Surf Forecasts:
Shark Island (Cronulla) surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 10AM (local time) - 4ft (1.2m), 9s period, S swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 7AM (local time) - 4.5ft (1.3m), 10s period, S swell with 367 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 4AM (local time) - 3.5ft (1.0m), 11s period with S 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 Sunday (Aug 23) at 4AM. The primary swell is predicted to be 1.0m and 11s period with a secondary swell of 0.6m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Shark Island (Cronulla) in the next 16 days are 1.3m 10s and forecast to arrive on Sunday (Aug 23) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Thursday (Aug 27) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 23rd Aug) | 3.5ft (1.0m) 11s |
| Best Surf | 10AM (Sun 23rd Aug) | 4ft (1.2m) 9s |
| Most Powerful | 7AM (Sun 23rd Aug) | 4.5ft (1.3m) 10s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Alright, Rusty here, lookin' at the charts for the next couple weeks. Let's get into it.
First things first, the water temp is sitting pretty average for this time of year, so no need to stress about a wetsuit call just yet.
We're looking at a bit of a slow start, but there's some real promise on the horizon. The standout window is the first week of September, and I mean, it's a proper standout. The call is for a solid pulse of S-SSE swell, and the winds are lining up to make it special.
For a couple of days, around the 30th of August, the energy starts to build, but the real magic is on the 1st of September. Tuesday morning, we've got a clean 6ft swell from the south, and it's glassy, with a light offshore wind. That's a session for the experienced crew, as it's a bit too big for the beginners. The wave energy is strong, you can feel it. That afternoon, it's still pumping at 6ft from the SSE, with a clean cross-off breeze. Then, the real gem is the 4th of September. Friday afternoon, Shark Island (Cronulla) is the place to be. It's a solid 10ft swell from the SSE, and the wind is light and cross-off, keeping it clean. The wave energy is through the roof, and this is a reef break, so it'll handle that size beautifully. This is a session for experts only, it's going to be powerful and it might be a bit of a paddle. But for the crew that knows what they're doing, it's going to be absolutely epic. This is the one to circle on the calendar.
Before that, there's a lot of average conditions. Most of the days from the 22nd of August through the end of the month are looking pretty ordinary. We'll see some small, weak swells, but the wind is often onshore or cross, making for choppy, poor surf. The 28th of August has a chance for a clean, surfable 3ft wave in the morning, but it's nothing to write home about. The 30th of August has a brief window of 5ft swell from the SSE in the afternoon, but it's still not the big one.
After that 4th of September beauty, it drops off again. The 5th and 6th of September are back to smaller, cleaner, but much weaker, ordinary conditions. The energy drops off, the swell backs off, and it's just your standard, run-of-the-mill small surf.
So, the story is simple: a lot of waiting for the big event on the 4th of September. The 1st of September is a solid runner-up, but that Friday is the real deal. Keep your eyes on that one.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Very mild (max 19°C on Sat morning, min 13°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Tue night. Warm (max 21°C on Tue morning, min 14°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
AM | PM | 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) | S 9 | S 8 | S 12 | S 9 | S 12 | S 10 | S 10 | S 10 | S 10 | NE 6 | NE 6 | ENE 7 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 8 |
Wave Graph | |||||||||||||||||||||
6 | 12 | 25 | 215 | 199 | 198 | 121 | 90 | 67 | 96 | 120 | 102 | 167 | 112 | 100 | 98 | 94 | 173 | 147 | 131 | 103 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross-off | on | cross | cross-on | on | cross | cross-on | on | cross-on | off | cross-off | off | glassy | on | cross-off | cross-off | on | off |
High Tide | 4:04PM1.30m | 5:01AM0.89m | 5:01PM1.35m | 5:53AM0.95m | 5:50PM1.41m | 6:35AM1.01m | 6:31PM1.48m | 7:12AM1.09m | 7:09PM1.53m | 7:47AM1.16m | 7:45PM1.56m | 8:21AM1.24m | 8:21PM1.56m | ||||||||
Low Tide | 11:13PM0.45m | 10:15AM0.55m | 00:02AM0.38m | 11:12AM0.51m | 00:42AM0.31m | 12:01PM0.44m | 1:16AM0.24m | 12:44PM0.38m | 1:49AM0.18m | 1:24PM0.33m | 2:19AM0.14m | 2:04PM0.29m | 2:50AM0.12m | ||||||||
6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | |
— | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:32 | — | — | 5:32 | — | |
mm | — | — | 2 | — | — | — | — | — | — | — | — | 6 | 1 | — | — | — | — | — | — | — | 1 |
Temp °C | 19 | 18 | 16 | 16 | 17 | 15 | 18 | 18 | 17 | 21 | 20 | 17 | 17 | 17 | 16 | 18 | 17 | 16 | 21 | 21 | 17 |
Feels °C | 15 | 15 | 15 | 14 | 13 | 12 | 15 | 14 | 15 | 18 | 18 | 15 | 16 | 16 | 14 | 16 | 14 | 15 | 18 | 18 | 15 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | S 12 | S 9 | S 8 | S 10 | S 10 | S 10 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 8 |
6 | 6 | 25 | 215 | 121 | 198 | 121 | 90 | 67 | 51 | 58 | 102 | 167 | 112 | 100 | 98 | 94 | 173 | 147 | 131 | 103 | |
Swell 2 Height (m) Direction Period (s) | S 6 | S 8 | NE 6 | NE 6 | S 12 | ENE 4 | ENE 5 | S 18 | S 10 | S 9 | ENE 9 | S 8 | S 11 | S 11 | S 10 | S 6 | S 6 | S 7 | S 7 | S 7 | S 7 |
3 | 12 | 6 | 9 | 199 | 13 | 15 | 6 | 65 | 41 | 32 | 13 | 9 | 21 | 19 | 19 | 38 | 47 | 36 | 25 | 15 | |
Swell 3 Height (m) Direction Period (s) | S 9 | S 6 | S 4 | SSE 16 | — | ENE 9 | ENE 8 | — | ENE 9 | NE 9 | S 9 | S 17 | S 15 | S 14 | — | S 10 | S 10 | S 13 | S 9 | S 11 | S 9 |
6 | 2 | 3 | 53 | — | 7 | 6 | — | 8 | 22 | 25 | 22 | 18 | 16 | — | 17 | 17 | 31 | 15 | 20 | 15 | |
Wind waves Height (m) Direction Period (s) | W 2 | SE 2 | SE 3 | — | NE 9 | — | NE 5 | ENE 5 | — | NE 6 | NE 6 | N 2 | — | E 3 | SSW 3 | — | — | — | — | — | — |
1 | 1 | 3 | — | 20 | — | 38 | 35 | — | 96 | 120 | 1 | — | 2 | 2 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 226 | 361 | 18 | 0 | 5 | 1 | 1 | 137 | 1 | 1 | 1 | 15 | 0 | 0 | 0 | 0 | 15 | 0 | 0 | 1 | 0 |
Best forecast wave conditions in Sydney South Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











