Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 8 am 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
15.7°C
0.2° 

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


Cunns surf forecast from 2 Sep 2026:

  • Best quality surf: Thursday 3 Sep, 3AM (local time) - 5.5ft (1.7m), 14s period, SW swell with glassy winds.
  • Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 8ft (2.5m), 18s period, SSW swell with 4,684 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 3AM (local time) - 5.5ft (1.7m), 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 Thursday (Sep 03) at 3AM. The primary swell is predicted to be 1.7m 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 2.5m 18s and forecast to arrive on Wednesday (Sep 09) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Monday (Sep 07) at 12AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 3rd Sep)5.5ft (1.7m) 14s
Best Surf 3AM (Thu 3rd Sep)5.5ft (1.7m) 14s
Most Powerful 9AM (Wed 9th Sep)8ft (2.5m) 18s

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


The Lowdown

Alright folks, Rusty here with a look at what we've got cookin' for the next couple of weeks. We're only looking at one spot, Cunns, and it's a real reef set-up that doesn't break all that often. So, when it does, you better pay attention.

First up, Wednesday morning the 2nd of September sees a 4ft south-west groundswell, with a very long 16-second period, rolling in. The water's sitting at 60°, which is about average for the time of year. The wind is a light cross-onshore from the west, so it's a bit grotty with small ripples. The combined energy of all swells directed here is moderate (832). It's not a total write-off, but it's a “marginal surf forecast or questionable tide conditions” kind of start. The afternoon gets worse – the swell bumps up to 7ft from the SW, but a moderate WSW breeze kicks up a choppy mess. That's a no-go.

Thursday the 3rd of September is where things start to get interesting. The morning has a clean 6ft SW swell with 14-second period and a light offshore north-west wind. That's a proper window. The combined energy is moderate (1123). But the real standout is Thursday afternoon. You've got a clean 6ft SW swell, 14-second period, and a gentle cross-offshore breeze from the south. That's the recipe for clean, lined-up reef waves. The combined energy is moderate (1388). It's described as "excellent surf conditions for experienced surfers" – and with it being over 5ft, it's a bit much for beginners. This is the best on offer in the near term.

Friday the 4th and Saturday the 5th are a write-off. Strong winds from the north-west and then the south-west, with lumpy, choppy conditions. Swell gets up to 10ft on Saturday morning, but with a fresh cross-onshore, it's a mess. The combined energy spikes to 4736 (strong) on Saturday morning, but it's wasted. This is more of a kite-surfing setup than a paddle-surfing one.

Sunday the 6th of September marks a turn. The morning has a clean 6ft SW swell with a moderate cross-offshore breeze from the ENE. Then Sunday afternoon is a real gem: 4ft SW swell, 14-second period, and a moderate offshore wind from the south-east. The combined energy is 716 (weak to moderate), but the conditions are clean. It's a smaller, friendlier wave.

The first week of September is a mixed bag, but Thursday afternoon and Sunday afternoon are your best bets for clean, quality reef waves. The wind is either offshore or cross-offshore, the swell is a solid size, and the consistency is there for the times it's breaking.

Now, moving into the second week, things get more promising but less certain. Monday the 7th stays clean with offshore winds, but the swell drops to 2-4ft. Tuesday the 8th brings a bigger 7ft SW swell with a very long 17-second period, and fresh offshore winds. The combined energy is (2759). That's a powerful, clean swell, but for a reef break, that long period could make it a bit straight. It's a good pick for experienced surfers.

Wednesday the 9th of September is a monster. 8ft SSW swell with an 18-second period and a strong offshore breeze from the east-south-east. The combined energy hits 4684 (strong). That's a serious, powerful groundswell. It's a standout for the big-wave crew, but it's only for experts. The wind is strong enough to make paddling out a battle.

