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

information circle16 Day Weather and Surf, issued 7 pm Sunday 31 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
19.8° C
(Which is 4.9°C warmer than normal for this time of year)

Belle Ile - Les Donnants surf forecast from 31 May 2026:

  • Best quality surf: Friday 5 Jun, 11AM (local time) - 10ft (3.0m), 12s period, W swell with onshore winds.
  • Most powerful swell: Thursday 4 Jun, 8PM (local time) - 11ft (3.5m), 12s period, W swell with 3,520 kJ wave energy.
  • Next surfable swell (1★+): Friday 5 Jun, 11AM (local time) - 10ft (3.0m), 12s period with W 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 Friday (Jun 05) at 11AM. The primary swell is predicted to be 3.0m and 12s period. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Belle Ile - Les Donnants in the next 16 days are 3.5m 12s and forecast to arrive on Thursday (Jun 04) at 8PM. 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 Sunday (Jun 07) at 11PM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Fri 5th Jun)10ft (3.0m) 12s
Best Surf11AM (Fri 5th Jun)10ft (3.0m) 12s
Most Powerful 8PM (Thu 4th Jun)11ft (3.5m) 12s

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 Mon night. Very mild (max 18°C on Wed afternoon, min 16°C on Sun night). Winds increasing (light winds from the NW on Sun night, strong winds from the W by Tue afternoon).

Days 5-7 Weather Summary

Light rain (total 7mm), mostly falling on Wed night. Very mild (max 18°C on Wed night, min 14°C on Thu night). Winds decreasing (strong winds from the WSW on Wed night, light winds from the SSW by Fri night).

Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sun
7
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
1
0
0
0
0
0
0
0
0
0
0
0
!
2
1
1
1
2
2
2
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)
1.7
W
11
1.5
W
11
1.3
W
11
1.7
WSW
10
2.4
W
7
2.5
W
8
2.4
W
9
2.3
W
10
3
WSW
8
3
W
9
3.5
W
11
3.5
W
12
3.5
W
12
3
W
12
2.4
W
12
1.9
W
11
1.5
W
11
1.2
W
11
1
W
11
1.2
WNW
10
1.1
W
12
Wave Graph
Metric surfscale
Energy kJ
739
536
387
610
620
897
942
1004
968
1533
2843
3401
3295
2300
1610
914
553
332
238
324
339
Wind (km/h)
15
WNW
15
SW
25
SW
40
SW
45
W
45
W
35
W
45
SW
45
WSW
45
W
45
W
45
W
40
W
20
W
15
WSW
10
SSW
10
W
10
W
15
NNE
15
ENE
5
NNW
cross-on
cross-on
cross-on
cross-on
on
on
on
cross-on
cross-on
on
on
on
on
on
cross-on
cross-on
on
on
cross-off
off
cross
High Tide
5:57AM3.71m
6:11PM3.88m
6:30AM3.67m
6:44PM3.84m
7:04AM3.59m
7:20PM3.77m
7:40AM3.48m
7:57PM3.67m
8:18AM3.36m
8:38PM3.56m
9:01AM3.24m
9:23PM3.45m
9:52AM3.16m
Low Tide
11:54PM0.54m
12:08PM0.63m
00:32AM0.58m
12:45PM0.68m
1:11AM0.65m
1:23PM0.77m
1:51AM0.76m
2:02PM0.87m
2:32AM0.88m
2:43PM0.99m
3:16AM0.99m
3:28PM1.09m
4:05AM1.06m
4:19PM1.17m
part cloud
clear
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
light rain
rain showers
light rain
light rain
rain showers
rain showers
part cloud
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:20
6:18
6:18
6:18
6:18
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:00
10:00
10:00
10:01
10:02
10:04
10:05
10:06
6
1
1
2
1
2
1
1
Temp °C
16
16
17
17
16
16
16
16
18
18
16
15
15
15
15
16
16
16
16
15
21
12
15
14
13
9
7
8
9
11
11
7
6
5
9
11
14
13
15
14
12
20
Swell 1
Height (m)
Direction
Period (s)
1.7
W
11
1.5
W
11
1.3
W
11
1.1
W
10
3
W
12
2.4
W
12
1.9
W
11
1.5
W
11
1.2
W
11
1
W
11
1.2
WNW
10
1.1
W
12
Energy kJ
739
536
387
247
2300
1610
914
553
332
238
324
339
Swell 2
Height (m)
Direction
Period (s)
0.3
SE
4
0.2
WNW
10
0.5
WSW
13
1
WNW
11
Energy kJ
2
10
102
230
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
4
Energy kJ
1
Wind waves
Height (m)
Direction
Period (s)
0.4
SW
3
1.7
WSW
10
2.4
W
7
2.5
W
8
2.4
W
9
2.3
W
10
3
WSW
8
3
W
9
3.5
W
11
3.5
W
12
3.5
W
12
0.3
NNW
2
0.4
NNE
3
Energy kJ
2
610
620
897
942
1004
968
1533
2843
3401
3295
1
4
Nearest Offshore or Glassy
Rating
(10 max)
3
2
2
2
2
1
2
1
2
2
2
3
2
3
4
3
2
1
2
2
3
Distance (km)
36
101
121
156
370
397
430
348
436
426
435
435
429
148
93
28
44
81
0
0
20
Best forecast wave conditions in Morbihan - Brittany
Rating
(10 max)
3
3
2
2
2
3
Best forecast wave conditions in France
Rating
(10 max)
3
3
2
2
1
2
3
2
2
4
4
4
4
3
2
3
3
3
Header Global
Rating
(10 max)
5
5
4
5
5
4
4
5
5
5
4
5
5
6
9
9
7
9
9
9
9
  • 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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