Belle Ile - Les Donnants Surf Forecast and Surf Report

Alright, Rusty here. Let’s have a look at what’s cookin’ at Belle Ile - Les Donnants.

First up, for the next week or so, it’s a bit of a rough patch. We’ve got a lot of onshore and cross-onshore winds messing with what little swell is around. The water temp is sitting at 19°, which is pretty much what you’d expect for this time of year.

Right now, on Friday the 28th, we’re looking at a weak 2ft swell from the west, but a 12 mph cross-offshore wind is making it a write-off. The wave energy is weak at 122, and the conditions are just poor. Friday afternoon doesn’t get any better with a stronger 16 mph cross-onshore.

Saturday the 29th is a no-go. A big 8ft west-southwest swell rolls in, but with 31 mph winds, it’s pure mayhem – blown out and dangerous. That’s expert-only territory if you’re insane, but honestly, it’s a kite-surfing day.

Sunday the 30th stays messy with 5ft to 6ft swell and cross-onshore winds. Not worth paddling out.

Monday the 31st has a solid 7ft west swell, but it’s still onshore. The wave energy is moderate at 838, but the wind kills it. Not for the average surfer.

Now, here’s a little glimmer – Tuesday morning, September 1st. The swell drops to 4ft from the west-northwest (276 combined energy), but the key is the wind: a light 6 mph cross-offshore from the east-northeast. That means clean conditions. It’s a river break, consistent, and exposed to the swell. This is the best on offer in the whole outlook. The swell direction (WNW) is a touch off the optimum (SW), but it’s the only window where the wind cooperates for a decent surf. Keep in mind, this place gets crowded often, so get there early. After that, it’s back to the doldrums.

From Tuesday afternoon through to late in the window, it’s a long stretch of poor surf. Swell sizes drop to tiny 1ft to 3ft for days, with a mix of onshore and cross-onshore winds. There’s a long-period 14-second swell on Friday, September 4th, pushing 3ft (358 energy), but again, onshore wind makes it a nothing-burger. The 5ft on Friday afternoon (681 energy) might have some punch, but without clean wind, it’s not worth the drive.

Saturday, September 5th sees a marginal morning: 4ft from the WNW, period 12 seconds (452 energy), with almost no wind (3 mph). It’s a light cross-onshore, but could be surfable for someone hungry. The long period means better shape at this river break, but also longer waits between sets.

Sunday, September 6th morning has a clean 3ft from the WNW (161 energy) with a cross-offshore breeze. Tiny but rideable, if you’re desperate.

After that, it’s mostly flat or blown out until Thursday, September 10th, when a 6ft swell (601 energy) shows up, but with 22 mph winds – another stormy mess.

The standout? Tuesday morning, September 1st. That’s your window for a clean, rideable session on a river break that’s usually fun. The rest is a waiting game.

Rusty.

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