Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 8 am 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
15.7°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 23 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 6PM (local time) - 5ft (1.6m), 14s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 6PM (local time) - 6ft (1.8m), 18s period, SW swell with 2,036 kJ wave energy.
  • Next surfable swell (1★+): Sunday 23 Aug, 9PM (local time) - 4ft (1.2m), 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 Sunday (Aug 23) at 9PM. The primary swell is predicted to be 1.2m 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 1.8m 18s and forecast to arrive on Thursday (Aug 27) 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 0.8m 4s period and expected on Saturday (Aug 29) at 9PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 23rd Aug)4ft (1.2m) 16s
Best Surf 6PM (Tue 25th Aug)5ft (1.6m) 14s
Most Powerful 6PM (Thu 27th Aug)6ft (1.8m) 18s

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


The Lowdown

Alright, let’s talk surf.

The only break on the menu for the next 16 days is Cunns. It’s a reef, exposed to the southwest, and the water temp is 60.3°F, which is dead average for late August – nothing unusual there.

Sunday August 23rd is not the one. Morning has 5ft swell from the SW with a 17-second period, heaps of energy (1267), but the wind is cross from the NNE at 16 mph, chopping it up. Afternoon drops to 4.3ft with north wind at 12 mph, still cross. Marginal at best.

Monday August 24th is a write-off. Morning is clean with offshore west wind at 9 mph, but the swell is only 3.3ft with a short 14-second period (411 energy). Then the afternoon gets messy – 5.9ft swell but the wind screams from the SSW at 25 mph with rain. That’s rough, more of a kite day.

Tuesday August 25th has some size. Morning swell is 6.6ft from the SW at 16 seconds, energy at 1856, but the wind is cross from the SSW at 16 mph. Afternoon cleans up a little with wind easing to 12 mph, swell at 5.6ft. It’s okay but not clean.

Wednesday August 26th morning is small – 3.6ft, 13-second period, 431 energy. But the afternoon is a little beauty: swell drops to 3ft, period 12 seconds, but the wind goes glassy from the east at 3 mph. Dead calm. Perfect for a mellow session.

Thursday August 27th morning is lumpy – 3.6ft swell, 14-second period, 864 energy, but fresh north wind at 19 mph. Afternoon picks up to 5.2ft with a very long 19-second period, energy 1924, but still cross from the north at 12 mph. Lots of power but not glassy.

Friday August 28th afternoon is the first real winner. Morning is so-so, but by the afternoon the wind swings south at 6 mph, cross-offshore, and the swell is 4.6ft from the SW with 16-second period, 989 energy. Clean and lined up.

Saturday August 29th stays clean in the morning with light east wind cross-offshore, 3.6ft swell, 14-second period. Fun and small. Afternoon is clean too but the wind picks up from the SE at 16 mph.

The absolute standout is Sunday August 30th morning. Swell is 4.6ft from the SW with 16-second period, energy 1192, and the wind is from the east at 12 mph, offshore. Clean, moderate breeze, the reef will be groomed. This is the best session of the whole outlook for experienced surfers. The afternoon holds clean with 5.2ft swell and cross-offshore wind.

Monday August 31st afternoon goes glassy again – east wind at 3 mph, 4.6ft swell, 16-second period, 967 energy. Another clean window.

From Tuesday September 1st through to Friday September 4th, the swell drops right down – most days are 2.6ft to 3.9ft with shorter periods. A couple of clean moments: Thursday September 3rd morning is dead calm and glassy, 2.6ft swell. Friday September 4th morning has offshore ESE wind at 6 mph, 2.6ft swell.

Then Saturday September 5th morning gives a nice bump: 4.6ft from the WSW, 13-second period, 651 energy, with offshore wind from the SE at 12 mph. Clean and fun.

Sunday September 6th has 5.9ft swell in the morning, 15-second period, 1474 energy, but only a light cross wind from the NNE at 3 mph – just a ripple. Afternoon is clean with cross-offshore south wind.

Monday September 7th morning is choppy with cross-onshore WSW wind at 16 mph, 4.9ft swell. The afternoon cleans up with cross-offshore south wind at 16 mph, 5.2ft swell, 1260 energy. Not a classic but rideable.

So, the one to circle is Sunday August 30th morning – offshore wind, solid 4.6ft groundswell with long 16-second period, clean. The glassy windows on August 26th afternoon and August

Short Range Forecast

Light rain (total 5mm), mostly falling on Sun night. Very mild (max 19°C on Sun morning, min 11°C on Tue night). Winds decreasing (fresh winds from the SSW on Mon afternoon, light winds from the E by Tue night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Thu afternoon, min 11°C on Wed morning). Winds increasing (calm on Wed afternoon, fresh winds from the N by Thu morning).

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
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
1
1
0
0
1
1
2
3
1
2
1
0
2
2
2
3
3
2
1
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
17
1.3
SW
16
1.1
SW
15
1
SW
14
1.8
SW
14
1.6
SW
13
2
SW
16
1.7
SW
14
1.3
SW
14
1.1
SW
13
0.9
SW
12
0.8
SW
15
1.1
SW
14
1.6
SW
19
1.8
SW
17
1.5
SW
16
1.4
SW
16
1.2
SW
14
1.1
SW
14
1.1
SW
13
0.8
SW
12
Wave Graph
Metric surfscale
Energy kJ
1267
886
550
393
1249
821
1856
1155
656
431
256
301
459
1924
1882
1129
989
598
422
380
217
Wind (km/h)
25
NNE
20
N
15
NNE
15
W
40
SSW
20
SW
25
SSW
20
SSW
5
E
15
N
5
E
20
NE
30
N
20
N
20
NNE
15
NNE
10
S
15
ESE
10
E
25
SE
25
ESE
Wind State
cross
cross
cross
on
cross
cross
cross
cross
cross-off
cross
glassy
cross-off
cross
cross
cross
cross
cross-off
off
cross-off
cross-off
off
High Tide
11:50AM0.92m
1:02AM0.62m
11:40AM1.06m
00:18AM0.68m
11:50AM1.19m
00:13AM0.78m
12:06PM1.30m
00:22AM0.89m
12:24PM1.38m
00:36AM1.00m
12:43PM1.41m
00:53AM1.09m
1:03PM1.40m
1:13AM1.18m
Low Tide
7:09PM0.28m
5:03AM0.50m
6:40PM0.23m
5:15AM0.35m
6:35PM0.15m
5:35AM0.21m
6:40PM0.08m
5:57AM0.09m
6:51PM0.02m
6:21AM0.00m
7:04PM-0.02m
6:45AM-0.05m
7:18PM-0.05m
part cloud
cloud
light rain
cloud
rain showers
rain showers
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:05
7:05
7:03
7:03
7:01
7:01
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:15
6:15
6:15
6:16
6:16
6:17
6:19
 mm
2
1
2
Temp °C
19
19
16
15
15
14
14
14
13
16
19
19
21
24
23
22
23
21
21
20
19
Feels °C
13
14
13
13
8
9
9
10
11
13
16
15
15
19
18
19
20
17
17
15
14
  • 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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