Nanakuli Blackrocks Surf Forecast and Surf Report

G’day, I’m Rusty.

Alright, let’s talk surf for Nanakuli Blackrocks over the next 16 days. The window kicks off Tuesday the 11th of August with some small, clean lines, but the energy builds nicely through the week and into the following one. Water temp is sitting at 81°F, which is about average for this time of year, so no surprises there.

The first real standout is Wednesday morning the 12th. We’ve got a 3ft swell coming from the south, with a very long 18-second period – that’s proper groundswell energy. Combined swell energy is sitting at 946 (moderate) and the wind is a clean offshore out of the ENE at 12 mph. That means glassy faces and good shape. Just keep in mind this is a spot that rarely breaks, so when it lines up like this, you want to be on it. There may be a few others out, but it’s well worth the wait.

Wednesday afternoon the 12th holds similar energy – 4ft from the south, 18 seconds, 1078 energy (strong) – but the wind picks up a bit to 16 mph, still offshore. Still very good.

Thursday the 13th morning sees a slight bump to 4ft from the south, 16-second period, with 883 energy (moderate) and clean offshore wind again. This is solid intermediate territory; the size is fine for most, but the wave quality should be top shelf.

Conditions start to fade Friday the 14th with fresher winds and a drop in period. By Saturday the 15th and Sunday the 16th, it’s pretty ordinary – smaller swell, cross-off winds, and even a risk of thunderstorms. Not worth paddling out.

Monday the 17th shows a bit of a rebound: 3ft south swell with light offshore breezes in the morning building to a gentle offshore in the afternoon. The afternoon session has 547 energy (moderate) and is looking very clean. A good sneaky option.

From Tuesday the 18th through Thursday the 20th, the swell drops to 2–2ft, but the winds stay offshore. The 20th morning is especially clean with a light breeze and a long 18-second period – 245 energy (weak), but still fun for a longboard.

The real highlight, though, is the stretch from Saturday the 22nd to Monday the 24th. Saturday the 22nd morning shows a clean 2ft south swell with a 20-second period – that’s as long as it gets – and only 6 mph ENE wind. Energy is 527 (moderate). Sunday the 23rd morning pushes up to 4ft from the south at 16 seconds, with 771 energy (moderate) and glassy winds. Then Monday the 24th morning delivers the best of the whole forecast: 3ft from the SSW at 18 seconds, 1106 energy (strong), and moderate offshore wind. That’s excellent for experienced surfers, with beautiful shape and clean conditions. This is the one to circle.

Tuesday the 25th and Wednesday the 26th offer solid leftovers – 4ft and 3ft respectively, with long periods and clean winds – but the wind gets fresh again, so the quality drops a notch.

Given that Nanakuli Blackrocks rarely breaks, this is a rare and promising run. Get out there Wednesday the 12th and again Monday the 24th if you can.

Rusty.

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