Surf Forecasts:
Belle Ile surf forecast from 30 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 5AM (local time) - 5ft (1.6m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 8AM (local time) - 8ft (2.5m), 10s period, W swell with 1,273 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 5AM (local time) - 5ft (1.6m), 10s period with W 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 Tuesday (Sep 01) at 5AM. The primary swell is predicted to be 1.6m and 10s period. 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 2.5m 10s and forecast to arrive on Monday (Aug 31) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Sep 06) at 8AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 1st Sep) | 5ft (1.6m) 10s |
| Best Surf | 5AM (Tue 1st Sep) | 5ft (1.6m) 10s |
| Most Powerful | 8AM (Mon 31st Aug) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Belle Ile over the next 16 days.
The Lowdown
Alright, let’s break it down. The start of the period is grim. Onshore winds and lumpy sea state are throwing everything off for days. There’s a real dry spell before anything decent pops up. First real chance doesn’t come until Tuesday, September 1st.
Tuesday morning gives a small window at Belle Ile. You’ve got a clean 5ft W swell, around 10 seconds between waves, and a light cross-off breeze from the NE. Wave energy comes in moderate at 313. It’s not big, but it’s clean and surfable. That’s the first chance to get out there.
The clear winner is Saturday, September 5th. That morning at Belle Ile, expect a solid 5ft W-NW groundswell with an 11-second period, and a light cross-off wind from the NNE. Water temp sits near 67°, about normal for the season. The combined energy is strong at 553. Lines will be clean and well-shaped. That’s the highlight of the whole 16-day run. After that, things drop off fast – small swell and less favorable winds take over the following week.
All in all, you’ve got one solid morning on Saturday the 5th, and a backup on Tuesday the 1st. The rest is mostly small, weak, or blown out. Saturday’s the one to circle.
- Rusty
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Very mild (max 19°C on Sun afternoon, min 15°C on Tue morning). Winds decreasing (strong winds from the WSW on Sun night, calm by Tue afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Fri night, min 17°C on Wed afternoon). Wind will be generally light. | |||||||||||||||||||
Sun 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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) | WSW 8 | W 9 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | WNW 8 | WNW 8 | W 8 | WNW 8 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 509 | 1033 | 1107 | 867 | 573 | 306 | 165 | 99 | 48 | 33 | 85 | 147 | 134 | 144 | 505 | 439 | 512 | 431 | 346 | 218 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross | off | on | cross | glassy | on | on | on | on | cross-on | cross-on | on | on | cross | on | cross-off |
High Tide | 6:53PM4.36m | 7:10AM4.16m | 7:26PM4.29m | 7:44AM4.09m | 8:01PM4.13m | 8:21AM3.94m | 8:41PM3.88m | 9:03AM3.71m | 9:30PM3.56m | 9:58AM3.44m | 10:37PM3.24m | 11:18AM3.21m | 00:24AM3.05m | |||||||
Low Tide | 1:12AM0.09m | 1:25PM0.17m | 1:47AM0.19m | 2:02PM0.30m | 2:25AM0.39m | 2:44PM0.51m | 3:09AM0.65m | 3:34PM0.77m | 4:03AM0.96m | 4:39PM1.03m | 5:14AM1.21m | 6:02PM1.18m | ||||||||
 |  |  | |  |  | | | | | | | | | | | |  | | | |
 | — | — | 7:28 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — |
 | 8:58 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 18 | 18 | 18 | 15 | 17 | 17 | 16 | 17 | 18 | 18 | 19 | 19 | 18 | 19 | 21 | 19 | 19 | 20 |
Feels °C | 14 | 13 | 13 | 14 | 13 | 14 | 15 | 14 | 16 | 16 | 16 | 18 | 19 | 18 | 18 | 18 | 20 | 18 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | — | — | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | WNW 8 | WNW 8 | W 8 | WNW 8 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 |
| kJ | — | — | 1107 | 867 | 573 | 306 | 165 | 99 | 48 | 33 | 85 | 147 | 134 | 144 | 505 | 439 | 512 | 431 | 346 | 218 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NNW 3 | — | — | — | — | WNW 14 | — | — | WNW 15 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 41 | — | — | 43 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 8 | W 9 | — | — | — | — | — | NW 3 | — | — | WNW 3 | — | — | — | — | — | — | — | — | — |
| kJ | 509 | 1033 | — | — | — | — | — | 3 | — | — | 1 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 259 | 426 | 93 | 93 | 21 | 0 | 90 | 29 | 117 | 435 | 90 | 90 | 90 | 36 | 36 | 148 | 44 | 21 | 90 | 29 |
Best forecast wave conditions in Morbihan - Brittany | ||||||||||||||||||||
Best forecast wave conditions in France | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Belle Ile surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest