Belle Ile - Les Donnants surfForecast / Brittany – Morbihan / France

information circle12 Day Weather and Surf, issued 1 am Wednesday 09 Jul 2025 CEST
Forecast 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
18.8° C
(Which is 1.1°C warmer than 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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 09) at 5AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.4m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Belle Ile - Les Donnants in the next 12 days are 2.1m 10s and forecast to arrive on Wednesday (Jul 16) at 8AM. Winds are predicted to be 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 Thursday (Jul 10) at 8AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 9th Jul)2.5ft (0.8m) 8s
Best Surf 5AM (Wed 9th Jul)2.5ft (0.8m) 8s
Most Powerful 8AM (Wed 16th Jul)7ft (2.1m) 10s

Table - best surf conditions forecast for Belle Ile - Les Donnants over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
WNW
0.5
WNW
0.4
WNW
0.4
WNW
0.5
WNW
0.5
WNW
0.5
WNW
0.5
WNW
0.5
WNW
0.5
WNW
0.5
WNW
0.5
WNW
0.5
WNW
0.6
W
0.7
WNW
0.8
W
0.8
W
1
W
0.5
W
0.9
W
1.3
WSW
2.2
WSW
1.9
WSW
2.3
WSW
2.3
W
2.2
W
1.5
W
1
W
0.9
W
0.5
W
0.9
W
1
W
0.9
W
0.9
W
0.8
W
1.4
WSW
Period(s) (?)777710999998888998887799898877101099888
Wave
Graph
(?)Metric surfscale
Energy (?)4330272254494645474340404052891039414580119324740612671803612259107928416316812511287237
Wind
(km/h)
10
ENE
15
W
25
NE
20
ENE
15
W
30
ENE
20
E
15
WNW
30
ENE
25
E
10
NW
25
ENE
20
ESE
15
SW
10
W
5
SE
15
WNW
25
WNW
25
WNW
40
W
25
WNW
20
W
20
W
20
WSW
15
WSW
20
SW
30
SSW
30
SW
25
SSW
35
SSW
30
SW
40
SW
40
WSW
35
W
30
WSW
25
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
oncross-
off
offoncross-
off
offcross-
on
cross-
off
offcross-
on
offoffcross-
on
oncross-
off
ononcross-
on
oncross-
on
ononononcross-
on
cross-
on
cross-
on
crosscrosscross-
on
cross-
on
cross-
on
ononon
High Tide
/ height (m)
4:52PM
3.67
5:13AM
3.59
5:30PM
3.84
5:50AM
3.71
6:07PM
3.99
6:27AM
3.80
6:44PM
4.09
7:04AM
3.84
7:21PM
4.14
7:43AM
3.84
7:59PM
4.14
8:23AM
3.79
8:41PM
4.06
9:06AM
3.71
9:26PM
3.92
9:55AM
3.59
10:18PM
3.74
10:52AM
3.47
11:21PM
3.55
12:01PM
3.38
12:38AM
3.41
1:22PM
3.40
2:03AM
3.41
Low Tide
/ height (m)
10:39AM
0.87
11:06PM
0.73
11:20AM
0.71
11:46PM
0.58
11:59AM
0.57
12:26AM
0.45
12:38PM
0.47
1:05AM
0.37
1:16PM
0.42
1:45AM
0.33
1:55PM
0.42
2:26AM
0.34
2:37PM
0.48
3:09AM
0.42
3:23PM
0.59
3:57AM
0.54
4:15PM
0.73
4:51AM
0.70
5:15PM
0.87
5:52AM
0.85
6:24PM
0.95
7:01AM
0.94
7:37PM
0.93
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Sunrise6:24--6:26--6:26--6:28--6:28--6:30--6:31--6:31--6:33--6:33--6:35--6:35--
Sunset-10:08--10:08--10:07--10:07--10:07--10:06--10:05--10:05--10:04--10:02--10:01--10:00-
clearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearrain showersrain showerspart cloudpart cloudpart cloudpart cloudpart cloudcloudpart cloudthunderstorm cloudrain showersclearclearthunderstorm rain showersclearpart cloud
Rain (mm)
------------------11-------2-1--41--
Temp. °C151922212727232828243132222522212223191918181818181919192021191918181818
Feels °C (?)131520162321192423202928182321222320161612151516161816151817151412121314

Short Range Forecast: Mostly dry. Warm (max 28°C on Fri afternoon, min 14°C on Wed morning). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 32°C on Sat night, min 19°C on Mon night). Winds decreasing (fresh winds from the ENE on Sat morning, calm by Mon morning).

Days 6-9 Weather Summary Light rain (total 2mm), mostly falling on Tue morning. Very mild (max 19°C on Tue morning, min 17°C on Tue night). Winds decreasing (strong winds from the WNW on Tue night, light winds from the SW by Thu afternoon).

Long Range Forecast: Light rain (total 9mm), mostly falling on Fri morning. Warm (max 21°C on Fri night, min 18°C on Sat morning). Winds decreasing (strong winds from the SW on Sat night, moderate winds from the W by Mon morning).

  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 12 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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