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

information circle16 Day Weather and Surf, issued 1 am Wednesday 27 May 2026 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
17.2° C
(Which is 2.6°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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (May 27) at 8PM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.3m and 3s. 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 2.2m 11s and forecast to arrive on Monday (Jun 01) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (May 27) at 11AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Wed 27th May)2.5ft (0.8m) 10s
Best Surf 8PM (Wed 27th May)2.5ft (0.8m) 10s
Most Powerful 8PM (Mon 1st Jun)7ft (2.2m) 11s

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 Forecast

Mostly dry. Warm (max 26°C on Fri night, min 17°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Mon night. Warm (max 24°C on Sat night, min 15°C on Sat night). Winds increasing (light winds from the WNW on Sun morning, fresh winds from the WNW by Mon night).

Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
0
0
1
0
0
0
1
2
0
1
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
WNW
11
0.9
WNW
10
0.8
WNW
10
0.7
W
10
0.6
W
10
0.5
W
9
0.5
W
9
0.5
W
12
0.8
W
11
0.9
W
10
0.9
W
10
1.6
W
12
1.6
W
12
1.6
W
12
1.7
W
11
1.7
W
11
2
W
11
2.2
W
11
2.1
W
10
2
W
10
2
W
12
Wave Graph
Metric surfscale
Energy kJ
194
184
133
96
68
42
40
76
157
162
153
786
690
678
739
688
953
1069
799
740
1058
Wind (km/h)
20
SE
5
SW
5
N
15
ESE
5
SSW
5
NNW
15
NE
5
NNE
25
NE
15
N
25
WNW
20
N
5
WNW
20
W
15
W
20
SSW
30
SW
25
W
35
WNW
40
WNW
25
W
cross-off
cross-on
glassy
cross-off
cross
cross-on
cross-off
glassy
cross-off
cross
on
cross
cross-on
on
on
cross-on
cross-on
on
on
on
on
High Tide
3:25PM3.51m
3:41AM3.58m
4:02PM3.64m
4:18AM3.64m
4:36PM3.74m
4:52AM3.69m
5:07PM3.82m
5:25AM3.72m
5:38PM3.87m
5:57AM3.71m
6:11PM3.88m
6:30AM3.67m
6:44PM3.84m
Low Tide
8:51AM0.81m
9:13PM0.84m
9:35AM0.73m
9:57PM0.72m
10:15AM0.67m
10:37PM0.63m
10:53AM0.62m
11:16PM0.56m
11:30AM0.61m
11:54PM0.54m
12:08PM0.63m
00:32AM0.58m
12:45PM0.68m
1:11AM0.65m
clear
clear
clear
clear
cloud
part cloud
cloud
cloud
part cloud
cloud
clear
part cloud
cloud
part cloud
clear
clear
cloud
rain showers
part cloud
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:22
6:22
6:22
6:20
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:55
9:57
9:58
9:59
10:00
10:00
10:00
2
Temp °C
24
22
25
24
25
25
21
25
26
17
23
24
16
17
17
17
18
17
16
16
16
22
22
24
21
23
23
18
26
26
16
20
21
15
14
15
15
14
12
10
9
9
Swell 1
Height (m)
Direction
Period (s)
0.9
WNW
11
0.9
WNW
10
0.8
WNW
10
0.7
W
10
0.6
W
10
0.5
W
9
0.5
W
9
0.5
W
8
0.8
W
11
0.9
W
10
0.9
W
10
1.6
W
12
1.6
W
12
1.6
W
12
1.7
W
11
1.7
W
11
1.5
W
11
2
W
12
Energy kJ
194
184
133
96
68
42
40
37
157
162
153
786
690
678
739
688
526
1058
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
3
0.2
SSE
4
0.1
S
5
0.2
W
14
0.5
W
12
0.3
WNW
5
0.1
W
16
0.3
W
15
1.1
NW
6
Energy kJ
3
1
1
16
76
6
5
38
88
Swell 3
Height (m)
Direction
Period (s)
0.2
S
4
Energy kJ
1
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
3
0.3
ENE
3
0.4
NE
3
0.3
NNE
3
0.4
WNW
3
0.4
NW
4
2
W
11
2.2
W
11
2.1
W
10
2
W
10
1.6
W
10
Energy kJ
2
1
3
2
3
6
953
1069
799
740
522
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
1
1
3
Distance (km)
101
90
0
20
101
47
20
0
28
28
36
32
44
148
44
118
119
155
348
609
155
Best forecast wave conditions in Morbihan - Brittany
Rating
(10 max)
1
1
1
1
1
1
1
2
3
2
2
Best forecast wave conditions in France
Rating
(10 max)
2
2
1
1
1
1
1
1
1
1
2
3
3
2
3
3
3
3
1
1
3
Header Global
Rating
(10 max)
7
7
6
7
9
9
6
5
5
5
5
7
6
5
4
4
4
4
7
7
4
  • Map Icons:
  • Break
  • 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 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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