Surf Forecasts:
Belle Ile - Les Donnants surf forecast from 22 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 11AM (local time) - 2.5ft (0.8m), 9s period, WNW swell with offshore winds.
- Most powerful swell: Monday 27 Jul, 8PM (local time) - 4.5ft (1.4m), 9s period, WNW swell with 311 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 11AM (local time) - 2.5ft (0.8m), 9s period with WNW swell.
Best Forecast Surf Conditions for Belle Ile - Les Donnants this week:
The surf forecast for Belle Ile - Les Donnants over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 11AM. The primary swell is predicted to be 0.8m and 9s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Belle Ile - Les Donnants in the next 16 days are 1.4m 9s and forecast to arrive on Monday (Jul 27) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Saturday (Jul 25) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 28th Jul) | 2.5ft (0.8m) 9s |
| Best Surf | 11AM (Tue 28th Jul) | 2.5ft (0.8m) 9s |
| Most Powerful | 8PM (Mon 27th Jul) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for Belle Ile - Les Donnants over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for Belle Ile - Les Donnants.
The outlook is a tough one. Right through the next 16 days, the waves are just not cooperating. There are no real standouts, and the swell is small and weak for the vast majority of the period. The water temperature is about average for this time of year, so no surprises there.
The first few days are a write-off. From Wednesday the 22nd right through the weekend of the 26th, the swell is tiny, mostly around 1.0ft to 2ft with periods under 10 seconds. The combined energy is weak, under 100 (20-125). The wind is mostly onshore or cross, making for poor, messy conditions. It’s a full-blown flat spell with nothing to get excited about.
Looking into the week of the 27th, there’s a slight uptick. On Monday morning the 27th, the swell picks up to 4ft from the WNW with a 9-second period, and combined energy climbs to 222 (moderate). The wind is light and cross, so it’s not terrible. But it’s still only a marginal forecast. By Tuesday morning the 28th, the wind is offshore from the east at 12 mph, which is clean, but the swell has dropped back to 3ft from the WNW, with energy back down to 96 (weak). You’ll find some weak, ordinary waves, but it’s not worth a special trip.
The following weekend and into August is more of the same. On Sunday the 2nd of August, the morning is glassy with NE wind at 0 mph, and the swell is 3ft from the WNW with a 10-second period. Combined energy is 168 (moderate). It’s the cleanest morning of the entire period, but the waves are still ordinary. The very next morning, Monday the 3rd of August, is also glassy from the east at 3 mph, with a 4ft, 8-second swell from the west (energy 149). That’s about as good as it gets, but it’s still just “surfable” at best. After that, the wind goes onshore again and the swell drops back to small, weak junk.
Honestly, there’s no true standout window here. The best bet is to keep an eye on the glassy mornings of the 2nd and 3rd of August, but don’t expect much. It’s a quiet stretch; sometimes you just have to wait for the next system.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Thu afternoon, min 17°C on Wed morning). Winds decreasing (fresh winds from the NNE on Tue night, calm by Wed afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Fri night, min 15°C on Mon morning). Winds decreasing (strong winds from the NW on Sat night, light winds from the NNW by Mon morning). | ||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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 10 | WNW 10 | WNW 10 | W 9 | W 9 | W 9 | W 9 | W 9 | SE 5 | WNW 4 | N 4 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 9 | WNW 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 19 | 19 | 18 | 16 | 14 | 14 | 6 | 6 | 11 | 7 | 15 | 186 | 127 | 95 | 114 | 140 | 222 | 243 | 190 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | on | cross-off | off | cross-on | off | off | on | cross-off | cross-on | on | cross-on | on | on | cross | cross | on | cross-off |
High Tide | 10:56PM3.29m | 11:29AM3.12m | 00:00AM3.04m | 12:43PM3.01m | 1:25AM2.93m | 2:05PM3.03m | 2:44AM2.98m | 3:11PM3.16m | 3:41AM3.12m | 4:00PM3.35m | 4:24AM3.30m | 4:40PM3.56m | 5:00AM3.47m | ||||||
Low Tide | 5:21AM1.10m | 5:49PM1.23m | 6:20AM1.30m | 6:56PM1.36m | 7:26AM1.39m | 8:05PM1.36m | 8:31AM1.34m | 9:07PM1.24m | 9:28AM1.20m | 10:00PM1.05m | 10:16AM1.01m | 10:44PM0.84m | |||||||
 | | |  | | | | | | | | |  |  | | | | | | |
 | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — |
 | 10:00 | — | — | 9:59 | — | — | 9:58 | — | — | 9:57 | — | — | 9:55 | — | — | 9:54 | — | — | 9:52 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 19 | 25 | 25 | 20 | 27 | 26 | 20 | 26 | 25 | 21 | 22 | 21 | 19 | 19 | 18 | 16 | 19 | 23 |
Feels °C | 19 | 15 | 21 | 19 | 16 | 25 | 21 | 15 | 22 | 19 | 18 | 16 | 12 | 17 | 17 | 12 | 15 | 17 | 20 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | E 3 | NW 4 | W 9 | SE 4 | NW 3 | W 9 | SE 5 | WNW 4 | W 8 | SW 6 | W 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | — | WNW 9 |
| kJ | 19 | 19 | 2 | 4 | 14 | 2 | 2 | 6 | 11 | 7 | 5 | 1 | 8 | 9 | 11 | 67 | 222 | — | 190 |
Swell 2 Height (m) Direction Period (s) | WNW 6 | NW 5 | WNW 10 | W 9 | WNW 7 | W 9 | W 9 | NW 5 | W 8 | W 8 | NW 10 | — | S 6 | NW 10 | — | — | — | — | — |
| kJ | 3 | 1 | 18 | 16 | 4 | 14 | 6 | 1 | 6 | 5 | 4 | — | 1 | 4 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | NW 6 | WNW 6 | — | — | — | — | W 8 | — | S 6 | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | 3 | — | — | — | — | 6 | — | 1 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNE 4 | ENE 4 | — | NNE 3 | E 4 | — | ENE 3 | ESE 4 | — | NNE 4 | N 4 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | NNE 3 | WNW 9 | NNE 3 |
| kJ | 34 | 16 | — | 8 | 10 | — | 3 | 26 | — | 25 | 15 | 186 | 127 | 95 | 114 | 140 | 2 | 243 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 377 | 139 | 436 | 347 | 434 | 356 | 356 | 356 | 742 | 258 | 254 | 754 | 73 | 90 | 158 | 43 | 28 | 87 | 28 |
Best forecast wave conditions in Morbihan - Brittany | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
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Information about the Belle Ile - Les Donnants Surf forecast
The above surf forecast table for Belle Ile - Les Donnants provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Belle Ile - Les Donnants can be found by selecting the local surf guide option on the grey menu. Our Belle Ile - Les Donnants 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 (Belle Ile - Les Donnants) 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 Belle Ile - Les Donnants 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.
Belle Ile - Les Donnants is 48 km (30 miles) from Lorient. If you plan a holiday in Morbihan - Brittany, look for hotels and other accommodation in Lorient. Lorient has rooms for a wide range of budgets as well as car hire and transport links.
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