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

information circle16 Day Weather and Surf, issued 7 pm Wednesday 13 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
15.4° C
(Which is 2.0°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Belle Ile - Les Donnants this week:

The most powerful waves expected at Belle Ile - Les Donnants in the next 16 days are 3.0m 10s and forecast to arrive on Tuesday (May 19) 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 0.9m 4s period and expected on Friday (May 15) at 8AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Tue 19th May)10ft (3.0m) 10s

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

Light rain (total 8mm), mostly falling on Thu afternoon. Very mild (max 13°C on Wed night, min 10°C on Thu afternoon). Winds decreasing (strong winds from the WNW on Wed night, light winds from the W by Sat afternoon).

Days 5-7 Weather Summary

Heavy rain (total 27mm), heaviest during Mon night. Very mild (max 16°C on Tue morning, min 12°C on Sun morning). Winds increasing (moderate winds from the SW on Sat night, strong winds from the SSW by Mon night).

Thursday
14
Friday
15
Saturday
16
Sunday
17
Monday
18
Tuesday
19
Wed
20
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
WNW
8
2.2
WNW
9
2.5
WNW
9
2
NW
9
1.4
WNW
9
1.3
WNW
9
1.1
NW
6
0.9
WNW
8
0.7
WNW
8
0.5
WNW
8
1
W
7
1.3
W
7
1.7
W
13
1.9
W
12
1.6
WNW
12
2.2
WSW
8
3
WSW
10
3
WSW
10
2.5
WSW
10
2.3
W
10
2.2
W
11
Wave Graph
Metric surfscale
Energy kJ
650
830
898
693
348
292
83
98
60
32
97
157
972
1062
718
634
1593
1491
1132
1076
1116
Wind (km/h)
40
NW
40
NW
40
NW
35
NNW
25
N
20
NW
25
NNW
15
NW
15
WSW
25
W
25
NW
35
W
35
WSW
30
W
25
SW
40
WSW
30
WSW
35
WSW
30
WSW
25
WSW
20
WSW
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
on
cross-on
on
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
High Tide
3:12AM3.86m
3:41PM3.90m
3:58AM4.13m
4:24PM4.17m
4:44AM4.32m
5:07PM4.37m
5:30AM4.40m
5:51PM4.47m
6:17AM4.36m
6:37PM4.46m
7:05AM4.21m
7:25PM4.33m
7:57AM3.96m
Low Tide
9:00PM0.70m
9:27AM0.39m
9:47PM0.40m
10:12AM0.17m
10:34PM0.13m
10:57AM0.02m
11:20PM-0.05m
11:42AM-0.02m
00:08AM-0.11m
12:29PM0.04m
00:57AM-0.06m
1:17PM0.19m
1:49AM0.10m
2:08PM0.40m
rain showers
cloud
light rain
rain showers
clear
rain showers
rain showers
part cloud
part cloud
light rain
light rain
part cloud
light rain
light rain
light rain
rain showers
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:37
6:35
6:33
6:33
6:31
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:38
9:39
9:42
9:43
9:44
9:45
9:46
9:47
1
2
1
1
3
3
4
1
4
1
14
Temp °C
13
11
12
11
11
13
12
10
12
14
12
13
13
14
13
15
16
15
15
15
15
3
2
3
3
5
9
5
4
7
9
5
6
6
8
7
9
11
10
9
11
12
Swell 1
Height (m)
Direction
Period (s)
1.4
WNW
9
0.8
WNW
8
0.9
WNW
8
0.1
W
16
0.5
WNW
8
0.4
WNW
13
0.6
W
15
1.7
W
13
1.9
W
12
1.6
WNW
12
0.5
W
11
0.1
SW
13
2.5
WSW
10
2.3
W
10
2.2
W
11
Energy kJ
348
75
98
5
32
55
157
972
1062
718
63
6
1132
1076
1116
Swell 2
Height (m)
Direction
Period (s)
0.1
W
9
0.2
W
15
0.1
W
16
0.5
W
12
0.2
WNW
11
Energy kJ
2
17
5
71
12
Swell 3
Height (m)
Direction
Period (s)
0.1
W
16
0.1
W
9
0.2
W
8
Energy kJ
5
2
6
Wind waves
Height (m)
Direction
Period (s)
2.2
WNW
8
2.2
WNW
9
2.5
WNW
9
2
NW
9
0.7
N
4
1.3
WNW
9
1.1
NW
6
0.7
WNW
8
0.7
W
4
1
W
7
1.3
W
7
0.9
SSW
4
2.2
WSW
8
3
WSW
10
3
WSW
10
Energy kJ
650
830
898
693
19
292
83
60
18
97
152
34
634
1593
1491
Nearest Offshore or Glassy
Rating
(10 max)
2
3
1
1
1
1
1
1
1
1
2
1
4
3
1
2
2
1
2
4
4
Distance (km)
44
494
392
44
36
28
43
90
101
101
90
429
156
44
119
155
370
366
259
101
101
Best forecast wave conditions in Morbihan - Brittany
Rating
(10 max)
2
1
1
1
1
3
Best forecast wave conditions in France
Rating
(10 max)
2
1
2
3
1
2
2
1
1
2
4
4
3
3
3
3
3
4
4
Header Global
Rating
(10 max)
9
4
5
4
5
5
5
4
5
4
5
5
7
4
5
5
4
4
5
5
5
  • 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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