Balneario Sao Jose Surf Forecast and Surf Report

Alright, grab your board. I’m looking at the next couple of weeks around Balneario Sao Jose, and it’s a bit of a mixed bag but there’s some real promise brewing if you’re patient.

First thing you’ll notice – the water’s sitting at about 69°, which is just a touch warmer than usual for this time of year. Nothing crazy, but nice if you’re in a spring suit.

Okay, let’s get into the surf. The week kicks off with a bump on Monday the 17th. We’ve got a 5ft ESE swell rolling in with an 8-second period, and it’s glassy as anything with a light SSW wind. The wave energy’s moderate at 408. It’s not massive, but for a Monday morning session, it’s clean and fun. That’s your first real window.

After that, things get a bit ordinary. The swell drops off through Tuesday and Wednesday, and the winds get messy. By Thursday the 20th, we’re looking at weak 2ft waves with hardly any energy (42) – honestly, not worth paddling out for. That kind of flat spell hangs around through Friday and Saturday, with onshore winds and chop. We get a little bump of S swell on Saturday the 22nd, 5ft at 10 seconds, but the wind is onshore and the conditions are just marginal. Not the kind of day you’d drag anyone out of bed for.

The second week starts to show some life. The S swell sticks around, and by Sunday the 23rd afternoon, we’ve got 5ft at 12 seconds from the S, with moderate energy (535). The wind is light cross-onshore, so it’s a bit of a gamble, but the period is getting longer. Into Monday the 24th, the swell holds but the rain and onshore wind make it a write-off.

Then things start to get interesting. On Wednesday the 26th, the wind goes glassy again with a light SW breeze, and we’ve got a clean 3ft S swell at 11 seconds. The energy is moderate (308) and the conditions look good. That’s a sneaky-good morning session.

The real standout? Look at Monday the 31st of August. There’s a 5ft SSE groundswell rolling in with a stupidly long 16-second period. The wave energy is strong as hell at 1193. Combine that with glassy conditions and a light S wind, and you’ve got an excellent morning for experienced surfers. That’s the one to circle on the calendar. The long period will make it a bit walled at the beach, but if you can find a sandbank that’s working, you’ll be in for a treat.

The following Tuesday the 1st of September brings a bigger 8ft SSE swell at 13 seconds, with massive energy (3338), but the wind is cross-shore and conditions are marginal. That’s more for the experts, and only if the wind cooperates.

So, bottom line: Monday the 17th morning is a solid, clean start. The middle of the week is a write-off. Wednesday the 26th is a hidden gem. And Monday the 31st of August is your best bet – just make sure you’re ready for a long-period swell that’ll keep you on your toes.

Rusty.

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