Surf Forecasts:
Belle Ile surf forecast from 2 Sep 2026:
- Best quality surf: Saturday 5 Sep, 2PM (local time) - 4.5ft (1.3m), 13s period, WNW swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 8PM (local time) - 6.5ft (2.0m), 11s period, W swell with 976 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 11AM (local time) - 4.5ft (1.3m), 12s 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 Saturday (Sep 05) at 11AM. The primary swell is predicted to be 1.3m and 12s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Belle Ile in the next 16 days are 2.0m 11s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Sep 06) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sat 5th Sep) | 4.5ft (1.3m) 12s |
| Best Surf | 2PM (Sat 5th Sep) | 4.5ft (1.3m) 13s |
| Most Powerful | 8PM (Mon 7th Sep) | 6.5ft (2.0m) 11s |
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 Belle Ile’s got cooking for us over the next couple of weeks.
Right off the bat, it’s a tough start. The first few days are a write-off with poor surf conditions, so don’t even bother looking at the water until we get to Saturday the 5th of September. That’s when things finally turn on.
Saturday the 5th is the clear standout. We’ve got a nice pulse of groundswell rolling in from the WNW at 4ft, with a very long 12-second period. That’s proper energy, pumping into the exposed SW-facing breaks with a combined energy of 429 to 444. The morning looks prime with a clean, moderate offshore wind from the ENE, and then it goes absolutely glassy in the afternoon with barely a breath of wind from the WSW. This is the session to circle. Belle Ile is a beginner-friendly spot and fairly consistent, but with this quality of conditions, it’s going to be a treat for everyone. The water temp is sitting at 67°, which is just about normal for this time of year, so you’re not needing a thick suit just yet.
Sunday the 6th is a step down but still worth a paddle. The swell drops back to 2ft in the morning, still a nice 10-second period from the WNW (energy around 174). The wind stays offshore from the E, so it’ll be clean. The afternoon gets smaller and pretty average, so make the most of the morning.
Then we hit a rough patch again. From Monday the 7th right through to the middle of the second week, it’s a long stretch of poor surf conditions. The swell gets bumpy, the wind is onshore and nasty, or it’s just too messy. You’ll see a bit of size on the 7th and 8th with 5ft to 6ft and lots of energy (up to 1774), but it’s blown out and won’t be any fun for paddling.
There’s a flicker of hope on Monday the 14th of September with a morning session showing a clean 4ft groundswell from the WNW (12-second period, energy of 470) and light cross-onshore winds. It’s listed as marginal though, so don’t get your hopes up too high. The 15th and 16th have some cleanish moments, but the swell is tiny.
The best bet for the second week looks like Thursday the 17th of September. A tiny 1ft groundswell but with a clean morning offshore from the ENE. It’s small, but for a quiet, clean paddle on the log it could be alright.
Honestly, if you can only surf one day, make it Saturday the 5th of September. That’s the winner.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Fri night, min 15°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Tue morning. Warm (max 25°C on Sun afternoon, min 16°C on Tue morning). Mainly fresh winds. | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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) | W 8 | W 8 | W 8 | W 8 | WNW 8 | W 9 | W 8 | WNW 9 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | WNW 10 | W 5 | W 13 | W 12 | W 11 | W 10 | W 9 | WNW 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 33 | 142 | 138 | 117 | 107 | 151 | 147 | 294 | 429 | 444 | 259 | 102 | 38 | 58 | 336 | 972 | 730 | 414 | 405 | 505 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-off | off | glassy | off | off | cross-off | on | on | on | on | cross-on | on | cross-on |
High Tide | 8:41PM3.88m | 9:03AM3.71m | 9:30PM3.56m | 9:58AM3.44m | 10:37PM3.24m | 11:18AM3.21m | 00:24AM3.05m | 1:15PM3.22m | 2:15AM3.19m | 2:44PM3.51m | 3:24AM3.49m | 3:44PM3.88m | 4:15AM3.81m | |||||||
Low Tide | 2:44PM0.51m | 3:09AM0.65m | 3:34PM0.77m | 4:03AM0.96m | 4:39PM1.03m | 5:14AM1.21m | 6:02PM1.18m | 6:41AM1.29m | 7:33PM1.10m | 8:05AM1.12m | 8:49PM0.81m | 9:11AM0.80m | 9:47PM0.46m | |||||||
 |  |  | | | | | | | |  | | | | | | |  | | | |
 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:37 | — | — | 7:39 | — | — |
 | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 18 | 18 | 19 | 19 | 19 | 19 | 20 | 21 | 15 | 21 | 24 | 22 | 25 | 21 | 18 | 18 | 18 | 17 | 17 | 17 |
Feels °C | 15 | 16 | 18 | 18 | 19 | 18 | 20 | 20 | 12 | 19 | 21 | 18 | 23 | 20 | 15 | 15 | 14 | 14 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 8 | WNW 8 | W 9 | W 8 | WNW 9 | WNW 12 | WNW 12 | WNW 11 | SE 5 | WNW 10 | W 9 | W 13 | W 12 | W 11 | W 10 | W 9 | WSW 9 |
| kJ | 33 | 142 | 138 | 117 | 107 | 151 | 147 | 294 | 429 | 444 | 259 | 31 | 38 | 24 | 336 | 972 | 730 | 414 | 405 | 25 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 14 | — | — | — | WNW 10 | W 9 | WNW 9 | — | — | — | WNW 9 | WNW 12 | — |
| kJ | — | — | — | — | — | — | — | 37 | — | — | — | 102 | 26 | 8 | — | — | — | 168 | 103 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 9 | SE 4 | SE 4 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 41 | 10 | 1 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 3 | — | — | — | — | — | — | — | ENE 3 | — | E 4 | — | SW 3 | W 5 | W 6 | W 12 | — | — | — | WNW 11 |
| kJ | 3 | — | — | — | — | — | — | — | 2 | — | 12 | — | 2 | 58 | 113 | 802 | — | — | — | 505 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 101 | 101 | 101 | 101 | 101 | 126 | 153 | 29 | 0 | 0 | 53 | 0 | 0 | 356 | 339 | 202 | 131 | 36 | 202 | 158 |
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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