Prainha Surf Forecast and Surf Report

G’day, Rusty here. Look, I’ve been staring at the charts for Prainha, and I gotta be straight with you—this is a lean run. The swell window is pretty much asleep for the whole 16 days. We’ve got some tiny bumps, but nothing that’s gonna get the heart racing. The energy is weak across the board, and the wind is often a problem. Let’s run through it day by day.

The water temp is sitting around 67°F with a 2°F anomaly, so it’s a touch warmer than normal for this time of year—not a game-changer, but you won’t need a thick wetsuit.

Starting Tuesday, July 28, it’s flat. We’re talking 1ft from the ESE with a short 8-second period. The wind is light cross-onshore, and the combined energy is a paltry 52. The afternoon only gets worse with 2ft from the ENE and a 6-second period—that’s basically wind chop. Not worth paddling out.

Wednesday the 29th starts glassy in the morning with a weak 2ft from the east (45 energy), but the period is still short at 7 seconds. A glass-off is nice for the soul, but with that size and period, you’re fighting for scraps. Afternoon goes tiny and cross-onshore.

Thursday the 30th, same story: glassy morning with 2ft from the east (36 energy), then a light cross-onshore mess in the arvo. Friday the 31st is rubbish—0.3ft from the SE with a 13-second period might sound interesting, but the energy is only 13. That’s a ghost swell.

Saturday, August 1, we see a slight bump: 3ft from the east in the morning (79 energy), but it’s cross-shore wind, and the afternoon goes onshore with 3ft (118 energy). That afternoon has a bit more push, but the onshore wind will ruin it.

Sunday the 2nd is where we finally get a half-decent window. The morning sees 3ft from the east (68 energy) with a light cross-offshore wind from the SSW. The notes say “clean,” and for Prainha, this is as good as it gets in this stretch. Period is still a short 7 seconds, so it’s not gonna be a ripper, but it’s rideable. The water’s still warm-ish. Crowds are “sometimes,” so you might have company. This is your best bet for the whole outlook. The afternoon gets a stronger cross-off but it’s a bit bigger.

After that, it’s back to the doldrums. Monday the 3rd through to Saturday the 9th is a long stretch of tiny surf (1ft to 2ft) with poor to fair conditions. The energy rarely cracks 100. There’s a moment on Thursday the 6th with offshore wind from the SW at 16 mph and clean conditions, but the swell is only 1ft from the SE with a 9-second period (38 energy)—it’s clean and glassy-looking, but you’d be on a longboard hoping for a bump.

Sunday the 9th has another glassy morning with 2ft from the SSE (21 energy), period a miserable 5 seconds. Nice for a paddle, not for surfing.

Now, here’s the interesting bit: Monday the 10th. The morning has 1ft from the SE with a massive 16-second period. The combined energy jumps to 131—that’s moderate energy. It’s glassy. Those long-period swells are prone to breaking straight at beach breaks like Prainha, but if the bank is right, you might get a clean, walled-up little gem. The afternoon sees that energy spike to 156, but it goes onshore. Tuesday the 11th is similar: 1ft from the SE, 14-second period, glassy morning (86 energy). Wednesday the 12th is the same pattern with 1ft from the SE, 14-second period, and 118 energy in the glassy morning. This late-in-the-forecast period (10th to 12th) is the closest thing to a standout, but it’s tiny. The long period means long waits between sets, and the size is small. Best for a longboard or a fish. The wind is glassy or light offshore, so it will be clean.

If I had to pick the best session, it’s Sunday morning, August 2. The swell is 3ft from the east, cross-off wind, clean, and the energy is moderate enough (68) to give you a wave. It’s not a classic, but it’s the most consistent option in this flat spell. The second-best is the glassy mornings of August 10-12, if you can handle the long-period lulls on a tiny wave.

Overall, it’s a tough outlook. No big swell, a lot of onshore junk, and the best you can hope for is clean, knee-to-waist-high dribblers. Keep an eye on it, though—forecasts can change.

Rusty.

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