Surf Forecasts:
Belle Ile - Les Donnants surf forecast from 22 Jul 2026:
- Best quality surf: Monday 27 Jul, 8AM (local time) - 4ft (1.2m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 11PM (local time) - 4.5ft (1.4m), 9s period, WNW swell with 304 kJ wave energy.
- Next surfable swell (1★+): Monday 27 Jul, 8AM (local time) - 4ft (1.2m), 9s 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 Monday (Jul 27) at 8AM. The primary swell is predicted to be 1.2m and 9s period with a secondary swell of 0.3m and 3s. 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 1.4m 9s and forecast to arrive on Sunday (Jul 26) 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 0.9m 4s period and expected on Saturday (Jul 25) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 27th Jul) | 4ft (1.2m) 9s |
| Best Surf | 8AM (Mon 27th Jul) | 4ft (1.2m) 9s |
| Most Powerful | 11PM (Sun 26th Jul) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for Belle Ile - Les Donnants over the next 16 days.
The Lowdown
Alright mates, Rusty here. Let’s break down the surf for Belle Ile - Les Donnants for the next couple of weeks.
The first few days are a real bummer. Thursday the 23rd, Friday the 24th, and Saturday the 25th of July are a total write-off. The swell is tiny, barely 0.7 feet, and the wind is all over the shop – onshore, cross-on, just messy. No reason to get wet.
There’s a little flicker of life on Monday the 27th of July. The morning is clean with a light offshore breeze from the ENE. We’re looking at a 4 foot swell from the WNW, 9 second period. The energy is moderate (184). It’s surfable, but nothing to write home about. Tuesday the 28th of July morning is a similar story: clean, 3 foot swell from the WNW, but the energy is weak (96). Not a standout, just a chance to get a few.
The rest of the week and into the next is a battle with onshore winds. The swell tries to pick up a few times, like Sunday afternoon the 2nd of August with a 4 foot swell from the W, but a 35 km/h cross-on wind makes it a lumpy mess.
The best bet, and the only real highlight, is Monday morning the 3rd of August. The swell is 4 feet from the W, with a short 7 second period. The wind is a light 10 km/h from the NNE, a clean cross-off. The energy is moderate (166). That light offshore wind will make it look and feel much better than it is. It’s your best shot.
Also, keep an eye on Tuesday the 4th of August morning. It’s totally glassy – a dead calm from the NNW at 5 km/h. The swell is only 2 feet from the W, but with conditions that clean, you might get a few fun ones on a log.
The water temp is about what you’d expect for this time of year, nothing unusual.
This is a river break that wants a SW swell, but we’re getting mostly W and WNW energy, so it’s a bit off. It’s a consistent spot, and crowds are often a thing here. Just know what you’re getting into.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Fri afternoon, min 18°C on Thu morning). Winds increasing (calm on Thu afternoon, strong winds from the WNW by Sat afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon night, min 17°C on Sun night). Winds decreasing (strong winds from the WNW on Sat night, light winds from the ENE by Mon morning). | ||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
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 9 | W 9 | W 9 | W 9 | W 9 | SE 5 | W 8 | NNW 4 | WNW 5 | WNW 6 | WNW 6 | WNW 7 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 16 | 14 | 14 | 6 | 6 | 7 | 5 | 14 | 92 | 132 | 100 | 178 | 280 | 184 | 158 | 130 | 96 | 71 | 45 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | on | cross-off | off | on | cross-off | cross | cross-on | cross-on | cross-on | on | cross | cross-off | on | cross-off | cross-off | on | cross |
High Tide | 00:00AM3.04m | 12:43PM3.01m | 1:25AM2.93m | 2:05PM3.03m | 2:44AM2.98m | 3:11PM3.16m | 3:41AM3.12m | 4:00PM3.35m | 4:24AM3.30m | 4:40PM3.56m | 5:00AM3.47m | 5:14PM3.76m | |||||||
Low Tide | 6:20AM1.30m | 6:56PM1.36m | 7:26AM1.39m | 8:05PM1.36m | 8:31AM1.34m | 9:07PM1.24m | 9:28AM1.20m | 10:00PM1.05m | 10:16AM1.01m | 10:44PM0.84m | 10:58AM0.80m | 11:24PM0.65m | |||||||
 | | |  | | | | |  |  |  | | | | | | | | | |
 | — | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — |
 | 9:59 | — | — | 9:58 | — | — | 9:57 | — | — | 9:55 | — | — | 9:54 | — | — | 9:52 | — | — | 9:52 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 19 | 26 | 26 | 20 | 27 | 26 | 21 | 22 | 22 | 19 | 19 | 19 | 18 | 20 | 23 | 18 | 20 | 20 |
Feels °C | 18 | 15 | 23 | 21 | 15 | 24 | 20 | 18 | 16 | 14 | 15 | 14 | 12 | 18 | 16 | 21 | 17 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | SE 4 | WNW 4 | W 9 | SE 5 | W 8 | NE 4 | SW 6 | W 10 | W 9 | — | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
| kJ | 16 | 14 | 2 | 1 | 6 | 7 | 5 | 3 | 1 | 8 | 2 | — | 280 | 184 | 158 | 130 | 96 | 71 | 45 |
Swell 2 Height (m) Direction Period (s) | NW 6 | NW 5 | W 9 | W 9 | NW 5 | W 8 | W 12 | W 8 | — | S 6 | W 12 | — | — | — | — | — | ENE 3 | — | W 12 |
| kJ | 1 | 1 | 14 | 6 | 1 | 6 | 3 | 5 | — | 1 | 3 | — | — | — | — | — | 2 | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | NW 6 | ENE 3 | NW 6 | — | — | — | W 10 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 2 | 1 | 1 | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNE 4 | E 4 | — | NE 3 | E 4 | — | NNE 4 | NNW 4 | WNW 5 | WNW 6 | WNW 6 | WNW 7 | N 3 | — | — | N 2 | — | — | WNW 4 |
| kJ | 11 | 10 | — | 4 | 15 | — | 30 | 14 | 92 | 132 | 100 | 178 | 3 | — | — | 1 | — | — | 9 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 350 | 434 | 356 | 377 | 380 | 742 | 277 | 453 | 727 | 158 | 158 | 158 | 28 | 0 | 226 | 28 | 0 | 242 | 90 |
Best forecast wave conditions in Morbihan - Brittany | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
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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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