Surf Forecasts:
Shark Island (Cronulla) surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 4AM (local time) - 2ft (0.6m), 11s period, ESE swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 4ft (1.2m), 10s period, E swell with 262 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 4AM (local time) - 2ft (0.6m), 11s 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 4AM. The primary swell is predicted to be 0.6m and 11s period with a secondary swell of 0.7m and 8s. 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 0.5m 3s period and expected on Tuesday (Aug 25) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 19th Aug) | 2ft (0.6m) 11s |
| Best Surf | 4AM (Wed 19th Aug) | 2ft (0.6m) 11s |
| 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
G’day, Rusty here. Lookin’ at the next couple weeks for Shark Island (Cronulla), and it’s been dead quiet for a long stretch, but the tail end’s got some serious grunt comin’.
From Tuesday the 18th of August straight through to the end of the month, it’s flat or close to it. Swells from 0.6ft to 3ft, weak periods, combined energy mostly under 100 – barely a ripple. Winds have been onshore or cross-onshore most days, keeping it messy. A few clean windows pop up, like Friday the 21st with a light cross-offshore breeze, but the swell’s barely a foot. Saturday the 22nd morning offers offshore wind and clean conditions, but that swell’s only 1ft. You’re lookin’ at nearly two weeks of hardly any surf.
Then things wake up proper on Monday the 31st of August. The morning brings 7ft from the south, period 10 seconds, combined energy at 804, and a cross-offshore wind – clean but a little bumpy. The real winner is Monday afternoon though. Swell hits 8ft out of the south, still 10 seconds, and combined energy jumps to 2348. Winds are light and cross-offshore – that’s glassy. Excellent surf but for experienced surfers only. Beginners, stay on the sand.
Tuesday the 1st of September keeps the juice. Morning has 10ft south swell with a 10-second period, offshore wind from the WSW, and combined energy at 1740. That’s powerful, clean, and expert territory. The afternoon holds the same size but wind goes cross-shore and energy drops a hair, so the morning is the pick.
Wednesday the 2nd of September eases a bit – 6ft to 7ft from the SE and SSE, light winds, combined energy still strong around 1211 to 1355. Might be a bit off-direction for Shark Island, but there’s waves to be had.
The clear standout is Monday afternoon the 31st of August and Tuesday morning the 1st of September. Big south groundswell, clean winds, serious energy. Crowds can pop up here sometimes, but with that size, it’ll be the dedicated crew only. If you’ve got the skills, mark those days.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Thu afternoon, min 13°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Fri morning, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | ESE 7 | ESE 7 | ESE 11 | ESE 10 | E 10 | ESE 9 | ESE 7 | E 6 | ENE 6 | ENE 7 | ENE 6 | ENE 6 | NE 6 | S 8 | S 9 | SSE 18 | S 14 | S 10 | S 10 | S 10 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 79 | 77 | 102 | 82 | 262 | 70 | 41 | 60 | 48 | 50 | 30 | 13 | 8 | 12 | 6 | 31 | 36 | 50 | 47 | 47 | 40 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross | on | cross-on | cross-on | on | cross-off | cross-off | cross | cross-off | off | cross | glassy | cross | on | cross-on | cross | cross-on | cross-on |
High Tide | 12:12PM1.34m | 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 | 6:34PM0.43m | 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 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — |
 | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 11 |
Temp °C | 16 | 16 | 16 | 17 | 17 | 15 | 19 | 20 | 18 | 20 | 18 | 17 | 17 | 16 | 16 | 17 | 17 | 16 | 23 | 23 | 16 |
Feels °C | 13 | 13 | 15 | 15 | 13 | 13 | 15 | 19 | 17 | 19 | 16 | 14 | 14 | 13 | 16 | 15 | 14 | 14 | 21 | 20 | 13 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | S 11 | ESE 8 | ESE 7 | ESE 10 | ENE 5 | ESE 7 | E 11 | ENE 6 | ENE 7 | ESE 7 | ENE 6 | NE 6 | S 8 | S 4 | S 5 | S 9 | ENE 5 | S 10 | S 10 | ENE 6 |
| kJ | 79 | 55 | 83 | 69 | 235 | 37 | 41 | 2 | 48 | 50 | 5 | 13 | 8 | 12 | 6 | 4 | 23 | 15 | 47 | 47 | 26 |
Swell 2 Height (m) Direction Period (s) | S 11 | ESE 14 | ESE 11 | ESE 10 | S 8 | ESE 9 | ENE 6 | — | E 10 | S 11 | S 11 | S 5 | S 5 | ENE 6 | ENE 6 | S 9 | S 14 | S 10 | NE 5 | E 13 | S 9 |
| kJ | 55 | 61 | 102 | 82 | 6 | 70 | 20 | — | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 14 | 36 | 50 | 6 | 3 | 40 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | E 9 | S 10 | S 8 | — | S 8 | E 11 | S 13 | S 12 | S 11 | S 11 | SE 7 | S 9 | S 4 | S 9 | SSE 18 | E 7 | ENE 8 | NE 8 | E 13 | ENE 9 |
| kJ | 10 | 7 | 30 | 19 | — | 5 | 2 | 3 | 3 | 2 | 2 | 2 | 6 | 1 | 6 | 31 | 1 | 7 | 15 | 3 | 8 |
Wind waves Height (m) Direction Period (s) | — | ESE 7 | — | — | E 10 | NE 5 | — | E 6 | — | WSW 2 | ENE 6 | — | SSW 5 | — | — | — | ENE 9 | NNE 5 | — | ENE 8 | NNW 3 |
| kJ | — | 77 | — | — | 262 | 69 | — | 60 | — | 1 | 30 | — | 4 | — | — | — | 30 | 39 | — | 45 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 2 | 1 | 1 | 433 | 1 | 1 | 61 | 1 | 1 | 7 | 302 | 210 | 717 | 210 | 1 | 282 | 1 | 1 | 1 | 15 |
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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