Black Rocks Jetty Surf Forecast and Surf Report

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

We’ve got a solid run of surf coming up at Black Rocks Jetty, but it’s one for the crew who know what they’re doing. This is a reef setup, and it’s no place for a learner. The water’s sitting at a balmy 76°, which is a touch warmer than normal for this time of year – nice for a long session.

The first real action kicks off Monday morning, September 7th. We’re looking at a 7ft SSW swell pushing in. The period is a solid 15 seconds, so there’s proper groundswell energy behind it. The wind is cross-on from the south at 9 mph, so it’s going to be a bit bumpy and choppy. The combined energy is strong (1738), but the conditions are marginal. Not a day to get too excited about.

Monday afternoon sees the swell bump up to 8ft with the same cross-on wind. Still messy.

Tuesday the 8th is where it starts to get interesting. The morning brings 7ft of SSW swell, period 16 seconds, and the wind switches to a light cross-shore from the SSE at 6 mph. The energy is now very strong (4139), and the ripple is small. It’s building.

Then Tuesday afternoon, things get serious. The swell jumps to 12ft from the SSW with a 15 second period. The wind is still cross-shore from the SE at 9 mph. This is big, powerful surf. The combined energy is massive (8042). This is expert territory only. It’s going to be a heavy, challenging day.

Wednesday morning, September 9th, is the absolute standout of this whole outlook. The swell is still a pumping 12ft from the SSW, but the period stretches to a very long 17 seconds. This is pure, deep-ocean groundswell. The wind drops to a whisper from the SSE at just 3 mph, making it a light cross-shore. The energy is massive (8087). The morning is a beast, but it’s a beast with clean lines.

Wednesday afternoon, September 9th, is the best window. The swell holds at 12ft from the SSW, period 17 seconds, and the wind goes completely glassy – zero from the west. This is as good as it gets for a big swell. The energy is still very strong (6375). For the experts out there, this is a dream session. This is the one to circle on the calendar.

Thursday the 10th sees the swell drop back to 7ft in the morning, then 5ft in the afternoon. The wind is light and glassy from the SW. A much more manageable day, but still clean.

The rest of the first week and into the second week sees the swell slowly wind down, with plenty of glassy mornings and clean afternoons on smaller waves. Friday the 11th has tiny 4ft waves, glassy. Saturday the 12th is similar.

By Sunday the 13th, the wind picks up again, and the quality drops.

There’s a gap of smaller, less consistent surf from the 14th until the 18th, but then we get a little pulse again. Tuesday the 15th shows 5ft and 4ft with glassy wind, clean and fun. Wednesday the 16th has a solid 7ft swell with glassy conditions – another good window for the experienced.

After that, the swell fades into the 22nd, with smaller waves and mostly clean conditions but nothing to write home about.

Overall, the standout is crystal clear: Wednesday the 9th of September. The combination of a long-period 12ft SSW swell and glassy wind is about as good as it gets for a big reef break like Black Rocks Jetty. For the experts, that’s the day.

Rusty.

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