Nanakuli Blackrocks Surf Forecast and Surf Report

Alright, Rusty here. Let's get into it for Nanakuli Blackrocks.

We got a bit of a slow start, but there's some fun, clean surf on the horizon. The biggest standout is gonna be way out there on Sunday the 27th of September, so we got a long stretch to work through first.

The water temp's about normal for the time of year right now, sitting at 82°.

Alright, the first session we can look at is this Saturday the 12th. It's early, it's small. We're looking at a 2ft swell from the SSW with a very long 16-second period. The combined energy is moderate (257). What makes it worth a mention is that glassy, offshore breeze—dead clean. It's a spot that rarely breaks, so to see it with a clean surface is a real treat. You might score a sneaky little wave if you're on it.

Saturday afternoon and Sunday drop off even more, with 2ft and 1ft swells. The energy is weak to moderate (124, 106, 84). It's glassy again, but it's just too small to get excited about.

Monday the 14th and Tuesday the 15th pick up just a touch. We're seeing 1ft to 3ft swells from the SSW and SW. The period is still long, and with a light offshore breeze, it stays clean. The energy on Tuesday morning gets up to a moderate 490.

Wednesday the 16th is where things start to look more solid. The morning has a 3ft SSW swell with a 18-second period and a moderate to strong energy reading of 541. The wind is a fresh offshore from the ENE at 12 mph, so it'll be clean and lined up. The afternoon wind picks up to 19 mph though, making it a bit more of a handful for paddle surfing, but still clean. Thursday follows a similar pattern.

Friday the 18th is a notch up. We got a 4ft SSW swell with a 17-second period, and the energy jumps to a strong 734 in the morning and stays strong at 675 in the afternoon. The wind is a clean cross-offshore, so it's not perfect, but the extra size and push are there.

Saturday the 19th holds at 3ft from the SSW with a 16-second period and strong energy (543-555). Still clean with a light cross-offshore breeze. Consistent, clean, and head-high for a spot that's rarely breaking.

From there into the second week, it's a lot of smaller, cleaner days with offshore winds. Mostly 2ft to 3ft swells from the S and SSW. The energy stays moderate, and the conditions are good, but nothing that screams "go now."

Now, here's the one. Sunday the 27th of September. This is the true standout. The morning brings a 4ft swell from the NNW with a very long 17-second period and an energy reading of 1157 (strong). The afternoon gets even better: a 5ft swell from the same direction with a massive 1450 energy reading. The wind is a solid offshore from the ENE at 12 mph all day, keeping it clean. This ain't for beginners—over 5ft and it's pushing into expert territory for this setup. But for those who know what they're doing, that's as good as it gets. The direction is off the north-northwest, which works well for Nanakuli Blackrocks. It's a long-range call, so it's promising but less certain. Keep an eye on it.

The only other thing to mention is that the crowds can be a factor here at times, especially when the swell lines up.

Alright, that's the outlook. Keep it salty.

Rusty

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