
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: Thursday 17 Sep, 1AM (local time) - 11ft (3.5m), 11s period, S swell with 2,602 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 4AM (local time) - 3ft (0.9m), 7s period with ENE 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 Tuesday (Sep 15) at 4AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m 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 3.5m 11s 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 1.6m 6s period and expected on Monday (Sep 21) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 15th Sep) | 3ft (0.9m) 7s |
| Best Surf | 7AM (Thu 17th Sep) | 10ft (3.0m) 10s |
| Most Powerful | 1AM (Thu 17th Sep) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Righto, let’s have a look at what’s cookin’ for Shark Island over the next couple of weeks.
First thing you gotta know – we’re waiting. The next week and a half is pretty grim. There’s a fair gap of poor to ordinary conditions before anything worth paddling out for shows up. The first proper window of opportunity doesn’t arrive until Thursday, September 17th.
Alright, let’s talk about the water. Out at Shark Island (Cronulla), the water temp is sittin’ at 63°F, which is about 0.9°F below the long-term average for this time of year. So, pretty standard – nothing to complain about, just your typical cool spring water.
Monday afternoon the 14th is a write-off. Onshore NE breeze at 19 mph and only 2ft of S swell with a middling 11-second period. The combined energy is weak at 159 – no good, leave it.
Tuesday the 15th starts clean early with a light offshore SSW breeze at 6 mph, but the swell’s tiny at 3ft from the ENE and the period’s a short 7 seconds. Combined energy is only 79. It’s surfable but very ordinary. Tuesday afternoon gets worse – cross-off SSE wind at 19 mph and the swell drops to 2ft.
Wednesday the 16th sees a big jump in size – 10ft to 12ft of S swell with a 10-second period, and the combined energy jumps to a massive 1920 to 2129. But the wind is strong cross-off at 22-25 mph, and it’s flagged as marginal. This is expert-only territory, and it’ll be messy. Kite surfers might be interested, but for a paddle surfer, it’s a no-go.
Now, Thursday the 17th morning – this is the standout. Finally. Clean conditions, clear sky, a gentle SSW cross-off breeze at 9 mph. The swell is a solid 10ft from the S at 10 seconds, with combined energy of 2618 – that’s strong. This is excellent surf for experienced surfers. It’s a reef break, and that long-period groundswell will line up nicely here. Keep in mind, it’s only for the advanced crew – beginners need to stay well away. Crowds are possible here sometimes, so get in early.
Thursday afternoon drops off quick – swell down to 7ft, wind goes light cross-shore, and the quality falls away.
Friday the 18th is marginal at best. Morning sees 5ft of SSE swell with a light cross-shore NW wind, but it’s nothing special. The rest of the week and into the next is mostly onshore winds or weak little swells, nothing worth chasing.
There’s a small pulse on Tuesday the 22nd – 5ft of S swell, but it’s onshore NNE wind and flagged as poor. Same story for Wednesday the 23rd, with a 6ft ENE swell but onshore NE winds. Just not good.
So, to be honest, your true best bet is the morning of Thursday, September 17th. That’s the one. Clean, strong S groundswell, light offshore wind – a proper session for the experienced crew. After that, it’s a long, flat wait with onshore slop through to the end of the month.
Keep an eye on it, but don’t hold your breath for the second week.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon night, min 9°C on Wed night). Winds increasing (light winds from the NNW on Mon night, strong winds from the S by Tue afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sun morning, min 10°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 11 | NE 7 | ENE 7 | NE 7 | S 9 | S 10 | S 10 | S 11 | S 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 |
Wave Graph | ||||||||||||||||||||
82 | 109 | 61 | 37 | 1243 | 1892 | 2110 | 2602 | 1476 | 641 | 366 | 333 | 254 | 136 | 106 | 78 | 41 | 24 | 14 | 8 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | cross-off | cross | on | cross-off | cross-off | cross-on | cross | cross | on | cross-off |
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 | 4:22PM0.24m | 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 | 8:32AM0.62m | 10:31PM0.44m | |||||||
— | — | 5:56 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | |
5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 21 | 17 | 13 | 13 | 14 | 14 | 14 | 14 | 13 | 20 | 19 | 17 | 24 | 22 | 21 | 27 | 28 | 25 |
Feels °C | 16 | 19 | 19 | 12 | 6 | 4 | 4 | 5 | 10 | 11 | 12 | 15 | 14 | 15 | 19 | 17 | 18 | 21 | 25 | 20 |
Swell 1 Height (m) Direction Period (s) | S 11 | NE 7 | ENE 7 | NE 7 | NE 7 | NE 14 | ENE 12 | E 13 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | NE 4 |
82 | 109 | 61 | 37 | 7 | 8 | 15 | 3 | 1132 | 641 | 366 | 333 | 254 | 136 | 106 | 78 | 41 | 24 | 14 | 5 | |
Swell 2 Height (m) Direction Period (s) | E 13 | SSE 10 | S 9 | S 9 | E 14 | ENE 14 | E 15 | — | E 13 | E 13 | E 13 | SSE 18 | SSE 18 | SSE 16 | SSE 16 | SSE 15 | S 16 | — | S 11 | S 10 |
13 | 32 | 15 | 14 | 4 | 20 | 4 | — | 3 | 3 | 3 | 32 | 60 | 50 | 51 | 21 | 5 | — | 2 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | E 12 | E 13 | E 13 | S 16 | — | — | — | NE 13 | S 19 | S 19 | E 12 | E 12 | ENE 4 | ENE 4 | SSE 18 | E 12 | E 11 | S 17 | S 6 |
— | 3 | 3 | 3 | 5 | — | — | — | 7 | 7 | 7 | 3 | 3 | 1 | 2 | 30 | 3 | 2 | 6 | 1 | |
Wind waves Height (m) Direction Period (s) | NE 5 | — | SW 3 | SSE 4 | S 9 | S 10 | S 10 | S 11 | S 10 | — | — | — | — | — | WNW 3 | E 3 | — | — | NE 3 | NNW 3 |
64 | — | 2 | 16 | 1243 | 1892 | 2110 | 2602 | 1476 | — | — | — | — | — | 1 | 2 | — | — | 5 | 2 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 137 | 1 | 0 | 1305 | 43 | 860 | 694 | 40 | 0 | 60 | 0 | 1 | 41 | 0 | 0 | 41 | 1 | 35 | 16 | 176 |
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.










