
Surf Forecasts:
Shark Island (Cronulla) surf forecast from 13 Sep 2026:
- Best quality surf: Thursday 17 Sep, 10PM (local time) - 6.5ft (2.0m), 9s period, SSE swell with offshore winds.
- Most powerful swell: Thursday 17 Sep, 1AM (local time) - 11ft (3.5m), 10s period, S swell with 2,788 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1AM (local time) - 2.5ft (0.7m), 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 Monday (Sep 14) at 1AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 1.1m and 6s. 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 3.5m 10s and forecast to arrive on Thursday (Sep 17) at 1AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Sunday (Sep 13) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 14th Sep) | 2.5ft (0.7m) 10s |
| Best Surf | 10PM (Thu 17th Sep) | 6.5ft (2.0m) 9s |
| Most Powerful | 1AM (Thu 17th 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 have a look at what’s cooking for Shark Island (Cronulla) over the next couple of weeks.
Right now, we’re in a bit of a dry spell. From this Sunday morning the 13th right through until the morning of Tuesday the 15th, it’s pretty much flat or blown out with poor conditions. The swell is tiny, mostly around 2ft to 3ft from the south, but the wind is either onshore or cross-onshore, so it’s not worth paddling out for. There’s a gap of about two and a half days with no surf worth talking about.
Then things get a bit interesting, but not for the faint-hearted. Wednesday the 16th sees a big pulse of swell from the south pushing in, with wave heights jumping to 10ft to 12ft. The combined swell energy is strong to very strong, hitting 1342 in the morning and a hefty 2559 in the afternoon. The wind swings offshore from the SSW and S, so the waves will be clean, but this is solid, powerful stuff. With the swell over 8ft, this is expert-only territory. Thursday the 17th holds similar size, around 8ft to 10ft from the south and SSE, with cross-offshore winds and clean conditions, but again, it’s big and demanding. The combined energy stays high, around 989 to 1641.
Friday the 18th drops back a bit to 4ft to 5ft from the SSE, but the wind turns onshore and cross-shore, so it’s messy. Not the best.
Saturday the 19th morning has a tiny 2ft from the SE with light cross-offshore winds, making it clean, but there’s barely any push. The combined energy is weak at 290. By the afternoon, a 1ft swell rolls in with a very long 17-second period from the SSE, but it’s onshore wind and the wave size is just a dribble. That long period won’t help on a reef break like this unless there’s more size.
Sunday the 20th through Tuesday the 22nd is mostly small, with the odd surfable wave but nothing to get excited about. The best of that patch is Monday the 21st morning, when a 8ft southerly swell arrives with cross-shore winds and a combined energy of 1463, but the conditions are marginal and the wind is light and cross-shore, so it’s a bit tricky. Not a standout.
Now, the real standout of the whole outlook is Saturday the 26th morning. We get a 5ft swell from the ENE, with glassy conditions – that’s a major positive for clean surf. The combined swell energy is moderate at 376, and the wind is dead calm. The swell direction from the ENE is a good match for Shark Island’s optimum from the SE, so it’ll wrap in nicely. This is the pick of the bunch, and with the water temperature around 63°F, that’s about average for this time of year, so no need for a thick steamer.
Looking further out, Monday the 28th morning brings a solid 8ft southerly swell with a cross-offshore breeze and clean conditions. The combined energy is high at 1291, and the period is 11 seconds, so it’s a proper groundswell. This one’s promising but it’s over a week away, so less certain. The size puts it in the expert range, but the wind and swell direction look good for this reef.
Overall, the best bet is Saturday the 26th morning for a glassy, clean session on a fun-sized swell. For the big-wave crew, Wednesday the 16th and Thursday the 17th offer serious power, but you’ll want to be well across your game. Crowds are possible at Shark Island, so keep an eye out.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon morning, min 10°C on Tue night). Winds increasing (light winds from the WNW on Mon night, strong winds from the S by Tue afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Fri morning, min 9°C on Thu night). Winds decreasing (strong winds from the S on Wed afternoon, light winds from the NNW by Fri night). | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 10 | S 10 | S 10 | S 11 | S 11 | ENE 6 | NE 7 | NE 7 | S 9 | S 9 | S 10 | S 10 | S 10 | SSE 9 | SSE 9 | SSE 8 | S 9 | ESE 10 | SE 10 | S 9 | S 9 |
Wave Graph | |||||||||||||||||||||
115 | 135 | 102 | 116 | 82 | 69 | 47 | 23 | 1561 | 1336 | 2559 | 2788 | 1631 | 979 | 493 | 346 | 210 | 185 | 112 | 57 | 39 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-off | cross-on | on | cross | cross-off | cross-off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross | on | cross-off | cross-off | on | cross-off |
High Tide | 9:42PM1.38m | 10:04AM1.47m | 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 | ||||||||
Low Tide | 3:37PM0.19m | 3:47AM0.21m | 4:22PM0.24m | 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 | ||||||||
5:58 | — | — | 5:56 | — | — | 5:56 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | |
— | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 17 | 23 | 23 | 22 | 20 | 17 | 12 | 13 | 14 | 13 | 14 | 14 | 13 | 18 | 18 | 17 | 25 | 23 | 21 |
Feels °C | 15 | 14 | 15 | 19 | 18 | 19 | 18 | 13 | 4 | 3 | 4 | 3 | 8 | 9 | 10 | 14 | 13 | 15 | 20 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | NE 6 | NE 6 | S 11 | ENE 6 | NE 7 | NE 7 | NE 7 | NE 7 | — | ENE 13 | E 13 | SSE 9 | SSE 9 | SSE 8 | S 9 | S 9 | SE 10 | S 9 | S 9 |
115 | 135 | 97 | 42 | 82 | 69 | 47 | 23 | 8 | 2 | — | 17 | 3 | 979 | 493 | 346 | 210 | 132 | 112 | 56 | 39 | |
Swell 2 Height (m) Direction Period (s) | NE 5 | ENE 13 | S 10 | S 11 | ENE 13 | SSE 10 | S 9 | S 9 | E 14 | E 14 | — | — | S 19 | E 13 | E 13 | E 13 | ESE 8 | ESE 10 | S 9 | SE 9 | SE 8 |
13 | 17 | 102 | 116 | 16 | 32 | 15 | 14 | 4 | 4 | — | — | 7 | 3 | 3 | 3 | 101 | 185 | 76 | 49 | 18 | |
Swell 3 Height (m) Direction Period (s) | SSE 16 | ENE 13 | E 13 | ENE 13 | — | E 12 | E 13 | E 13 | S 16 | — | — | — | — | NE 13 | — | S 18 | SE 10 | SSE 17 | SSE 17 | SSE 17 | NE 4 |
27 | 17 | 13 | 17 | — | 12 | 3 | 3 | 5 | — | — | — | — | 7 | — | 6 | 26 | 94 | 101 | 57 | 2 | |
Wind waves Height (m) Direction Period (s) | — | ENE 4 | N 7 | — | NE 6 | — | SW 3 | SE 4 | S 9 | S 9 | S 10 | S 10 | S 10 | — | — | — | ENE 3 | N 3 | N 4 | ENE 3 | — |
— | 35 | 89 | — | 35 | — | 1 | 10 | 1561 | 1336 | 2559 | 2788 | 1631 | — | — | — | 3 | 1 | 1 | 3 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 137 | 0 | 1 | 60 | 1 | 0 | 70 | 40 | 874 | 694 | 153 | 73 | 73 | 0 | 1 | 60 | 1 | 0 | 41 | 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.










