Shark Island (Cronulla) Surf Forecast and Surf Report

Alright, I’m lookin’ at the next 16 days for the Cronulla area, and honestly, it’s a pretty lean stretch. We’ve got a long, quiet gap to start, and then a few flashes of interest way down the line. Let’s break it down.

For the first week, from Monday the 31st of August all the way through to Saturday the 6th of September, the surf is just not happening. Those waves are small, weak, and the wind’s all over the place. We’re talking about knee-high slop, mostly cross-onshore or onshore, and the energy is barely registering – combined swell energy sits around 57 to 246 (weak to modest). The water’s sittin’ about average for this time of year, nothing wild. Honestly, it’s a total write-off for paddle surfing. If you’ve got a kite, maybe some of those breezy afternoons with stronger winds could be interesting, but for a surfboard? Nah.

Then we get a glimmer. Sunday the 6th of September morning is the first real standout. Shark Island (Cronulla) – this is the only spot we’ve got data for. Early Sunday morning, the wind goes glassy – dead calm, just a light westerly at 3 mph. That’s gold. The swell bumps up to 5 ft from the south, with a period of 10 seconds. Combined energy hits 377 (moderate, solid energy). Conditions are glassy and clean. The swell’s not huge, but for a reef break like Shark Island, this is a fun, rideable size. It’s a fairly exposed spot, and the optimum swell direction is SE, so that S swell is workin’ nicely. The break is rated for advanced surfers, and it’s fairly consistent. Crowds are possible here – it can get busy. But for that one morning window, this is the best on offer. The offshore wind direction is SW, so that westerly glass-off is perfect.

After that, the surf goes back to being ordinary. The rest of Sunday afternoon gets onshored, and Monday the 7th is choppy. Tuesday the 8th is clean but small – 3 ft, energy 262, surfable but nothing to write home about. Then Wednesday the 9th throws a big, raw swell at us – 10 ft from the south, period 10 seconds, combined energy a whopping 1928 – that’s strong to very strong energy. But the wind is cross-offshore from the SSE at 12 mph, and it’s rated as marginal. That’s big, lumpy, and probably only for the experts. The period’s short, so it’s gonna be a bit of a washing machine. Thursday the 10th and Friday the 11th are messy and weak again.

The second week keeps up the same theme. Saturday the 12th is small, then Sunday the 13th has clean but tiny waves – 3 ft, clean, but just not enough. Monday the 14th morning is glassy again but with only 2 ft – a flat glass-off. Then Tuesday the 15th morning brings a bit of a pulse: 8 ft from the south, period 8 seconds, energy 757 (moderate). It’s cross-on with a light northerly, so it’ll be a bit bumpy, but there’s size. Still, that’s a short period, so it’s gonna be fat and lumpy. Not a true standout.

So, if you’re lookin’ for the best wave, it’s that Sunday 6th September morning at Shark Island – glassy, clean, 5 ft south swell. That’s your moment. Everything else is a struggle or a wait. The gap at the start is nearly a week of nothing, and then it’s just a few scattered windows.

Rusty.

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