Surf Forecasts:
Belle Ile - Les Donnants surf forecast from 9 Oct 2026:
- Best quality surf: Sunday 11 Oct, 2AM (local time) - 4.5ft (1.4m), 10s period, WNW swell with glassy winds.
- Most powerful swell: Thursday 15 Oct, 2PM (local time) - 7.5ft (2.3m), 13s period, W swell with 1,810 kJ wave energy.
- Next surfable swell (1★+): Sunday 11 Oct, 2AM (local time) - 4.5ft (1.4m), 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 Sunday (Oct 11) at 2AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.5m and 14s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Belle Ile - Les Donnants in the next 16 days are 2.3m 13s and forecast to arrive on Thursday (Oct 15) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Oct 16) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 11th Oct) | 4.5ft (1.4m) 10s |
| Best Surf | 2AM (Sun 11th Oct) | 4.5ft (1.4m) 10s |
| Most Powerful | 2PM (Thu 15th Oct) | 7.5ft (2.3m) 13s |
Table - best surf conditions forecast for Belle Ile - Les Donnants over the next 16 days.
Short Range ForecastLight rain (total 5mm), mostly falling on Fri night. Very mild (max 18°C on Sun afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the W on Fri night, calm by Sat night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon morning. Very mild (max 19°C on Mon night, min 16°C on Tue night). Winds decreasing (fresh winds from the SW on Mon afternoon, light winds from the ESE by Wed morning). | ||||||||||||||||||||
Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | |||||||||||||||
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) | WNW 11 | W 6 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 12 | WNW 12 | WNW 11 | W 13 | W 12 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 13 | W 13 | W 13 | W 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 75 | 194 | 1010 | 607 | 460 | 400 | 503 | 349 | 133 | 1461 | 1324 | 1096 | 840 | 867 | 580 | 502 | 514 | 1087 | 1710 | 1778 | 1174 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross | cross | cross-on | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-off | on | cross-on | on | cross-on | cross | cross-off |
High Tide | 4:50PM4.30m | 5:10AM4.18m | 5:24PM4.35m | 5:41AM4.25m | 5:55PM4.31m | 6:10AM4.24m | 6:25PM4.19m | 6:38AM4.15m | 6:54PM4.00m | 7:06AM4.00m | 7:24PM3.77m | 7:36AM3.79m | 7:55PM3.50m | ||||||||
Low Tide | 10:28AM0.23m | 10:52PM0.05m | 11:07AM0.08m | 11:28PM0.00m | 11:44AM0.03m | 00:02AM0.05m | 12:19PM0.08m | 00:36AM0.19m | 12:55PM0.23m | 1:10AM0.41m | 1:31PM0.46m | 1:45AM0.68m | 2:09PM0.74m | 2:23AM0.97m | |||||||
 |  |  |  | |  | |  | |  | | | | | | | | | | | | |
 | 8:21 | — | — | 8:22 | — | — | 8:23 | — | — | 8:26 | — | — | 8:26 | — | — | 8:29 | — | — | 8:30 | — | — |
 | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:25 | — |
mm | — | — | 2 | — | — | — | — | 1 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 17 | 14 | 15 | 15 | 16 | 18 | 18 | 18 | 18 | 19 | 18 | 18 | 18 | 16 | 17 | 17 | 16 | 17 | 13 |
Feels °C | 12 | 13 | 12 | 9 | 11 | 11 | 12 | 15 | 16 | 15 | 15 | 17 | 16 | 17 | 17 | 17 | 16 | 15 | 13 | 14 | 8 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | W 16 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 12 | WNW 12 | WNW 11 | W 13 | W 12 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 13 | W 13 | W 13 | W 12 |
| kJ | 75 | 5 | 810 | 607 | 460 | 400 | 503 | 349 | 133 | 1461 | 1324 | 1096 | 840 | 867 | 580 | 502 | 514 | 1087 | 1710 | 1778 | 1174 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 18 | WNW 14 | — | — | SSE 4 | — | — | — | — | — | — | W 16 | W 15 | — | — | — | — |
| kJ | — | — | — | — | 6 | 115 | — | — | 6 | — | — | — | — | — | — | 5 | 68 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 16 | WNW 15 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 19 | 43 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | W 6 | WNW 10 | — | — | — | — | SSW 4 | WSW 6 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 64 | 194 | 1010 | — | — | — | — | 15 | 57 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 389 | 436 | 36 | 36 | 87 | 0 | 118 | 155 | 121 | 155 | 155 | 101 | 101 | 36 | 20 | 20 | 44 | 44 | 124 | 28 | 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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