The rest of the second week, from the 10th to the 15th, is a mix of clean windows and choppy days. The swell hangs around 3ft to 6ft, mostly with cross-offshore winds, keeping it clean. The combined energy stays moderate (335 to 2121). There are no perfect days, but plenty of “marginal” or “good” sessions.

Then, we get a real standout for the end of the run. Wednesday the 16th of September. Morning sees a clean 7ft SW swell, 16-second period, with a gentle cross-offshore breeze. The combined energy is 2185 (moderate). It's described as "excellent surf conditions for experienced surfers". Thursday the 17th of September keeps it going with a 8ft SW swell in the morning, then a 7ft SW swell in the afternoon, both with clean conditions. The afternoon has a combined energy of 3020 (strong). This is the best of the longer-range stuff. It's a powerful, clean swell that will have the reef working perfectly.

So, to boil it down: the best of the early week is Thursday afternoon the 3rd and Sunday afternoon the 6th. The best of the long-range is Wednesday the 16th and Thursday the 17th. Cunns is inconsistent, so when it's on, it's on. Keep an eye on the forecasts, because they can change. This place doesn't stay flat for long.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Fri afternoon. Warm (max 25°C on Fri morning, min 14°C on Wed morning). Winds increasing (calm on Wed night, fresh winds from the W by Fri afternoon).

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Sun night. Warm (max 21°C on Sun afternoon, min 11°C on Sat night). Winds increasing (light winds from the ESE on Sat night, fresh winds from the ESE by Sun night).

Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
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
0
3
2
4
3
0
0
0
0
3
4
2
3
1
1
2
3
3
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SW
16
2.1
SW
15
1.7
SW
14
1.7
SW
14
1.8
SW
14
2.1
SW
15
2.1
SW
15
2.4
SW
15
2.1
SW
15
3
SW
14
2.3
SW
14
2.1
SW
14
1.7
SW
14
1.3
SW
14
0.9
SW
13
0.7
SW
13
1.1
SW
13
1.9
SW
18
2
SW
17
2.2
SSW
16
2.5
SSW
16
Wave Graph
Metric surfscale
Energy kJ
783
1915
1171
1123
1336
1857
2093
2620
1994
2887
1912
1729
1139
716
295
173
363
2397
2320
2631
3524
Wind (km/h)
10
W
25
WSW
5
WSW
10
NW
15
S
20
ENE
35
NNW
35
W
25
WSW
20
SW
15
SW
15
E
25
ENE
25
SE
35
ESE
30
ESE
35
ESE
30
ESE
30
ESE
40
SE
40
SE
Wind State
cross-on
cross-on
cross-on
on
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
off
off
off
off
off
off
cross-off
off
High Tide
2:01PM0.98m
2:38AM1.18m
1:55PM0.86m
2:56AM1.07m
1:20PM0.80m
3:04AM0.92m
12:18PM0.85m
2:38AM0.77m
11:43AM0.99m
1:29AM0.68m
11:44AM1.13m
00:44AM0.70m
11:57AM1.23m
00:28AM0.79m
Low Tide
8:04PM0.03m
8:42AM0.36m
8:05PM0.07m
8:45AM0.54m
7:54PM0.11m
7:58AM0.69m
7:31PM0.13m
6:09AM0.69m
7:06PM0.13m
5:24AM0.54m
6:51PM0.12m
5:29AM0.37m
6:45PM0.11m
clear
clear
clear
clear
clear
part cloud
light rain
rain showers
clear
part cloud
clear
clear
part cloud
cloud
light rain
light rain
light rain
light rain
rain showers
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:52
6:52
6:50
6:48
6:48
6:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:21
6:22
6:22
6:22
6:23
6:23
6:24
 mm
2
3
2
1
2
3
1
Temp °C
14
14
14
17
17
19
25
19
16
14
14
12
20
21
14
15
16
15
17
16
15
Feels °C
11
9
11
14
14
15
20
13
10
10
11
9
16
15
11
9
11
9
11
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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