Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 2 am 19 Jul 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
16.0° C
0.3° 

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


Cunns surf forecast from 18 Jul 2026:

  • Best quality surf: Friday 24 Jul, 12AM (local time) - 6ft (1.8m), 15s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 23 Jul, 6AM (local time) - 8ft (2.5m), 14s period, SSW swell with 2,799 kJ wave energy.
  • Next surfable swell (1★+): Monday 20 Jul, 6PM (local time) - 4.5ft (1.3m), 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 Monday (Jul 20) at 6PM. The primary swell is predicted to be 1.3m and 14s 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 2.5m 14s and forecast to arrive on Thursday (Jul 23) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Tuesday (Jul 21) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Mon 20th Jul)4.5ft (1.3m) 14s
Best Surf12AM (Fri 24th Jul)6ft (1.8m) 15s
Most Powerful 6AM (Thu 23rd Jul)8ft (2.5m) 14s

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


The Lowdown

Alright, let’s get into it. I’m lookin’ at the only game in town for this 16-day stretch: Cunns, a reef setup that’s exposed to the SW and needs a specific wind to really shine. The water’s sittin’ at 61°F right now, which is about normal for this time of year, nothin’ to write home about.

The first few days are a write-off, honestly. We’ve got a bit of swell around, but the wind is just killin’ it. Sunday the 19th has a tiny 1ft to 3ft SW swell, but it’s cross-shore and cross-on, choppy as hell. The combined energy is weak at 238 to 455, and it’s labelled as poor surf. Same story Monday the 20th – a bit more size, 4ft to 4ft from the SW, but still cross-on and choppy. The energy is pickin’ up to 575 (moderate), but the wind’s just not givin’ us a break. Tuesday the 21st and Wednesday the 22nd are more of the same: messy, choppy, and not worth paddlin’ out. The energy does get up to 746 on Wednesday afternoon, but it’s cross-shore and lumpy.

Then we get a glimmer. Thursday the 23rd morning sees a 7ft SW swell, with a 14-second period and a cross-offshore breeze. The combined energy is cranked up to 1709 (strong), and the conditions are clean. That’s a solid look for advanced surfers, but it’s still pretty big. The afternoon holds at 7ft with a 16-second period and clean conditions – energy is 1929. This is the first real standout. That long period (over 15 seconds) means it’s a groundswell, and at a reef break like Cunns, that’s gonna produce some proper, lined-up waves. Paddlin’ out could be a bit easier between sets, too.

But the absolute best of the whole forecast is Friday the 24th. The morning delivers 5ft of SW swell, 14-second period, and *glassy* conditions. The energy is 1077 (strong) and the wave comment says it’s excellent for experienced surfers. This is the one. A clean, glassy morning at a reef break with a solid SW groundswell – that’s as good as it gets. The wind is dead calm. This is the top pick. The afternoon gets a bit more cross-shore and drops in quality.

After that, it fades. Saturday the 25th through the end of the month is a slow decline. The wind swings back to cross-on and choppy, the swell drops to 4ft or less, and the energy falls back to weak or moderate. There’s a stretch from the 26th of July right through to the 31st where it’s just poor surf, day after day. The only break in that is a marginal session on Monday the 27th afternoon with a tiny 2ft swell but a 16-second period – clean, but tiny.

Then we hit August. The 1st of August morning is a mess with 28 mph cross-on wind and a 4ft swell – just a disaster. But the afternoon of the 1st pumps up to 8ft from the WSW with a 18-second period. The energy is massive at 3536 (very strong), but the wind is a fresh cross-on, lumpy and messy. That’s a lot of power, but it’s blown out. The 2nd and 3rd see more big swell – 10ft on the 3rd morning with 18-second period, energy 5529 – but it’s all cross-on or onshore wind. That’s big, angry, and messy. For experts only, and even then, it’s not clean.

So, to wrap it up: Thursday the 23rd is good, Friday the 24th morning is the standout – glassy, clean, solid SW groundswell at a reef. Grab it, because after that, it’s a long stretch of choppy, blown-out days until we get some big, messy power in early August that’s more for the adrenaline junkies than a smooth session. Cunns is inconsistent, so this window is worth the wait.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Sun afternoon, min 13°C on Sun morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 14°C on Wed morning, min 12°C on Wed night). Winds decreasing (fresh winds from the SSW on Wed morning, calm by Fri morning).

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
2
2
0
1
1
1
0
3
3
3
4
4
2
2
2
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)
0.4
SW
19
0.8
SW
18
1.1
SW
16
1.1
SW
15
1.2
SW
15
1.3
SW
14
1.1
SW
13
1.1
SW
13
0.9
SW
12
1.2
SW
14
1.5
SW
13
2.3
SSW
14
2.1
SW
14
2
SW
16
1.8
SW
15
1.6
SW
14
1.5
SW
14
1.3
SW
14
1.4
SW
13
1.4
SW
13
1.3
SW
12
Wave Graph
Metric surfscale
Energy kJ
133
370
587
566
623
604
437
357
240
534
746
2060
1657
1929
1540
1077
886
604
690
669
494
Wind (km/h)
25
N
20
N
20
NNE
20
N
10
NNW
15
NNE
15
N
10
W
15
SW
20
SSW
25
SSW
30
S
20
S
15
S
15
SE
0
ENE
15
SW
10
SW
10
WSW
20
WSW
15
SW
Wind State
cross
cross-on
cross
cross-on
cross-on
cross-off
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
glassy
cross
cross
cross-on
cross-on
cross-on
High Tide
2:16PM1.10m
2:41AM0.91m
2:26PM1.04m
3:13AM0.90m
2:35PM0.96m
3:48AM0.86m
2:35PM0.87m
4:33AM0.79m
2:02PM0.79m
11:56AM0.81m
11:20AM0.94m
00:21AM0.53m
Low Tide
8:40PM0.17m
8:22AM0.31m
8:56PM0.16m
8:45AM0.42m
9:13PM0.18m
9:06AM0.53m
9:29PM0.23m
9:12AM0.65m
9:34PM0.31m
8:49PM0.38m
7:15PM0.37m
clear
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
clear
rain showers
clear
rain showers
cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:35
7:35
7:33
7:33
7:33
7:33
7:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:52
5:53
5:54
5:54
5:55
5:55
 mm
1
1
Temp °C
17
19
19
17
19
18
17
18
17
14
14
13
13
13
13
13
13
13
13
13
14
Feels °C
11
13
14
12
16
14
13
15
14
10
8
7
8
9
8
10
9
9
10
9
11
  • 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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