Surf Forecasts:
Belle Ile surf forecast from 17 Jul 2026:
- Most powerful swell: Saturday 18 Jul, 5PM (local time) - 1.5ft (0.5m), 9s period, WNW swell with 42 kJ wave energy.
Best Forecast Surf Conditions for Belle Ile this week:
The most powerful waves expected at Belle Ile in the next 16 days are 0.5m 9s and forecast to arrive on Saturday (Jul 18) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Tuesday (Jul 21) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Sat 18th Jul) | 1.5ft (0.5m) 9s |
Table - best surf conditions forecast for Belle Ile over the next 16 days.
The Lowdown
Alright, Rusty here. Let's be straight with you. We’ve got a long, flat spell on the cards for Belle Ile. Don't even bother waxing up for the first week and a half. The outlook is grim, with nothing but knee-high dribble and crap wind. The water temp is about average for this time of year, nothing special.
The first half of the run is a total write-off. From Friday the 17th right through to the end of July, it’s all poor surf conditions. Swell barely tickles 2 feet, and the wind is all over the shop – onshore, cross, cross-on. It’s a mess.
There’s a glimmer of hope on Monday the 27th of July. The morning brings a glassy dawn with an easterly breeze. The swell is a meager 2 feet from the WNW, but with a period of 10 seconds, it’s got a bit of shape. The combined energy is weak (89), but for a beginner break, it’s the only window that’s not completely hopeless. It’s surfable, but just barely.
Then on Tuesday the 28th of July, the morning gets a bit of an offshore wind from the east. The swell bumps up to 2 feet from the WNW, with a 9-second period. The energy is moderate (116), and the conditions are clean. It’s still small, but it’s the best we’re going to get. For a beginner-friendly spot like Belle Ile, this is the one to target if you’re desperate. Expect crowds, because it’s the only game in town.
After that, the wind swings back onshore and the swell gets a bit bigger (over 3 feet) but turns into a choppy, blown-out mess, especially on the 29th and 31st of July. The energy gets up to moderate (262), but with cross-onshore winds, it’s just a messy, ugly wave. Not worth the paddle.
Bottom line: two mornings at the end of the month – the 27th and 28th of July – are your only real shots. The rest is a barren, blown-out wasteland.
- Rusty
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 29°C on Sun afternoon, min 18°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the NNE by Sat night). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sun night, min 17°C on Sun night). Winds decreasing (strong winds from the NE on Sun night, light winds from the SE by Tue afternoon). | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||
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 4 | W 8 | W 8 | W 8 | W 8 | WNW 9 | WNW 5 | WNW 8 | NW 7 | W 10 | W 9 | W 12 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | W 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 22 | 13 | 12 | 12 | 12 | 42 | 14 | 23 | 9 | 2 | 6 | 11 | 12 | 22 | 20 | 19 | 19 | 18 | 16 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | on | cross-off | cross | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | on | cross-off | cross-off | on | cross |
High Tide | 7:36AM4.11m | 7:54PM4.43m | 8:20AM3.96m | 8:38PM4.21m | 9:03AM3.76m | 9:21PM3.92m | 9:46AM3.53m | 10:06PM3.59m | 10:33AM3.31m | 10:56PM3.29m | 11:29AM3.12m | 00:00AM3.04m | |||||||
Low Tide | 1:25AM-0.09m | 1:39PM0.09m | 2:11AM0.04m | 2:24PM0.24m | 2:56AM0.26m | 3:10PM0.47m | 3:42AM0.54m | 3:58PM0.74m | 4:29AM0.83m | 4:50PM1.01m | 5:21AM1.10m | 5:49PM1.23m | |||||||
 |  |  |  | | | | | | | | | | | | | |  | | |
 | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — |
 | 10:05 | — | — | 10:04 | — | — | 10:02 | — | — | 10:01 | — | — | 10:00 | — | — | 10:00 | — | — | 9:59 |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 19 | 22 | 24 | 20 | 23 | 26 | 21 | 29 | 27 | 19 | 26 | 25 | 19 | 24 | 24 | 19 | 22 | 23 |
Feels °C | 21 | 19 | 19 | 21 | 19 | 20 | 19 | 16 | 26 | 20 | 11 | 21 | 16 | 15 | 20 | 18 | 16 | 17 | 21 |
Swell 1 Height (m) Direction Period (s) | WSW 5 | WSW 6 | W 8 | W 8 | W 8 | — | WNW 5 | WNW 8 | NW 7 | W 7 | W 9 | ESE 4 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NW 4 |
| kJ | 13 | 6 | 12 | 12 | 12 | — | 14 | 23 | 9 | 1 | 6 | 3 | 12 | 22 | 20 | 19 | 19 | 18 | 4 |
Swell 2 Height (m) Direction Period (s) | NW 4 | W 8 | — | WNW 3 | NW 4 | E 3 | WNW 8 | W 11 | W 8 | NW 7 | W 12 | ESE 5 | NW 6 | W 8 | E 4 | — | NW 5 | SE 4 | W 10 |
| kJ | 4 | 13 | — | 1 | 1 | 1 | 13 | 2 | 4 | 2 | 3 | 2 | 1 | 1 | 3 | — | 1 | 3 | 16 |
Swell 3 Height (m) Direction Period (s) | W 9 | NNW 4 | — | SW 5 | SW 5 | NW 10 | NW 9 | W 11 | W 11 | W 10 | NW 7 | W 12 | W 8 | NW 5 | ESE 4 | — | — | NNE 3 | NW 6 |
| kJ | 14 | 1 | — | 1 | 1 | 4 | 3 | 2 | 2 | 2 | 2 | 11 | 1 | 1 | 2 | — | — | 1 | 1 |
Wind waves Height (m) Direction Period (s) | W 4 | — | WSW 5 | — | ENE 3 | WNW 9 | NNE 4 | ENE 4 | E 4 | NE 5 | ENE 5 | NE 3 | NE 5 | ENE 5 | NE 3 | NE 5 | ENE 4 | — | NNE 4 |
| kJ | 22 | — | 5 | — | 2 | 42 | 8 | 31 | 7 | 60 | 48 | 3 | 54 | 45 | 3 | 73 | 25 | — | 11 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 617 | 617 | 1226 | 742 | 737 | 865 | 101 | 468 | 347 | 377 | 435 | 377 | 139 | 356 | 347 | 377 | 436 | 435 |
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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