Molhes de Mampituba Surf Forecast and Surf Report

Alright, Rusty here, let's talk about what's coming up. First up, we'll be looking at Molhes de Mampituba, a river/jetty setup that's fairly consistent and exposed to the swell.

The first part of the week is a write-off. Saturday and Sunday are just messy; we've got cross-shore and cross-onshore winds in the 12 to 15 mph range ruining any 4ft swell. The energy is moderate, but the conditions are just plain poor.

Things start to turn on Monday, the 14th. That morning, a light offshore breeze swings in, cleaning up a 4ft south swell with a period of 9 seconds. The energy is moderate, and it's looking clean. But the real highlight of the day is Monday afternoon. The wind goes completely glassy, a rare treat. The swell is 4ft from the ESE with an 8-second period, and the combined energy kicks up (moderate). That’s the standout session for the first week—just you, the river mouth, and some glassy little runners.

Tuesday and Wednesday are rough again with a lot of onshore chop, so we sit it out. Thursday morning the 17th has clean conditions but only a tiny 3ft swell, not worth getting wet for.

Now, let’s talk about the true standouts of this whole forecast. Friday the 18th morning sees a jump in size to a 5ft swell from the northeast. The wind is light and offshore, and it’s clean. The energy is moderate. That’s a solid, punchy morning for an intermediate surfer.

But the absolute best on offer is Sunday the 27th of September. That morning, we’ve got a 6ft swell from the ENE, with glassy conditions. The combined energy is strong. That’s the biggest, cleanest swell of the whole period. For a river mouth like Molhes de Mampituba, that swell will set up some fun, walled-up waves. This is the one to circle on the calendar.

Also keep an eye on Thursday the 24th and Friday the 25th. Thursday afternoon has a big 6ft SSE groundswell (14-second period) with strong energy, but it’s cross-onshore and choppy. Friday the 25th morning is cleaner with a 5ft SSE groundswell at a 12-second period and offshore wind—that energy is solid, a great option if you can get out before the wind shifts.

So, the story is: a very slow start, two good days mid-month (the 14th and 18th), then a big ramp-up to a proper glassy session on the 27th that you won't want to miss. Stay patient.

- Rusty

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