Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 2 pm 30 Aug 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 30 Aug 2026:

  • Best quality surf: Thursday 3 Sep, 12AM (local time) - 6ft (1.8m), 15s period, SW swell with glassy winds.
  • Most powerful swell: Friday 4 Sep, 6PM (local time) - 8ft (2.4m), 14s period, SW swell with 2,457 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 12AM (local time) - 6ft (1.8m), 15s 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 Thursday (Sep 03) at 12AM. The primary swell is predicted to be 1.8m and 15s period with a secondary swell of 0.4m and 15s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Cunns in the next 16 days are 2.4m 14s and forecast to arrive on Friday (Sep 04) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Sep 06) at 9PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 3rd Sep)6ft (1.8m) 15s
Best Surf12AM (Thu 3rd Sep)6ft (1.8m) 15s
Most Powerful 6PM (Fri 4th Sep)8ft (2.4m) 14s

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


The Lowdown

Alright, surf's back on the map. We've been in a bit of a dry spell, but there's a proper run of swell heading our way, starting with a cleaner window before things get a little wild. Let’s break it down.

The first real opportunity kicks off Sunday afternoon. Cunns reef is the only break showing any life, and it's looking okay. We’ve got a solid 3.9ft of SW swell with a 19-second period, which is proper groundswell. The water’s sitting at 59.9° which is pretty much spot on for this time of year. The wind is light easterly, cross-off, which will keep the face tidy. It’s an inconsistent wave, so you might be waiting a bit between sets, but when they come, they’ll have some push. This is one of the better windows early on.

Monday morning sees the swell bump up to 5.2ft, still from the SW with that long 19-second period. The wind swings around to the NNE and picks up to 25 mph, but it’s still cross-off, keeping it reasonably clean. This is a decent option, though the tide might make things a little questionable. The energy is kicking up too, with combined energy hitting 1642, which is moderate to strong. Cunns (as it’s the only spot on the map) is where you want to be. It’s an advanced reef, so leave the foamies at home.

Then we hit a rough patch. The wind turns onshore and the quality drops right off. Tuesday and Wednesday are a write-off. The surf is there, 3.6ft to 5.6ft, but it’s lumpy and cross-onshore, making it a mess. Not worth the effort. The energy dips back down to the 600-1100 range, which tells you it’s all over the place.

Thursday looks like it might clean up a touch. The morning is still a bit onshore with a light northerly, but the afternoon is the one to watch. The wind swings to a light SSE cross-off, and we’ve got a clean 5.2ft of SW swell with a 13-second period. The energy is moderate, around 979. It’s not huge, but it should be fun and clean. This is a solid pick for a few waves after work.

Friday is a blowout. Strong winds, 25 mph, and the swell jumps up to 6.9ft. It’s messy and for the most part, not worth paddling out. The energy spikes to 3110, but it’s all noise with that wind. You’d be better off watching from the beach or looking at a kite. Saturday is similar, still big and lumpy with a cross-onshore breeze. The swell stays around 6.9ft, but the windows are few. A light cross-off might appear Saturday morning, but the wind is on it.

Sunday the 6th is a gem. The swell backs down a little to 5.2ft, but the wind goes offshore in the afternoon, ESE at 12 mph. That’s the good stuff. Clean, offshore, and a solid SW groundswell. The energy is moderate at 716, but the quality will be high. This is a standout for sure.

Now, the second week gets more interesting. There’s a big pulse of energy coming. The combined swell energy numbers are getting into the thousands, 2605, 3635, up to a massive 5951 on Wednesday the 9th. The swell is consistently 6.6ft to 8.2ft, and with those long periods (17-18s), it’s proper groundswell. But, it’s a lot of water moving. This is expert territory. The wind is mostly cross-off, light to moderate from the south and southeast, which will keep it clean, but it’s going to be heavy and powerful. Long period swells like this can be tricky at a reef; they can close out or break a bit straight. Cunns is a reef, so it might handle it better than a beach break, but it’s not for the faint of heart. Monday the 7th has a near gale, so that’s out, but Tuesday through Thursday looks like the main event. The standout is Wednesday the 9th afternoon, 8.2ft of SW swell, 16-second period, with only a gentle breeze. That’s big and clean, the kind of day that gets the heart pumping. But it’s a lot of water.

By Thursday the 10th, it’s still pumping with 6.6-6.9ft surf, but it’s a bit more manageable. The wind stays cross-off, and it should be excellent. Friday the

Short Range Forecast

Mostly dry. Warm (max 24°C on Mon afternoon, min 13°C on Tue night). Winds increasing (light winds from the E on Sun afternoon, fresh winds from the N by Mon night).

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Fri morning. Warm (max 22°C on Fri morning, min 13°C on Wed night). Winds increasing (calm on Wed night, near gales from the WSW by Fri night).

Sun
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
3
2
1
0
0
2
0
0
4
2
3
1
0
0
0
0
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
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
WSW
17
1.5
SW
16
1.2
SW
16
1.7
SW
14
1.8
SW
15
1.6
SW
14
1.6
SW
13
2
SW
16
1.7
SW
15
2.1
SW
14
2.1
SW
15
2.1
SW
14
2.1
SW
14
2
SW
14
Wave Graph
Metric surfscale
Energy kJ
1016
1050
1642
1453
909
611
1107
1123
692
1163
1308
975
933
1856
1220
1785
1810
1712
1680
1464
Wind (km/h)
15
E
20
E
25
NNE
15
N
25
N
35
N
30
WSW
25
SW
15
W
25
WSW
5
SW
10
N
10
SSE
25
NNE
40
N
40
W
45
WSW
25
SW
15
SW
15
ENE
Wind State
cross-off
cross-off
cross-off
cross
cross
cross-on
cross-on
cross
cross-on
cross-on
glassy
cross-on
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross
cross-off
High Tide
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
12:18PM0.85m
2:38AM0.77m
Low Tide
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
7:58AM0.69m
7:31PM0.13m
clear
clear
clear
clear
clear
cloud
clear
part cloud
part cloud
clear
part cloud
clear
part cloud
cloud
light rain
rain showers
part cloud
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:56
6:54
6:52
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:20
6:20
6:21
6:22
6:22
6:22
 mm
1
1
Temp °C
22
20
22
24
24
24
18
14
14
14
14
19
19
19
22
18
15
13
13
12
Feels °C
18
15
17
19
19
17
13
10
10
9
11
18
16
16
18
11
5
7
9
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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