Shark Island (Cronulla) Surf Forecast and Surf Report

G'day, Rusty here. Look, straight up, this 16-day window is a tough one for Shark Island (Cronulla). There's a long, frustrating gap of small, poor-quality surf and onshore winds that'll have you sitting on the beach more than in the water. The first real glimmer of something decent doesn't show up until Friday morning, August 14th, but even then it's a mixed bag.

The ocean's been flat and messy. The water temp is sitting at 62°F which is pretty normal for this time of year. You've got a week of tiny waves, mostly under 3ft, with cross-off or onshore winds. The combined swell energy is weak, barely cracking 100 (22 to 175), so the ocean's got no push.

Things start looking interesting from Thursday, August 13th. The morning is just ordinary – small 2ft swells from the east with a gentle offshore, but it's the afternoon that piques my interest. A solid 4ft south swell rolls in with a 13-second period (getting into that long-period groundswell territory) and the combined energy jumps right up to 425. The wind is cross-shore though, which will put a bit of a chop on the face, so it's still a marginal call.

Now, the standout. Friday morning, August 14th – lock it in for the best surf on offer. We've got a 5ft south swell, period of 11 seconds, and the combined energy hits a strong 681. The wind is a light west-southwest, just a cross-off breeze, keeping the surface clean. This is where Shark Island really shines, that reef setup loves a solid south pulse. Just be aware, on a 5ft south swell at this point, it's getting into the territory where it's not for the beginners; it'll have some punch. Crowds are always a possibility here, so get in early.

The quality drops off pretty quick after that. Saturday morning, August 15th, has a very weird 1ft swell with a 23-second period – that's a super long, drawn-out groundswell. The energy is there (338), but with such a long period, it'll suck the banks dry and break straight as a pencil at the main peak. It'll be clean with a light south wind, but likely not offering much rideable face.

Sunday morning, August 16th, gives you a glassy 4ft south swell. It's almost perfect wind-wise, but the combined energy is only 259 (moderate), and the conditions are described as "surfable but very ordinary." The afternoon onshore wind trashes it.

For the rest of the second week, from the 17th onwards, it's back to small, weak, and choppy. The swells drop under 3ft, the combined energy fizzles out to two-digit numbers, and the winds go onshore again.

Bottom line: If you've got a board, Friday morning, August 14th is your only real ticket. Get down there for the clean, 5ft south swell. Everything else in this outlook is a write-off unless you're just keen for a paddle in ordinary slop.

Rusty.

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