Black Rocks Jetty Surf Forecast and Surf Report

Alright, Rusty here. Let's have a look at what's cookin' at Black Rocks Jetty. It's a reef break, and it's a consistent performer, but it's an advanced wave for sure. The water's running at 77°, which is a touch warmer than normal for this time of year – a little gift from the ocean.

We've got a bit of a slow start. Sunday morning, the 30th, we see a solid 8ft SSW swell, but it's getting chopped up by a cross-onshore wind. The combined energy is real high, at 2048, but the wind's making it messy. Not the one. The real story for Sunday kicks off in the afternoon. The wind drops to glassy, and we've got a clean 7ft SSW swell with a 13-second period. That's proper groundswell, and for a reef like Black Rocks, that's going to set up some nice, long lines. The energy's still high at 1377. That's a very solid, clean session for the experienced crew.

Monday, the 31st, the swell drops back to 4ft from the S, but it's glassy in the morning with a 12-second period. It's clean but smaller. Monday afternoon, the wind goes offshore from the NNE, a light 10 km/h, cleaning up the 4ft S swell nicely. Surfable for sure, but nothing to write home about.

Tuesday, the 1st of September, the swell is tiny – under 3ft – and the energy's dropping off a cliff. We go into a bit of a flat spell. Wednesday and Thursday are even smaller, with energy dipping below 200. It's glassy on Thursday, but the waves are barely there. You're looking at a few days of pretty ordinary conditions, with maybe a knee-high ripple if you're lucky.

Now, keep your eyes on the horizon. Friday, the 4th of September, we see a pulse of long-period groundswell arriving. Friday afternoon we get a 5ft SW swell with a massive 18-second period. That's a very long period, and the energy jumps to 1278. The wind is onshore, so it won't be clean, but it's a sign of things to come.

The standout window opens on Saturday, the 5th of September. Saturday morning, the swell is up to 6ft from the SW, 14-second period, and the wind is light and cross-offshore. Clean conditions with 1220 energy. That's a good, solid day. Saturday afternoon goes glassy, with 5ft of the same long swell. Then Sunday the 6th is a bit of a rest day with a smaller, wind-affected swell.

But the real bombshell is the following week. Monday, the 7th of September, we get a glassy morning with 6ft SSW groundswell at a 14-second period, energy at 1033. Excellent.

Tuesday, the 8th of September, it builds. Tuesday morning is glassy with 7ft SSW swell and energy at 2532. That's serious. But Tuesday afternoon is the early call for the best of the run. We've got glassy conditions, a 8ft SSW swell with a 17-second period, and the energy is pegged at 3600. That's a heavy, clean, long-period groundswell hitting a reef. This is for advanced surfers only, and it will be absolutely pumping.

Then, on Wednesday the 9th of September, we get the big one. Wednesday morning is glassy, with a 13ft SSW swell. The combined energy is a massive 9462. That's huge. It's glassy, but a 13ft reef break is only for the most experienced, expert-level surfers. Wednesday afternoon is still huge, at 12ft and glassy, with 7013 energy. This is a serious, heavy-water session. Not a day for the faint of heart.

After that peak, the swell drops through Thursday and Friday the 10th and 11th, but it's still holding solid, clean lines. Thursday afternoon is glassy with 8ft S swell, and Friday morning is glassy with 6ft S swell. That's a great tail end to a strong run.

The forecast then shows a drop-off into the second week. Saturday the 12th and Sunday the 13th of September are smaller again, with waist-high clean waves in the afternoons. Sunday afternoon is interesting – a very long 23-second period SSW groundswell, but only 3ft. That'll be a long, slow, glassy wall.

Monday the 14th sees a new pulse of SSW swell at 6ft with a 17-second period, but the wind turns cross-onshore, making it a bit of a messy, powerful option.

So, to sum it up: the first few days are small and poor. The best on offer is that Tuesday afternoon, the 8th of September, with its glassy, powerful 8ft SSW groundswell. That's the standout. The Wednesday, the 9th, is the big-daddy expert session, but the Tuesday offers the best combo of size, power, and perfect conditions. For the less experienced, the Monday morning the 7th or the Thursday/Friday sessions the 10th and 11th will be your best bet, when the swell is still solid but not terrifying.

Rusty.

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