Surf Forecasts:
Belle Ile surf forecast from 10 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, 11PM (local time) - 4.5ft (1.4m), 9s period, WNW swell with 318 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 0.5m and 7s. 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 1.4m 9s and forecast to arrive on Friday (Aug 14) at 11PM. 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 Sunday (Aug 16) at 2AM.
| 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 | 11PM (Fri 14th Aug) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for Belle Ile over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk Belle Ile surf for the next couple of weeks.
First off, we’ve got a slow start. Monday the 10th and Tuesday the 11th are flat – 1ft swell, messy wind, and weak energy (52). Don’t even bother. The water temp is about normal for the season, nothing unusual.
Wednesday morning the 12th shows some life: 2ft west swell, 10-second period, with glassy wind. The energy is moderate (102), but it’s just surfable – very ordinary. Thursday the 13th morning brings 3ft west swell, 10-second period, with light cross-onshore wind and moderate energy (201). Still only marginal.
Friday the 14th through Sunday the 16th, the swell stays between 3ft and 4ft from the west-northwest, but the wind is onshore and fresh, making things choppy and poor. The energy hits 317 on Friday afternoon, but with a fresh breeze at 19 mph and onshore wind, it’s a mess. Better for kiteboarding than paddle surfing.
Here’s the one day worth getting excited about: Wednesday morning the 19th of August. A 3ft west-northwest swell, 8-second period, with a clean offshore wind from the east-northeast at 13 mph. The energy is moderate (133), and the conditions are clean with moderate offshore wind. Belle Ile is a beginner-friendly spot, and that offshore breeze will make it glassy and fun. This is the standout – not huge, but clean.
After that, the second week fades. A few clean moments on the 20th and 22nd, but the swell is tiny (2ft to 3ft) and the energy is weak. From the 23rd onward, it’s flat, with swell dropping to 1ft and 2ft. A dry spell for the area, but that’s normal.
Best call: Wednesday the 19th. Clean, offshore, and surfable.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Tue afternoon, min 17°C on Mon morning). Winds decreasing (fresh winds from the WNW on Sun night, calm by Wed morning). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 30°C on Thu night, min 17°C on Sat morning). Winds increasing (light winds from the NW on Thu morning, fresh winds from the NW by Fri night). | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 9 | 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 | WNW 9 | NW 6 | WNW 8 | WNW 8 | WNW 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 31 | 32 | 30 | 28 | 26 | 26 | 25 | 100 | 94 | 111 | 151 | 229 | 194 | 115 | 211 | 76 | 119 | 87 | 89 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | on | cross-off | off | on | cross-off | glassy | on | cross-on | cross-on | on | cross | cross-on | on | cross | cross | on | cross-off |
High Tide | 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 | 7:11AM4.23m | 7:27PM4.47m | |||||||
Low Tide | 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 | 1:14PM-0.03m | 1:41AM-0.02m | ||||||
 | | |  | | | | | | | | | | |  | | |  |  | |
 | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — |
 | 9:35 | — | — | 9:32 | — | — | 9:31 | — | — | 9:30 | — | — | 9:29 | — | — | 9:27 | — | — | 9:24 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — |
Temp °C | 23 | 18 | 22 | 25 | 22 | 28 | 28 | 26 | 28 | 29 | 27 | 29 | 30 | 22 | 27 | 28 | 18 | 21 | 24 |
Feels °C | 19 | 18 | 21 | 20 | 18 | 25 | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 21 | 23 | 23 | 17 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | WSW 7 | WNW 9 | WNW 4 | WNW 8 | WNW 8 | WNW 8 | W 10 | W 10 | W 9 | W 10 | W 11 | W 10 | W 10 | W 9 | W 9 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 19 | 19 | 30 | 8 | 26 | 26 | 11 | 100 | 94 | 111 | 151 | 229 | 194 | 115 | 106 | 76 | 119 | 87 | 89 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WSW 7 | WNW 8 | WSW 6 | E 3 | W 12 | SW 6 | SW 6 | W 5 | WNW 12 | — | — | — | — | W 9 | — | NNE 3 | W 8 |
| kJ | 31 | 32 | 19 | 28 | 4 | 1 | 25 | 1 | 1 | 1 | 49 | — | — | — | — | 74 | — | 1 | 12 |
Swell 3 Height (m) Direction Period (s) | WSW 7 | — | — | SW 7 | WNW 10 | WSW 6 | WNW 3 | SW 6 | — | — | WNW 3 | — | — | — | — | — | — | — | — |
| kJ | 28 | — | — | 12 | 10 | 4 | 1 | 1 | — | — | 1 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 4 | NNW 3 | — | NE 3 | ENE 4 | — | — | — | — | NW 3 | — | WNW 3 | NW 5 | NW 4 | WNW 9 | NW 6 | N 4 | — | NNE 4 |
| kJ | 14 | 1 | — | 5 | 7 | — | — | — | — | 4 | — | 4 | 31 | 12 | 211 | 75 | 9 | — | 16 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 90 | 1 | 160 | 101 | 119 | 436 | 50 | 0 | 90 | 29 | 44 | 158 | 36 | 29 | 158 | 44 | 29 | 90 | 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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