Shark Island (Cronulla) Surf Break

Lat Long: 34.06° S 151.16° E

Shark Island (Cronulla) Surf Forecast and Surf Report

Issued: 9 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Shark Island (Cronulla) sea temperature is
16.9° C
0.7° 

Shark Island (Cronulla) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Shark Island (Cronulla) surf forecast from 21 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 10PM (local time) - 3.5ft (1.0m), 8s period, S swell with offshore winds.
  • Most powerful swell: Thursday 27 Aug, 7PM (local time) - 4.5ft (1.3m), 11s period, S swell with 418 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 7PM (local time) - 3.5ft (1.0m), 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 Friday (Aug 21) at 7PM. The primary swell is predicted to be 1.0m and 6s period with a secondary swell of 0.7m and 6s. Another secondary swell of 0.1m and 7s 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 1.3m 11s and forecast to arrive on Thursday (Aug 27) at 7PM. 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 Sunday (Aug 23) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Fri 21st Aug)3.5ft (1.0m) 6s
Best Surf10PM (Wed 26th Aug)3.5ft (1.0m) 8s
Most Powerful 7PM (Thu 27th Aug)4.5ft (1.3m) 11s

Table - best surf conditions forecast for Shark Island (Cronulla) over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let's have a look at what Shark Island (Cronulla) has in store for us over the next couple of weeks. It’s a bit of a mixed bag, and we’ll have to be patient.

Right now, the start of the period is a real struggle. We've got some tiny swell from the ENE, but it's weak and short-period, with combined wave energy sitting at a paltry 50 (weak energy). The water temperature is sitting at 62°, which is about 1° cooler than average for this time of year, so nothing too unusual there. Friday morning is a write-off with "poor surf conditions" and a cross-offshore wind. Things don't improve much through the weekend, with a mix of onshore and cross-shore winds keeping the surface messy and the wave heights tiny.

We finally see a pulse of S swell arrive on Sunday the 23rd, with 4 ft swell on the morning, but it's plagued by a cross wind and only rates as "marginal". By Wednesday the 26th, we get a little flicker of hope. The morning sees a clean 3 ft swell from the ENE with an offshore SSW wind of 12 mph. It's not huge, and only rates as "surfable but very ordinary", but it's the first time we get a clean, offshore session. The combined energy is moderate at 151.

The real standout, and the clear best on offer, will be the morning of Thursday, the 27th of August. The swell picks up to a clean 4 ft out of the south, with a period of 10 seconds, giving it a bit of punch. The combined energy jumps to a moderate 372, and we are looking at glassy conditions with a light WSW breeze of 3 mph. Expect good surf conditions on that incoming S swell. This is a true reef break for advanced surfers, and it’s fairly consistent, though crowds are possible. The S swell direction isn't the optimum SE the spot loves, but it'll still produce clean, lined-up sets for those who know the take-off. Keep in mind that with a 4 ft swell, it's not going to be too intimidating for those comfortable in the line-up, but the reef bottom demands respect.

Following that, Friday the 28th also looks promising with another clean morning, 4 ft S swell, a 10-second period and a light cross-offshore wind. The energy is a solid 337, so another good call for the morning session. The following weekend and into the first week of September get a bit messy again, with winds switching onshore and the swell dropping off. There is a late pulse on the 5th of September with 4 ft from the SSE, but the winds are cross-shore and the conditions are only "marginal".

Overall, it's a 16-day window that's mostly quiet, but the period around the 27th and 28th of August offers a couple of solid early-morning windows for clean, fun waves at Shark Island. Don't expect much consistency outside of that.

- Rusty

Short Range Forecast

Light rain (total 4mm), mostly falling on Sat night. Warm (max 21°C on Fri morning, min 12°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Tue afternoon. Warm (max 20°C on Tue morning, min 12°C on Wed night). Winds decreasing (fresh winds from the NE on Mon afternoon, light winds from the SE by Wed afternoon).

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
0
2
2
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
ENE
6
0.7
ENE
6
0.5
NE
6
0.2
S
9
0.3
S
8
0.2
S
12
1.2
S
9
0.7
S
13
1
S
10
0.8
S
10
0.7
S
10
1
ENE
6
1.3
NE
6
1.1
NE
7
1
ENE
7
1
ENE
8
1.1
ENE
8
1
S
8
1.2
S
10
1.1
S
8
1.3
S
11
Wave Graph
Metric surfscale
Energy kJ
47
35
18
6
12
12
240
156
202
125
94
68
136
118
114
137
177
132
255
161
389
Wind (km/h)
10
NW
5
ENE
15
W
20
W
10
SE
0
SE
5
NW
10
NNE
10
NNW
20
NNE
30
NE
10
NNW
15
N
25
N
20
NNW
20
SSW
15
SE
15
WSW
5
WSW
15
ENE
10
WNW
Wind State
cross-off
glassy
cross-off
cross-off
cross
glassy
cross
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross
off
cross
cross-off
glassy
cross-on
cross-off
High Tide
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
7:12AM1.09m
7:09PM1.53m
7:47AM1.16m
7:45PM1.56m
Low Tide
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
12:44PM0.38m
1:49AM0.18m
1:24PM0.33m
2:19AM0.14m
clear
part cloud
clear
clear
clear
rain showers
light rain
clear
part cloud
clear
part cloud
part cloud
cloud
light rain
part cloud
clear
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:26
6:26
6:24
6:24
6:22
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:29
5:29
5:30
5:30
5:30
5:31
5:32
 mm
3
1
2
Temp °C
21
21
17
20
19
15
14
16
15
18
18
18
20
18
17
17
16
14
15
15
14
Feels °C
19
20
14
17
16
14
13
13
13
14
13
15
17
14
14
13
13
10
13
12
12
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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