Black Rocks Jetty Surf Forecast and Surf Report

Alright, Rusty here, let's talk about what's on the menu for the next couple of weeks.

It’s a bit of a slow start, but hold onto your boards because this one’s got a monster of a stretch in the second week. The pattern sets up as a long, slow burn that suddenly explodes into a serious, expert-level groundswell event. The wait is worth it, but you’ve got to be patient.

Right now, we’re looking at a decent start on Monday, August 31st. Black Rocks Jetty is seeing some clean lines from the south, with chest-high sets around 4 ft. The water is a touch warmer than normal for this time of year, coming in at 77°, which is a nice bonus. The combined energy is moderate (497), and with glassy conditions all day, it’s a solid opener. Tuesday and Wednesday fade out fast, dropping to knee-high slop with poor winds, so that’s a write-off for a couple of days.

The real quiet spell hits from Thursday, September 3rd through Friday morning. The swell drops out, and we’re left with tiny, weak energy (80-146). It’s pretty lifeless out there.

Then, the tide turns. Friday afternoon, the 4th of September, we start to see a pulse. A very long period groundswell of 18 seconds from the south-southwest arrives, pushing waves to 4 ft. The energy jumps to a strong 1021, and the glassy conditions make for excellent surf. This is a reef break, so that long period will wrap in beautifully, offering proper lines. It’s a standout for experienced surfers looking to get an early jump on the weekend.

The real standout, though, is the window from Monday, September 8th, through Wednesday, September 10th. This is the big one. On Tuesday the 8th, the swell jumps to 10 ft from the south-southwest, with a 19-second period and an enormous energy reading of 7431. Wednesday the 9th is even bigger, with 12 ft of southwest swell and 7213 energy. The winds are reported as glassy and clean. This is "exceptional for expert surfers" territory. Anything over 8 ft is only for the experienced crew, and this is way beyond that. The period is long, but on a reef setup like this, it’s going to be a freight train. If you’re not an expert, stay on the beach and watch the show.

The quality holds through Thursday and Friday, the 10th and 11th, with 8 ft to 6 ft sets and glassy conditions, still excellent for those who can handle it. The combined energy stays strong, between 1472 and 3434.

The weekend of the 12th to 13th gets messy. The wind cranks up from the north-northeast at 16 mph, which is a cross-off, but the consistency drops and the conditions become marginal. By Sunday the 13th, onshore winds from the south-southwest at 16 mph ruin the surface, making it poor.

The final days of the forecast, the 14th and 15th, look clean again but smaller. The 15th of September offers a return to chest-high, clean waves with moderate energy, a nice way to wind down after the big swell.

So, the best on offer is absolutely the 8th, 9th, and 10th of September. That’s the one to circle on the calendar. It’s a long way out, so it’s a promising forecast, but for now, it looks like a proper, heavy swell for the crew that can handle it.

Rusty.

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