Kewalos Surf Forecast and Surf Report

Alright, gather 'round. Rusty here. Let's have a look at what's on the table for this stretch of coast.

Overall, the next sixteen days are a bit of a mixed bag. We've got a lot of cross-offshore winds, which will keep the surface clean, but the real issue is that the swell is all over the place and mostly pretty weak. The standout window looks like it's going to be towards the end of the second week, but even that comes with some healthy wind.

We'll start at Kewalos (United States), a reef set-up for the advanced crew. The water is sitting at about 81°F, which is pretty standard for this time of year.

The first few days are really not worth getting excited about. Friday the 11th has a small 4ft swell from the ENE with a period of 11 seconds and moderate energy (655), but the wind is a stiff 16 mph cross-off. It's clean, but it's a marginal call with questionable tides. Saturday the 12th starts even smaller with a 2ft SW groundswell—a 15-second period, but only 370 energy. Saturday afternoon picks up a tiny bit with a 2ft, 16-second period swell, but again, it's small. Sunday the 13th and Monday the 14th are practically flat with poor surf conditions and less than 300 energy. This run of weak, small surf runs right through until Thursday the 18th, with most days just offering marginal conditions at best. The energy does build a bit mid-week, hitting 861 on Wednesday the 16th with a 3ft swell, but it's still just a marginal call.

Now, the first real change comes on Thursday the 17th of September. The swell jumps up to a solid 7ft from the ENE, but the period drops to a short 8 seconds. The combined energy is strong (1056), but that short-period stuff is a bit messy and fat. The wind is a strong 19-22 mph cross-off, so while it's clean, the current will be a hassle. That's a session for experienced paddlers only, as 7ft to 7ft is pushing into expert territory. Friday the 18th drops back to 3ft from the SSW with a 17-second period, giving it a bit more push, with energy still high (1066-1183), but again, fresh cross-off winds.

For the second week, the pattern holds: clean but not great. The best shout in the whole 16-day window looks to be Wednesday the 23rd of September. We see a 6ft ENE swell with a 9-second period, and the combined energy surges to 1290. That's the strongest, most consistent push of the whole forecast. The wind is still a fresh 19 mph cross-off—it's not glassy, but it's side-offshore so the waves should hold their shape reasonably well. For a reef break that prefers a touch of size, this is the pick of the lot, though still just a marginal call. Thursday the 24th holds similar size at 5-6ft from the East with 878 energy and lighter 12 mph cross-off wind, making it a very close second option. Friday the 25th still has 5-6ft from the East (8 seconds), but the wind swings to a gentle cross-shore, introducing a slight chop.

Honestly, for the rest of the second week, it's a waiting game. The surf stays small and weak from the 26th, dropping back to 3ft from the SSW with choppy onshore winds. There's no real standout that justifies the paddle-out unless you're desperate for a clean, but small, wave.

Alright, stay safe out there. This is Rusty, signing off.

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