
Surf Forecasts:
Shark Island (Cronulla) surf forecast from 14 Sep 2026:
- Best quality surf: Thursday 17 Sep, 7AM (local time) - 10ft (3.0m), 10s period, S swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 10PM (local time) - 11ft (3.5m), 10s period, S swell with 2,500 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 7AM (local time) - 10ft (3.0m), 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 17) at 7AM. The primary swell is predicted to be 3.0m and 10s period with a secondary swell of 2.5m and 10s. Another secondary swell of 0.1m and 13s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Shark Island (Cronulla) in the next 16 days are 3.5m 10s and forecast to arrive on Wednesday (Sep 16) 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 2.0m 6s period and expected on Tuesday (Sep 15) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 17th Sep) | 10ft (3.0m) 10s |
| Best Surf | 7AM (Thu 17th Sep) | 10ft (3.0m) 10s |
| Most Powerful | 10PM (Wed 16th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
G'day, Rusty here. Let's break down what's happening at Shark Island (Cronulla). It's a bit of a mixed bag for the next couple of weeks, so we'll need to pick our moments.
Straight up, the start of the run is flat. Tuesday's got a tiny 2ft NE windswell with a short 7 second period and a weak energy reading (64), but with a cross-off breeze it's just not worth getting wet for – the rating tells me it's poor. Wednesday the 16th sees a big jump in size, with 10ft southerly swell rolling in, but that's coupled with a stiff 22 mph cross-off wind. The combined energy is pumping at 1712, but it's looking too messy and powerful for a good time. It's a "marginal" call at best. For the rest of the first week, we've got a lot of onshore winds and small, weak swells that are best left alone. The water temp is sitting about average for this time of year, nothing wild to report there.
Now, for the standout. Thursday the 17th morning is your best bet for a real surf. The swell settles to a solid 8ft from the SSE, with a 10 second period and a combined energy of 1042 – that's proper moderate wave energy. The kicker is a light 9 mph cross-off breeze from the SSW, keeping things clean. This is an advanced-only affair with that size – it's too big for beginners. The swell direction is a good match for the optimum here, so expect some nice lines wrapping into the reef. Just a heads up, the crowds can be an issue at times, so get in early. The water temp is sitting about average for this time of year, nothing wild to report there.
Saturday the 19th morning offers a brief window with a small 3ft swell and a gentle offshore wind, making for clean conditions. It's not going to blow you away, but it's surfable. The energy is weak at 162 though, so don't expect much push.
Moving into the second week, things get a bit ordinary again. Monday the 21st has a 4ft southerly swell with a long 12 second period, but the 16 mph cross-off wind makes it a pass for me – the rating is poor. The 7ft on Monday afternoon is just too blown out. Tuesday the 22nd morning looks the pick of the week, with 5ft from the south and that 10 second period, delivering 802 combined energy and a glassy 3 mph cross-off. The rating says "very good surf conditions", so that one's worth pencilling in. After that, it's a string of onshore winds and small, weak swells right through to the end of the month. There's a bit of size on Sunday the 27th with 6ft from the SE, but the onshore wind kills it. The last few days of September offer tiny waves and ordinary conditions, nothing to get excited about.
So, to sum it up: Thursday the 17th morning is the clear winner – solid SSE groundswell, clean, and packing a punch. Tuesday the 22nd morning is a solid second option with glassy conditions and moderate energy. The rest of the period is mostly a write-off with small, wind-affected surf. If you've got the skills, the reef will be working on Thursday.
Rusty out.
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 22°C on Mon night, min 9°C on Wed night). Winds decreasing (strong winds from the S on Tue afternoon, light winds from the ENE by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sun afternoon, min 10°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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) | ENE 7 | NE 7 | NE 7 | S 9 | S 10 | S 10 | S 10 | SSE 10 | SSE 9 | SSE 9 | S 9 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 8 | NE 4 | S 19 |
Wave Graph | |||||||||||||||||||
93 | 46 | 21 | 1228 | 1702 | 1985 | 2363 | 1022 | 552 | 358 | 281 | 259 | 139 | 113 | 85 | 57 | 36 | 15 | 27 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross | on | cross-off | off | on | cross-off | cross | on | cross |
High Tide | 10:22PM1.25m | 10:41AM1.44m | 11:04PM1.12m | 11:21AM1.39m | 11:51PM1.01m | 12:07PM1.33m | 00:47AM0.92m | 1:03PM1.27m | 2:01AM0.87m | 2:11PM1.24m | 3:25AM0.87m | 3:22PM1.25m | |||||||
Low Tide | 4:19AM0.29m | 5:09PM0.31m | 4:51AM0.38m | 6:00PM0.38m | 5:28AM0.47m | 6:59PM0.45m | 6:13AM0.55m | 8:11PM0.49m | 7:14AM0.60m | 9:27PM0.48m | 8:32AM0.62m | 10:31PM0.44m | |||||||
— | 5:56 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | |
— | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — | |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 17 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 20 | 19 | 18 | 24 | 23 | 21 | 25 | 26 | 24 |
Feels °C | 19 | 17 | 12 | 5 | 4 | 5 | 6 | 10 | 10 | 12 | 15 | 15 | 16 | 19 | 18 | 17 | 20 | 22 | 19 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | NE 7 | NE 7 | ENE 6 | NE 12 | ENE 12 | E 13 | SSE 10 | SSE 9 | SSE 9 | S 9 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 8 | NE 4 | S 10 |
93 | 46 | 21 | 4 | 6 | 15 | 3 | 1022 | 552 | 358 | 281 | 259 | 139 | 113 | 85 | 57 | 36 | 5 | 17 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | S 9 | S 10 | E 14 | E 15 | — | — | E 13 | E 13 | E 13 | SSE 18 | SSE 18 | SSE 16 | SSE 15 | SSE 17 | — | NE 4 | SSE 8 | ENE 4 |
32 | 15 | 7 | 4 | 4 | — | — | 3 | 3 | 3 | 66 | 103 | 84 | 46 | 57 | — | 1 | 14 | 1 | |
Swell 3 Height (m) Direction Period (s) | E 12 | E 13 | E 13 | S 16 | — | — | — | ENE 13 | S 19 | S 19 | E 12 | E 12 | ENE 4 | NE 4 | E 12 | E 12 | S 17 | S 11 | S 19 |
3 | 3 | 13 | 5 | — | — | — | 17 | 7 | 7 | 3 | 3 | 1 | 3 | 3 | 3 | 6 | 3 | 27 | |
Wind waves Height (m) Direction Period (s) | — | SW 3 | SSE 4 | S 9 | S 10 | S 10 | S 10 | — | — | — | — | NE 2 | — | — | E 3 | — | NW 2 | NE 4 | SW 2 |
— | 1 | 19 | 1228 | 1702 | 1985 | 2363 | — | — | — | — | 2 | — | — | 2 | — | 1 | 15 | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 0 | 1305 | 73 | 860 | 694 | 73 | 0 | 5 | 0 | 1 | 41 | 0 | 0 | 2 | 1 | 1 | 29 | 1 |
Best forecast wave conditions in Sydney South Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










