Balneario Sao Jose Surf Forecast and Surf Report

Alright, Rusty here. Let's have a look at what's on the cards for Balneario Sao Jose.

Right off the bat, things are looking a bit ordinary. There’s no real surf to get excited about for the first couple of days – a small, choppy 3ft S swell with a short 8-second period and cross-onshore wind will have you staring at a bumpy, low-energy sea. The combined energy is a weak 168, so don't bother paddling out just yet.

Wednesday the 2nd sees a jump in size to 5ft from the SSE, with a slightly better 10-second period, and the wind swings onshore. The energy picks up to a moderate 514, but it’s still looking marginal with rain showers around.

Thursday the 3rd stays similar with 5ft from the SSE, but the wind finally eases off. A light cross-shore from the ENE will clean things up a little, but the forecast is still calling it marginal.

Now, Friday the 4th of September is where we finally get a window. The swell drops to a small 3ft from the SSE, but it’s got some nice 11-second period to it. The kicker is the wind: absolutely glassy in the morning. That’s the one to aim for. It’ll be clean and lined up, but don’t expect much power – the energy is moderate at 301. This is a pick for the early bird.

After that, things go flat and choppy again through the weekend with rain and poor conditions. Saturday the 5th sees tiny 2ft surf and Sunday the 6th brings onshore winds and rain, so you can leave the boards at home.

Monday the 7th is interesting but not for paddle surfing. A solid 7ft S swell rolls in with a moderate 9-second period and a very strong combined energy of 1153, but with 9 mph onshore wind and rain, it’s going to be a messy, blown-out beach break. If you’ve got a kite, this setup will be far more fun than a surfboard. Tuesday the 8th stays similar, though the wind eases slightly.

Wednesday the 9th and Thursday the 10th bring more east swell in the 7ft to 7ft range, but with strong cross-onshore winds up to 16 mph, it’s choppy and poor. Not worth it for surfing.

Friday the 11th of September is another standout. The swell drops to a clean 5ft from the ESE with a 9-second period, and the wind turns cross-offshore from the NE. That’s a clean, workable wave. The energy is moderate at 461, and conditions look good for an intermediate session. Get out there.

Saturday the 12th is small again, with 3ft ESE swell and glassy conditions in the afternoon, but the energy is low at 196. It’s surfable but nothing special.

Sunday the 13th looks promising for a glassy morning session with 6ft from the SSE, but the period is a short 6 seconds, so the waves will be a bit soft and lumpy despite the clean surface. The energy is moderate at 290.

From Monday the 14th onward, the swell drops off and the wind turns onshore again. There are some longer period swells (12 seconds) around the 14th and 15th, but the size is small, 3ft to 3ft, and the wind is cross or cross-onshore. It’s not looking good for the second week, and the 16th is a write-off with choppy, poor conditions.

Overall, the best bet is Friday the 4th of September for a glassy morning session, or Friday the 11th of September for a bit more size with clean cross-offshore wind. Everything else is either too small, too windy, or just plain messy.

The water temperature here is 71°, which is a touch warmer than usual for this time of year. Nice for a longer session.

Rusty.

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