Molhes de Mampituba Surf Forecast and Surf Report

Alright, surfers, Rusty here. Let’s cut through the noise and talk about the waves on the slate for the next couple of weeks. It’s a bit of a slow-burn story, but we’ve got some moments that will get the heart pumping, especially for those of you who know your way around a proper wave.

The early action kicks off this Sunday morning, the 16th, with a solid pulse of ENE groundswell. We’re looking at surf in the 7.9ft range with a period of 8 seconds, and with a light cross-off breeze, it’s going to be clean and lined up. This is serious surf for experienced heads only--that size and energy (1259) will push you around if you’re not on your game. The standout here, no question, is Molhes de Mampituba (Rio Grande do Sul). It’s a rivermouth setup, so it handles this kind of swell well, but be prepared for a crowd; it gets busy when it’s good.

Sunday afternoon, the wind swings onshore and the quality drops off a cliff. We lose the window, and it gets messy. Monday the 17th morning sees a repeat of the morning conditions, with 7.2ft ENE swell (1069) and light cross-off winds, again offering up excellent waves for those who are comfortable in powerful surf. This is your second-best window for a proper paddle. But again, this is not a beginner's playground; 7.2ft of swell with that kind of energy is for the experienced crew.

After Monday morning, things back right off. Tuesday the 18th drops to a weak 3.9ft, and the wind is all over the place. We have a few days of poor, small, and onshore conditions. Wednesday the 19th is basically a write-off, with surf down to 2.6ft. Thursday the 20th has a little bump from the south, but the wind is off, so it’s not doing us any favors. The 21st is pretty flat with a weak 2.6ft and very ordinary.

We’re in a quiet patch from Tuesday morning through to Friday--a few days of nothing worth getting excited about. But hold on, because things start to build again on Saturday the 22nd. A new S swell shows up on Saturday morning with 4.6ft at a longer 10-second period, but the wind is on it, making it a bit lumpy. Not great. Sunday the 23rd is when it really kicks off, but again, the wind messes it up. We’ve got 7.5ft of S swell (1908) and clean conditions in the morning, but the afternoon sees a fresh cross-shore wind that'll chop it all up. It's another one for experts only.

The following week is where we see the most promising outlook, though as always, it’s a bit further out so we temper the expectations. Monday the 24th has a cleaner 4.6ft groundswell from the south with a good 11-second period and light winds. It will be clean and fun, a proper step down from the weekend's power. There is a small, clean window on Tuesday the 25th morning with 3.9ft SSE swell.

Then, it all comes together on Wednesday the 26th. The morning has a fun 3.6ft S swell, but the real magic is in the afternoon when the wind goes totally glassy. We have 5.9ft of E swell (715) with zero wind. This is the standout of the whole period. Clean, glassy conditions, and a decent size. This is the one to circle on your calendar for sure. The period is a short 7 seconds, which might make it a little sectiony at the beach breaks, but for a rivermouth like Molhes, it should be a lot of fun. This is for intermediate to expert surfers; 5.9ft is definitely pushing it for beginners.

Thursday the 27th keeps the run going with a glassy morning and 4.6ft of S swell. Then Friday the 28th, we see another strong push in the morning with 5.2ft ESE swell, clean cross-off winds, and good energy. The weekend of the 29th and 30th is more of the same, with clean mornings and a bit more easterly swell. The first week of September should have a few more clean windows, but they’ll be a bit smaller, so don’t expect the punch of those mid-week days. The long-range looks promising, but let’s not get ahead of ourselves.

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