Balneario Sao Jose Surf Forecast and Surf Report

Hey everyone, it's Rusty. Gotta be straight with you – the next couple of weeks at Balneario Sao Jose are a real mixed bag. It's not gonna be a classic stretch, but there are a few windows where things line up if you're patient and pick the right sessions. The water is sitting at 70°, which is a touch warmer than normal for this time of year, so that's a nice bonus.

Looking over the forecast, we start off with a bit of a dud. Monday the 24th has a 7ft south swell pouring in, but that's a long 13-second period and it's hitting this exposed beach/pier with a cross-onshore wind from the ESE at 6 mph. It's just messy, with heavy energy (1768) but poor conditions.

Tuesday the 25th is more of the same – some chest-high SSE swell but the wind is cross-shore or cross-on, keeping things a bit bumpy. Honestly, you can skip the start of the week.

But then, Wednesday the 26th morning is our first real standout. We get a clean 4ft swell from the SSE, and it's absolutely glassy – zero wind, SW at 0 mph. That's the magic word right there. The swell period is a super long 16 seconds, which is a proper groundswell, giving the waves real shape and push. The energy is moderate (1019) but for a point or reef, this setup would be a dream. For a beach break like this, the long period can make it close out a bit straight, but when it's glassy and the water's warm, you still get some runners. This is the session for experienced surfers who know the sandbanks.

Wednesday afternoon gets a bit messier as the wind turns cross-on, but the swell bumps up to 6ft (1554 energy) – still from the SSE, so if you can find a sheltered corner, maybe.

Thursday the 27th is okay but nothing special with a cross-shore wind. Friday the 28th morning has some potential: a 6ft swell from the east, but with a very short 7-second period. The good news is it's glassy again with NE wind at 3 mph. The short period means weaker, more disorganized waves, but clean conditions can still make it fun on a longboard. The energy is still moderate (741).

Saturday the 29th is interesting. Morning has an offshore wind from the north at 6 mph, with a 4ft east swell – clean and workable. Then Saturday afternoon goes glassy again with a west wind dying to 0 mph and a 4ft east swell. Not big, but two completely clean sessions in a row.

After that, things drop right off. Sunday the 30th through Tuesday the 1st of September is a real flat spell. Swells drop below 3ft, winds are either onshore or messy. There's a gap of about three days where it's not worth paddling out unless you're desperate. The energy drops to as low as 99 during a rain shower on Tuesday afternoon.

There's a glimmer of hope coming back around Wednesday the 2nd of September. A 5ft S swell arrives with a solid 12-second period, and Wednesday afternoon it goes glassy again with a 5ft SSE swell (898 energy). That's another session to circle on the calendar. The wind is light ENE, then calm – clean conditions with a real groundswell pulse. Good for experienced surfers.

The weekend of the 5th and 6th September looks okay. A 6ft S swell on Saturday afternoon, but with a cross-shore wind. Then Sunday the 6th sees clean, offshore winds from the north and NNW with waist to chest-high SSE swell. Those morning and afternoon sessions could be fun, easy-going waves.

Into the second week (around September 7th and 8th), the energy persists but winds get trickier. The 7th has glassy morning conditions with a 4ft SSE swell at 11 seconds – clean but not powerful. The 8th is a write-off with strong cross-shore winds.

So, if I had to call it: the standout is Wednesday, August 26th, morning. Glassy conditions, a clean 4ft, 16-second groundswell from the SSE, and water that's a touch warmer than normal. That's the session. The backup is Wednesday, September 2nd, afternoon – another glassy window with a decent SSE swell. Everything else is just pick-and-choose for the die-hards.

Rusty.

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