Black Rocks Jetty Surf Forecast and Surf Report

Alright folks, Rusty here. Let's have a look at what's on the cards for Black Rocks Jetty over the next couple of weeks.

Right off the bat, we've got some serious size rolling in, but the wind is the problem. For the first few days, we're looking at a solid groundswell from the SSW, but it's coming with ugly cross-onshore winds. Thursday the 27th kicks off with a 10ft SSW swell (17-second period) and a massive combined energy of 4932, but a light cross-onshore breeze is making it messy. It's going to be a scrap. The afternoon gets worse as the wind picks up to 12 mph, turning it into a choppy mess. Friday the 28th is a write-off with a 13ft swell but a fresh 19 mph cross-onshore wind making it lumpy and poor. Saturday the 29th still has the cross-onshore wind, so the 12ft swell is going to be bumpy.

The tide and conditions just aren't playing ball for the first few days. It's a classic case of too much wind on too much swell for a reef setup like this.

Then we get a window. Sunday morning the 30th is where it starts to get interesting. The swell drops to a still-chunky 8ft from the SSW (14-second period), but the wind goes dead calm. Glassy conditions. The combined energy is still a powerful 2106, and the forecast calls it excellent for experienced surfers. This is a proper standout. For the experienced crew, this is the pick of the first week. The water temperature is about average for the time of year, so no nasty surprises there.

Monday the 31st sees the swell drop further to 4ft, and it's glassy again, but the energy is down to 497. It's clean, but small. Tuesday the 1st of September and the days that follow are a real lull. The swell drops below 3ft, and while it's glassy, the energy is weak—below 150. This is a gap of several days with nothing really worth rushing for. The surf is "surfable but very ordinary" for a good stretch.

Now, looking into the second week, things wake up again. Saturday the 5th of September shows a promising morning with a 4ft SW swell (15-second period) and glassy conditions, energy at 636. It's a small but clean groundswell. The morning is the time to go.

But the real standout of the entire outlook is Monday the 7th and Tuesday the 8th of September. Monday afternoon sees a clean 6ft SSW swell with glassy conditions and energy of 1247. Then Tuesday the 8th is a cracker. Tuesday morning has a 5ft SSW swell with a very long 21-second period and glassy conditions (energy 2424). That's a proper groundswell—it'll have great shape and power, but it's a reef break, so that long period will wrap in nicely. The afternoon, however, is the big one: an 8ft SSW swell (19-second period), dead calm, glassy, and a combined energy of 5206. The forecast calls it exceptional for expert surfers. If you've got the skills, that's going to be a session to remember.

Wednesday the 9th still has size with an 12ft SSW swell, but the wind is onshore in the morning. The afternoon goes glassy, and it's back to being exceptional for experts. The following days, Thursday the 10th and Friday the 11th, still have clean, solid 8ft to 6ft SSW swells with light winds.

So, the bottom line: the first few days are a write-off due to wind. The standout sessions are Sunday the 30th of August for a solid, clean swell, and the absolute peak is Tuesday the 8th of September for a massive, glassy, long-period groundswell that only the experts should tackle. The 8th of September afternoon is the one to circle on the calendar.

Rusty.

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