Surf Forecasts:
Shark Island (Cronulla) surf forecast from 17 Jul 2026:
- Best quality surf: Sunday 19 Jul, 10AM (local time) - 6ft (1.8m), 11s period, ENE swell with cross-offshore winds.
- Most powerful swell: Sunday 19 Jul, 7AM (local time) - 6ft (1.8m), 11s period, ENE swell with 778 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 1AM (local time) - 1.5ft (0.5m), 10s 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 Saturday (Jul 18) at 1AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.5m and 10s. 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 1.8m 11s and forecast to arrive on Sunday (Jul 19) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Jul 23) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sat 18th Jul) | 1.5ft (0.5m) 10s |
| Best Surf | 10AM (Sun 19th Jul) | 6ft (1.8m) 11s |
| Most Powerful | 7AM (Sun 19th Jul) | 6ft (1.8m) 11s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Alright, folks. Rusty here. Let's talk about Shark Island (Cronulla). This is a reef break, strictly for the advanced crew. The water is sitting at 62°, which is a bit colder than usual for this time of year.
The first couple of days are a total dud. Friday the 17th and Saturday the 18th are just small, scrappy waves. Not worth getting wet.
The real action shows up on Sunday morning, the 19th of July. Swell hits 6ft from the ENE with a solid 11-second period, packing a real punch. The combined energy is strong (860). That's a proper groundswell, and with a light SSE breeze holding cross-off, it’ll be clean. This is the standout. The reef will handle that long period, giving you powerful, lined-up waves. It’s 1.8m, so it’s getting up there – only for the experienced.
Sunday afternoon drops to 6ft, but the wind goes cross, so it'll get a bit bumpy. Monday morning, the 20th, is still a good look with 5ft from the ENE and a light WNW breeze – clean and cross-off. The energy is still strong (563). That’s a glassy morning session.
After that, it goes quiet. The rest of the month is small, with onshore winds and poor conditions. We get a big spike on Wednesday the 29th – 7ft from the S, but with a messy cross-shore wind and a short 8-second period. The energy is very strong (1125), but it’s just a blown-out, lumpy mess. Not good for the reef.
The 30th is still lumpy, and the 31st is a total write-off with a strong N wind at 25 mph and 8ft of swell. That’s wild and messy, with the wind ruining it.
Bottom line: The only real window is Sunday morning, the 19th of July, and into Monday morning, the 20th. That’s your clean, strong swell with good wind. The rest of the 16 days is mostly small, windy, or just average. Don't count on the second week.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Fri morning. Very mild (max 17°C on Sat afternoon, min 12°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Wed morning, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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 6 | E 7 | S 10 | S 10 | E 7 | E 8 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | S 8 | SSE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 74 | 53 | 50 | 51 | 91 | 266 | 749 | 598 | 533 | 416 | 363 | 380 | 307 | 307 | 218 | 172 | 121 | 94 | 73 | 539 | 160 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | glassy | cross-off | on | cross | cross | on | cross-off | cross-off | cross-off | off | cross-off | cross | cross-off |
High Tide | 10:40AM1.24m | 10:36PM1.66m | 11:28AM1.26m | 11:23PM1.50m | 12:16PM1.27m | 00:11AM1.33m | 1:05PM1.28m | 1:02AM1.17m | 1:57PM1.29m | 1:59AM1.03m | 2:51PM1.30m | 3:05AM0.94m | 3:46PM1.32m | ||||||||
Low Tide | 4:15PM0.29m | 5:17AM0.05m | 5:09PM0.34m | 5:58AM0.14m | 6:07PM0.41m | 6:38AM0.23m | 7:10PM0.47m | 7:19AM0.32m | 8:19PM0.51m | 8:02AM0.41m | 9:32PM0.51m | 8:50AM0.47m | 10:42PM0.48m | ||||||||
 | |  |  | | | | | |  | |  | | | | | | | | | | |
 | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 5:04 | — | — | 5:05 | — | — | 5:06 | — | — | 5:06 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — |
mm | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 15 | 15 | 16 | 15 | 15 | 15 | 15 | 19 | 17 | 15 | 15 | 15 | 14 |
Feels °C | 13 | 14 | 14 | 13 | 13 | 14 | 13 | 14 | 15 | 13 | 13 | 13 | 14 | 13 | 14 | 16 | 13 | 12 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | E 6 | E 7 | E 6 | E 6 | E 7 | E 8 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | SSE 7 |
| kJ | 23 | 53 | 50 | 51 | 91 | 266 | 749 | 598 | 533 | 416 | 363 | 380 | 307 | 307 | 218 | 172 | 121 | 94 | 73 | 65 | 160 |
Swell 2 Height (m) Direction Period (s) | E 8 | S 8 | S 10 | S 10 | S 10 | S 9 | SSE 17 | S 16 | S 13 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | S 10 | S 11 | SSW 4 | — | — | ENE 9 |
| kJ | 10 | 12 | 49 | 46 | 45 | 23 | 100 | 127 | 119 | 138 | 97 | 57 | 55 | 31 | 31 | 17 | 20 | 2 | — | — | 46 |
Swell 3 Height (m) Direction Period (s) | S 15 | S 11 | S 21 | S 21 | S 20 | SSE 18 | S 8 | SE 16 | SE 16 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | SE 13 | SE 13 | — | S 10 | — | — | S 13 |
| kJ | 5 | 9 | 9 | 34 | 33 | 66 | 11 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 7 | 7 | — | 8 | — | — | 3 |
Wind waves Height (m) Direction Period (s) | S 6 | S 5 | S 5 | S 4 | S 4 | — | — | — | — | — | — | — | — | — | — | WNW 2 | — | W 3 | S 6 | S 8 | — |
| kJ | 74 | 37 | 7 | 9 | 5 | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 121 | 539 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 29 | 40 | 29 | 0 | 0 | 0 | 0 | 5 | 1 | 1 | 41 | 0 | 0 | 39 | 0 | 0 | 40 | 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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