Black Rocks Jetty Surf Forecast and Surf Report

Alright, Rusty here. Let’s have a look at what’s on the cards for Black Rocks Jetty. This is a solid, very consistent reef break that lights up on a solid SW swell, and we’ve got a ripper run of conditions coming through. The water temp is sitting pretty average for this time of year, nothing crazy to report there.

We kick off on Tuesday, the 18th of August, with clean, glassy conditions and a tidy 3ft S swell with a long 12-second period. It’s not big, but it’s clean, and the combined energy is a solid moderate push (533). Things back off a touch into Wednesday with smaller 3ft S swell, though Wednesday afternoon turns glassy again and is worth a paddle.

Thursday the 20th sees the direction swing to a long-period SW groundswell at 3ft, 16 seconds – that’s proper groundswell, so expect long, clean lines at this reef but longer waits between sets. Still glassy, so it’s a nice morning session.

Now, Friday the 21st is where it starts getting serious. The swell bumps up to 4ft from the SW, 14 seconds, with glassy conditions all day. Combined energy is well into moderate territory (603). Saturday the 22nd keeps building: 5ft SW swell, glassy in the morning, and the energy jumps to 902 – that’s a lot of punch for a head-high wave.

Sunday the 23rd is a standout for more experienced surfers. We’re looking at a 8ft SSW swell, 14 seconds, with clean, glassy conditions in the afternoon. The energy is up at 2313 (strong). This is one of the best on offer – big, clean, and with that long period pushing through, the reef will handle it beautifully. Just be aware, with this size, it’s expert territory, and crowds are possible.

Monday the 24th stays solid at 6ft SW swell, glassy morning, excellent for experienced surfers (1110 energy).

The real monster shows up on Tuesday the 25th of August. Tuesday afternoon sees a 12ft SSW groundswell with a very long 16-second period. Combined energy is a massive 6450 – that’s exceptional wave energy, and the conditions are glassy. This is an absolute standout for experts only. If you’re not on it, you’ll be watching from the rocks.

Wednesday the 26th keeps the swell at 10ft SSW in the glassy morning, but by afternoon the wind gets a bit cross-on, so aim for the early session. Thursday the 27th morning is another huge standout: 12ft SSW, 16 seconds, glassy, with 5672 energy. That’s world-class power for the brave.

Friday the 28th and Saturday the 29th see a slow drop in size, but there’s still plenty of swell around 7ft to 7ft, though winds get a bit messy. Sunday the 30th afternoon cleans up nicely with glassy 4ft S swell.

Monday the 31st of August has a tiny 2ft SW swell but with an 18-second period – that’s a very long groundswell. It’ll be small but incredibly clean, and the reef might still offer some long, gutless runners if you’re patient.

The first few days of September look promising too, with a 5ft to 6ft SW swell and glassy conditions. Solid, reliable, and not as daunting as the end of August.

All up, the absolute standout is Tuesday afternoon the 25th and Thursday morning the 27th for expert surfers chasing big, clean groundswell. For the everyday surfer, Friday the 21st through Sunday the 23rd offer the best mix of size, shape, and clean wind.

Stay safe out there.
Rusty.

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