
Surf Forecasts:
Shark Island (Cronulla) surf forecast from 9 Sep 2026:
- Best quality surf: Thursday 10 Sep, 10PM (local time) - 8ft (2.4m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 10PM (local time) - 8ft (2.4m), 10s period, S swell with 1,131 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 10PM (local time) - 8ft (2.4m), 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 Thursday (Sep 10) at 10PM. The primary swell is predicted to be 2.4m and 10s period with a secondary swell of 2.1m and 10s. Another secondary swell of 0.2m and 9s 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 2.4m 10s and forecast to arrive on Thursday (Sep 10) at 10PM. 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 Tuesday (Sep 15) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 10th Sep) | 8ft (2.4m) 10s |
| Best Surf | 10PM (Thu 10th Sep) | 8ft (2.4m) 10s |
| Most Powerful | 10PM (Thu 10th Sep) | 8ft (2.4m) 10s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Alright, Rusty here, let’s have a look at what’s coming up for Shark Island (Cronulla).
We’ve got a bit of a mixed bag over the next couple of weeks. The water temp is sitting at 64°F, which is pretty much bang on average for this time of year, so no surprises there.
The first real chance to get wet comes on Thursday the 10th, but it’s not the best. We’ve got a solid 8ft S swell pushing in from the southeast, with a 9-second period, but that SSW wind at 16 mph is blowing cross-off, so it’s not glassy. The wave energy is cranked up, with a reading of 2136, meaning there’s plenty of power, but the forecast is saying marginal surf. It’s a bit too big for the average punter, and that wind will keep it a little lumpy. Later in the day, it drops to 7ft, but still not ideal.
Friday the 11th morning is a step up. The swell drops to 5ft from the SSE, period still 9 seconds, but we get a light S wind at 6 mph, blowing cross-off and keeping the surface clean. The energy is moderate at 488. It’s a better window, but not the standout.
The real standout hits on Saturday the 12th. Early morning, we’ve got glassy conditions with a NNW breeze at only 3 mph, and a clean 4ft S swell rolling in with a long 12-second period. That’s groundswell, and it’ll wrap around nicely into this reef setup. The wave energy is 467, so it’s not a huge day, but it’s a classic clean, lined-up, long-period swell for the advanced crew. This is a reef break that’s fairly consistent, and on a day like this, it’s going to be quality. The crowds can be a thing here sometimes, but on a Saturday morning with that kind of forecast, you’d want to be early or patient.
After Saturday morning, the outlook gets pretty flat and scrappy. Sunday the 13th into the middle of the following week is mostly small, weak, and wind-affected, with a lot of onshore or cross-onshore winds. There’s a long gap of several days with no real recommendation.
Now, looking further ahead, there’s a potential pulse on Saturday the 19th. The swell jumps back up to 8ft from the S, with a 12-second period, but the wind is cross-onshore from the ESE at 9 mph, so it’s going to be a bit choppy and messy. The energy is strong at 2154, but the conditions won’t match the swell. That one’s a long way off, so keep an eye on it, but don’t bank on it.
The only other one worth a mention is a week later, on Friday the 25th. We’ve got an 8ft S swell, 12-second period, and a clean cross-off wind from the SSE at 16 mph. The energy is very strong at 3401, so the ocean will be pumping, but it’s a big, powerful groundswell. For a reef break, that could be a ripper, but it’s one for the experts only. It’s a promising call, but it’s a long way out, so treat it as a hopeful heads-up.
