Praia da Bertioga Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it.

We’ve got a slow burn to start this 16-day stretch. The surf is pretty much flat and ordinary for the next few days, so don’t even bother waxing up until later in the week. We’re looking at a real quiet spell with tiny, weak waves and not much energy behind them. This is going to be a waiting game.

The first real glimmer of hope shows up on Saturday, August 8th. It’s not huge, but the quality jumps out. The morning kicks off with a clean 5ft south swell, period around 13 seconds, and it’s glassy. The energy reads at 633, which is a solid jump from the nada we’ve been seeing. This is the standout, no doubt. Praia da Bertioga is exposed to this kind of south energy, and with the conditions this clean, you’d be mad to miss it. The water’s sitting at 69°, which is a touch warmer than normal for this time of year, so it should feel pretty comfortable out there. The afternoon holds up too, with 4ft and an even higher energy reading of 677. This is your window.

Sunday, August 9th, is a bit of a tease. The swell is still there at 5ft, but the wind swings around and puts a bit of chop on the surface. It’s not terrible, but it’s not the glassy perfection of the day before. I’d rate it as just okay. The morning is the better bet, but it’s a step down.

The start of the new week gets messy. Light rain moves in on Monday and Tuesday, and the wind turns onshore. The swell holds around 4ft, but the quality drops right off. It’s the kind of lumpy, junky surf that’s more frustrating than fun. You’ll see the size on the buoy, but it won’t be worth your time. This stretch is a write-off.

Keep an eye on Thursday, August 13th. The morning looks like another proper standout. The wind drops to nothing, it’s glassy, and we’ve got a clean 4ft south swell with a 13-second period. The energy is strong at 647. This is another one of those “be there at dawn” moments. It’s a return to form after a few days of slop.

After that, it’s another patch of messy, onshore conditions right through to the 16th. More rain, more chop, more frustration. The swell is still there, but it’s ragged.

Now, for the second week, things get interesting in a different way. We’ve got a bigger swell on the horizon, but it comes with its own set of issues. Around Monday, August 17th, we see some 5ft waves, but the period is short, around 7-8 seconds. That’s windswell, not groundswell, so it’s going to be a bit crumbly and less powerful than the size suggests. It’ll be cleanish with a cross-off breeze in the morning, but it’s not going to be the gem of the period.

Then, on Tuesday, August 18th, we get the biggest swell of the entire run. The models are showing an 8ft east-southeast swell, and the energy readings are through the roof at 1677. That’s a serious amount of water moving. However, the wind is forecast to be onshore and the conditions are going to be rough. For this break, this is getting into expert-only territory. It’s too big and powerful for the average surfer, and the onshore wind is going to make it a battle. It could be a spectacle to watch, but for paddling, it’s going to be heavy and challenging. The excitement is there, but you need to be on your game.

So, to wrap it up. Don't bother with the early week. The standouts are the glassy, clean windows of Saturday morning, August 8th, and Thursday morning, August 13th. That’s where you want to be. The big swell on the 18th is for the brave only.

This is Rusty, signing off.

Read more