Belle Ile - Les Donnants Surf Break

Belle Ile - Les Donnants Surf Forecast and Surf Report

Lat Long: 47.32° N 3.24° W

Issued: 1 am 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Belle Ile - Les Donnants sea temperature is
19.0° C

1.5°C warmer than normal for this time of year

Belle Ile - Les Donnants surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Belle Ile - Les Donnants surf forecast from 5 Jul 2026:

  • Best quality surf: Sunday 5 Jul, 11AM (local time) - 2.5ft (0.7m), 10s period, W swell with offshore winds.
  • Most powerful swell: Friday 10 Jul, 11PM (local time) - 4ft (1.2m), 9s period, WNW swell with 208 kJ wave energy.
  • Next surfable swell (1★+): Sunday 5 Jul, 11AM (local time) - 2.5ft (0.7m), 10s 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 Sunday (Jul 05) at 11AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.2m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Belle Ile - Les Donnants in the next 16 days are 1.2m 9s and forecast to arrive on Friday (Jul 10) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Jul 06) at 5AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sun 5th Jul)2.5ft (0.7m) 10s
Best Surf11AM (Sun 5th Jul)2.5ft (0.7m) 10s
Most Powerful11PM (Fri 10th Jul)4ft (1.2m) 9s

Table - best surf conditions forecast for Belle Ile - Les Donnants over the next 16 days.


Updates in  hr  min  s Forecast update imminent

G’day, I’m Rusty. Let’s have a look at what’s comin’ up for Belle Ile - Les Donnants over the next couple of weeks.

Right off the bat, we’ve got a pretty quiet stretch ahead. The water’s sittin’ at 66°F – that’s a touch warmer than normal for this time of year, so you can leave the thick steamer at home for now.

The first real chance of a paddle comes Sunday 5 July morning. There’s only 2ft of swell from the W with a period of 10 seconds, and the wind’s blowin’ light offshore from the ENE at 6 mph. That’s clean enough for a longboard or a foamie, but the energy’s weak – only 101 (moderate energy) – so don’t expect much push. It’s a beginner-friendly wave, consistent, but honestly, it’s pretty ordinary.

The true standout in this whole 16-day window is Tuesday 14 July morning. This is the one to circle on the calendar. We’ve got 3ft of WNW swell runnin’ with a period of 11 seconds – that’s a solid groundswell, and the energy jumps to 200 (strong wave energy). The wind is glassy, light from the NE at 3 mph, makin’ for clean, lined-up waves. The swell direction matches the optimum for this river break, so it’ll wrap in nicely. Keep in mind, this spot can get crowded sometimes, so get in early. After that morning, the wind swings onshore and the quality drops fast.

Outside of that Tuesday morning, there’s really not much else. Through the rest of the first week and into the second, we’re lookin’ at mostly poor surf conditions – small swell, short periods, and onshore or cross-onshore winds makin’ a mess of things. A few mornings like Saturday 11 July and Sunday 12 July offer clean offshore winds but the swell is tiny – 2ft to 2ft – and the energy is weak (between 62 and 82). Not worth gettin’ wet for unless you’re desperate.

By Friday 17 July morning, the wind is howlin’ offshore from the ENE at 25 mph – that’s strong offshore, clean but hard to paddle into with only 2ft of swell. More of a kite session than a surf.

The last few days of the run, from 18 July through 20 July, are flat or junk. Monday 20 July morning has glassy conditions but only 1ft of swell – barely a ripple.

Bottom line: if you’re free on Tuesday 14 July morning, hit it. That’s the best the 16 days have to offer. For the rest, it’s a long, quiet spell. But it’s a consistent spot, so it won’t stay poor forever.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 32°C on Tue afternoon, min 18°C on Sun morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Wed afternoon, min 18°C on Wed night). Wind will be generally light.

Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
1
1
0
0
0
0
0
0
0
0
0
0
1
0
1
1
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)
0.7
W
10
0.7
WNW
10
0.6
WNW
9
0.6
WNW
9
0.6
WNW
9
0.6
WNW
8
0.5
W
9
0.5
W
9
0.4
WNW
8
0.4
WNW
8
0.5
W
10
0.6
WNW
10
0.6
WNW
10
0.8
W
9
0.9
W
9
0.8
WNW
9
0.9
WNW
9
1.1
WNW
9
0.7
WNW
8
0.6
W
8
0.6
W
8
Wave Graph
Metric surfscale
Energy kJ
92
96
62
62
59
55
39
39
22
21
48
72
71
109
130
118
135
172
70
48
49
Wind (km/h)
10
ENE
20
W
25
NE
20
E
5
WSW
20
NE
15
E
10
WSW
20
NE
15
E
20
WSW
20
W
15
WSW
15
W
10
W
5
SE
15
WNW
5
NNW
15
E
25
W
30
NE
Wind State
off
on
cross-off
off
glassy
cross-off
off
on
cross-off
off
on
on
cross-on
on
on
cross-off
on
cross-on
off
on
cross-off
High Tide
8:40AM3.53m
8:57PM3.75m
9:21AM3.46m
9:40PM3.65m
10:09AM3.39m
10:30PM3.54m
11:06AM3.33m
11:33PM3.45m
12:15PM3.33m
00:47AM3.42m
1:31PM3.42m
2:07AM3.51m
2:43PM3.62m
3:19AM3.68m
Low Tide
2:59PM0.79m
3:30AM0.75m
3:43PM0.89m
4:16AM0.82m
4:33PM0.98m
5:09AM0.90m
5:33PM1.04m
6:10AM0.94m
6:40PM1.03m
7:17AM0.92m
7:51PM0.91m
8:24AM0.81m
8:58PM0.69m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:24
6:24
6:24
6:26
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:10
10:10
10:10
10:09
10:08
10:08
10:07
 mm
Temp °C
19
26
27
23
29
31
25
32
30
24
26
21
18
19
20
20
21
23
25
28
31
Feels °C
18
22
23
20
28
28
21
29
25
20
22
18
18
19
18
20
20
22
22
26
26
Swell 1
Height (m)
Direction
Period (s)
0.7
W
10
0.7
WNW
10
0.6
WNW
9
0.6
WNW
9
0.6
WNW
9
0.6
WNW
8
0.5
W
9
0.5
W
9
0.4
WNW
8
0.4
WNW
8
0.5
W
10
0.6
WNW
10
0.6
WNW
10
0.5
W
9
0.6
W
9
0.8
WNW
9
0.9
WNW
9
1.1
WNW
9
0.7
WNW
8
0.6
W
8
0.6
W
8
Energy kJ
92
96
62
62
59
55
39
39
22
21
48
72
71
44
60
118
135
172
70
48
49
Swell 2
Height (m)
Direction
Period (s)
0.2
WNW
10
0.1
NW
9
0.2
WNW
4
0.3
ESE
4
0.2
E
3
0.2
WNW
10
0.3
WNW
10
0.3
WNW
7
0.6
W
9
0.2
WNW
11
0.3
WNW
10
0.4
WNW
9
Energy kJ
9
3
1
3
1
11
19
10
55
12
20
32
Swell 3
Height (m)
Direction
Period (s)
0.2
E
3
0.3
NW
4
0.1
W
12
0.3
E
3
0.2
WNW
3
Energy kJ
1
2
3
2
1
Wind waves
Height (m)
Direction
Period (s)
0.2
ENE
3
0.4
NE
3
0.5
E
4
0.4
NE
3
0.5
E
3
0.2
NNW
2
0.4
SW
3
0.6
W
4
0.4
WSW
4
0.8
W
9
0.9
W
9
0.3
WSW
3
0.3
NE
2
Energy kJ
1
3
6
3
6
1
2
10
7
109
130
1
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
0
158
30
0
0
90
119
90
119
112
90
90
90
90
28
0
144
20
0
118
118
Best forecast wave conditions in Morbihan - Brittany
Rating
(10 max)
1
1
1
1
1
1
1
1
Best forecast wave conditions in France
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
5
9
7
5
6
8
7
5
5
9
8
9
9
5
5
5
5
8
7
6
8
  • 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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