Surf Forecasts:
Shark Island (Cronulla) surf forecast from 30 Aug 2026:
- Best quality surf: Monday 31 Aug, 1AM (local time) - 3.5ft (1.0m), 9s period, S swell with glassy winds.
- Most powerful swell: Sunday 6 Sep, 10AM (local time) - 3.5ft (1.1m), 12s period, S swell with 342 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 10PM (local time) - 3.5ft (1.0m), 9s 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 30) at 10PM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.4m and 8s. 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 1.1m 12s and forecast to arrive on Sunday (Sep 06) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Saturday (Sep 05) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 30th Aug) | 3.5ft (1.0m) 9s |
| Best Surf | 1AM (Mon 31st Aug) | 3.5ft (1.0m) 9s |
| Most Powerful | 10AM (Sun 6th Sep) | 3.5ft (1.1m) 12s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s in store for Shark Island (Cronulla).
Right off the bat, the first nine days are a write-off. Water temp is about 62°, which is just under a degree cooler than the norm – no big deal but a little fresh. You’ll see tiny swell, from 1ft to 3ft at best, but the wind is mostly cross-on or onshore, often gusty, and the surf is just poor.
Sunday August 30th morning has a 3ft south swell, 9-second period. The wind is light cross-offshore from the WNW, so it’s clean, but the combined energy is only 251. It’s rideable but totally average. That afternoon goes to a cross-shore ESE breeze at 15 km/h and the quality disappears.
Thursday September 10th morning is the big one. Swell hits 12ft from the south, 13-second period – that’s serious groundswell. Combined energy is massive at 5594. The wind is light offshore from the southwest at 10 km/h, so it’ll be glassy. This is a reef break, and with that long period, it’ll groom nicely. But 12ft is expert-only territory.
Friday September 11th morning stays strong with 8ft south swell, 12-second period, and light offshore WSW wind. Combined energy is 1834. Another excellent window for advanced surfers.
After that, it drops off fast. Saturday 12th is down to 4ft with a messy cross-shore, and by Sunday the 13th you’re back to small, choppy junk. Your best bet is that Thursday-Friday window.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Tue afternoon, min 12°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Wed morning, min 13°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 9 | S 9 | S 8 | S 9 | S 9 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | S 10 | SSE 18 | S 10 | S 10 | S 10 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 132 | 123 | 175 | 111 | 99 | 133 | 146 | 143 | 100 | 77 | 75 | 50 | 50 | 50 | 31 | 123 | 62 | 98 | 65 | 48 | 50 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | glassy | cross-on | on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | on | cross | cross-on | cross-off | off |
High Tide | 9:35PM1.46m | 10:07AM1.41m | 10:15PM1.37m | 10:47AM1.44m | 11:01PM1.26m | 11:33AM1.44m | 11:54PM1.14m | 12:27PM1.43m | 1:01AM1.04m | 1:31PM1.43m | 2:23AM0.97m | 2:45PM1.44m | 3:51AM0.97m | ||||||||
Low Tide | 3:27PM0.25m | 3:53AM0.14m | 4:12PM0.26m | 4:27AM0.19m | 5:02PM0.29m | 5:05AM0.26m | 6:00PM0.32m | 5:50AM0.33m | 7:08PM0.35m | 6:45AM0.41m | 8:29PM0.35m | 7:55AM0.47m | 9:51PM0.31m | ||||||||
 | |  | | | | | |  |  | | | | | | | | | |  | | |
 | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — |
 | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 17 | 15 | 14 | 17 | 17 | 16 | 22 | 25 | 20 | 27 | 26 | 21 | 23 | 22 | 17 | 19 | 18 | 16 | 24 | 17 | 15 |
Feels °C | 15 | 13 | 14 | 13 | 13 | 15 | 18 | 21 | 16 | 23 | 23 | 17 | 18 | 19 | 12 | 15 | 13 | 15 | 17 | 9 | 6 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 8 | S 9 | S 9 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 5 | S 10 | S 8 | S 10 | S 10 | S 10 | S 10 |
| kJ | 132 | 123 | 175 | 111 | 99 | 133 | 146 | 143 | 100 | 77 | 75 | 50 | 50 | 50 | 14 | 123 | 28 | 98 | 65 | 48 | 50 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 9 | SSE 18 | SSE 15 | SSE 16 | NE 4 | ENE 9 | ENE 5 | ENE 6 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SSE 10 | ENE 10 | SSE 18 | NE 5 | NE 5 | NE 5 | ENE 6 |
| kJ | 94 | 52 | 102 | 74 | 50 | 5 | 15 | 14 | 23 | 33 | 33 | 19 | 18 | 19 | 31 | 19 | 62 | 16 | 8 | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | ENE 9 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 11 | ENE 11 | ENE 10 | NE 6 | NE 6 | SSE 13 | NE 5 | NNE 6 | ENE 10 | S 19 | SSE 12 | ENE 9 | E 9 | E 9 | E 11 |
| kJ | 25 | 24 | 14 | 17 | 16 | 15 | 12 | 37 | 34 | 11 | 5 | 17 | 5 | 4 | 19 | 28 | 14 | 9 | 7 | 7 | 9 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 3 | NNE 4 | NNE 4 | NE 5 | NNW 3 | NW 3 | — | NNW 2 | WSW 3 | SSW 6 | WSW 3 | — | ENE 3 | — | NW 3 | WNW 4 | WSW 3 |
| kJ | — | — | — | — | 3 | 10 | 3 | 49 | 4 | 2 | — | 1 | 4 | 14 | 4 | — | 9 | — | 9 | 31 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 1 | 60 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 85 | 1 | 85 | 225 | 29 |
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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