Nanwan Beach (South Bay) Surf Forecast and Surf Report

Alright, let’s get into it. Rusty here, bringing you the word on the waves for the next couple of weeks.

First off, I gotta be straight with you – the start of this outlook is a rough one. We’ve got a long, frustrating gap with no real surf to recommend. From now until the morning of Thursday, August 21st, the conditions are just plain ugly. There’s a lot of swell, sure, but it’s all blown to hell by strong winds. We’re talking near-gale force cross-offshores whipping up those swells, making a mess of things. The swell itself gets properly big – up to 15 ft on the 9th – but with those winds, it’s a total write-off for a paddle. Honestly, for a beach and reef setup like Nanwan Beach (South Bay), that kind of power with that wind is more of a kite surfer’s dream than a surfer’s. The combined wave energy hits some massive numbers (3784 on the 9th), but it’s all for nothing.

For days and days, it’s just poor surf with cross-off and cross winds, and even when the swell drops a bit, the conditions are still marginal at best. The water temp is pretty much average for the time of year at 85°, so at least you won’t freeze while you’re watching the chaos.

But hang in there, because the end of the tunnel is where the real deal shows up. Finally, on Friday, August 21st, things turn around. The wind drops right out, going light and cross-offshore from the WNW. The swell from the SSW starts to build proper, with a nice long period that hits 12 seconds – that’s a proper groundswell, full of energy. We’re talking 8 ft of clean, lined-up swell. The combined energy jumps to 1697, which is solid, and the forecast says it’s excellent for experienced surfers. This is the standout, no question. A long-period SSW swell like that, with glassy cross-offshore winds, will make Nanwan Beach (South Bay) an absolute gem. The sets will be clean, the waves will have shape, and the gaps between them will make paddling out a breeze. It’s the kind of session you wait for. Just keep in mind, with that kind of quality, the crowds are often an issue, so get in early.

The week before that, leading into the 21st, you’ll start to see the swell settle and the winds back off, but it’s still not worth getting too excited about. A few days in the second week show some marginal calls with clean surf, but the swell sizes are smaller and the energy is weaker. It’s a slow build to that Friday payoff.

So, the bottom line: the first three weeks are a write-off. Don’t even bother. But if you can hold out, Friday, August 21st is the golden ticket. The wind, the swell, the period – it all lines up. That’s your day.

Rusty.

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