Mangamaunu Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it. We’ve got a solid 16-day window, and it starts with a bang. The first call is a standout this week.

Imperial

The first surf on offer is at Mangamaunu (Kauai) kicking off on Tuesday, September 1st. This is a serious, expert-only point break, and it’s going to be pumping. The water temp is sitting around 52°, which is pretty much normal for this time of year. Tuesday morning is the real deal: a clean 12 ft swell from the S with a 12-second period, cross-offshore wind, and the wave energy is reading a massive 5957 (moderate energy). This is a heavy, hollow wave that will be running fast and clean. Don’t bother if you’re not a seasoned charger; the swell is well over 5 ft, so it’s for the crew.

Tuesday afternoon sees that swell back off a bit to 10 ft, but the wind switches cross-on, making it a bit messier. It’s still big, but the magic is definitely in the morning session.

Wednesday, September 2nd is another morning standout. We’re looking at a 8 ft swell from the S with a very long 15-second period, glassed off by a perfect 3 mph offshore wind. This is groundswell gold. The long period will let the sets march in with real power, and the point at Mangamaunu will handle it beautifully. The combined energy is still strong at 3002 (moderate). The afternoon goes glassy with a 7 ft swell. This is a top-tier day for the experienced crew.

From Thursday, September 3rd through to Sunday, September 6th, the surf drops off significantly. We’re talking waist-high dribble. The swell energy drops to double digits (64 to 126). It’s surfable, but not worth a trip. There’s a gap of clean, small waves.

Then Monday, September 7th gets a bit weird. The morning is a short-period 8 ft swell with a brisk cross-offshore wind, but the period is a pitiful 6 seconds. The afternoon is a massive 15 ft swell from the S, but the file says it’s predicted to be too big for this break. That’s a sit-and-watch day.

Now, Tuesday, September 8th through Thursday, September 10th brings a return to form. Tuesday morning is a beauty: 10 ft S swell with an 11-second period, glassy, and the energy is 4313 (moderate). This is another excellent day for the experts, with the swell over 8 ft. Wednesday morning is also a 10 ft swell with a 13-second period, glassy and clean.

The surf slowly fades over the next week, with swell heights dropping to 3 ft to 6 ft range. The conditions hold up, mostly glassy, but the energy is weak. By Saturday, September 12th, the afternoon gets blown out by a 22 mph cross-offshore wind, making it a bust.

The second week looks a bit more hopeful. Wednesday, September 16th (yes, that’s a full two weeks out) shows a promising 7 ft S swell with a 14-second period and glassy conditions. The energy is still moderate at 1537. It’s a long way out, but it has the potential to be another clean, powerful day at Mangamaunu for the experienced surfer.

The best on offer is the Tuesday, September 1st morning session, closely followed by the glassy Wednesday, September 2nd. If you’re a pro, get on it.

Rusty.

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