Molhes de Mampituba Surf Forecast and Surf Report

G’day, Rusty here, and I’ve been looking over the Mampituba stretch for the next couple of weeks. Let’s be honest, it’s a bit of a mixed bag, but there are a few windows where it’ll be worth paddling out.

The standout session looks like Sunday morning, August 23rd at Molhes de Mampituba. We’ve got a solid 6ft swell rolling in from the south with a 12-second period. That’s a nice, powerful groundswell with good energy behind it (1011). The wind’s coming light from the WSW at 6 mph, putting it cross-offshore, so the faces will be clean. It’s going to be a proper session for the more experienced crew out there – the river/jetties setup should handle that south swell nicely. Just be aware it can get crowded here often, so you’ll want to be on it early.

Moving into the week, Tuesday morning, August 25th is another solid option. The swell drops back a touch to 6ft from the SSE, still with that 12-second period, but the wind swings north at 6 mph, giving us that clean cross-off again (816). It’s not as powerful as Sunday, but the conditions will be glassy. It’s a good one if you missed the weekend.

Wednesday morning, August 26th is also worth a mention. We’ve got 6ft from the SSE, a 14-second period – that’s proper long-period groundswell. Combined energy is strong at 1542. Wind is NNE at 9 mph, cross-off and clean. This is another one that will appeal to experienced surfers. The longer period will make the waves stand up nicely at the jetties, though it might be a bit more lined up than the beach.

Thursday morning, August 27th is the last of the really clean mornings. Swell eases to 4ft from the SSE, 13-second period, with a light NNE cross-off (1046). It’s clean, but the energy is dropping.

Now, there’s a bit of a rough patch from late Friday, August 28th through the weekend and into early September. The wind gets messy, we get some onshore stuff, and the swell direction swings to the east and ENE. There’s some rain around too. Not much to get excited about.

Then we hit Monday afternoon, August 31st and things get serious – a big 12ft east swell with an 8-second period. That’s a massive amount of energy (3042), but it’s short-period windswell and the wind is onshore from the southeast. That’s expert-only territory at best. For a river/jetties spot like this, that much short-period swell with onshore wind will be a washing machine. Honestly, for most people, it’s not worth it.

Looking further ahead, Sunday morning, September 6th is a promising one. We’ve got a clean 6ft swell from the ENE, 8-second period, with glassy conditions – wind is light from the NNE at 3 mph (535). The forecast says “expect very good surf conditions,” and with glass, it’s hard to argue. It’s a week and a half out, so keep an eye on it, but this could be a real gem if the forecasts hold.

Beyond that, the swell drops off, and it looks pretty quiet. So, to sum it up: the best windows are the Sunday and Tuesday mornings at the end of August, and maybe that Sunday morning on September 6th if you’re patient.

Rusty.

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