Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 2 am 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
15.2°C
0.4° 

Cunns surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Cunns surf forecast from 27 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 3PM (local time) - 4ft (1.2m), 19s period, SW swell with offshore winds.
  • Most powerful swell: Thursday 3 Sep, 6PM (local time) - 7ft (2.2m), 14s period, SW swell with 1,918 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 6PM (local time) - 4.5ft (1.3m), 16s period with SW swell.

Best Forecast Surf Conditions for Cunns this week:

The surf forecast for Cunns over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 28) at 6PM. The primary swell is predicted to be 1.3m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Cunns in the next 16 days are 2.2m 14s and forecast to arrive on Thursday (Sep 03) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Aug 29) at 9PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Fri 28th Aug)4.5ft (1.3m) 16s
Best Surf 3PM (Sun 30th Aug)4ft (1.2m) 19s
Most Powerful 6PM (Thu 3rd Sep)7ft (2.2m) 14s

Table - best surf conditions forecast for Cunns over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s have a proper look at what’s coming our way for the next couple of weeks.

Overall, we’ve got a bit of a slow start at Cunns, but there is some real quality lurking in the back half of the forecast. The first few days are pretty lackluster, with onshore winds and marginal conditions, but once the wind swings around to offshore and the energy picks up, this reef setup could serve up some memorable ones.

Friday August 28th is a write-off, honestly. A bumpy 5ft SW groundswell with a long 16 second period is being shredded by a strong 15 mph NNE breeze. It’s messy, choppy, and just not worth paddling out for.

Saturday August 29th is a bit better, but still underwhelming. The swell drops to 3ft from the SW, but by the afternoon the wind goes offshore from the ESE at 12 mph. The waves will be clean, but the energy is weak, so it’s a grovel session at best.

Sunday August 30th is where things start to get interesting. The morning is tiny at 2ft, but stick around for the afternoon. The wind turns offshore from the ESE at 9 mph, and the swell jumps to 4ft from the SW with a very long 19 second period. That’s proper groundswell energy. It’s excellent for experienced surfers, but be aware – that long period will make the waves break a bit straight on a beach setup. Cunns is a reef, so it should handle it nicely. The water temp is 59°, about average for this time of year.

Monday August 31st has a decent pulse of 5ft SW swell with that same long 18-19 second period. The morning is cross-shore from the NNE, making it a bit lumpy, but the afternoon cleans right up with a NE cross-off breeze at 9 mph. Clean, punchy, and good energy in the water. A decent day to be in the water.

Then we hit a mid-week slump. Tuesday September 1st is blown out with strong onshore winds, and Wednesday September 2nd is glassy in the morning with 4ft swell – that’s your window, because the wind is calm, and it’ll be smooth as glass.

Now, Friday September 4th into the weekend is the standout. Friday morning is glassy with a 6ft SW swell. The wind is light from the WNW at 3 mph – that’s practically a mirror. This is excellent, clean surf for experienced surfers. The afternoon holds strong with 6ft and a gentle offshore breeze. This is the pick of the first week.

Saturday September 5th and Sunday September 6th stay solid. Saturday is 5ft with light offshore winds. Sunday morning has a 7ft SSW swell with a fresh offshore ESE breeze – that’s a powerful combo. It’s clean and punchy, but that 13 second period is still decent groundswell.

Into the second week, look at Saturday September 12th. That’s a serious pulse. You’ve got a 7ft SW groundswell with a 17 second period and light offshore wind from the SE at only 3 mph in the morning. That’s strong and powerful. The waves will be well overhead, long, and clean. This is for experienced surfers only, no question. It’s a long way out, so keep an eye on it, but if it comes together, it’ll be one of the best days of the month.

Overall, the window from Sunday August 30th, through Monday August 31st, then a big glass-off on Friday September 4th, and that big long-range pulse on Saturday September 12th are your best bets.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 25°C on Fri afternoon, min 18°C on Sun morning). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Wed night. Warm (max 26°C on Tue morning, min 14°C on Tue night). Winds decreasing (strong winds from the N on Tue morning, calm by Wed morning).

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
2
1
2
2
1
4
4
2
4
2
0
0
2
3
2
2
1
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)
1.5
SW
16
1.4
SW
16
1.1
SW
14
1
SW
14
0.9
SW
13
0.8
SW
13
0.6
SW
19
1.2
SW
19
1.3
SW
17
1.6
SW
19
1.6
SW
18
1.4
SW
16
1.2
SW
16
1.2
SW
17
1.2
SW
16
1.1
SW
16
1.1
SW
16
1.3
SW
14
1.4
SW
14
1.6
SW
14
1.8
SW
14
Wave Graph
Metric surfscale
Energy kJ
1144
906
536
390
290
193
236
1016
1050
1642
1453
1014
719
831
710
532
619
641
802
957
1336
Wind (km/h)
25
NNE
15
NNE
20
NE
20
NE
20
ESE
15
E
20
ENE
15
ESE
15
E
20
NNE
15
NE
20
NNE
40
N
30
WNW
15
SSW
0
N
20
S
20
E
15
SW
25
WSW
10
WSW
Wind State
cross
cross
cross-off
cross-off
off
off
cross-off
off
off
cross
cross-off
cross
cross-on
on
cross
glassy
cross-off
cross-off
cross-on
cross-on
cross-on
High Tide
12:43PM1.41m
00:53AM1.09m
1:03PM1.40m
1:13AM1.18m
1:22PM1.34m
1:34AM1.23m
1:40PM1.24m
1:55AM1.26m
1:54PM1.12m
2:17AM1.24m
2:01PM0.98m
2:38AM1.18m
1:55PM0.86m
2:56AM1.07m
Low Tide
7:04PM-0.02m
6:45AM-0.05m
7:18PM-0.05m
7:10AM-0.06m
7:32PM-0.05m
7:36AM-0.03m
7:45PM-0.04m
8:01AM0.06m
7:57PM-0.01m
8:24AM0.19m
8:04PM0.03m
8:42AM0.36m
8:05PM0.07m
cloud
cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
rain showers
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
6:58
6:58
6:56
6:56
6:54
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:17
6:19
6:19
6:20
6:20
6:21
6:22
 mm
1
Temp °C
22
25
24
22
23
21
21
22
19
22
24
23
26
26
15
17
15
14
16
16
15
Feels °C
16
20
19
18
18
16
17
18
15
18
20
18
19
19
12
15
12
11
12
12
13
  • 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 Cunns Surf forecast

The above surf forecast table for Cunns provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cunns can be found by selecting the local surf guide option on the grey menu. Our Cunns 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 (Cunns) 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 Cunns 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.

Are you planning a holiday in Nullarbor? If you are looking for accommodation near Cunns, camping, hotels and holiday cottages in Nullarbor, consider staying in Thevenard which is 64 km (40 miles) away.

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