Black Rocks Jetty Surf Forecast and Surf Report

Alright, Rusty here. Let’s get into what we’ve got with this Black Rocks Jetty setup for the next 16 days.

We start on Wednesday the 29th of July with a solid pulse of energy. The water’s running a touch warmer than normal for this time of year, about 77°, which is nice. That first session Wednesday afternoon sees a 6ft SSW groundswell with a long 14-second period, and the wind is glassy from the west. The wave energy is way up there (1222) so there’s plenty of push. This is proper advanced reef-break territory, with very consistent waves and crowds possible. The swell direction lines up sweet with the optimum for this spot. This is a standout morning for any experienced surfer who wants clean, powerful lines.

Thursday the 30th starts with a morning lull as winds go a little cross, but the afternoon comes right back. Thursday afternoon we’re looking at glass again, with the swell jumping to 6ft and the period stretching out to a very long 16 seconds, giving it a proper groundswell feel. Combined energy is still pumping (1373). This is another top moment – clean faces, plenty of power, but with that long period, expect longer lulls between sets. Reefs like this handle it well.

Friday the 31st keeps it going. Morning is clean with a cross-off breeze, 6ft and a 16-second period. Afternoon glass comes back on though there’s a chance of rain showers. Still, the consistency is there: very consistent, and the wave energy stays high (1255–1305). Good quality for those who know the lineup.

Saturday the 1st of August brings two more glassy sessions, morning and afternoon, with 6ft SSW swell at 14–15 seconds. The energy is peaking slightly (1447 in the morning). This is the best run of the week – clean, strong, and dependable. Don’t sleep on it.

Sunday the 2nd of August – morning is glassy calm with 4ft and a long 15-second period, but the combined energy drops a bit (1041). Still very surfable, but the afternoon turns onshore and marginal, so aim for early.

Monday the 3rd sees a smaller trend setting in. Morning is still glassy with 4ft from the SW at 14 seconds, but by afternoon the wind shifts cross-onshore and the swell drops to 4ft. Energy falls to 591. Not the pick.

From Tuesday the 4th through to the end of the first week, the swell really fades. We get a run of knee-to-waist high stuff with periods that still look okay, but the energy drops to the low hundreds and the wind isn’t always kind. There’s the odd glassy window – like Wednesday the 5th afternoon with 3ft and a 15-second period (energy 509) – but it’s inconsistent and small.

Around Saturday the 8th of August, we get a weird little blip: a glassy afternoon with 4ft from the SE, but only a 7-second period. That’s short-period windswell, not the same quality as the previous SSW groundswell. It’s rideable but not the standout.

Then Sunday the 9th of August morning brings a glassy 3ft SW swell at 14 seconds, with a calm wind and decent energy (529). Worth a paddle for sure.

Now here’s the real standout in the back half: Monday the 10th of August. We’ve got a 6ft SW groundswell with a massive 17-second period, and the combined energy hits 1803. That’s strong, deep ocean energy. The catch is that the morning has onshore wind and the afternoon is cross-onshore. The wind is not clean, so the quality suffers. For experts only at this size, and only if you’re willing to deal with some chop. The long period will make it bend and feather at a reef like this, but it won’t be pretty.

After that, the swell backs off again quickly. Tuesday the 11th and Wednesday the 12th have some promising glassy or clean windows with smaller 3–4ft swell at 15–16 seconds, and energy in the 500–800 range. Good, but not epic.

By Thursday the 13th of August, it’s pretty much done – small, onshore, and choppy. That’s us for the window.

If you’re picking the true standouts, it’s Wednesday afternoon the 29th of July through Saturday the 1st of August. Glassy, consistent, proper groundswell, and the swell direction matches what Black Rocks Jetty loves. Don’t miss that window.

Stay sharp,
Rusty

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