Balneario Sao Jose Surf Forecast and Surf Report

G’day, Rusty here. We’ve got a mixed bag of surf coming up for Balneario Sao Jose. The pattern kicks off with some decent pulses, but there’s a flat spell to push through before things get really interesting again in the second week.

The first real window is Thursday, 13th August. Thursday morning is the standout early in the period. We’ve got clean 5ft swell from the SSE with a 13-second period, and the wind is dead glass – absolutely zero, making for perfect conditions. The wave energy is moderate at 681. This is the pick of the first few days. Thursday afternoon sees the swell bump up to 5ft from the SSE and the period stretches to a juicy 15 seconds, giving the waves more punch and shape, but the wind turns onshore, so it won’t be as clean as the morning.

Friday, 14th August, the morning is a bit messy with a cross-onshore wind and 4ft S swell. But Friday afternoon is another glassy session – 4ft from the SSE with a 13-second period and clean conditions. Wave energy sits at 587, so it’s a solid, surfable option.

Saturday, 15th August, sees the swell bump up to 6ft from the SSE in the morning, but the cross-shore wind messes it up. Saturday afternoon drops to 4ft and gets choppy with a 12 mph cross-shore wind – not worth paddling out for.

Sunday, 16th August, morning brings a clean glassy session with 6ft from the ESE. But that period is short at only 8 seconds, so it’ll be a bit crumbly and less organised. Still, with no wind, it’ll be fun for a few. The afternoon gets a cross-onshore breeze, so the morning is the call.

Monday, 17th August, morning is glassy again with 6ft from the ESE and a 9-second period. Wave energy is moderate at 530. A nice session if you can sneak out.

Then the forecast goes quiet. From Tuesday, 18th August, through to Saturday, 22nd August, it’s mostly poor with small, weak swells and onshore winds. There’s a long gap of about five days with no real quality on offer. Swell drops to under 3ft and the combined energy dips below 100 on the 19th and 20th – really weak stuff.

But hang in there. Sunday, 23rd August, morning fires up again. Clean glassy conditions with a solid 7ft swell from the S, with an 11-second period. Wave energy is strong at 938. That’s a proper session, but at 7ft it’s getting into intermediate-to-expert territory. The afternoon stays at 7ft but the wind goes onshore, so hit it early.

Monday, 24th August, morning is the real standout of the whole outlook. Glassy calm, 6ft from the SSE with a 12-second period, and the combined wave energy jumps to 1025 – that’s strong, powerful surf. The water temperature is about 70°, which is a touch warmer than normal for this time of year, so you won’t need a thick suit. The swell is well-directed and the conditions are perfect. This is the session to circle on the calendar.

Tuesday, 25th August, holds solid with 6ft from the S and a 14-second period – very long period groundswell. Energy is strong at 1234, but the cross-shore wind will put a bit of texture on it. Still, the power and shape will be there.

After that, the swell slowly fades through Wednesday and Thursday, 26th and 27th August, with onshore winds and smaller, weaker waves.

Overall, the best on offer is Thursday 13th morning for clean fun waves, but the absolute standout is Monday 24th morning – glassy, strong, well-directed swell, and plenty of power.

Catch ya in the water.

Rusty

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