
Surf Forecasts:
Belle Ile - Les Donnants surf forecast from 4 Jul 2026:
- Best quality surf: Saturday 4 Jul, 11AM (local time) - 3.5ft (1.0m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Saturday 4 Jul, 8PM (local time) - 3.5ft (1.1m), 10s period, WNW swell with 260 kJ wave energy.
- Next surfable swell (1★+): Saturday 4 Jul, 11AM (local time) - 3.5ft (1.0m), 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 Saturday (Jul 04) at 11AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.1m and 13s. 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 1.1m 10s and forecast to arrive on Saturday (Jul 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 Thursday (Jul 09) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sat 4th Jul) | 3.5ft (1.0m) 10s |
| Best Surf | 11AM (Sat 4th Jul) | 3.5ft (1.0m) 10s |
| Most Powerful | 8PM (Sat 4th Jul) | 3.5ft (1.1m) 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 folks, Rusty here. Let’s have a look at what’s on the table for the next couple of weeks.
Well, I’m not gonna lie to you, this is a bit of a rough outlook. The first real window of proper surf is a small one, and it’s right on the doorstep. Overall, we’re looking at a long stretch of very average to poor conditions, with only a couple of mornings worth getting out of bed for.
The standout window is definitely Saturday morning, July 4th. For that morning, Belle Ile - Les Donnants is looking like the only real option. We’ve got a clean 3ft swell rolling in from the W, with a period of 10 seconds. The wind is a light cross-off breeze from the ENE at 6 mph, which should keep the surface glassy. The combined wave energy is solid at 215, and the water is a toasty 68°, which is much warmer than normal for this time of year. This is a river break, so it’s exposed and consistent, but in the afternoon the wind swings onshore and kills it.
After that, things get quiet. Saturday afternoon is a write-off with onshore wind, and Sunday morning, July 5th, is surfable but very ordinary. You’ll find 2ft of swell from the W with a 10-second period, and the wind is offshore from the ENE at 9 mph, so it will be clean. But the energy is weak at 101, and it’s just not that exciting.
From Sunday afternoon all the way through to the end of the forecast, the story is the same: poor surf conditions. We see a few mornings with offshore winds, like Monday July 6th and Thursday July 9th, but the swell is tiny (2ft to 2ft) and the energy is low. It’s just not worth paddling out for.
There is a slight bump in swell around July 12th and 14th, with waves hitting 4ft to 4ft from the WNW, and the energy picks up to 222 and 345 respectively. But the wind is terrible – onshore and strong – so it’s going to be a mess. That’s more of a kite-surfing setup than a paddle surf one, honestly.
After that, the second week is a slow fade. The swell drops back to 2ft and below, and the wind stays mostly onshore or cross-onshore, with a few periods of fresh to strong breezes. Not much to get excited about.
So, to sum it up: your best bet is to hit it hard on Saturday morning, July 4th, at Belle Ile - Les Donnants. After that, it’s a long stretch of small, messy, or blown-out surf. The good news is this break is consistent, so it won’t stay this flat forever. Forecasts can change.
Stay salty.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Mon afternoon, min 17°C on Sat morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 33°C on Wed night, min 20°C on Thu night). Winds increasing (calm on Tue afternoon, fresh winds from the NE by Wed night). | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 10 | W 10 | WNW 9 | WNW 9 | WNW 9 | W 8 | W 9 | W 9 | WNW 8 | WNW 8 | W 10 | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
Wave Graph | |||||||||||||||||||||
208 | 208 | 94 | 92 | 67 | 62 | 62 | 59 | 51 | 39 | 39 | 22 | 21 | 47 | 64 | 68 | 66 | 66 | 64 | 66 | 61 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | cross-off | off | on | cross-off | off | cross-on | cross-off | off | cross-on | cross-off | off | cross-on | cross-off | off | cross | cross | cross-off | cross-on | on |
High Tide | 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 | 1:31PM3.42m | 2:07AM3.51m | |||||||
Low Tide | 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 | 7:17AM0.92m | 7:51PM0.91m | ||||||||
6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | |
— | — | 10:12 | — | — | 10:10 | — | — | 10:10 | — | — | 10:10 | — | — | 10:09 | — | — | 10:08 | — | — | 10:08 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 23 | 26 | 19 | 27 | 27 | 23 | 30 | 30 | 24 | 31 | 31 | 24 | 32 | 33 | 22 | 23 | 22 | 20 | 21 | 20 |
Feels °C | 16 | 18 | 22 | 17 | 24 | 23 | 20 | 28 | 25 | 20 | 27 | 26 | 20 | 29 | 27 | 18 | 21 | 21 | 19 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 10 | W 10 | WNW 9 | WNW 9 | WNW 9 | W 8 | W 9 | W 9 | WNW 8 | WNW 8 | W 10 | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
208 | 208 | 94 | 92 | 67 | 62 | 62 | 59 | 51 | 39 | 39 | 22 | 21 | 47 | 64 | 68 | 66 | 66 | 64 | 66 | 61 | |
Swell 2 Height (m) Direction Period (s) | NW 13 | NW 12 | WNW 5 | WNW 10 | E 3 | NW 4 | — | ESE 3 | — | — | E 3 | WNW 10 | WNW 10 | — | — | — | — | — | — | — | SW 3 |
7 | 6 | 19 | 9 | 1 | 3 | — | 2 | — | — | 1 | 10 | 19 | — | — | — | — | — | — | — | 3 | |
Swell 3 Height (m) Direction Period (s) | — | — | NW 10 | — | NW 9 | — | — | — | — | — | W 11 | WNW 4 | — | — | — | — | — | SW 4 | — | — | — |
— | — | 4 | — | 3 | — | — | — | — | — | 2 | 1 | — | — | — | — | — | 1 | — | — | — | |
Wind waves Height (m) Direction Period (s) | NE 3 | — | NE 3 | ENE 3 | — | NE 3 | E 4 | — | NE 3 | ENE 3 | — | NNE 3 | ENE 3 | — | NE 4 | ENE 4 | SW 4 | NNE 3 | ESE 3 | S 3 | — |
2 | — | 5 | 5 | — | 6 | 10 | — | 5 | 4 | — | 7 | 5 | — | 18 | 7 | 1 | 10 | 1 | 2 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 158 | 28 | 0 | 158 | 32 | 0 | 90 | 90 | 119 | 348 | 90 | 101 | 90 | 49 | 0 | 101 | 101 | 136 | 121 | 90 |
Best forecast wave conditions in Morbihan - Brittany | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










