Surf Forecasts:
Shark Island (Cronulla) surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 7AM (local time) - 2ft (0.6m), 10s period, ESE swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 4ft (1.2m), 10s period, E swell with 267 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 7AM (local time) - 2ft (0.6m), 10s period with ESE swell.
Best Forecast Surf Conditions for Shark Island (Cronulla) this week:
The surf forecast for Shark Island (Cronulla) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 7AM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.8m and 7s. Another secondary swell of 0.8m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Shark Island (Cronulla) in the next 16 days are 1.2m 10s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Aug 25) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 19th Aug) | 2ft (0.6m) 10s |
| Best Surf | 7AM (Wed 19th Aug) | 2ft (0.6m) 10s |
| Most Powerful | 4PM (Wed 19th Aug) | 4ft (1.2m) 10s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Hey, Rusty here. Let’s be real—this 16-day stretch for our spot is mostly a dud, so don’t rush to wax up too soon.
The main story is a whole lot of small, clean conditions with no power. The only day that truly stands out is Saturday, August 29. That morning we’ve got a solid 13ft SSE swell hitting Shark Island (Cronulla). The wave energy is cranking at 2182 (very strong), but the wind is blasting 28 mph from the SSE, cross-off. That’s expert-only territory. Way too big for beginners, and the wind is howling, but for the crew that can handle it, there’ll be some raw, clean bombs. Afternoon drops to 12ft with still 28 mph SSE wind and energy at 1590—still massive, but only for the fearless.
Before that, it’s a long, flat wait. From Wednesday, August 19 through till Tuesday, August 25 morning, the swell barely gets above 4ft, with short periods (6 to 10 seconds), and combined energy mostly under 300 (weak to moderate). The wind’s usually cross-off or glassy on the mornings, but there’s simply no punch. There’s a tiny flicker on Tuesday, August 25 morning—2ft ENE swell, 9-second period, light W wind (cross-off), energy at 93—but conditions are only “surfable but very ordinary.” Not worth the paddle.
Wednesday, August 27 afternoon sees the swell bump to 5ft SE, 8-second period, with energy at 365 (moderate), but it’s onshore NNE wind at 9 mph, making it choppy. Not a good look.
Friday, August 28 morning brings 3ft ESE swell, 9-second period, light WSW offshore wind—clean but still ordinary.
Then comes Saturday, August 29—the one true standout I mentioned. After that, Sunday, August 30 is messy: 7ft SE swell, 8-second period, but 28 mph SE wind making a cross-shore mess (energy 603). Too blustery for good waves.
Monday, August 31 brings some long-period groundswell (16 seconds!) from the SSE at 2ft, but with 19 mph ESE wind and energy at 382. That long period means it’ll be straight and tricky at a reef setup like Shark Island, and the wind is lumpy. Not the day.
The rest of the window into early September stays small and mostly clean, but under 3ft and weak. Nothing to chase.
So, bottom line: wait for Saturday, August 29 morning if you’re an experienced charger, otherwise, this is a long flat spell. Keep an eye on the sky, because it can’t stay this quiet forever.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Thu afternoon, min 13°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Fri night. Warm (max 22°C on Mon morning, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | ESE 11 | ESE 7 | E 10 | NE 5 | ESE 6 | E 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | NE 6 | S 9 | S 5 | NE 9 | S 8 | S 10 | S 9 | S 9 | S 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 102 | 86 | 267 | 90 | 47 | 47 | 51 | 47 | 54 | 9 | 5 | 14 | 7 | 20 | 51 | 47 | 42 | 43 | 30 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | glassy | glassy | on | cross-on | cross | cross-on | cross-off |
High Tide | 00:22AM1.08m | 1:00PM1.31m | 1:18AM0.96m | 1:56PM1.28m | 2:30AM0.88m | 2:59PM1.27m | 3:51AM0.87m | 4:04PM1.30m | 5:01AM0.89m | 5:01PM1.35m | 5:53AM0.95m | 5:50PM1.41m | |||||||
Low Tide | 6:20AM0.40m | 7:39PM0.49m | 7:03AM0.48m | 8:53PM0.51m | 7:59AM0.54m | 10:10PM0.50m | 9:07AM0.57m | 11:13PM0.45m | 10:15AM0.55m | 00:02AM0.38m | 11:12AM0.51m | 00:42AM0.31m | |||||||
 |  | | |  |  |  | | |  | | |  | | | | | |  | |
 | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — |
 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — |
mm | — | — | — | — | — | — | — | — | — | 4 | — | — | 1 | — | — | — | — | — | 7 |
Temp °C | 16 | 17 | 17 | 16 | 19 | 20 | 18 | 20 | 17 | 16 | 18 | 16 | 16 | 17 | 17 | 16 | 22 | 21 | 19 |
Feels °C | 14 | 15 | 13 | 13 | 16 | 18 | 16 | 17 | 13 | 13 | 17 | 13 | 16 | 14 | 13 | 14 | 21 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 7 | S 8 | ENE 6 | ESE 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | S 9 | S 5 | SSE 5 | S 8 | S 10 | S 9 | S 9 | S 9 |
| kJ | 83 | 86 | 6 | 55 | 47 | 47 | 51 | 47 | 26 | 9 | 5 | 14 | 7 | 7 | 51 | 47 | 42 | 43 | 28 |
Swell 2 Height (m) Direction Period (s) | ESE 11 | ESE 10 | — | ESE 9 | NE 5 | E 10 | S 12 | S 11 | SE 7 | S 6 | SSW 5 | ENE 6 | ENE 6 | S 9 | S 15 | NE 4 | NE 8 | NE 9 | ENE 9 |
| kJ | 102 | 82 | — | 70 | 14 | 2 | 3 | 2 | 2 | 3 | 5 | 3 | 3 | 14 | 17 | 9 | 17 | 19 | 30 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 9 | — | S 8 | E 11 | — | — | — | S 11 | S 10 | S 9 | S 5 | S 9 | NE 9 | S 19 | NE 8 | ENE 4 | E 13 | E 5 |
| kJ | 30 | 24 | — | 5 | 2 | — | — | — | 2 | 2 | 2 | 2 | 6 | 20 | 7 | 18 | 2 | 3 | 4 |
Wind waves Height (m) Direction Period (s) | ENE 5 | ENE 5 | E 10 | NE 5 | NE 5 | NNW 2 | — | — | NE 6 | WSW 2 | W 3 | — | — | — | ENE 9 | NNE 4 | — | E 5 | — |
| kJ | 27 | 46 | 267 | 90 | 41 | 1 | — | — | 54 | 1 | 1 | — | — | — | 31 | 15 | — | 9 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 1 | 433 | 1 | 1 | 1 | 1 | 1 | 1 | 302 | 420 | 361 | 190 | 1 | 282 | 1 | 1 | 35 | 0 |
Best forecast wave conditions in Sydney South Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Shark Island (Cronulla) Surf forecast
The above surf forecast table for Shark Island (Cronulla) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shark Island (Cronulla) can be found by selecting the local surf guide option on the grey menu. Our Shark Island (Cronulla) surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Shark Island (Cronulla)) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Shark Island (Cronulla) may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Shark Island (Cronulla) is 2 km (1 miles) from Cronulla. If you plan a holiday in Sydney South Coast, look for hotels and other accommodation in Cronulla. Cronulla has rooms for a wide range of budgets as well as car hire and transport links.
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