Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 2 pm 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
16.0°C
0.5° 

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


Cunns surf forecast from 5 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 12AM (local time) - 7.5ft (2.3m), 14s period, SW swell with glassy winds.
  • Most powerful swell: Wednesday 9 Sep, 6PM (local time) - 8ft (2.5m), 18s period, SSW swell with 3,663 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 12AM (local time) - 7.5ft (2.3m), 14s 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 Sunday (Sep 06) at 12AM. The primary swell is predicted to be 2.3m and 14s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Cunns in the next 16 days are 2.5m 18s and forecast to arrive on Wednesday (Sep 09) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Wednesday (Sep 09) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sun 6th Sep)7.5ft (2.3m) 14s
Best Surf12AM (Sun 6th Sep)7.5ft (2.3m) 14s
Most Powerful 6PM (Wed 9th Sep)8ft (2.5m) 18s

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


The Lowdown

Alright, crew, it’s Rusty here, and I’m breaking down the Cunns reef for the next couple of weeks. We’ve got a bit of a slow burn, but if you’re patient, there’s some serious juice on the horizon.

The first few days are a total loss. The opening window is a messy, choppy cross-on wind, so we’re looking at about a day and a half of nothing until the first real chance to paddle out on Sunday morning, September 6th.

The big one to circle on your calendar is Sunday morning, September 20th. That’s a long way out, but it’s got the makings of a classic. We’re looking at a heavy 10-foot swell from the south-west, with a very long period of 20 seconds. That’s a proper groundswell, packing a massive energy reading of 5850. The wind is looking light and variable, almost glassy, which will make for clean, heavy lines. This is for experts only – that size is no joke. The reef should handle that long-period energy well, offering up some deep, freight-train barrels.

Before that, we have a few other sessions to consider. The first real window is Sunday morning, the 6th. Cunns (Southeast) sees a 6-foot south-west swell, with a nice 14-second period. The wind is a clean, cross-offshore north-easterly at 9 mph. That’s a solid combo, and the combined energy is a moderate 1343. It’s going to be clean and good for experienced surfers.

Monday morning, the 7th, drops down to 3 feet, but with a solid offshore breeze from the ESE at 16 mph. The energy is weaker at 371, but it’ll be clean. The afternoon picks up a bit to 4 feet with a similar offshore wind, better shape, and a combined energy of 718.

Tuesday morning, the 8th, is another good one. 5 feet from the south-west, a very long period of 17 seconds, and a moderate offshore wind. The combined energy is a strong 1519. It’s clean, powerful, and for the experienced crew.

The 15th of September, a Tuesday morning, also looks promising. A 6-foot south-west swell with a 15-second period, and a light cross-offshore breeze. That’s a solid 1776 of combined energy, and it’ll be clean. Good for experienced surfers again.

The water temp is sitting at about 61°F, which is pretty normal for this time of year, so a 3/2 wetsuit should be fine.

The 20th of September is the one to circle, though. That 10-foot, 20-second swell from the south-west is the big daddy of the forecast. The wind is looking perfect. But remember, it’s a long way out, so keep an eye on it. The reef is inconsistent, so when it’s on, it’s on, but you’ll need to be patient for the sets. And with that kind of size, crowds are a possibility.

Stay safe, and I’ll see you in the water.

Rusty

Short Range Forecast

Mostly dry. Very mild (max 15°C on Sun morning, min 11°C on Sun night). Winds increasing (calm on Sat night, fresh winds from the SE by Sun night).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 19°C on Fri morning, min 8°C on Wed night). Mainly strong winds.

Sat
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
4
4
2
1
2
3
3
4
3
3
2
4
3
2
3
3
1
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.4
SW
13
2.3
SW
14
1.9
SW
14
1.6
SW
14
1.2
SW
13
0.9
SW
13
1.2
SSW
13
1.1
SW
18
1.6
SW
17
1.6
SW
16
1.5
SW
16
1.8
SW
17
2.4
SSW
18
2.3
SSW
17
1.9
SW
16
1.9
SW
16
1.6
SW
15
1.3
SW
15
1.1
SW
14
1.3
SW
17
Wave Graph
Metric surfscale
Energy kJ
2012
1884
1343
1033
503
286
514
850
1519
1398
1096
1915
3495
2939
1922
1715
1103
685
514
897
Wind (km/h)
25
SW
5
S
15
NE
25
SE
30
SE
25
ESE
20
ESE
30
SE
20
SE
25
SE
35
SE
40
ESE
30
ESE
30
E
30
E
25
ESE
20
E
25
NE
15
NE
20
NNE
Wind State
cross-on
glassy
cross-off
cross-off
cross-off
off
off
off
off
cross-off
off
off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross
High Tide
2:38AM0.77m
11:43AM0.99m
1:29AM0.68m
11:44AM1.13m
00:44AM0.70m
11:57AM1.23m
00:28AM0.79m
12:11PM1.28m
00:26AM0.90m
12:24PM1.29m
00:33AM1.03m
12:37PM1.26m
00:44AM1.14m
Low Tide
7:31PM0.13m
6:09AM0.69m
7:06PM0.13m
5:24AM0.54m
6:51PM0.12m
5:29AM0.37m
6:45PM0.11m
5:45AM0.23m
6:43PM0.10m
6:04AM0.12m
6:44PM0.07m
6:23AM0.05m
6:47PM0.04m
part cloud
clear
clear
clear
part cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:48
6:47
6:46
6:43
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:23
6:23
6:24
6:24
6:25
6:27
 mm
Temp °C
14
13
15
14
13
13
14
13
13
13
13
12
14
13
14
18
16
19
22
22
Feels °C
9
10
13
9
8
8
10
8
9
7
7
4
8
5
7
11
10
13
16
17
  • 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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