Prainha Surf Forecast and Surf Report

Alright, folks, Rusty here. Let’s get into it.

First up, the honest truth: this 16-day window for Prainha is a bit of a slow burner. For the first block of days, we’re looking at tiny, weak waves that are barely worth paddling out for. The swell energy is low, often sitting in the two-digit range, and the wind is sometimes okay but the swell just isn’t there. The water is a touch warmer than normal for this time of year, sitting at 67°F.

Prainha is an advanced spot, and it’s exposed, but from Wednesday the 19th through to Friday the 22nd, the forecast is mostly poor. Wednesday morning has a bit of a cross-off breeze, but the swell is only 3ft from the east with a short period of 8 seconds and combined energy of just 84. It’s small and weak. Thursday morning the 20th goes glassy, but the swell drops to 2ft and the period is even shorter. Not much to get excited about.

Saturday the 22nd and Sunday the 23rd are slightly better. The swell is still small, around 1ft to 2ft, but the period pushes up to 10 or 11 seconds. The combined energy is still weak (55 and 65), but the mornings are glassy. You’ll catch a few small, clean waves if you’re itching for a paddle.

Now, we hit a gap. From Monday the 24th, things get interesting in a different way. The swell starts to build. Monday morning the 24th sees a 3ft swell from the southeast with a 14-second period, and the combined energy jumps to 406. That’s a moderate groundswell. The problem? The wind is cross-shore and it’s messy. The waves are there, but the quality is only marginal. This pattern continues through the week.

The standout window is Monday the 31st of August and Tuesday the 1st of September. Monday afternoon sees the swell bump to 4ft from the east, period 8 seconds, and combined energy hits 250. More importantly, the wind is a clean cross-off from the southwest. This is the best combination of wave height and clean conditions in the whole outlook. Crowds are sometimes an issue at Prainha, so keep that in mind.

Then Tuesday the 1st of September afternoon, the swell gets bigger, up to 6ft from the east with a 9-second period. The combined energy skyrockets to 835. That’s serious power. But the wind is a light cross-on, so it’s not as clean. This one is for the experienced crew only – 6ft is pushing into expert territory.

The rest of the second week sees dropping swell and more rain, with the wind staying onshore or cross-shore, so the quality fades out.

If I had to pick the one true standout, it’s Monday the 31st of August afternoon. That’s your best shot at a decent, clean session with some push. The promise of the 1st of September is real, but it’s a bit rougher around the edges.

Stay tuned, forecasts can change. Rusty out.

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