Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 2 am 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
15.1° 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 15 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 9PM (local time) - 4.5ft (1.3m), 16s period, SW swell with offshore winds.
  • Most powerful swell: Friday 21 Aug, 9AM (local time) - 7ft (2.1m), 17s period, SW swell with 2,471 kJ wave energy.
  • Next surfable swell (1★+): Sunday 16 Aug, 6AM (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 Sunday (Aug 16) at 6AM. The primary swell is predicted to be 1.3m 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 2.1m 17s and forecast to arrive on Friday (Aug 21) at 9AM. 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 Tuesday (Aug 18) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 16th Aug)4.5ft (1.3m) 14s
Best Surf 9PM (Thu 20th Aug)4.5ft (1.3m) 16s
Most Powerful 9AM (Fri 21st Aug)7ft (2.1m) 17s

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


The Lowdown

Alright, cunns, let’s get into it. The forecast window opens up with a bit of a wait, which is never fun, but there's something to work with. The first call is for Sunday the 16th. It’s a bit of a slow build, but there are some clean windows hiding in there if you’re patient.

Sunday morning, the 16th, is your first real chance. We’re looking at chest-high stuff, around 4ft of southwest swell, with a solid 14-second period. The wind is light off the land, out of the ESE at 6 mph, which is making it glassy. Water temp is sitting at 59°F, which is close to average for this time of year. The energy is moderate, coming in at 668 units. It’s going to be a bit inconsistent, so pick your moments.

Monday afternoon, the 17th, is another one that’s worth circling. The swell drops a touch to 4ft, but the period jumps up to 16 seconds. That's a proper groundswell. The wind stays light out of the ESE, and the energy bumps up to 782. It’s cleaner than the morning, so get out there if you can.

We hit a bit of a lull on the 18th and 19th. The wind switches onshore and messes things up with lumpy chop. Not worth the paddle, to be honest.

Thursday the 20th looks much better. Both the morning and afternoon sessions are showing clean, glassy conditions. Swell holds around 4ft with that 16-second period, and the energy is up around 628 to 682. Gentle cross-off winds will keep the face smooth. This is a solid day.

Now, the standout of the whole window looks like Friday the 21st. There’s a pulse of energy coming in, with the combined swell energy jumping to a strong 4331. The swell is set to peak at 7ft out of the southwest with a 17-second period. This is a proper swell. But the wind is the problem. A cross-onshore WSW breeze at 12 mph is going to wrap it up and make it choppy, and the score reflects that it’s not going to be clean. It’s for the experienced crew only, and even then, it’ll be a battle. By the afternoon, it drops to 6ft, but the wind kicks up to 22 mph, so that’s a no-go.

Saturday the 22nd is interesting. The swell eases to 5ft in the morning but still has plenty of push at 1814 energy. The wind swings cross-off from the SSE at 9 mph, so it looks like it cleans up nicely. The afternoon even sees it bump to 6ft with 1855 energy. This is another window for the more experienced surfer, as that size starts to get challenging for beginners.

There’s a bit of a drop-off on the 23rd, with the wind turning onshore again. Not great.

Monday the 24th brings back the clean lines. The swell settles to a fun 5ft with a 15-second period. The ENE cross-off at 9 mph will keep it glassy. The energy is moderate at 894, and it looks like a good, mellow day out.

The 25th is a bit of a tease. The swell is there, but the winds are stronger, making it less appealing.

Then we get a stormy blip on Wednesday the 26th. The wind is howling at 28 mph and the surf is a mess. The swell period is long, but that’s moot. Kite surfers might be having a ball, but for us, it’s a day off.

The real late-stage highlight is Thursday the 27th afternoon. The swell is solid at 6ft with 2013 energy, and the wind is light offshore from the south at 9 mph. This looks excellent for experienced surfers. Clean, powerful waves, and a 17-second period. This is another one for the top end of the list, though not quite the all-around winner due to the size.

The last few days, from the 28th to the 31st, fade out with smaller swells and increasingly onshore winds. There’s not much to get excited about there.

So, if I’m calling it, the best balance of size, clean conditions, and energy is Saturday the 22nd. It’s got the size, the period, and the clean cross-off wind. The Thursday the 27th afternoon is a close second, but it’s a touch bigger and might not be for everyone. The 20th is the pick for a more relaxed, clean session.

Take it easy out there.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Sun afternoon. Warm (max 23°C on Tue afternoon, min 13°C on Tue night). Winds increasing (light winds from the ESE on Sun morning, strong winds from the N by Tue morning).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 15°C on Thu morning, min 13°C on Wed morning). Winds increasing (light winds from the ESE on Thu morning, fresh winds from the SSW by Fri afternoon).

Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
2
2
3
2
0
0
0
0
0
3
3
3
4
2
1
3
3
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SW
14
1.2
SW
14
1.1
SW
14
0.8
SW
16
1.1
SW
16
0.8
SW
19
1.1
SW
18
0.9
SW
17
1.2
SW
16
1
SW
15
0.9
SW
15
1.1
SW
14
1.1
SW
16
1.1
SW
16
1.4
SW
15
2.1
SW
17
1.8
SW
16
2
SW
16
1.6
SW
14
1.9
SW
16
1.8
SW
16
Wave Graph
Metric surfscale
Energy kJ
668
590
428
314
619
520
679
482
776
447
370
536
628
636
915
2471
1761
1919
943
1855
1494
Wind (km/h)
10
ESE
20
SE
15
E
15
ENE
10
ESE
20
NE
35
NNE
25
NNW
20
W
15
WNW
15
SW
10
SSE
15
E
15
SSE
10
E
20
WSW
35
SSW
20
S
15
SSE
15
S
10
E
Wind State
off
cross-off
off
cross-off
off
cross-off
cross
cross-on
cross-on
on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-on
cross
cross-off
cross-off
cross-off
cross-off
High Tide
1:39PM1.18m
1:58AM1.12m
1:49PM1.13m
2:19AM1.13m
1:59PM1.07m
2:40AM1.10m
2:07PM0.99m
3:00AM1.03m
2:07PM0.91m
3:19AM0.92m
1:48PM0.84m
3:31AM0.80m
12:48PM0.83m
2:55AM0.66m
Low Tide
7:51PM0.03m
7:53AM0.16m
8:02PM0.01m
8:12AM0.23m
8:15PM0.01m
8:30AM0.33m
8:28PM0.06m
8:43AM0.44m
8:36PM0.13m
8:44AM0.56m
8:33PM0.21m
7:56AM0.66m
8:02PM0.28m
part cloud
rain showers
part cloud
clear
cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:13
7:11
7:11
7:09
7:09
7:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:10
6:12
6:12
6:13
6:14
6:14
 mm
2
Temp °C
15
15
15
15
17
17
20
23
14
14
14
14
15
15
15
15
14
13
14
13
12
Feels °C
12
11
11
12
14
13
12
18
11
11
11
11
13
12
12
11
7
7
10
9
8
  • 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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