Kahului Harbor Surf Forecast and Surf Report

Alright folks, Rusty here with a look at what’s cooking for Kahului Harbor. I gotta be straight with you from the get-go: this stretch is pretty grim for a solid week and a half. We’ve got a long gap of flat, wind-affected junk before anything worth paddling out for shows up.

The story is a persistent moderate cross-onshore breeze, mainly from the ENE, that just won’t let up. It’s gonna keep the surface bumpy and messy. The water temp here is sitting at 79.7°F, which is about 0.5°F cooler than average for this time of year – nothing to write home about, just your standard tropical bath.

First up, Thursday the 10th, we get onshore slop. 4.3ft of short-period ENE swell at 7 seconds, with a cross-onshore wind. The combined swell energy is weak at 275. That’s a paddle into whitewash, not a wave. This theme sticks for days.

We finally start to see a pulse of better energy building around Wednesday the 23rd. That morning, we've got 5.6ft of ENE swell, but now the period stretches out to 12 seconds – that’s proper groundswell. The combined energy jumps to a solid 813. The wind is still a cross-onshore, but a lighter 9 mph. It's going to be a bit lumpy, but the power is there for an advanced crew.

Now, the standout window is Thursday the 24th through Friday the 25th. On Thursday morning, we see 4.9ft of ENE swell at 10 seconds, with a light 6 mph E breeze going cross-shore. That’s the cleanest wind we’ve seen all forecast, giving us small crossing wind ripples and way better shape. Energy is moderate at 501.

But if I had to pick one real winner, it’s Friday the 25th afternoon. The swell has backed off a touch to 3.9ft, but the period is still a solid 9 seconds, and wind goes cross-offshore from the ESE at a glassy 6 mph. The combined swell energy is a moderate 328. That’s clean, lined-up reef waves. The break is Kahului Harbor, a reef setup that handles these longer-period groundswells well. It’s an advanced wave, and with the word that it can get busy, expect a few heads out for this one.

Honestly, for the first week and a half, don’t bother. It’s a write-off. The last two days are where the hope is. Friday afternoon the 25th is the call if you can wait.

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