Surf Forecasts:
Belle Ile surf forecast from 7 Aug 2026:
- Best quality surf: Monday 10 Aug, 5AM (local time) - 1.5ft (0.4m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 2AM (local time) - 3.5ft (1.1m), 10s period, W swell with 240 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 5AM (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 5AM. 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 0.5m 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 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 08) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 10th Aug) | 1.5ft (0.4m) 9s |
| Best Surf | 5AM (Mon 10th Aug) | 1.5ft (0.4m) 9s |
| Most Powerful | 2AM (Fri 14th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Belle Ile over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ for Belle Ile over the next couple of weeks.
Right off the bat, I gotta be straight with you – the first week or so is pretty grim. We’ve got a lot of tiny, weak swell and the wind is all over the shop. The best thing to do is sit tight. The first real glimmer of something worth paddling out for doesn’t show up until the morning of Wednesday the 12th of August. Even then, it’s only 2ft from the west, with a period of 10 seconds, and the combined energy is just 81 – weak. The wind is offshore from the ESE though, so it’ll be clean. It’s a “beginner” spot, so if you’re learning, that’s your window. The afternoon gets choppy again, so make it a morning mission.
The swell builds a little through the end of the week, but it’s all onshore or cross-shore wind, so the quality is rubbish. We see some energy climbing to 152 and 173 on Friday the 14th, but it’s blown out. That’s a no-go.
Then things get interesting. The standout period is the end of the forecast. Mark your calendars for Thursday the 20th of August. The morning is a bit fresh with a 22 mph offshore from the ENE, but the swell is a solid 4.3ft out of the WNW with a short period of 8 seconds. The combined energy is 221 – moderate. But the real gem is the afternoon. The wind switches to a light breeze from the east, still offshore, and the swell holds at 4.3ft from the WNW. It’s clean, and the energy jumps to 239. That’s your best bet for a decent session.
The next day, Friday the 21st of August, is also worth a look. The morning has a stiff 19 mph offshore from the ENE, but it’s a strong 4.6ft from the WNW (322 energy). The afternoon is where it could be magic – absolutely glassy, with the wind going dead calm (0 mph from the NNE). The swell is still 4.3ft, but the energy is pumping at 444 (moderate to strong). That’s a real chance for some clean, lined-up waves, even if the period is a bit short at 9 seconds. The offshore direction is a good match for the optimum SW direction, so it’ll be breaking well.
Water temp is about average for the time of year, no major anomalies to report.
So, to sum it up: the first week is a washout. Don’t bother. The best on offer is the afternoon of Thursday the 20th and the glassy afternoon of Friday the 21st. The 21st is the true standout with that flat calm wind. Get out there and enjoy it.
Short Range ForecastMostly dry. Warm (max 24°C on Sun night, min 17°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Thu afternoon, min 20°C on Tue morning). Wind will be generally light. | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 | WNW 11 | WNW 10 | WNW 9 | WNW 9 | NW 5 | WNW 9 | WNW 9 | WNW 8 | NW 8 | WNW 8 | W 12 | W 10 | W 10 | W 9 | W 9 | W 9 | W 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 7 | 7 | 12 | 38 | 35 | 32 | 31 | 32 | 30 | 27 | 17 | 26 | 12 | 80 | 94 | 103 | 103 | 110 | 240 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-on | on | glassy | on | cross | cross-off | on | cross-off | off | cross-on | glassy | off | cross-on | cross-on | cross-on | on | cross |
High Tide | 00:22AM3.23m | 1:10PM3.29m | 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 | |||||||
Low Tide | 6:52AM1.14m | 7:35PM1.04m | 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 | |||||||
 |  |  |  | | | | | | | | | | | | | | | | |
 | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — |
 | 9:37 | — | — | 9:37 | — | — | 9:35 | — | — | 9:32 | — | — | 9:31 | — | — | 9:30 | — | — | 9:29 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 22 | 22 | 20 | 21 | 24 | 20 | 24 | 26 | 22 | 26 | 27 | 24 | 25 | 27 | 23 | 29 | 32 |
Feels °C | 17 | 15 | 18 | 18 | 19 | 19 | 20 | 18 | 22 | 21 | 18 | 23 | 28 | 18 | 21 | 23 | 20 | 24 | 27 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | WNW 11 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 4 | NW 8 | WNW 8 | WNW 7 | W 10 | W 10 | W 9 | W 9 | W 9 | W 10 |
| kJ | 7 | 7 | 12 | 38 | 35 | 32 | 31 | 32 | 30 | 8 | 17 | 26 | 11 | 80 | 94 | 103 | 103 | 110 | 240 |
Swell 2 Height (m) Direction Period (s) | WNW 6 | NW 6 | ESE 3 | W 7 | WSW 6 | W 9 | WSW 7 | WSW 7 | WSW 7 | WNW 8 | WSW 7 | WSW 6 | W 9 | SW 6 | SW 6 | WNW 4 | NW 4 | WNW 12 | WNW 10 |
| kJ | 3 | 1 | 1 | 4 | 4 | 2 | 16 | 19 | 19 | 27 | 4 | 4 | 7 | 1 | 1 | 10 | 4 | 26 | 80 |
Swell 3 Height (m) Direction Period (s) | — | W 7 | W 9 | — | W 8 | — | WNW 9 | WNW 4 | — | WSW 7 | W 10 | W 10 | W 12 | — | — | — | W 12 | — | — |
| kJ | — | 1 | 6 | — | 1 | — | 16 | 1 | — | 9 | 8 | 8 | 12 | — | — | — | 3 | — | — |
Wind waves Height (m) Direction Period (s) | NE 4 | E 4 | — | NW 2 | NW 3 | W 6 | NW 5 | NNW 3 | WNW 3 | NE 4 | E 4 | ESE 3 | — | — | W 6 | — | — | NW 3 | NNE 3 |
| kJ | 12 | 6 | — | 1 | 2 | 12 | 25 | 2 | 3 | 15 | 21 | 2 | — | — | 1 | — | — | 2 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 727 | 139 | 101 | 90 | 90 | 524 | 90 | 1 | 90 | 101 | 119 | 436 | 101 | 0 | 221 | 29 | 31 | 324 | 31 |
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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