Surf Forecasts:
Shark Island (Cronulla) surf forecast from 19 Aug 2026:
- Best quality surf: Thursday 20 Aug, 7PM (local time) - 4.5ft (1.3m), 6s period, NE swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 4ft (1.2m), 10s period, E swell with 267 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 7PM (local time) - 4.5ft (1.3m), 6s period with NE 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 (Aug 20) at 7PM. The primary swell is predicted to be 1.3m and 6s period with a secondary swell of 0.9m and 6s. Another secondary swell of 0.1m and 10s is also forecast. 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 1.2m 10s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Aug 26) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Thu 20th Aug) | 4.5ft (1.3m) 6s |
| Best Surf | 7PM (Thu 20th Aug) | 4.5ft (1.3m) 6s |
| Most Powerful | 4PM (Wed 19th Aug) | 4ft (1.2m) 10s |
Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.
The Lowdown
Alright, Rusty here. This is the outlook for Shark Island (Cronulla) for the next fortnight.
The old girl is gonna be pretty quiet for a while, with a whole lot of nothing happening this week. We’re looking at a gap of about six days from Wednesday morning the 19th until Tuesday the 25th where the surf is just too poor to get excited about. Small, messy, and blown out by onshore winds. It’s not even worth paddling out for most of it.
The first real glimmer of hope comes on Tuesday the 25th afternoon. The wind swings to a cross-offshore from the SSE, and while the swell is only 3ft from the ENE with a short period of 8 seconds, it’s at least surfable. The energy is weak too, with a combined reading of 114. Don’t get your hopes up, but you might snag a few grovelly ones if you’re desperate.
Then, things get interesting. Thursday the 27th morning is the absolute standout of this entire outlook. We’ve got a solid 8ft swell from the south, with a period of 10 seconds, driving a massive 1447 in combined energy. The wind is a clean offshore from the SW, and it’s glassy. This is prime, powerful reef-break territory. That said, at 8ft, this is for experienced surfers only. The water is 62°, which is a bit colder than normal for this time of year.
Friday the 28th keeps the momentum going with a cleaner 5ft swell from the SSE, offshore winds from the WSW, and a combined energy of 345. This is a much more manageable size for a broader crew, and the conditions are looking clean.
The following Saturday the 29th gets messy again with a fresh breeze, but Sunday the 30th morning comes back strong. We’ve got a 7ft southerly swell, a moderate offshore wind from the SSW, and a combined energy of 687. That’s a very good window for the more experienced paddle-out.
Into the first week of September, the swell starts to drop off. Monday the 31st is a bit lumpy, with a 5ft southerly swell. Tuesday the 1st of September brings a 5ft swell from the SE with a very long period of 12 seconds, generating 804 in combined energy. That long period is great for the reef, but cross-shore winds will keep it a little bumpy. Wednesday the 2nd of September is glassy in the morning with a 4ft SE swell, but the energy is only 248, so it’s surfable but not spectacular.
The standout for the entire period is hands down Thursday the 27th morning. The south swell is pumping, winds are offshore, and it’s clean. It’s a date to circle for those who know what they’re doing.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Fri afternoon. Warm (max 21°C on Thu afternoon, min 13°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Warm (max 22°C on Mon morning, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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) | ESE 10 | E 10 | NE 6 | NE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | S 9 | E 4 | S 9 | E 9 | NE 5 | S 9 | S 9 | NE 6 | ENE 7 | ENE 8 | NE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 82 | 267 | 97 | 50 | 40 | 88 | 48 | 26 | 9 | 9 | 13 | 15 | 24 | 56 | 55 | 25 | 26 | 152 | 142 | 98 | 62 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | on | cross-off | cross-off | cross-off | cross-off | off | cross | glassy | cross-on | on | cross | cross | cross-on | cross-on | cross | cross-off | off |
High Tide | 1:00PM1.31m | 1:18AM0.96m | 1:56PM1.28m | 2:30AM0.88m | 2:59PM1.27m | 3:51AM0.87m | 4:04PM1.30m | 5:01AM0.89m | 5:01PM1.35m | 5:53AM0.95m | 5:50PM1.41m | 6:35AM1.01m | 6:31PM1.48m | ||||||||
Low Tide | 7:39PM0.49m | 7:03AM0.48m | 8:53PM0.51m | 7:59AM0.54m | 10:10PM0.50m | 9:07AM0.57m | 11:13PM0.45m | 10:15AM0.55m | 00:02AM0.38m | 11:12AM0.51m | 00:42AM0.31m | 12:01PM0.44m | 1:16AM0.24m | ||||||||
 | |  |  | |  |  |  |  | | | | | | | | | | | |  | |
 | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — |
mm | — | — | — | — | — | — | — | 1 | 2 | — | — | — | — | — | — | — | — | 2 | 2 | 4 | 2 |
Temp °C | 16 | 16 | 16 | 19 | 21 | 18 | 20 | 16 | 16 | 17 | 16 | 16 | 17 | 17 | 15 | 22 | 22 | 18 | 18 | 16 | 14 |
Feels °C | 14 | 12 | 13 | 15 | 19 | 16 | 17 | 13 | 13 | 14 | 13 | 16 | 14 | 13 | 12 | 20 | 18 | 16 | 17 | 14 | 10 |
Swell 1 Height (m) Direction Period (s) | E 6 | S 8 | ENE 6 | ESE 6 | ESE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | NE 6 | SE 4 | S 9 | S 8 | ENE 5 | E 5 | S 9 | ENE 6 | ENE 7 | ENE 8 | NE 8 |
| kJ | 29 | 6 | 57 | 43 | 23 | 88 | 48 | 26 | 9 | 9 | 5 | 4 | 24 | 34 | 19 | 15 | 26 | 80 | 142 | 98 | 62 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | — | ESE 9 | ENE 5 | E 10 | S 12 | S 11 | SE 7 | S 10 | SSW 5 | S 9 | ENE 6 | ESE 4 | S 15 | S 11 | S 9 | NE 8 | S 9 | S 9 | S 8 | S 9 |
| kJ | 82 | — | 70 | 19 | 2 | 3 | 2 | 2 | 2 | 4 | 13 | 3 | 3 | 17 | 55 | 25 | 15 | 26 | 24 | 12 | 14 |
Swell 3 Height (m) Direction Period (s) | SE 7 | — | S 8 | E 11 | — | — | S 11 | S 11 | SE 7 | S 9 | S 4 | S 9 | ENE 6 | S 20 | ENE 9 | NE 8 | S 16 | ENE 9 | — | S 14 | S 15 |
| kJ | 34 | — | 5 | 2 | — | — | 2 | 2 | 2 | 2 | 1 | 6 | 4 | 8 | 8 | 18 | 19 | 8 | — | 4 | 4 |
Wind waves Height (m) Direction Period (s) | ENE 5 | E 10 | NE 6 | NE 6 | ENE 6 | — | — | — | — | SW 4 | SSE 2 | E 4 | — | E 9 | NE 5 | — | ENE 5 | NE 6 | NNW 3 | W 3 | SW 4 |
| kJ | 46 | 267 | 97 | 50 | 40 | — | — | — | — | 9 | 1 | 15 | — | 56 | 47 | — | 25 | 152 | 7 | 1 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 433 | 1 | 1 | 7 | 0 | 1 | 7 | 312 | 312 | 379 | 7 | 7 | 282 | 1 | 1 | 15 | 15 | 1 | 0 | 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.
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