
Surf Forecasts:
Shark Island (Cronulla) surf forecast from 4 Sep 2026:
- Best quality surf: Sunday 6 Sep, 10PM (local time) - 8ft (2.4m), 11s period, S swell with offshore winds.
- Most powerful swell: Thursday 10 Sep, 4PM (local time) - 11ft (3.5m), 11s period, S swell with 2,946 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 10PM (local time) - 2.5ft (0.7m), 7s period with SSE 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 Friday (Sep 04) at 10PM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.4m and 12s. The wind is predicted to be glassy 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 10) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Sunday (Sep 06) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Fri 4th Sep) | 2.5ft (0.7m) 7s |
| Best Surf | 10PM (Sun 6th Sep) | 8ft (2.4m) 11s |
| Most Powerful | 4PM (Thu 10th Sep) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break down what’s cookin’ at Shark Island (Cronulla) for the next couple of weeks in feet and miles per hour.
It’s a slow burner, no doubt. The first few days are flat and messy, but don’t get discouraged – there’s some real heavy stuff coming later. The water temperature is 63°, which is right where it should be for this time of year.
The first real chance of a wave comes on Monday the 7th. The morning has a 4ft S swell, but the wind is blowing cross, messing up the face. It’s a tease, with combined energy at 223 (moderate), but it’s not a day to get excited about.
Now, Tuesday the 8th is where I get my hopes up. The morning is a bit rough with a 7ft S swell (631 energy), but the afternoon is the real deal. We’re looking at a clean 8ft SSE swell, with an 11-second period and a light offshore breeze. That’s 1318 energy (moderate to strong), and for a reef like this, that long-period groundswell is going to produce some proper, powerful lines. This is a big highlight – for the advanced crew only. Expect crowds, this is the best session in the first week.
Wednesday the 9th morning still has some fun waves at 5ft SSE and clean conditions (378 energy), but the wind picks up in the afternoon and ruins it.
Thursday the 10th is a big day. The swell jumps to 10ft S in the morning, with a 12-second period. That’s 2374 energy (strong), and it’s offshore. This is huge, heavy, and only for the experts. The afternoon is even bigger, with 12ft S swell and 5220 energy (very strong). This is proper, serious reef-break territory. Don’t even think about it unless you know what you’re doing.
Friday the 11th and Saturday the 12th will see the swell dropping but staying solid, with the 12th morning offering a clean 5ft SSE swell (680 energy). Still good, but the magic is fading.
From Sunday the 13th through Wednesday the 16th, we hit a flat spell. The swell drops right off, and the wind is mostly onshore or cross-onshore. A real dry patch, nothing worth paddling for.
Then, Thursday the 17th afternoon is the other absolute standout. We’ve got a 10ft S swell, a 12-second period, and it’s *glassy*. That’s a 3321 energy reading (very strong). This is the kind of condition that makes this place a world-class wave. Dead calm, perfect lines. It’s a week and a half out, so take it with a grain of salt, but it looks incredible.
Friday the 18th and Saturday the 19th will still have size, but the wind will be screaming from the SSE, making it choppy and tough.
So, here’s the bottom line: your best bets are Tuesday the 8th afternoon and Thursday the 17th afternoon. Both are for experienced surfers only, offering big, powerful, clean groundswell. The rest of the forecast is either small, messy, or just too big and windy. Pick your window and go.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Sat afternoon, min 13°C on Sun night). Winds increasing (calm on Fri night, strong winds from the NNW by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon morning, min 10°C on Tue night). Winds increasing (light winds from the NNE on Mon morning, strong winds from the S by Wed night). | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 8 | S 11 | S 9 | S 9 | NE 6 | SSW 7 | S 8 | S 10 | S 8 | SSE 8 | SSE 10 | S 8 | SSE 11 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 12 | S 11 | S 12 |
Wave Graph | |||||||||||||||||||||
300 | 82 | 59 | 60 | 42 | 42 | 49 | 58 | 832 | 212 | 197 | 2159 | 576 | 1316 | 657 | 375 | 456 | 1345 | 2134 | 2946 | 2113 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | off | cross | cross | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | off | cross-off | cross-off |
High Tide | 1:31PM1.43m | 2:23AM0.97m | 2:45PM1.44m | 3:51AM0.97m | 3:59PM1.49m | 5:04AM1.03m | 5:04PM1.56m | 6:02AM1.12m | 6:01PM1.63m | 6:50AM1.21m | 6:51PM1.66m | 7:33AM1.31m | 7:37PM1.65m | ||||||||
Low Tide | 8:29PM0.35m | 7:55AM0.47m | 9:51PM0.31m | 9:14AM0.47m | 11:01PM0.23m | 10:29AM0.43m | 11:58PM0.15m | 11:33AM0.36m | 00:46AM0.08m | 12:29PM0.28m | 1:28AM0.04m | 1:19PM0.22m | 2:06AM0.04m | ||||||||
6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 17 | 27 | 29 | 20 | 19 | 19 | 16 | 20 | 18 | 15 | 14 | 14 | 13 | 17 | 16 | 12 | 13 | 15 | 14 |
Feels °C | 17 | 14 | 16 | 23 | 23 | 14 | 15 | 14 | 13 | 17 | 14 | 6 | 10 | 11 | 11 | 12 | 9 | 3 | 5 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 8 | SSE 7 | S 9 | NE 6 | NE 6 | SSW 7 | S 8 | S 10 | S 8 | E 10 | E 10 | S 8 | SSE 11 | SSE 10 | SSE 9 | E 9 | E 16 | S 21 | S 11 | S 12 |
300 | 82 | 41 | 60 | 31 | 42 | 49 | 58 | 832 | 212 | 8 | 9 | 576 | 1316 | 657 | 375 | 2 | 5 | 225 | 2168 | 2113 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | ENE 10 | S 11 | NE 5 | S 9 | S 9 | NE 7 | NE 7 | E 10 | E 10 | NE 8 | — | SE 9 | E 10 | E 10 | E 9 | S 16 | — | E 16 | S 24 | SSE 22 |
9 | 18 | 59 | 4 | 42 | 27 | 25 | 7 | 8 | 8 | 2 | — | 53 | 2 | 2 | 2 | 5 | — | 5 | 97 | 288 | |
Swell 3 Height (m) Direction Period (s) | ENE 10 | S 18 | NE 4 | E 9 | E 9 | E 11 | E 11 | E 10 | NE 6 | NE 8 | E 10 | — | E 11 | — | NE 9 | N 8 | E 17 | — | NE 16 | NE 15 | E 15 |
19 | 26 | 3 | 7 | 7 | 2 | 9 | 9 | 2 | 3 | 8 | — | 2 | — | 3 | 1 | 6 | — | 10 | 9 | 4 | |
Wind waves Height (m) Direction Period (s) | — | ENE 8 | — | NNW 3 | WNW 3 | WSW 3 | W 4 | — | — | — | SSE 8 | SSE 10 | — | — | — | NW 2 | SSE 9 | SSE 9 | S 12 | S 11 | — |
— | 23 | — | 1 | 8 | 9 | 9 | — | — | — | 197 | 2159 | — | — | — | 1 | 456 | 1345 | 2134 | 2946 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 5 | 0 | 2 | 23 | 47 | 1 | 39 | 0 | 1 | 60 | 153 | 0 | 0 | 1 | 0 | 174 | 153 | 40 | 361 | 0 |
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.










