Surf Forecasts:
Shark Island (Cronulla) surf forecast from 31 Aug 2026:
- Best quality surf: Friday 4 Sep, 7AM (local time) - 3.5ft (1.0m), 11s period, S swell with cross-offshore winds.
- Most powerful swell: Sunday 6 Sep, 10AM (local time) - 5ft (1.5m), 10s period, S swell with 408 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 1PM (local time) - 2ft (0.6m), 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 Wednesday (Sep 02) at 1PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.4m 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 1.5m 10s and forecast to arrive on Sunday (Sep 06) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Sep 05) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Wed 2nd Sep) | 2ft (0.6m) 10s |
| Best Surf | 7AM (Fri 4th Sep) | 3.5ft (1.0m) 11s |
| Most Powerful | 10AM (Sun 6th Sep) | 5ft (1.5m) 10s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ll be straight with you—this stretch for Shark Island (Cronulla) is a tough one. We’ve got a long, frustrating run of small, wind-affected, or just plain ugly surf coming up. The first real day with anything on offer doesn’t show up until Sunday, September 6th, so we’re staring down a week of flat-to-poor conditions before we see a glimmer of hope. For a spot that’s fairly exposed and a consistent reef, this is a quiet spell.
For the first week, it’s a write-off. Monday the 31st of August kicks off with a tiny 3 ft south swell, but it’s getting slapped by a cross wind, so it’s choppy and messy. The combined swell energy is a weak 204—barely a pulse. Tuesday and Wednesday are even smaller and still cross-onshore, with energy dropping to 122 on Wednesday morning. The water’s sitting at 63°, which is about 1° cooler than average, so it’s a bit chilly but nothing wild. Thursday brings some offshore wind on a 2 ft south swell, but that’s just too small to get excited about. Friday the 4th of September shows a slight bump to 3 ft with a 12-second period, giving a bit of energy (291), but it’s cross-shore and messy again. Honestly, it’s all poor.
Then, finally, on Sunday the 6th of September, we get our standout. A 5 ft south swell rolls in, and the wind goes glassy in the morning—zero wind. This is the best window of the entire forecast. The combined swell energy jumps to 421, so there’s some proper push. The swell is coming from the south, which is pretty close to its optimum southeast direction, so it should set up nicely over the reef. It’s not huge, but with clean, glassy conditions, the waves will be lined up and user-friendly for the advanced crew this break is for. That Sunday morning is the one to circle. The only catch? Crowds are possible here—it’s a well-known reef and word will get out.
After that glory window, it’s back to average. Monday the 7th gets onshore and drops back to 2 ft. The rest of the second week sees pulses of bigger swell—up to 8 ft on Saturday the 12th—but the wind is howling from the south at 35 km/h or stronger, with energy spiking to 1113, which is strong. That big swell is only for experts if you’re game, but with that wind, it’s more of a blown-out mess. On Tuesday the 15th, we get another glassy morning on a tiny 3 ft south swell, but that’s more of a grovel session than anything special.
So, bottom line: the whole 16-day run is a drought until Sunday morning, September 6th. That’s your mark. Glassy, clean, a bit of size. Everything else is either too small, too windy, or too far off. Hang in there.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 14°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Sat morning, min 12°C on Sat night). Winds increasing (light winds from the NNW on Fri morning, strong winds from the NW by Sat morning). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 8 | S 9 | S 9 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | S 12 | S 9 | S 11 | S 9 | S 9 | S 9 | S 10 | S 8 | NE 5 |
Wave Graph | |||||||||||||||||||||
113 | 101 | 102 | 151 | 143 | 100 | 77 | 75 | 50 | 53 | 53 | 33 | 264 | 97 | 181 | 81 | 38 | 25 | 408 | 161 | 80 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross | cross-off | off | cross-off | cross | on | cross | cross-off | cross-off | off | glassy | on | cross |
High Tide | 10:07AM1.41m | 10:15PM1.37m | 10:47AM1.44m | 11:01PM1.26m | 11:33AM1.44m | 11:54PM1.14m | 12:27PM1.43m | 1:01AM1.04m | 1:31PM1.43m | 2:23AM0.97m | 2:45PM1.44m | 3:51AM0.97m | 3:59PM1.49m | ||||||||
Low Tide | 4:12PM0.26m | 4:27AM0.19m | 5:02PM0.29m | 5:05AM0.26m | 6:00PM0.32m | 5:50AM0.33m | 7:08PM0.35m | 6:45AM0.41m | 8:29PM0.35m | 7:55AM0.47m | 9:51PM0.31m | 9:14AM0.47m | 11:01PM0.23m | ||||||||
6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | |
— | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 18 | 17 | 16 | 22 | 25 | 20 | 26 | 26 | 21 | 22 | 22 | 16 | 18 | 18 | 17 | 23 | 23 | 18 | 17 | 17 | 17 |
Feels °C | 15 | 14 | 14 | 18 | 22 | 17 | 23 | 24 | 18 | 17 | 16 | 10 | 13 | 12 | 14 | 16 | 19 | 15 | 14 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | S 9 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | S 12 | S 9 | S 11 | S 9 | S 9 | S 9 | S 10 | S 8 | ENE 5 |
113 | 101 | 102 | 151 | 143 | 100 | 77 | 75 | 50 | 53 | 53 | 33 | 264 | 97 | 181 | 81 | 38 | 25 | 408 | 161 | 33 | |
Swell 2 Height (m) Direction Period (s) | SSE 15 | SSE 16 | SSE 14 | ENE 9 | ENE 4 | ENE 6 | NE 6 | ENE 10 | ENE 10 | NE 6 | NE 7 | ENE 10 | ENE 10 | ENE 10 | NE 5 | NE 5 | NE 5 | NE 6 | E 11 | E 10 | S 8 |
74 | 50 | 64 | 15 | 13 | 22 | 11 | 33 | 19 | 11 | 7 | 19 | 19 | 19 | 13 | 7 | 4 | 1 | 9 | 8 | 41 | |
Swell 3 Height (m) Direction Period (s) | ENE 9 | ENE 9 | NE 4 | ENE 4 | ENE 11 | ENE 10 | ENE 10 | NE 6 | SSE 13 | ENE 10 | ENE 10 | NE 6 | NE 7 | S 12 | E 10 | E 9 | E 9 | E 9 | NE 5 | S 17 | S 11 |
17 | 16 | 2 | 1 | 37 | 34 | 33 | 8 | 17 | 18 | 19 | 6 | 8 | 3 | 7 | 7 | 7 | 6 | 1 | 22 | 59 | |
Wind waves Height (m) Direction Period (s) | — | ENE 2 | NNE 4 | — | NE 5 | NW 3 | NW 3 | NE 6 | NW 3 | WNW 3 | WSW 3 | — | W 3 | ENE 3 | — | NW 2 | WNW 3 | SW 2 | NNE 5 | ENE 3 | NE 5 |
— | 1 | 8 | — | 47 | 2 | 1 | 33 | 2 | 2 | 2 | — | 2 | 6 | — | 1 | 7 | 1 | 3 | 6 | 80 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 60 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 17 | 1 | 1 | 85 | 1 | 23 | 18 | 32 | 0 | 132 | 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.











