Molhes de Mampituba Surf Forecast and Surf Report

Right, let’s have a look at what’s coming down the line. This forecast is all for Molhes de Mampituba, the river/jetties set-up. Over the next 16 days, it’s a bit of a mixed bag. There are some solid windows of clean surf, but also some proper blown-out spells and a few flat-ish days to sit through. The first proper action worth paddling out for isn’t until Thursday morning the 10th.

So, Thursday morning the 10th kicks things off. The swell is a modest 3 ft out of the SSE with a long period of 15 seconds – that’s proper groundswell energy. The combined energy is moderate at 389, and with a light 10 km/h cross-offshore breeze from the NE, the conditions are clean. It’s not big, but for a river-mouth setup, that long-period SSE groundswell will wrap in nicely and offer some lined-up walls. The water temp is about average for this time of year, nothing weird going on there.

Friday the 11th is a write-off. The swell is short-period junk and we’ve got heavy rain and onshore wind messing it all up. Saturday the 12th sees a bump in size – 5 ft on Saturday morning – but it’s from the SSE with a short period of 8 seconds and a messy cross wind. The combined energy is 491, but the wave comment says poor conditions. Don’t bother.

Sunday morning the 13th is a little tease. The swell drops back to 3 ft from the SSE, but the wind goes glass – dead calm, 5 km/h from the SSW. The combined energy is weak at 155, and the wave comment calls it “surfable but ordinary.” If you’re desperate for a glide, it’ll be clean but small and weak. The afternoon turns to crap again.

Monday the 14th and Tuesday the 15th are both blown out by strong winds, with moderate cross-chop and poor scores. Not worth a look.

Now, here’s where it gets interesting. Wednesday morning the 16th we get a proper pulse: 7 ft from the SSE with a long period of 11 seconds. The combined energy jumps to 926 – that’s strong wave energy. The wind is a light 10 km/h cross from the SSW, so it’s clean. This is getting into expert territory at that size, especially with that period. The jetties should focus it nicely, but it’ll be a heavy one. Not for the faint-hearted.

Thursday morning the 17th is the standout of the whole forecast. The swell is a more manageable 5 ft from the SSE, with an even longer period of 11 seconds. Combined energy is 520 – moderate-strong. But the wind is a light 15 km/h cross-offshore from the NNE, and the wave comment says “expect very good surf conditions.” This is the one. Clean, lined-up, solid groundswell hitting the jetties. Crowds are “often” here, so expect company, but for this quality, it’ll be worth it.

Friday morning the 18th brings another big one: 7 ft from the ENE with a short 8-second period, but the wind is glass – dead calm, 5 km/h from the SW. Combined energy is 853. That’s a big, fat, clean wall. Again, expert-only at that size, and the short period means it’ll be a bit dumpy and punchy on the banks. Look for the deeper channels.

After that, things fade. Saturday the 19th morning is a nice little 4 ft from the E with a 5 km/h cross-offshore breeze – clean but small. Sunday the 20th is tiny. Monday the 21st morning sees a long-period 3 ft groundswell from the S with a 12-second period and clean cross-offshore wind – combined energy 444, so decent for the size. A sneaky good session if you’ve got a log or a fish.

The rest of the second week is mostly small, messy, or onshore. Thursday the 24th morning has a nice glassy 3 ft from the SSE with a 12-second period and clean conditions. And Friday the 25th morning sees a solid 7 ft from the E with a 10-second period and clean cross-offshore wind, combined energy 962 – that’s a big end to the run, but it’s a week and a half out, so keep an eye on it.

Overall, the best windows are Thursday morning the 17th for the all-round quality, and Wednesday morning the 16th for the big, clean groundswell for the experienced crew.

Rusty.

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