Shark Island (Cronulla) Surf Break

Lat Long: 34.06° S 151.16° E

Shark Island (Cronulla) Surf Forecast and Surf Report

Issued: 9 pm 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Shark Island (Cronulla) sea temperature is
17.0°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 31 Aug 2026:

  • Best quality surf: Wednesday 2 Sep, 4PM (local time) - 2ft (0.6m), 10s period, S swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 7AM (local time) - 3.5ft (1.0m), 11s period, S swell with 248 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 4PM (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 4PM. The primary swell is predicted to be 0.6m and 10s 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 1.0m 11s and forecast to arrive on Monday (Sep 07) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Saturday (Sep 05) at 4PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Wed 2nd Sep)2ft (0.6m) 10s
Best Surf 4PM (Wed 2nd Sep)2ft (0.6m) 10s
Most Powerful 7AM (Mon 7th Sep)3.5ft (1.0m) 11s

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


The Lowdown

G'day, I'm Rusty. Let's have a look at what's on the cards for the next couple of weeks.

The outlook is a bit of a slow burn, with a lot of small, messy days to sit through before we get a serious pulse of swell. The first week is mostly a write-off for quality surf, with a few windows of clean but tiny waves that are only just surfable. The real standout is a massive, late-arriving swell that will be for experienced surfers only.

Right now, Shark Island (Cronulla) is dealing with a long stretch of poor conditions. The first solid recommendation doesn't come until Sunday morning, the 6th of September. This is a good one though. The morning will be glassy with a clean 4ft south swell, period of 10 seconds. The combined energy is moderate at 335. The water temp is sitting at 63°, which is about 1° below the average for this time of year, so it's pretty normal. Sunday arvo gets blown out by an onshore breeze, so make the most of the early session.

The next real chance is on the back of a bigger swell, but it's tricky. Tuesday morning, the 8th of September, has a 4ft ENE swell with a clean offshore wind from the SSW, but the period is a short 8 seconds, so it'll be a bit of a close-out at this reef. The combined energy is moderate at 260. It's surfable, but nothing to get too excited about.

Now, for the true standout. Hold onto your board. Wednesday morning, the 9th of September, is an absolute monster. We're looking at a 16ft south swell with an 11-second period, and it's glassy. The combined energy is a massive 5658, which is very strong. This is a serious, heavy groundswell. The swell direction is from the south, which is optimum for Shark Island, and the period is long, so it will be powerful and well-shaped. This is strictly for experts only. The surf will be too big and dangerous for anyone else. The swell holds into Thursday morning, the 10th, with a 13ft SE swell, again glassy, and energy at 3110. Another excellent session for the experienced crew.

The swell drops off from there, but Friday morning, the 11th of September, cleans up nicely with a 6ft east swell, 9-second period, and glassy conditions. The combined energy is 758. This will be a fun, clean morning for a broader range of surfers, but the swell is over 5ft, so beginners might find it a bit much.

Beyond that, from the 12th of September onwards, the surf gets small and messy again with onshore winds and poor conditions through to the end of the forecast period. The last few days of the window are not worth paddling out for.

The day to circle is Wednesday the 9th of September for the big, clean south swell at Shark Island. If you're not an expert, just watch from the rocks.

- Rusty

Short Range Forecast

Mostly dry. Warm (max 26°C on Wed morning, min 13°C on Mon night). Winds increasing (light winds from the NNW on Mon night, fresh winds from the WSW by Thu afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Sat morning, min 12°C on Sat night). Winds increasing (light winds from the WSW on Fri night, strong winds from the WNW by Sat afternoon).

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
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
1
0
0
0
0
0
0
0
1
0
0
1
0
0
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
S
9
0.8
S
11
0.8
S
11
0.7
S
10
0.6
S
10
0.6
S
10
0.5
S
10
0.5
S
10
0.5
S
10
0.4
SSE
10
0.9
S
10
0.5
ENE
10
0.4
S
11
1.2
NNE
6
0.4
S
9
0.3
S
9
0.9
S
11
0.4
S
12
0.6
S
14
Wave Graph
Metric surfscale
Energy kJ
102
151
143
100
77
75
50
53
53
33
168
55
37
81
26
15
191
49
142
Wind (km/h)
10
N
15
NNW
15
NNE
10
NNW
20
WNW
10
WSW
15
NNW
20
W
25
WSW
15
WSW
10
N
25
NE
15
NNW
10
WNW
40
WNW
25
WSW
10
S
20
E
10
NNE
Wind State
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-on
on
cross-on
cross-off
cross-off
off
cross-off
cross-on
cross-on
High Tide
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
4:27AM0.19m
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
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:13
6:11
6:11
6:09
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:36
5:37
5:37
5:37
5:38
5:39
 mm
1
Temp °C
16
22
23
19
26
26
21
23
22
16
18
18
17
26
25
18
16
16
15
Feels °C
15
18
19
16
21
23
17
18
15
10
13
13
15
19
17
13
12
12
13
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  • 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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