Balneario Sao Jose Surf Forecast and Surf Report

Alright, surfers, Rusty here. Let's cut through the noise and get into what this stretch has in store for us. It’s a bit of a waiting game at first, but there’s some real potential hiding in the back half of this forecast window.

The opening days are pretty ordinary. We’re looking at small, weak surf with easterly windswell, and the energy in the water is minimal. The combined swell energy is weak, reading 126 at the start. It’s the kind of surf you’d only consider if you were desperate for a paddle. Winds are light and glassy at times, but the waves just aren't there. The water temperature is 68°F, which is about normal for this time of year, so you won't need the thickest suit just yet.

We roll into Friday and Saturday the 7th and 8th, and things get a little more interesting but still messy. Friday is poor. Saturday the 8th brings a new S swell, and the energy jumps up to a moderate 372 on the morning. It’s 4ft at 10 seconds, and with light offshore winds, it might be worth a look, but it's not lighting the world on fire. The afternoon sees the period stretch out to 15 seconds and the energy jump to a strong 789, but the wind turns cross-onshore, putting a bit of a crumble on it. It could be alright, but there are better days ahead.

Sunday and Monday are a write-off as onshore winds and rain move in. The surf is there, but it's lumpy and poor, not worth your time. The swell hangs around 4ft to 5ft, but that wind just kills it.

Now, here’s where things start to turn. The real standout, the one I'd circle on the calendar, is Wednesday morning, August 12th. The wind goes glassy, the sky clears, and we've got a solid 4ft of south swell at 12 seconds. The energy is moderate at 567, but the conditions are primed. This is the cleanest, most lined-up the surf will be all week. That's your window. It's a beach/pier setup at Balneario Sao Jose, exposed to that south swell, so it should have some push. The crowd factor is listed as "often", so be ready to share the lineup. This is the one to put on your shortlist.

Thursday the 13th, it gets poor again with onshore winds. Then Friday the 14th, the swell starts to build again, but it's on the stormy side. By Saturday the 15th, the energy is reading 1783, which is strong, but it comes with 12 mph onshore winds and rain. It's big and messy, and unless you're into a battle, it's not what you're looking for. Honestly, at that size and with that wind, this spot looks more interesting for the kite crew than for us paddle surfers.

Then we get another serious window. The following Tuesday morning, August 18th, looks excellent. The swell is 7ft, but the wind is glassy from the WNW. The period is a little shorter, 9 seconds, and the energy is a strong 1426. It's going to be a powerful, clean morning. This one is for experienced surfers only, as that size gets well past the beginner zone. This is a serious, powerful morning of waves. The swell direction is E, which isn't the optimum direction, but the combination of size, light wind, and clean conditions make it a standout.

After that, it backs off again. The last few days of the forecast, from the 19th through the 21st, fade back to small, weak, and ordinary surf. There’s a little bump on Friday morning the 21st with glassy conditions, but it's only 2ft. Back to the small stuff.

So, to boil it down: if you only surf once, make it the morning of Wednesday, August 12th. If you're a more experienced surfer looking for the biggest, most powerful session of the window, mark your board for Tuesday morning, August 18th. The rest is either small, messy, or blown out. Stay patient, and you'll be rewarded.

Rusty, out.

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