Shark Island (Cronulla) Surf Forecast and Surf Report

G’day, Rusty here, and I’ve been staring at the charts for Shark Island (Cronulla) for the next couple of weeks. It’s a tricky stretch ahead, with a few serious pulses of energy but the wind is going to be our biggest fight. Let’s get into it.

The first week is mostly a write-off. We’ve got a few days of tiny, weak swell and poor conditions. From Tuesday the 1st to Saturday the 5th, there’s nothing worth suiting up for. The swell is all under 3 ft, mostly from the south, with energy sitting in the weak to moderate range (the numbers are low, like 225 down to 59). The wind is all over the shop – cross-on, cross-off, onshore – and it’s making the surface a mess. You’re better off doing something else.

Then, on Sunday the 6th of September, there’s a glimmer. The morning shows 5 ft of S swell with a period of 11 seconds, and the combined energy jumps to a solid 549 – that’s moderate to strong. The wind is glassy, completely calm. This is the standout early in the period. The water temp is 63°, which is about average for this time of year, no drama there. For a reef break like this, that long period (11 seconds) and clean conditions will produce some proper, well-shaped lines. Just be aware, crowds are *sometimes* an issue here, so get in early.

The middle of the week blows out again. Monday and Tuesday are a mess of cross-on and onshore winds, with the swell around 3 ft to 4 ft. Not worth it.

Then, we get to Wednesday the 9th of September. The afternoon session shows a solid 7 ft S swell, with strong energy (791), but it’s cross-off wind from the WNW at 12 mph. It’s clean, but the size is getting into the “too big for beginners” territory. The next day, Thursday the 10th, is a full-on beast. The swell jumps to 13 ft in the morning and 12 ft in the afternoon, with combined energy up in the thousands (2899 and 2184). That’s expert-only territory, and the wind is cross-on and cross – it’s going to be lumpy and messy. This is more of a spectacle than a paddle.

Now, the real highlight. Friday the 11th of September. The morning has 10 ft of SSE swell, with a very long period of 13 seconds, and energy is massive (3449). The wind is light cross-off, so it’s clean but a challenge. The afternoon, though, is the pick of the entire forecast. The wind goes dead calm – glassy. The swell is still 10 ft, period 13 seconds, and the energy is 2593. Conditions are “excellent for experienced surfers.” This is a proper groundswell event. For a reef point like Shark Island, that long period will carve up beautifully. Only experts should be out here, but if you’ve got the skills, this is the session. Crowds are a possibility given the quality.

Saturday the 12th is still big, with 12 ft and 8 ft, but the wind is howling – strong offshore in the morning (25 mph from the SSW) and then a strong cross-off in the afternoon. It’s clean but hard work.

The second week settles down. Sunday the 13th and Monday the 14th have smaller, cleaner windows. The Monday morning glass-off with 5 ft from the ESE at 11 seconds is a nice, mellow option for the morning crew. The energy is 576 – solid. After that, it’s a mix of ordinary conditions and small swell through to Wednesday the 16th.

Bottom line: The best bet is the glassy morning of Sunday the 6th for a clean, fun session. The absolute standout is the afternoon of Friday the 11th – a true, big, clean groundswell for the experienced crew. The rest of the window is mostly a battle with the wind.

Rusty.

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