All in all, Saturday the 12th morning is your best bet. Get out there for that glassy, long-period clean-up.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sat morning, min 13°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Mon morning, min 14°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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 10 | SSE 9 | SSE 9 | SSE 9 | S 12 | S 10 | S 10 | S 9 | S 10 | S 10 | S 11 | S 11 | NE 6 | NE 6 | SSE 7 | SSE 8 | S 8 | SSE 12 | S 10 |
Wave Graph | |||||||||||||||||||||
1122 | 848 | 1060 | 471 | 400 | 265 | 330 | 225 | 148 | 113 | 141 | 108 | 114 | 82 | 58 | 19 | 337 | 370 | 349 | 560 | 270 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross | off | glassy | on | cross | cross-on | on | cross | cross | on | cross | cross-off | cross-off | cross-off | cross | cross-on | cross |
High Tide | 7:37PM1.65m | 8:13AM1.38m | 8:20PM1.59m | 8:50AM1.44m | 9:01PM1.50m | 9:27AM1.47m | 9:42PM1.38m | 10:04AM1.47m | 10:22PM1.25m | 10:41AM1.44m | 11:04PM1.12m | 11:21AM1.39m | 11:51PM1.01m | ||||||||
Low Tide | 1:19PM0.22m | 2:06AM0.04m | 2:07PM0.18m | 2:41AM0.07m | 2:53PM0.17m | 3:15AM0.13m | 3:37PM0.19m | 3:47AM0.21m | 4:22PM0.24m | 4:19AM0.29m | 5:09PM0.31m | 4:51AM0.38m | 6:00PM0.38m | ||||||||
6:03 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:56 | — | — | 5:56 | — | — | 5:54 | — | — | |
— | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 14 | 16 | 16 | 15 | 18 | 17 | 16 | 19 | 18 | 17 | 25 | 24 | 23 | 16 | 15 | 15 | 15 | 15 | 15 |
Feels °C | 9 | 10 | 11 | 14 | 14 | 15 | 15 | 14 | 15 | 15 | 13 | 16 | 20 | 19 | 21 | 12 | 10 | 11 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | S 9 | SSE 22 | S 10 | SSE 9 | SSE 9 | SSE 9 | S 12 | S 10 | S 10 | S 9 | S 10 | NE 6 | S 11 | S 11 | NE 6 | NE 6 | NE 6 | S 17 | S 8 | SSE 12 | S 10 |
893 | 157 | 767 | 471 | 400 | 265 | 330 | 225 | 148 | 113 | 141 | 62 | 114 | 82 | 58 | 19 | 10 | 23 | 349 | 560 | 270 | |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 9 | S 22 | E 15 | E 14 | SSE 18 | SSE 19 | SSE 19 | ENE 4 | ENE 4 | ENE 13 | S 10 | ENE 6 | ENE 13 | SSE 10 | E 12 | E 13 | NE 6 | SSE 15 | E 14 | E 13 |
19 | 9 | 9 | 17 | 4 | 34 | 122 | 72 | 7 | 3 | 17 | 108 | 24 | 16 | 31 | 3 | 13 | 1 | 74 | 16 | 14 | |
Swell 3 Height (m) Direction Period (s) | SSE 23 | E 15 | E 15 | — | E 10 | E 13 | E 14 | ENE 14 | SSE 20 | SSE 16 | ENE 13 | ENE 13 | ENE 13 | — | E 12 | E 16 | — | E 14 | E 14 | NE 6 | NE 5 |
102 | 5 | 4 | — | 2 | 14 | 15 | 19 | 128 | 26 | 17 | 17 | 17 | — | 12 | 5 | — | 15 | 4 | 1 | 1 | |
Wind waves Height (m) Direction Period (s) | S 9 | S 9 | S 10 | — | — | — | — | E 3 | NE 4 | NE 4 | ENE 4 | — | NNW 3 | NE 5 | — | SSE 5 | SSE 7 | SSE 8 | — | — | — |
1122 | 848 | 1060 | — | — | — | — | 2 | 12 | 5 | 20 | — | 1 | 55 | — | 62 | 337 | 370 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 43 | 96 | 0 | 0 | 43 | 0 | 0 | 335 | 1 | 1 | 472 | 1 | 1 | 18 | 1 | 153 | 120 | 153 | 0 | 5 | 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.










