Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 2 am 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
15.5°C
0.1° 

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


Cunns surf forecast from 28 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 3PM (local time) - 4ft (1.2m), 19s period, SW swell with offshore winds.
  • Most powerful swell: Saturday 5 Sep, 3AM (local time) - 8ft (2.5m), 15s period, SW swell with 3,103 kJ wave energy.
  • Next surfable swell (1★+): Saturday 29 Aug, 12PM (local time) - 3ft (0.9m), 13s 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 Saturday (Aug 29) at 12PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.1m and 23s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Cunns in the next 16 days are 2.5m 15s and forecast to arrive on Saturday (Sep 05) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Sep 04) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Sat 29th Aug)3ft (0.9m) 13s
Best Surf 3PM (Sun 30th Aug)4ft (1.2m) 19s
Most Powerful 3AM (Sat 5th Sep)8ft (2.5m) 15s

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


The Lowdown

Righto, grab your wettie, let’s have a look at what’s comin’. It’s gonna be a mixed bag over the next couple of weeks, but there are a few windows where it’ll come together proper.

The first real chance of a surf kicks off on Sunday, August 30th, with Cunns gettin’ a clean, gentle offshore breeze from the ESE. Swell is 4 ft from the SW with a nice long period of 19 seconds – that’s proper groundswell energy. The combined energy is strong at 1016, so you’ll feel the push. That long period will make for some nice lines on the reef, but it can also make it a bit walled-up if you’re at a beach break. This is a reef, so it’ll handle it fine. This afternoon window is your standout of the whole outlook: clean, good size, and cracking energy. Don't sleep on it.

Now, Monday, August 31st, the swell bumps up to 5 ft, still SW, still a long 18-19 second period. The energy goes through the roof (1642 and 1453), but the wind swings around to a NNE cross-shore, so the surface won’t be as clean. It’ll be fun for the experienced crew, but a bit bumpy.

Then we hit a rough patch. From Tuesday, September 1st, right through to the end of the first week, the wind gets ugly. Strong cross-onshore and onshore winds – 25 mph from the N and WSW, then a couple of days of 22–31 mph from the W and SW. The swell sticks around, but it’s going to be a mess. There’s a big spike in energy on the 1st (2045) and on the 5th (2048) but with those winds, it’s blown out. For a reef setup, this is looking more like a kite-surfing session than a paddle-surfing one.

There’s a small glimmer on Thursday, September 3rd in the afternoon. Some clouds, a cross-offshore SE breeze at 9 mph, and a clean 5 ft SW swell. The energy is moderate (875). It’s a decent window, but it’s brief before the wind turns again.

The second week finally shows a promising turn. Tuesday, September 8th and Wednesday, September 9th look fantastic. We get a solid 7 ft to 8 ft SW groundswell (16-second period) with a clean cross-offshore breeze from the S and SE. The energy on the 8th afternoon is massive (4681), and the wind is light enough to keep it clean. This is for experienced surfers only – that size on a reef with that much juice is serious. For the rest of us, Wednesday the 9th is still really good, with 6 ft swells and clean offshore winds. That’s your second best bet.

After that, the swell backs off and the wind gets messy again from the north, with onshore flow returning. There’s a quick, clean southerly offshore on Thursday, September 10th afternoon with 5 ft swell, but the energy is only moderate (975). It’s a last little pulse before it all fades out into muddy conditions again.

So, to sum it up: Sunday afternoon, August 30th is your top pick for clean, quality waves. Tuesday, September 8th afternoon is for the big-wave crew. Get out there when it’s clean, because the weather isn't messing around.

Stay safe out there.
Rusty

Short Range Forecast

Mostly dry. Warm (max 24°C on Mon afternoon, min 18°C on Sat night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Tue morning, min 13°C on Tue night). Winds decreasing (strong winds from the WSW on Tue afternoon, calm by Thu morning).

Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
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
2
2
1
4
4
2
2
1
0
0
1
2
0
4
2
3
1
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)
0.9
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
1.3
SW
16
1.1
SW
16
1.4
SW
17
1.6
SW
16
1.1
SW
15
1.8
SW
16
2.3
SW
14
1.5
SW
14
1.5
SW
14
1.5
SW
14
1.5
SW
14
1.4
SW
14
2.4
SW
14
Wave Graph
Metric surfscale
Energy kJ
331
290
193
236
1016
1050
1642
1453
909
627
1145
1215
525
1493
2119
862
825
790
899
791
2293
Wind (km/h)
15
NE
20
SE
15
E
15
ENE
15
ESE
15
E
20
NNE
15
NNE
20
NNE
40
N
40
WSW
25
SW
10
WSW
20
WSW
15
SSW
10
NNE
15
SE
30
NE
25
NNW
35
W
45
WSW
Wind State
cross-off
off
off
cross-off
off
off
cross
cross
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-on
cross-on
cross-on
High Tide
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
1:20PM0.80m
3:04AM0.92m
Low Tide
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
8:45AM0.54m
7:54PM0.11m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
6:58
6:56
6:56
6:54
6:52
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:19
6:20
6:20
6:21
6:22
6:22
 mm
3
1
Temp °C
21
22
21
21
22
19
22
24
23
24
18
14
15
15
14
18
19
21
23
18
16
Feels °C
17
17
17
17
18
15
17
20
18
17
11
10
11
10
10
17
16
14
19
12
10
  • 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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