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 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Belle Ile - Les Donnants sea temperature is
19.7° C

2.3°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 3 Jul 2026:

  • Best quality surf: Friday 3 Jul, 8AM (local time) - 4.5ft (1.3m), 10s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Friday 3 Jul, 8PM (local time) - 5ft (1.5m), 10s period, WNW swell with 416 kJ wave energy.
  • Next surfable swell (1★+): Friday 3 Jul, 8AM (local time) - 4.5ft (1.3m), 10s period with WNW 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 (Jul 03) at 8AM. The primary swell is predicted to be 1.3m and 10s period. 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 16 days are 1.5m 10s and forecast to arrive on Friday (Jul 03) 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 0.9m 4s period and expected on Monday (Jul 06) at 5AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 3rd Jul)4.5ft (1.3m) 10s
Best Surf 8AM (Fri 3rd Jul)4.5ft (1.3m) 10s
Most Powerful 8PM (Fri 3rd Jul)5ft (1.5m) 10s

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


Updates in  hr  min  s Forecast update imminent

Alright crew, Rusty here. Let’s break down the 16-day run for this spot.

We kick off with a short window of clean waves, but then we hit a massive dry spell that goes on for over a week. After that, the swell comes back, but the wind is a total mess for the most part. The very end of the period offers a couple of tiny, clean windows, but it’s a long wait.

The absolute pick of the fortnight is Friday morning, July 3rd, at Belle Ile - Les Donnants. This is a river break that’s exposed to the SW, so a 4ft swell from the WNW isn’t a perfect match, but it works. The period is 10 seconds, which gives the waves some push. The wind is the hero here—a light 3 mph breeze from the NE, keeping it clean and glassy. The water is sitting at a very warm 68°, which is 4° above normal for this time of year. The combined energy is moderate (320). It’s consistent and beginner-friendly, but expect a crowd—it’s often busy here.

That Friday afternoon, the 3rd, is a write-off as the wind howls onshore.

Saturday morning, July 4th, is your next look. It’s smaller, with a 3ft swell from the W, and a gentle 9 mph cross-off from the ENE. It’ll be clean, but the energy is dropping to (208). Surfable, but just okay.

From Saturday afternoon the 4th all the way through to Monday the 13th of July, it's grim. The wind is onshore or cross-onshore nearly every day, and the swell is tiny—mostly under 2ft. A couple of mornings, like Sunday the 5th and Monday the 6th, are clean but weak, with energy as low as (56). Not worth paddling out. That’s a solid 9-day gap of poor surf.

Monday the 13th of July afternoon brings a new swell, but it comes with a 22 mph onshore wind. You get 4ft waves with a 12-second period, and the energy jumps to (430), but the onshore wind makes it a messy, choppy mess. Not for surfing.

Tuesday the 14th of July sees the biggest swell of the period. The morning delivers 5ft from the WNW with a period of 11 seconds and a stiff cross-onshore breeze. The combined energy is strong (519). That size is for experts only, and the wind will wreck any shape. Honestly, this is more of a kite-surfing day than a paddle day.

The best of the second week is Wednesday the 15th of July morning. The wind is light and cross from the N at 6 mph. The swell is 3ft from the WNW. Energy is moderate (113). Small, clean, and weak—suitable for a longboard.

Thursday the 16th of July morning is similar with a 3ft swell, a slight cross-off from the SE, and weak energy (123). Same deal—small and tidy but not punchy. After that, it’s back to wind-blown slop for the 17th and 18th.

Don’t sleep on Friday morning the 3rd. That’s your day.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Sun afternoon, min 15°C on Fri morning). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 31°C on Tue night, min 21°C on Mon morning). Winds decreasing (fresh winds from the NNE on Tue night, calm by Wed afternoon).

Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
0
2
0
0
1
0
0
1
0
0
0
0
0
0
0
0
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)
1.3
WNW
10
1.2
WNW
10
1.2
WNW
10
1
W
10
0.9
WNW
10
0.9
WNW
10
0.7
W
10
0.6
W
9
0.4
WNW
9
0.6
WNW
9
0.6
WNW
9
0.6
W
8
0.5
W
9
0.5
W
9
0.6
WNW
6
0.4
WNW
10
0.5
W
9
0.5
W
9
0.5
W
9
0.5
W
9
0.6
WNW
10
Wave Graph
Metric surfscale
Energy kJ
320
300
306
208
170
160
92
61
32
62
58
52
39
39
21
32
43
41
41
42
75
Wind (km/h)
5
NE
30
WNW
25
NE
15
ENE
25
WNW
25
NE
15
ENE
15
W
30
ENE
20
E
5
W
25
NE
15
NNE
20
WNW
25
NE
20
ENE
10
WNW
30
NE
20
E
10
W
25
NE
Wind State
cross-off
on
cross-off
cross-off
on
cross-off
off
on
cross-off
off
on
cross-off
cross-off
on
cross-off
cross-off
on
cross-off
off
on
cross-off
High Tide
7:43PM3.89m
8:02AM3.59m
8:19PM3.83m
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
Low Tide
1:43PM0.64m
2:11AM0.62m
2:20PM0.70m
2:49AM0.68m
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
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:22
6:22
6:22
6:24
6:24
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:12
10:12
10:10
10:10
10:10
10:09
10:08
 mm
Temp °C
16
21
25
20
26
27
19
28
28
23
30
30
24
29
31
22
29
28
27
32
30
Feels °C
15
15
19
16
20
23
17
25
24
19
28
25
21
24
26
20
27
24
24
30
26
Swell 1
Height (m)
Direction
Period (s)
1.3
WNW
10
1.2
WNW
10
1.2
WNW
10
1
W
10
0.9
WNW
10
0.9
WNW
10
0.7
W
10
0.6
W
9
0.4
WNW
9
0.6
WNW
9
0.6
WNW
9
0.6
W
8
0.5
W
9
0.5
W
9
0.6
WNW
6
0.4
WNW
10
0.5
W
9
0.5
W
9
0.5
W
9
0.5
W
9
0.6
WNW
10
Energy kJ
320
300
306
208
170
160
92
61
32
62
58
52
39
39
20
32
43
41
41
42
75
Swell 2
Height (m)
Direction
Period (s)
0.1
NW
12
0.1
NW
10
0.2
WNW
10
0.4
NW
8
0.4
W
8
0.4
SE
4
0.4
WNW
8
0.1
NW
4
0.2
ENE
3
0.2
WNW
12
0.4
ESE
4
0.1
SE
4
Energy kJ
6
4
9
18
23
4
21
1
1
15
6
1
Swell 3
Height (m)
Direction
Period (s)
0.4
NW
11
0.2
ESE
3
0.2
WNW
11
0.1
W
7
0.2
WNW
11
0.1
W
16
Energy kJ
29
1
11
1
12
5
Wind waves
Height (m)
Direction
Period (s)
0.3
WNW
3
0.7
NE
4
0.5
NE
3
0.3
NW
2
0.6
NE
3
0.5
ENE
4
0.6
NE
3
0.7
E
4
0.7
NE
4
0.6
NE
4
0.4
NW
2
0.7
NE
4
0.6
ENE
4
0.2
NNE
3
0.8
NNE
4
0.6
E
4
0.2
ENE
3
0.6
NE
3
Energy kJ
1
12
6
1
9
8
9
15
14
8
2
15
10
1
18
10
1
6
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
0
220
28
0
158
28
0
36
28
0
90
90
90
173
90
101
336
101
0
90
49
Best forecast wave conditions in Morbihan - Brittany
Rating
(10 max)
2
2
2
1
1
1
1
1
1
1
Best forecast wave conditions in France
Rating
(10 max)
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
9
5
9
5
6
8
5
9
7
5
9
9
8
6
5
9
9
9
5
5
6
  • 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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