Mangamaunu Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it.

We’ve got a classic 16-day window on the cards and straight off the bat, there’s a heater lined up. The standout is Mangamaunu, a heavy, advanced point break that’s ready to go from Sunday, August 2nd. The water is sitting at 51.4°F which is pretty much normal for this time of year, so no surprises there.

Sunday morning kicks things off with a clean 6ft swell from the SSE, a long 11-second period, and a glassy, offshore WNW breeze at just 3 mph. The combined energy is a solid 1151 (moderate), and the conditions are pure silk. This is excellent, but it’s only for experienced surfers – the power is real and the take-off zone is demanding. The afternoon goes cross-onshore with a NE breeze, so the morning is the window.

Monday, August 3rd is a step down in size to about 3.3ft, but the quality is still there. A light offshore breeze on the morning session keeps it tidy, and the swell direction is still SSE with a good 11-second period. It’s a fun, manageable day for anyone comfortable on a point.

Tuesday, August 4th is where things get serious. The swell jumps to a massive 15ft from the S with a 12-second period, and the combined energy explodes to 5952 (very strong). The wind is cross-off, but honestly, this is way too big for even the most experienced out there. This is straight-up, expert-only territory, and even then, it’s pushing the limits of what’s surfable here. Beginners, stay well clear.

Wednesday, August 5th sees the swell dropping to a still-chunky 10ft, with a clean offshore wind from the WSW. The energy is 2296 (strong). This is excellent for the advanced crew, but the size is still intimidating. It’s a raw, powerful day.

Thursday, August 6th through Saturday, August 8th settles into a solid run of clean, glassy conditions. Swell sits around 4ft to 4.5ft, mostly from the SE with periods around 10-12 seconds. The wind is virtually non-existent or light offshore. The combined energy dips to between 373 and 928 (weak to moderate). This is where the quality meets accessibility. The morning sessions are pure gold for intermediate and advanced surfers alike.

Sunday, August 9th has a beautiful, glassy morning with a 3.5ft swell from the SSE and a very long 15-second period. The energy is 664 (moderate). The long period means the wave will be lined up and powerful, but the sets will be spaced out. It’s a rippable point, so that long period is a treat here.

Monday, August 10th through Tuesday, August 11th keeps the glassy theme going with 4.3ft to 4.5ft swells, mostly from the SE and SSE. The early mornings are calm and clean. The long period (13 seconds) on Tuesday morning adds extra punch. Stick to the dawn patrol.

From Wednesday, August 12th through Thursday, August 13th, the swell winds down significantly. We’re looking at 1ft to 2.5ft with very low energy (72 to 170). It’s glassy, but barely surfable. A bit of a lull.

Friday, August 14th and Saturday, August 15th bring a small pulse of 3ft to 4.5ft from the ENE and E, with short, weak periods around 7-8 seconds. The energy is low (216 to 395). It’s clean and glassy, but the waves are fat and weak. Good for a longboard if you’re desperate.

Sunday, August 16th has a morning window with a 3ft swell from the SSE and a 12-second period, with glassy conditions. The energy is 289 (weak). The afternoon goes cross-onshore and choppy, so again, morning is the only option.

Monday, August 17th is a flat, fading day with 1.3ft to 2ft waves and almost no energy left (38 to 105). The season is winding down on this one.

The best of the best is undoubtedly the Sunday, August 2nd morning session – that combination of 6ft, long period, offshore wind, and glassy water is a true standout. The Tuesday, August 11th morning is also a top-tier pick for its size, period, and glassy conditions. Everything else is fun, clean, but not life-changing.

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