Surf Forecasts:
Shark Island (Cronulla) surf forecast from 21 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 7AM (local time) - 5ft (1.6m), 8s period, NE swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 10PM (local time) - 7ft (2.2m), 7s period, NE swell with 462 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 4AM (local time) - 4.5ft (1.3m), 8s period with ENE 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 26) at 4AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.3m and 8s. Another secondary swell of 0.3m and 3s 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 2.2m 7s and forecast to arrive on Tuesday (Aug 25) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Thursday (Aug 27) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 26th Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 7AM (Wed 26th Aug) | 5ft (1.6m) 8s |
| Most Powerful | 10PM (Tue 25th Aug) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve got to be straight with you – the next couple of weeks around Shark Island (Cronulla) are a tough watch. This is a reef setup that needs a decent southerly or south-east swell and clean conditions to really fire, and we’re just not getting that combo. The water temp is sitting at 62°, which is a touch below average for this time of year, so you’ll want a solid steamer.
The forecast kicks off on Friday the 21st with a small 3 ft wave from the north-east, but it’s coming with a glassy wind and the combined energy is only moderate (101). It’s surfable, but it’s ordinary. From Saturday morning the 22nd, we hit a flat spell with barely any wave energy – the swell drops to 1 ft and the wind is messy. This dry patch lasts right through to the morning of Sunday the 23rd, where we get a south swell building to 4 ft. The energy ramps up to moderate (257), but the wind is cross-shore from the north-west, so it’s choppy and poor. The onshore winds and crossed-up conditions just keep coming through the 24th, 25th, and into the 26th.
There’s a brief glimmer on Wednesday morning the 26th. We get a clean 4 ft south-west groundswell, with a moderate offshore wind from the south-west, and the energy is solid (204). The period is 8 seconds, so it’s a bit short and fat, but it’s the cleanest we’ll see for a while. It’s an advanced wave, so not for beginners. That’s the standout of the whole period, but it’s still just a “surfable but ordinary” moment.
After that, it’s more of the same. Thursday the 27th morning goes glassy with a 3 ft ENE swell, but the energy is still moderate (152) and the wave quality is poor. The following days through to the 5th of September are a mix of small swells, cross-shore winds, and onshore slop. There’s a moment on Tuesday the 1st of September morning with a 3 ft south swell and a light offshore wind, and the energy is moderate (220), but it’s again just ordinary. The long-range stuff towards the 5th of September has a south swell with a long period of 12 seconds and a 19 mph cross-offshore wind, but the swell is only 3 ft, and those strong winds are going to blow it out.
Honestly, there’s no proper standout here. The best bet is Wednesday the 26th morning, but even that’s a gamble. The rest is a flat, choppy mess. Keep an eye on the charts, but don’t hold your breath.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat night. Warm (max 21°C on Fri afternoon, min 13°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Tue night. Warm (max 22°C on Tue morning, min 13°C on Wed night). Winds decreasing (fresh winds from the NNE on Mon afternoon, calm by Thu morning). | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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) | NE 6 | NE 6 | S 9 | S 8 | S 12 | S 9 | S 12 | S 10 | S 10 | S 10 | ENE 6 | S 9 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 64 | 18 | 6 | 12 | 12 | 220 | 153 | 202 | 123 | 90 | 80 | 40 | 107 | 207 | 166 | 106 | 95 | 105 | 141 | 111 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross | cross-on | cross | on | cross-on | cross-on | on | cross-on | cross-on | cross | cross | off | cross | cross-off | glassy | cross-on | cross |
High Tide | 3:51AM0.87m | 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 | ||||||||
Low Tide | 10:10PM0.50m | 9:07AM0.57m | 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 | |||||||
 |  |  | |  | | | | | |  | |  |  | | | | | | | |
 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — |
 | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:32 | — |
mm | — | — | — | — | 3 | — | — | — | — | — | — | — | 3 | 4 | — | — | — | — | — | — |
Temp °C | 21 | 16 | 19 | 18 | 16 | 15 | 17 | 15 | 18 | 18 | 17 | 22 | 20 | 16 | 17 | 15 | 15 | 16 | 15 | 14 |
Feels °C | 20 | 12 | 15 | 15 | 15 | 14 | 14 | 12 | 14 | 14 | 14 | 19 | 17 | 13 | 13 | 11 | 13 | 13 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | ENE 6 | NE 6 | NE 6 | S 8 | SSE 4 | S 9 | S 8 | S 10 | S 10 | S 10 | ENE 6 | ENE 6 | S 9 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 |
| kJ | 35 | 18 | 6 | 12 | 5 | 220 | 127 | 202 | 123 | 90 | 80 | 29 | 25 | 207 | 166 | 106 | 95 | 105 | 141 | 111 |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | S 6 | NE 6 | NE 6 | NE 6 | S 12 | ENE 9 | NE 5 | S 18 | S 9 | S 9 | NE 9 | S 9 | S 11 | S 11 | S 10 | S 6 | S 6 | S 6 |
| kJ | 2 | 2 | 3 | 5 | 6 | 10 | 153 | 7 | 21 | 6 | 61 | 40 | 23 | 13 | 20 | 21 | 19 | 30 | 32 | 17 |
Swell 3 Height (m) Direction Period (s) | — | SE 8 | S 9 | E 9 | S 12 | SSE 17 | NE 9 | E 14 | ENE 8 | — | S 18 | NE 9 | S 15 | S 17 | S 15 | S 14 | — | S 10 | S 10 | S 9 |
| kJ | — | 2 | 6 | 2 | 12 | 27 | 20 | 4 | 6 | — | 6 | 21 | 18 | 22 | 18 | 15 | — | 17 | 16 | 14 |
Wind waves Height (m) Direction Period (s) | NE 6 | WSW 3 | — | — | ESE 4 | — | NE 6 | NE 4 | NE 5 | ENE 5 | — | — | ENE 7 | — | — | SSE 3 | S 4 | — | — | NNE 3 |
| kJ | 64 | 1 | — | — | 4 | — | 9 | 7 | 60 | 42 | — | — | 107 | — | — | 2 | 19 | — | — | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 192 | 302 | 282 | 15 | 1 | 5 | 1 | 1 | 147 | 1 | 15 | 1 | 1 | 0 | 46 | 0 | 0 | 132 | 1 |
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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