
Surf Forecasts:
Shark Island (Cronulla) surf forecast from 9 Sep 2026:
- Best quality surf: Thursday 10 Sep, 7AM (local time) - 10ft (3.0m), 9s period, S swell with offshore winds.
- Most powerful swell: Thursday 10 Sep, 1AM (local time) - 11ft (3.5m), 10s period, S swell with 2,423 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 7AM (local time) - 10ft (3.0m), 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 Thursday (Sep 10) at 7AM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 2.5m and 9s. Another secondary swell of 0.4m and 10s 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 Thursday (Sep 10) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Tuesday (Sep 15) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 10th Sep) | 10ft (3.0m) 9s |
| Best Surf | 7AM (Thu 10th Sep) | 10ft (3.0m) 9s |
| Most Powerful | 1AM (Thu 10th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's break down the next couple of weeks at Shark Island. It's a bit of a slow start, but there are definitely a few windows where it could get real good.
The early part of the period is pretty rough. Wednesday afternoon is a complete washout – strong southerly winds and close to 10ft of short-period, junky swell. No one wants a bar of that. Thursday cleans up a bit but it's still pretty ordinary with moderate winds.
The first real chance comes Friday morning. The swell drops to a cleaner 6ft from the south with a 10-second period, and the wind turns light offshore, so it should be pretty clean. The energy backs off to 556, but with those conditions, that's fine.
Saturday morning is the pick of the first week in my books. The swell settles to 4ft from the SSE with a long 12-second period, and it's dead glassy – no wind at all. Moderate energy at 478, but the clean conditions will make it feel better than that. This is definitely a standout for the early run. Saturday arvo, though, the nor'easter kicks up and it gets chopped out.
Sunday morning through to Thursday the 17th is a dead zone. The swell just fades away and we get a lot of onshore wind. The energy readings drop into the low hundreds and below – the ocean basically goes flat. You're looking at about six days with nothing worth chasing. The 15th sees a bump to around 5ft, but it’s short-period and windy, so it's a bit of a tease.
Then things get interesting. On Friday the 18th, the wind swings offshore and the swell shows some teeth – 8ft from the south on a short 7-second period. The energy is a strong 659. It's raw windswell, but with that offshore breeze, the more experienced crew could have a ball. It's a standout, but it's more about grunt than perfection.
Saturday the 19th is where the real magic is. The forecast shows a solid 10ft from the SSE early with a long 11-second period, and the energy is huge at 1788. That's a proper groundswell. The wind is cross-off and moderate early, but it eases as the day goes on. By Saturday afternoon, the swell is still a solid 8ft from the SSE on a 10-second period, with 1233 of energy and only a gentle cross-off breeze. It looks very, very good. This is the standout of the whole period, no doubt. Just remember, at this size, it's strictly for experts.
After that, the swell fades out fast. Sunday and Monday are sloppy with onshore winds, and from the 21st onwards it's back to tiny, weak surf. There's a slight bump in energy around the 23rd and 24th, but the swell is small and from the east-southeast with onshore winds. Not worth the effort.
So, to sum it up: the first real window is Saturday morning the 12th for clean, glassy fun – not big, but perfect. But the true standout is Saturday the 19th, when a powerful, long-period south swell lines up with improving winds. That's the one to circle on the calendar, even if it is a week and a half away, so treat it as promising but not locked in. Water temp is right around 64°, which is pretty normal for this time of year.
Signing off, Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Sat morning, min 10°C on Wed night). Winds decreasing (strong winds from the S on Wed afternoon, calm by Fri night). | Days 5-7 Weather SummarySome drizzle, heaviest during Mon night. Warm (max 23°C on Mon morning, min 14°C on Sat night). Winds increasing (light winds from the NW on Sun night, fresh winds from the SSE by Tue morning). | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 8 | S 10 | S 9 | S 9 | S 10 | S 10 | SSE 9 | SSE 10 | SSE 12 | S 11 | S 10 | S 9 | S 11 | S 10 | S 11 | S 10 | NE 6 | SSE 10 | SSE 7 | SSE 9 |
Wave Graph | ||||||||||||||||||||
981 | 2423 | 893 | 794 | 799 | 539 | 400 | 288 | 343 | 229 | 117 | 113 | 143 | 106 | 112 | 80 | 56 | 32 | 204 | 505 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | off | glassy | on | cross-on | cross-on | on | cross | cross-on | on | cross | cross-off | cross-off | cross-off |
High Tide | 6:51PM1.66m | 7:33AM1.31m | 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 | |||||||
Low Tide | 1:28AM0.04m | 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 | ||||||||
— | — | 6:03 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:56 | — | — | 5:56 | — | — | |
5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 15 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 17 | 17 | 16 | 19 | 19 | 18 | 23 | 22 | 23 | 17 | 15 | 15 |
Feels °C | 5 | 5 | 8 | 9 | 11 | 13 | 13 | 16 | 15 | 14 | 14 | 15 | 15 | 17 | 18 | 17 | 21 | 13 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | ESE 13 | ESE 11 | SE 10 | SSE 22 | S 10 | S 10 | SSE 9 | SSE 10 | SSE 12 | S 11 | S 10 | S 9 | S 11 | NE 6 | S 11 | S 10 | NE 6 | NE 6 | NE 6 | SSE 9 |
17 | 41 | 25 | 157 | 799 | 539 | 400 | 288 | 343 | 229 | 117 | 113 | 143 | 52 | 112 | 80 | 56 | 19 | 6 | 505 | |
Swell 2 Height (m) Direction Period (s) | E 17 | S 16 | SSE 23 | ESE 9 | ESE 9 | E 15 | E 14 | SSE 18 | SSE 19 | SSE 19 | NE 4 | ENE 5 | ENE 13 | S 10 | NE 6 | ENE 13 | S 10 | SSE 10 | E 13 | NE 6 |
5 | 48 | 102 | 9 | 7 | 17 | 4 | 33 | 120 | 70 | 9 | 9 | 17 | 106 | 27 | 16 | 50 | 32 | 13 | 1 | |
Swell 3 Height (m) Direction Period (s) | E 17 | E 16 | E 9 | E 9 | S 22 | — | E 10 | E 13 | E 14 | ENE 14 | SSE 20 | SSE 16 | E 9 | E 13 | ENE 13 | — | E 12 | E 13 | — | E 14 |
6 | 5 | 2 | 1 | 36 | — | 2 | 14 | 15 | 19 | 75 | 26 | 2 | 13 | 17 | — | 12 | 3 | — | 15 | |
Wind waves Height (m) Direction Period (s) | S 8 | S 10 | S 9 | S 9 | — | — | — | — | — | ENE 3 | NNE 4 | NE 5 | NE 4 | — | — | NE 5 | — | SSW 4 | SSE 7 | — |
981 | 2423 | 893 | 794 | — | — | — | — | — | 2 | 34 | 23 | 24 | — | — | 51 | — | 10 | 204 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 847 | 46 | 0 | 96 | 0 | 0 | 0 | 0 | 0 | 335 | 1 | 1 | 147 | 1 | 1 | 85 | 1 | 210 | 153 | 40 |
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.










