Surf Forecasts:
Belle Ile surf forecast from 8 Aug 2026:
- Best quality surf: Monday 10 Aug, 8AM (local time) - 1.5ft (0.4m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 5AM (local time) - 3.5ft (1.1m), 10s period, WNW swell with 245 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 8AM (local time) - 1.5ft (0.4m), 9s period with WNW swell.
Best Forecast Surf Conditions for Belle Ile this week:
The surf forecast for Belle Ile over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 10) at 8AM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.4m and 7s. Another secondary swell of 0.4m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Belle Ile in the next 16 days are 1.1m 10s and forecast to arrive on Friday (Aug 14) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Aug 11) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 10th Aug) | 1.5ft (0.4m) 9s |
| Best Surf | 8AM (Mon 10th Aug) | 1.5ft (0.4m) 9s |
| Most Powerful | 5AM (Fri 14th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Belle Ile over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s coming up at Belle Ile.
Honestly, for the next week or so, it’s a bit of a tough watch. We’ve got a long stretch of weak, messy, onshore junk. The swell is tiny, mostly around 1ft to 3ft, and the wind is either blowing straight onshore or cross-on, just chopping everything up. The water temp is sitting about average for this time of year, so nothing weird there, but it’s not helping the waves.
The first real glimmer of hope doesn’t show until Wednesday morning, the 12th of August. Even then, it’s only 2ft from the west with a 10-second period, and the combined energy is still weak (102). The wind is a light cross-offshore from the SE though, which cleans it right up. It’s not pumping, but it’s surfable if you’re desperate.
The next day, Thursday the 13th, the swell bumps up a little to 3ft from the west, with a bit more energy (172), but the wind is onshore from the WNW. That’s a write-off. Friday the 14th stays small and cross-on, no good.
We get another clean window on Thursday morning, the 20th of August. The swell is 3ft from the WNW, 8-second period, and the wind is a moderate cross-offshore from the NNE. The combined energy is moderate (157) and the surf is described as clean. That’s your best bet for a few fun little waves, though the short period means it’ll be a bit wobbly at a beach break like this.
Now, Friday the 21st of August afternoon is the real standout. The swell holds at 4ft from the WNW, but the period stretches to 10 seconds, and the wind goes light cross-offshore from the NNE. Combined energy hits 223, which is moderate, and the report says "expect good surf conditions". That’s the one to circle. Clean, some push, decent shape for a beginner-friendly spot.
Crowds are possible at Belle Ile, so keep that in mind, especially if the conditions clean up.
After that, Saturday the 22nd drops back into onshore slop, and the last day, Monday the 24th of August morning, shows a small 2ft clean-up with light cross-offshore wind, but it’s only a 1 out of 10 – just surfable, nothing special.
So to sum it up: the first week is pretty much a bust. The second week has two clean windows – Thursday the 20th morning and especially Friday the 21st afternoon. That Friday session is the best on offer.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Tue afternoon, min 18°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Tue night, min 19°C on Fri morning). Winds increasing (light winds from the SSW on Wed afternoon, fresh winds from the WNW by Fri afternoon). | ||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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) | WNW 10 | WNW 9 | WNW 9 | NW 5 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | W 12 | W 10 | W 10 | W 9 | W 10 | W 11 | W 10 | W 10 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 38 | 35 | 32 | 31 | 32 | 30 | 28 | 26 | 26 | 25 | 100 | 121 | 134 | 143 | 229 | 194 | 115 | 79 | 54 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross | cross | on | cross-off | off | cross-on | cross | cross-off | on | on | on | on | cross | cross-on | on | cross |
High Tide | 2:02AM3.29m | 2:40PM3.50m | 3:21AM3.52m | 3:47PM3.83m | 4:21AM3.80m | 4:40PM4.17m | 5:10AM4.04m | 5:27PM4.44m | 5:53AM4.20m | 6:10PM4.59m | 6:34AM4.26m | 6:49PM4.60m | |||||||
Low Tide | 8:10AM1.03m | 8:51PM0.81m | 9:19AM0.78m | 9:55PM0.48m | 10:16AM0.48m | 10:49PM0.17m | 11:05AM0.20m | 11:36PM-0.06m | 11:50AM0.01m | 00:20AM-0.18m | 12:33PM-0.07m | 1:01AM-0.16m | |||||||
 | | |  | | | | | | | | | | | | | | | | |
 | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — |
 | 9:37 | — | — | 9:35 | — | — | 9:32 | — | — | 9:31 | — | — | 9:30 | — | — | 9:29 | — | — | 9:27 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 21 | 23 | 19 | 23 | 25 | 21 | 29 | 30 | 25 | 27 | 27 | 24 | 26 | 28 | 20 | 23 | 25 |
Feels °C | 18 | 19 | 19 | 19 | 17 | 19 | 21 | 17 | 27 | 27 | 24 | 26 | 24 | 22 | 21 | 23 | 19 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 9 | WNW 9 | WSW 7 | WSW 7 | WNW 9 | WNW 5 | WNW 8 | WNW 8 | WNW 7 | W 10 | W 10 | W 9 | W 10 | W 11 | W 10 | W 10 | W 9 | WNW 6 |
| kJ | 38 | 35 | 32 | 27 | 19 | 30 | 8 | 26 | 26 | 11 | 100 | 121 | 134 | 143 | 229 | 194 | 115 | 79 | 37 |
Swell 2 Height (m) Direction Period (s) | W 7 | WSW 6 | W 9 | WNW 9 | WNW 9 | WSW 7 | WNW 8 | WSW 6 | E 3 | W 12 | SW 6 | SW 6 | — | WNW 12 | — | — | — | — | W 9 |
| kJ | 4 | 4 | 2 | 31 | 32 | 19 | 28 | 4 | 1 | 25 | 1 | 1 | — | 29 | — | — | — | — | 54 |
Swell 3 Height (m) Direction Period (s) | — | W 8 | W 9 | WSW 7 | WNW 3 | — | SW 7 | WNW 10 | WSW 6 | W 9 | SW 6 | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 2 | 27 | 1 | — | 12 | 10 | 4 | 6 | 1 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 2 | NW 3 | W 3 | NW 5 | NNE 2 | WNW 2 | NE 3 | ENE 4 | — | NW 3 | E 3 | — | WNW 3 | — | WNW 3 | NW 5 | NW 4 | WNW 4 | NNE 3 |
| kJ | 1 | 3 | 4 | 25 | 1 | 1 | 9 | 8 | — | 3 | 1 | — | 1 | — | 1 | 29 | 9 | 8 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 90 | 90 | 436 | 29 | 90 | 160 | 101 | 119 | 435 | 90 | 0 | 101 | 36 | 90 | 158 | 36 | 31 | 158 | 44 |
Best forecast wave conditions in Morbihan - Brittany | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
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Information about the Belle Ile Surf forecast
The above surf forecast table for Belle Ile 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 can be found by selecting the local surf guide option on the grey menu. Our Belle Ile 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) 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 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 is 48 km (30 miles) from the city of Ploemeur. If you plan a holiday in Morbihan - Brittany, look for hotels and other accommodation in Ploemeur. Ploemeur has rooms for a wide range of budgets as well as car hire and transport links.
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