264 | 338 | 355 | 172 | 237 | 388 | 264 | 441 | 807 | 799 |
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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