Nanwan Beach (South Bay) Surf Forecast and Surf Report

Alright, this is Rusty comin' at ya from the South Bay.

Well, it’s a bit of a mixed bag lookin’ ahead at Nanwan Beach. We’ve got some decent swell energy on the horizon, but the timing and winds are gonna be the real deal-breakers for the next week or so. Water temps are sittin’ right around 84°, which is pretty much bang-on average for this time of year, so you won't need a thick suit, just a good rashie.

The first real glimmer of something worthwhile ain't until later on. We’ll be sittin' through a stretch of marginal to poor conditions from the 25th through into early September. There’s size, but the wind patterns are messy—gusty westerlies and onshores kickin’ up a chop and bringin’ a risk of storms. It’s not your call to be in the water then. The swell energy through this period is moderate, but the quality just isn’t there.

Now, things start to turn around on Thursday, the 3rd of September. The morning is lookin’ magic—dead glassy conditions with a light 6ft groundswell from the southwest and a period of 9 seconds. That glassy surface will have the waves lookin’ clean as a whistle. Thursday afternoon gets even better, with more energy and glassy conditions. This is a good session for the intermediate crew, no doubt.

But the true standout of the whole run is Friday, the 4th of September. This is the one. We get a solid pulse of 10ft swell from the southwest, with a period stretching to 12 seconds—that’s proper groundswell energy. The combined energy jumps up, and the winds are light and offshore out of the west. The waves will have some real punch and shape to ’em. Keep in mind though, this is only for experienced surfers; at 10ft, it’s gonna be beyond what beginners want to paddle into, especially with those long-period sets. The break is a beach and reef setup, and that long-period swell can sometimes make things a bit straight at beach breaks, but the offshore wind should help hold it together nicely. Expect crowds to be around—this spot gets busy when it’s good.

After that, the swell jumps up to a massive 18ft on the 5th and 6th, but frankly, that’s just too big for Nanwan Beach. The energy is insane, but it’s a danger zone, not a fun zone. That’s one for the big-wave chargers only, if they dare.

We wind down the outlook with the 7th into the 8th of September, where the size drops back to the 8ft to 5ft range. The 7th Monday morning looks really nice: 8ft of west swell with glassy conditions and a period of 10 seconds. That’s excellent for strong intermediates. By the 9th, it’s fadin’ out to small, ordinary waves.

So, to call it: Friday the 4th is your best bet by a long shot—big, clean, and powerful.

Rusty.

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