
Surf Forecasts:
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 Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sun 5th Jul) | 2.5ft (0.7m) 10s |
| Best Surf | 11AM (Sun 5th Jul) | 2.5ft (0.7m) 10s |
| Most Powerful | 11PM (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 ForecastMostly dry. Warm (max 32°C on Tue afternoon, min 18°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly 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 | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | W 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 9 | W 9 | WNW 8 | WNW 8 | W 10 | WNW 10 | WNW 10 | W 9 | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 8 | W 8 |
Wave Graph | |||||||||||||||||||||
92 | 96 | 62 | 62 | 59 | 55 | 39 | 39 | 22 | 21 | 48 | 72 | 71 | 109 | 130 | 118 | 135 | 172 | 70 | 48 | 49 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | ||||||||
6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | |
— | — | 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) | W 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 9 | W 9 | WNW 8 | WNW 8 | W 10 | WNW 10 | WNW 10 | W 9 | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 8 | W 8 |
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) | WNW 10 | NW 9 | WNW 4 | — | ESE 4 | — | — | E 3 | WNW 10 | WNW 10 | WNW 7 | — | — | — | — | — | — | W 9 | WNW 11 | WNW 10 | WNW 9 |
9 | 3 | 1 | — | 3 | — | — | 1 | 11 | 19 | 10 | — | — | — | — | — | — | 55 | 12 | 20 | 32 | |
Swell 3 Height (m) Direction Period (s) | — | E 3 | NW 4 | — | — | — | — | W 12 | — | E 3 | — | — | — | — | — | — | — | — | — | — | WNW 3 |
— | 1 | 2 | — | — | — | — | 3 | — | 2 | — | — | — | — | — | — | — | — | — | — | 1 | |
Wind waves Height (m) Direction Period (s) | ENE 3 | — | NE 3 | E 4 | — | NE 3 | E 3 | — | NNW 2 | — | SW 3 | W 4 | WSW 4 | W 9 | W 9 | — | WSW 3 | NE 2 | — | — | — |
1 | — | 3 | 6 | — | 3 | 6 | — | 1 | — | 2 | 10 | 7 | 109 | 130 | — | 1 | 1 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
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 | |||||||||||||||||||||
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.










