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Belle Ile - Les Donnants Surf Forecast
/ Brittany – Morbihan (22 surf breaks) /
Surf Forecasts:
Belle Ile - Les Donnants surfForecast / Brittany – Morbihan / France
16 Day Weather and Surf, issued 1 am Wednesday 20 May 2026 CESTForecast update in hr min s Forecast update imminent
Belle Ile - Les Donnants surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Belle Ile - Les Donnants sea temperature is
14.0° C
(Which is normal for this time of year)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 Wednesday (May 20) at 2PM. The primary swell is predicted to be 3.0m and 14s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Belle Ile - Les Donnants in the next 16 days are 3.0m 14s and forecast to arrive on Wednesday (May 20) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (May 26) at 8AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Wed 20th May) | 10ft (3.0m) 14s |
| Best Surf | 2PM (Wed 20th May) | 10ft (3.0m) 14s |
| Most Powerful | 11AM (Wed 20th May) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Belle Ile - Les Donnants over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 25°C on Fri night, min 14°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Sun afternoon, min 21°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
W 14 | W 13 | W 13 | W 12 | W 11 | W 11 | W 10 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 14 | WNW 13 | W 13 | W 12 | W 12 | |
3190 | 2528 | 1442 | 702 | 411 | 326 | 418 | 536 | 441 | 361 | 296 | 244 | 188 | 146 | 79 | 59 | 146 | 277 | 408 | 371 | 289 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | cross-on | cross-off | off | cross-off | cross-off | off | cross-off | off | off | glassy | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 8:17PM4.13m | 8:53AM3.67m | 9:16PM3.88m | 9:58AM3.40m | 10:25PM3.64m | 11:15AM3.21m | 11:44PM3.48m | 12:36PM3.17m | 1:01AM3.44m | 1:45PM3.25m | 2:05AM3.46m | 2:40PM3.38m | 2:58AM3.52m | ||||||||
Low Tide | 2:08PM0.40m | 2:44AM0.34m | 3:03PM0.65m | 3:45AM0.59m | 4:04PM0.87m | 4:50AM0.80m | 5:11PM1.03m | 5:58AM0.92m | 6:20PM1.09m | 7:04AM0.94m | 7:25PM1.06m | 8:01AM0.89m | 8:23PM0.96m | ||||||||
 | |  | | | | | | | | | | | | | |  | | | | | |
 | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — |
 | — | — | 9:47 | — | — | 9:49 | — | — | 9:50 | — | — | 9:51 | — | — | 9:52 | — | — | 9:52 | — | — | 9:54 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 15 | 15 | 15 | 15 | 19 | 22 | 21 | 24 | 25 | 23 | 25 | 26 | 21 | 27 | 27 | 22 | 26 | 27 | 23 | 27 | 27 |
11 | 11 | 14 | 11 | 16 | 19 | 18 | 23 | 24 | 19 | 26 | 25 | 18 | 25 | 25 | 19 | 25 | 27 | 22 | 28 | 25 | |
Swell 1 Height (m) Direction Period (s) | W 14 | W 13 | W 13 | W 12 | W 11 | W 11 | W 10 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 10 | WNW 13 | W 13 | W 12 | W 12 |
 kJ | 3190 | 2528 | 1442 | 702 | 411 | 326 | 418 | 536 | 441 | 361 | 296 | 244 | 188 | 146 | 79 | 59 | 65 | 277 | 408 | 371 | 289 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SSE 4 | SSE 4 | — | SE 4 | — | — | — | — | W 15 | W 14 | W 9 | — | — | — |
| kJ | — | — | — | — | — | — | — | 3 | 3 | — | 4 | — | — | — | — | 40 | 146 | 57 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 3 | SE 3 | SSE 4 | SE 3 | SE 4 | — | SE 4 | — | ESE 3 | E 3 | ESE 3 | ENE 4 | ENE 4 | E 4 | ENE 4 | E 4 | SE 4 | SE 4 |
| kJ | — | — | — | 2 | 4 | 7 | 3 | 3 | — | 6 | — | 1 | 3 | 2 | 10 | 11 | 6 | 15 | 15 | 9 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 148 | 101 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 28 | 20 | 0 | 28 | 0 | 0 | 28 | 0 | 0 | 28 |
Best forecast wave conditions in Morbihan - Brittany | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Belle Ile - Les Donnants surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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