Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 2 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
15.5°C
0.0° 

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


Cunns surf forecast from 11 Sep 2026:

  • Best quality surf: Wednesday 16 Sep, 12PM (local time) - 5ft (1.6m), 15s period, SW swell with offshore winds.
  • Most powerful swell: Tuesday 15 Sep, 6PM (local time) - 6ft (1.9m), 14s period, SSW swell with 1,447 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 6AM (local time) - 4ft (1.2m), 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 Monday (Sep 14) at 6AM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 0.3m and 19s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Cunns in the next 16 days are 1.9m 14s and forecast to arrive on Tuesday (Sep 15) 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 1.2m 5s period and expected on Tuesday (Sep 15) at 9PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 14th Sep)4ft (1.2m) 14s
Best Surf12PM (Wed 16th Sep)5ft (1.6m) 15s
Most Powerful 6PM (Tue 15th Sep)6ft (1.9m) 14s

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


The Lowdown

Alright, Rusty here. Let's talk about the only show in town for the next couple of weeks. It's a bit of a mixed bag, but there are a few windows where this place will be absolutely pumping.

So, the long-range picture is looking pretty interesting. The first few days are a write-off, with messy, onshore winds and weak, poor-quality surf. You'll be staring at flat, choppy water. That dry spell lasts right through the weekend and into Monday morning. But don't write it off yet.

The first real glimmer of hope comes on Monday, September 14th. We're looking at a clean start to the week. The swell is only a small 2.3 ft from the SW, with a solid 14-second period – proper groundswell energy, but it's weak, with a combined energy of just 400. The wind goes glassy in the morning, which is a dream for a reef like Cunns. The water temp is about average for this time of year. It'll be small and clean, a real morning glass-off special.

Things start to build through the rest of that week, but the wind stays tricky. We've got some solid, clean windows with offshore winds on Wednesday. On Wednesday, September 16th, the swell picks up to a clean 5.6 ft from the SW, with a long 15-second period. The combined energy jumps to 1254, which is a solid, moderate push. The wind is offshore, making it excellent for experienced surfers. This is a standout. Because Cunns is an exposed reef that’s inconsistent, you need to pick your moment, but when that offshore wind hits that SW groundswell, it'll be throwing out some gems. The sets will have some breathing room with that long period.

There's another gap before the next real interesting window. The swell dies right down again into the following weekend with strong, messy cross-shore winds. Not worth a paddle.

Then, looking ahead to the second week, we've got another promising run. On Sunday, September 20th, the swell jumps back up to a solid 6.2 ft, still from the SW, with the combined energy hitting 1832. The wind is a clean cross-off. It's looking promising but less certain this far out.

The real standout for the longer range is peaking around Monday, September 21st and into Tuesday morning. Swell size is up to 6.9 ft from the SW, with a very long 16-17 second period. The energy is strong, hitting 2413 and 1915. This will be a powerful, groundswell-driven push. For a reef like Cunns, that long period and SW direction will wrap in beautifully. Monday morning has a nice cross-off breeze, which will keep it clean. This is expert territory at this size. The sets will be wide-set, making the paddle out a bit easier, and the waves will be lined up and powerful.

And finally, Thursday, September 24th shapes up as another excellent call for the experienced crew. The swell drops back a touch to 4.9 ft, but it's from the SSW with a 14-second period and combined energy of 1358. The wind goes full offshore in the afternoon. Clean, lined-up waves for the guys who know the lineup.

So, keep your eyes on Wednesday the 16th for a tidy session, and the following Monday and Tuesday for some serious, long-period groundswell. It's a reef, it's inconsistent, and it's for the experienced. But when it's on, it's on.

Short Range Forecast

Mostly dry. Warm (max 28°C on Sat afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the WSW on Sat night, calm by Mon morning).

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Thu afternoon, min 8°C on Tue night). Mainly fresh winds.

Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
2
2
2
2
2
2
2
3
3
3
1
1
0
0
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)
1.1
SW
17
1
SW
16
0.7
SW
18
1.2
SW
16
1.1
SW
16
1
SW
14
0.8
SW
14
1
SW
14
1.2
SW
16
1.6
SW
15
1.6
SW
14
1.5
SW
14
1.6
SW
15
1.6
SW
15
1.5
SSW
15
1.1
SW
14
1
SW
14
0.8
SW
13
0.6
SW
16
0.6
SW
15
0.6
SW
15
Wave Graph
Metric surfscale
Energy kJ
742
474
307
757
627
412
234
390
728
1048
1092
899
1123
1155
1014
521
390
205
155
136
171
Wind (km/h)
30
N
25
NNW
30
N
25
WSW
25
WSW
10
SW
5
ESE
15
S
15
SE
30
SE
35
SE
35
ESE
35
E
25
SE
20
E
30
NE
15
NE
20
NNE
35
N
25
N
30
NNE
Wind State
cross
cross-on
cross
cross-on
cross-on
cross-on
glassy
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross
cross
cross-on
cross
High Tide
12:48PM1.22m
00:58AM1.24m
12:58PM1.18m
1:14AM1.30m
1:09PM1.14m
1:31AM1.32m
1:19PM1.09m
1:48AM1.30m
1:29PM1.04m
2:06AM1.24m
1:37PM0.97m
2:22AM1.15m
1:38PM0.90m
2:36AM1.02m
Low Tide
6:53PM-0.01m
7:01AM0.02m
7:01PM-0.05m
7:19AM0.05m
7:11PM-0.08m
7:37AM0.10m
7:23PM-0.08m
7:53AM0.17m
7:36PM-0.05m
8:08AM0.26m
7:47PM0.01m
8:19AM0.37m
7:53PM0.09m
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:39
6:39
6:37
6:35
6:35
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:27
6:28
6:28
6:29
6:30
6:30
6:30
 mm
Temp °C
25
28
26
15
15
13
16
16
15
13
13
12
13
16
15
19
23
22
23
27
25
Feels °C
19
24
21
11
11
12
13
12
12
7
6
5
7
9
10
13
17
16
15
20
18
  • 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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