Surf Forecasts:
Belle Ile surf forecast from 11 Sep 2026:
- Best quality surf: Sunday 13 Sep, 8AM (local time) - 3.5ft (1.1m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 8PM (local time) - 6ft (1.9m), 10s period, WNW swell with 671 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 8AM (local time) - 3ft (0.9m), 8s 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 Saturday (Sep 12) at 8AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.1m and 18s. 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 1.9m 10s and forecast to arrive on Wednesday (Sep 16) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Sep 12) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 12th Sep) | 3ft (0.9m) 8s |
| Best Surf | 8AM (Sun 13th Sep) | 3.5ft (1.1m) 10s |
| Most Powerful | 8PM (Wed 16th Sep) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for Belle Ile over the next 16 days.
The Lowdown
Alright folks, Rusty here.
We’ve got a bit of a slow start on our hands for Belle Ile. The next few days are pretty grim, with the wind and swell not lining up at all. From Friday the 11th into the middle of next week, it’s mostly messy or onshore junk. You’d be wasting your time paddling out. The combined energy is weak to moderate at best.
Things start to look a little more interesting around Monday the 14th. We’ll see a small 3 to 3 ft swell from the west, but the wind finally turns offshore from the east. That’ll put a bit of a clean face on it. It’s still small, but it’s ridable – a proper longboard morning. Not a standout, but a chance to get wet without getting thrashed.
Now, hold onto your wetties, because the real action is a week out. Sunday the 20th of September is the one to circle. We’ve got a solid 7 ft groundswell from the WNW with a very long period of 16 seconds. The combined wave energy is pumping with a massive reading of 1962, which is a serious amount of power. The morning looks magic with a gentle offshore breeze from the ESE. This is a legitimately excellent, powerful swell for experienced surfers. It’s going to be big and clean, a proper session for those who know what they’re doing.
The swell hangs in there into Monday the 21st but gets chopped up by strong cross-offshore winds. Then we drop off again for a few days before another pulse of moderate energy rolls in on Saturday the 26th. It’ll be 6 to 7 ft with a long period, but it’s a bit more uncertain that far out. The morning of the 26th looks okay with a clean cross-offshore breeze, and the afternoon could be very clean if the wind stays light.
So to keep it simple: the 20th is your standout. If you’re an experienced surfer chasing a proper groundswell, that’s your window. The 14th and 19th offer smaller, cleaner windows for the longboard crew. The rest is a waiting game.
Catch you in the water.
- Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Sun night, min 16°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Mon night, min 14°C on Wed night). Winds increasing (calm on Mon night, strong winds from the WNW by Tue afternoon). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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) | WNW 10 | W 9 | W 8 | W 8 | WNW 8 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | W 9 | W 9 | W 9 | WNW 6 | WNW 8 | WNW 8 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 335 | 240 | 147 | 103 | 112 | 160 | 297 | 292 | 218 | 150 | 106 | 79 | 119 | 254 | 344 | 300 | 587 | 460 | 339 | 209 | 126 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-off | cross-off | cross-on | cross | cross | on | cross-off | off | cross-off | cross-off | on | cross-on | cross-on | cross-on | on | cross-on | cross | on | cross-off |
High Tide | 5:49PM4.55m | 6:09AM4.31m | 6:23PM4.52m | 6:41AM4.28m | 6:55PM4.39m | 7:11AM4.18m | 7:26PM4.16m | 7:40AM4.00m | 7:56PM3.87m | 8:10AM3.76m | 8:27PM3.55m | 8:42AM3.48m | 9:02PM3.22m | ||||||||
Low Tide | 11:30AM-0.02m | 11:56PM-0.16m | 12:09PM-0.09m | 00:32AM-0.12m | 12:46PM-0.04m | 1:08AM0.03m | 1:23PM0.13m | 1:43AM0.28m | 2:00PM0.38m | 2:18AM0.60m | 2:39PM0.70m | 2:56AM0.94m | 3:22PM1.05m | 3:41AM1.28m | |||||||
 | |  |  | | | | | | | | | | | | | | | | | | |
 | 7:43 | — | — | 7:45 | — | — | 7:46 | — | — | 7:48 | — | — | 7:48 | — | — | 7:50 | — | — | 7:52 | — | — |
 | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 20 | 16 | 18 | 19 | 18 | 20 | 22 | 19 | 23 | 26 | 20 | 19 | 18 | 16 | 18 | 18 | 14 | 15 | 17 |
Feels °C | 16 | 17 | 17 | 14 | 19 | 17 | 17 | 17 | 20 | 18 | 23 | 26 | 18 | 14 | 11 | 11 | 11 | 11 | 12 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | W 9 | W 8 | W 8 | WNW 8 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | W 9 | W 9 | WNW 12 | — | W 10 | WNW 8 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 |
| kJ | 335 | 240 | 147 | 103 | 112 | 160 | 297 | 292 | 218 | 150 | 106 | 79 | 14 | — | 77 | 300 | 587 | 460 | 339 | 209 | 126 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 17 | WNW 15 | WNW 13 | — | — | NW 3 | WNW 11 | NW 10 | NW 10 | NW 9 | — | — | WNW 10 | — | — | — | — | W 17 |
| kJ | — | — | — | 6 | 44 | 67 | — | — | 4 | 11 | 23 | 4 | 3 | — | — | 108 | — | — | — | — | 24 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | WNW 15 | — | — | — | — | — | ESE 3 | W 14 | WNW 9 | — | — | — | — | — | — | — | WNW 17 |
| kJ | — | — | — | — | 44 | — | — | — | — | — | 1 | 4 | 8 | — | — | — | — | — | — | — | 30 |
Wind waves Height (m) Direction Period (s) | — | — | — | ENE 3 | — | — | — | — | — | E 3 | — | — | W 9 | WNW 6 | WNW 8 | — | — | NNE 3 | — | — | NW 2 |
| kJ | — | — | — | 2 | — | — | — | — | — | 1 | — | — | 119 | 254 | 344 | — | — | 2 | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 44 | 157 | 29 | 0 | 93 | 21 | 21 | 82 | 21 | 0 | 0 | 0 | 242 | 457 | 45 | 44 | 430 | 44 | 29 | 118 | 21 |
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