Mangamaunu Surf Forecast and Surf Report

Alright, this is Rusty. Let’s talk about what’s on the menu.

We’re looking at a classic 16-day stretch for Mangamaunu, and honestly, it’s a bit of a mixed bag. The first week is pretty rough, with a lot of onshore junk and small, weak swell. But if you can hold out, the payoff is legit. The real standout action kicks off around Wednesday, August 19th, and runs through the weekend.

The water temp is about what you'd expect for this time of year, nothing too crazy.

Tuesday morning, August 11th, actually starts off pretty sweet. We’ve got a 6ft SSE swell with clean glassy conditions. That’s a fun little window, but it gets eaten up by a cross-on choppy mess by the afternoon. After that, it’s a rough patch. Wednesday the 12th through to Monday the 17th is mostly washed out by onshore wind and small, weak energy. There’s a brief reprieve Thursday afternoon, August 13th, with clean 5ft waves and glassy wind, but it’s not much.

From Sunday the 16th through Tuesday the 18th, the swell builds but the wind is a fresh breeze from the southwest, keeping things messy. Tuesday the 18th afternoon shows a solid 10ft S swell, but the energy is high (1396) and the wind is still strong cross-offshore. That setup looks more interesting for kite surfing than paddle surfing.

Now, here’s where it gets good. Wednesday morning, August 19th is a true standout. A clean 7ft S swell with a 14-second period and light offshore wind from the west. That’s a serious long-period groundswell, perfect for this point break. The energy is pumping (1849) and conditions are excellent. Thursday morning, August 20th, is another gem with a 7ft S swell, 14-second period, and complete glass. No wind. Just clean, powerful lines. Another standout.

Friday the 21st through the weekend keeps the quality high with 5ft to 5ft S swell, glassy conditions, and long periods. Expect very good surf for experienced surfers. Because this is a point break, that long-period energy will wrap in beautifully. Crowds are rare here, so you’ll have plenty of room.

Sunday, August 23rd afternoon gets a bit tricky – a huge 8ft SSE groundswell with a 16-second period (energy at 3258) but a light cross-onshore wind creates some ripples. That’s still a monster session for experts, but not as clean as the days before.

Heads up for the last week: the swell drops off quick. By Tuesday, August 25th, it’s small and weak again, and Wednesday the 26th is blown out. So if you want the best of this window, aim for that sweet spot from the 19th to the 22nd.

Rusty, out.

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