Surf Forecasts:
Belle Ile - Les Donnants surf forecast from 27 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 11AM (local time) - 2.5ft (0.8m), 10s period, WNW swell with offshore winds.
- Most powerful swell: Monday 27 Jul, 8PM (local time) - 4.5ft (1.3m), 10s period, WNW swell with 332 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 11AM (local time) - 2.5ft (0.8m), 10s 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 10s 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 1.3m 10s 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 1.1m 4s period and expected on Saturday (Aug 01) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 28th Jul) | 2.5ft (0.8m) 10s |
| Best Surf | 11AM (Tue 28th Jul) | 2.5ft (0.8m) 10s |
| Most Powerful | 8PM (Mon 27th Jul) | 4.5ft (1.3m) 10s |
Table - best surf conditions forecast for Belle Ile - Les Donnants over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s talk about Belle Ile - Les Donnants. A river break exposed to the SW, so it needs a proper swell from that direction. The next run is looking rough for a while. The water temp is about normal for the season.
There’s a long dry spell. From Monday the 27th through Saturday the 8th of August, conditions are poor. Swell is tiny, usually under 3ft, and the wind is mostly onshore or cross-on, making it choppy and messy. The combined wave energy is weak, often under 100 (like 54 to 99), so there’s no real power. A couple of mornings like Tuesday the 28th and Saturday the 8th have offshore wind, but waves are only 2ft to 3ft, so not worth it. Honestly, this looks more interesting for kite surfing than paddle surfing right now.
The standout is Sunday the 9th of August. That morning delivers 7ft swell from the W, 8-second period, and wave energy of 624 (strong). The wind is offshore from the ESE, light and clean. That’s the one to go for, but it’s only good in the morning before the wind swings onshore. The size makes it for experienced surfers only. The short period might keep the river break a bit straight, but the offshore will clean it up nicely. A solid but distant option.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 16°C on Mon morning). Winds decreasing (strong winds from the WNW on Sun night, light winds from the NW by Wed morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Fri night, min 14°C on Fri night). Winds decreasing (fresh winds from the WNW on Fri afternoon, light winds from the WNW by Sat afternoon). | ||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | ||||||||||||||
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 9 | WNW 9 | WNW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | NW 5 | WNW 7 | WNW 8 | WNW 8 | WNW 7 | NW 7 | WNW 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 336 | 254 | 232 | 218 | 107 | 78 | 73 | 44 | 42 | 40 | 26 | 51 | 37 | 86 | 99 | 133 | 48 | 41 | 45 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-off | off | on | on | cross-on | on | cross-on | cross-on | on | cross | cross | on | cross-off | cross-off | cross-on | cross-off |
High Tide | 4:24AM3.30m | 4:40PM3.56m | 5:00AM3.47m | 5:14PM3.76m | 5:33AM3.63m | 5:47PM3.93m | 6:04AM3.75m | 6:18PM4.06m | 6:35AM3.84m | 6:49PM4.14m | 7:06AM3.88m | 7:20PM4.15m | |||||||
Low Tide | 10:00PM1.05m | 10:16AM1.01m | 10:44PM0.84m | 10:58AM0.80m | 11:24PM0.65m | 11:35AM0.62m | 00:01AM0.49m | 12:11PM0.48m | 00:36AM0.38m | 12:45PM0.39m | 1:10AM0.32m | 1:18PM0.37m | 1:43AM0.33m | ||||||
 | | |  | | | | | | | |  |  | | | | | | | |
 | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — |
 | 9:54 | — | — | 9:52 | — | — | 9:52 | — | — | 9:51 | — | — | 9:50 | — | — | 9:47 | — | — | 9:46 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 17 | 19 | 21 | 19 | 27 | 26 | 22 | 21 | 19 | 17 | 19 | 20 | 17 | 19 | 21 | 17 | 21 | 24 |
Feels °C | 13 | 16 | 16 | 20 | 15 | 25 | 23 | 21 | 20 | 17 | 17 | 18 | 15 | 14 | 13 | 14 | 13 | 16 | 18 |
Swell 1 Height (m) Direction Period (s) | — | WNW 9 | SSW 5 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 5 | W 10 | WNW 8 | WNW 7 | — | WNW 8 | WNW 7 | W 10 | WNW 6 |
| kJ | — | 254 | 2 | 218 | 107 | 78 | 73 | 44 | 42 | 40 | 11 | 17 | 36 | 86 | — | 133 | 48 | 8 | 45 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 5 | — | ESE 3 | — | W 11 | W 11 | WNW 10 | WNW 8 | W 10 | W 10 | — | — | W 12 | W 11 | E 3 | W 10 |
| kJ | — | — | — | 17 | — | 2 | — | 10 | 9 | 20 | 26 | 8 | 8 | — | — | 3 | 2 | 1 | 17 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | WNW 10 | WSW 4 | — | — | — | W 12 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 19 | 2 | — | — | — | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 9 | — | WNW 9 | NE 3 | E 4 | — | — | — | — | WNW 4 | — | WNW 8 | NW 5 | NNE 3 | WNW 8 | NNE 4 | NE 4 | NW 7 | NE 5 |
| kJ | 336 | — | 232 | 2 | 10 | — | — | — | — | 20 | — | 51 | 37 | 1 | 99 | 17 | 17 | 41 | 54 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 36 | 36 | 158 | 28 | 0 | 101 | 90 | 90 | 343 | 90 | 90 | 93 | 47 | 32 | 348 | 43 | 90 | 90 | 258 |
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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