Cunns Surf Break

Lat Long: 32.10° S 132.98° E

Cunns Surf Forecast and Surf Report

Issued: 8 pm 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cunns sea temperature is
15.3° 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 21 Aug 2026:

  • Best quality surf: Saturday 22 Aug, 3AM (local time) - 5ft (1.6m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 12PM (local time) - 7.5ft (2.3m), 19s period, SW swell with 3,939 kJ wave energy.
  • Next surfable swell (1★+): Saturday 22 Aug, 3AM (local time) - 5ft (1.6m), 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 Saturday (Aug 22) at 3AM. The primary swell is predicted to be 1.6m 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 2.3m 19s and forecast to arrive on Thursday (Aug 27) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Aug 24) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sat 22nd Aug)5ft (1.6m) 16s
Best Surf 3AM (Sat 22nd Aug)5ft (1.6m) 16s
Most Powerful12PM (Thu 27th Aug)7.5ft (2.3m) 19s

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


The Lowdown

Alright, this is Rusty checkin' in with a look at what's on offer at Cunns.

Alright, so the 16-day window starts with a bit of promise, but you're gonna have to pick your moments. We’ve got a solid run of SW groundswell pushing through, with some pretty hefty periods at times. The main game here is a reef break that needs the right conditions to shine. It's an exposed spot, so it’ll pick up anything that's moving, but we're really looking for that clean, cross-off wind.

First up, Saturday, August 22 is your early standout. It’s a cracker. We’re looking at clean 5 ft swell from the SW with a long 15 second period – proper groundswell. The wind is a light 10 km/h cross-off from the NE and the energy is pumping, reading a solid 1302. This is expert territory though, as it's over 5 ft and this break is for advanced surfers. It's inconsistent here too, so you'll be waiting for the sets, but when they come, they'll be well-shaped.

After that, the week gets messy. Sunday, August 23, the wind swings onshore and it's a write-off. Monday and Tuesday are no good either, with onshores and lumpy conditions for the most part, despite a bit of size. There's a spike on Tuesday morning, August 25, with 7 ft, but the cross wind chops it up.

The next real moment of clarity is on Monday, August 31. A week and a half out, but this one's worth circling. A 5 ft SW swell, 16 second period, and clean offshore wind from the SE at 20 km/h. The energy is strong at 1314. Expect clean faces for the experienced crew. Crowds are a factor out here sometimes, so be ready for company.

Into the first week of September, there's a glimmer on Friday, September 4. The morning is a real treat – glassy conditions, with a 5 ft SW swell running at 14 seconds. The energy is moderate around 886, but that glassy surface will make it feel like a million bucks. It's one of those rare, perfect early mornings.

The rest of the second week looks pretty average. Winds get messy again from the 3rd onwards, with onshores and cross-shore chop ruining the fun. The swell hangs around, but without the right wind, this reef break won't give you much.

So to sum it up: if you're an expert looking for a proper session, Saturday the 22nd is your best early call, and Monday the 31st is a solid long-range prospect. For the rest, it's a case of being on the ball and hoping the wind plays nice.

This is Rusty, signing off.

Short Range Forecast

Moderate rain (total 18mm), heaviest on Sun night. Warm (max 21°C on Sun afternoon, min 13°C on Fri night). Winds increasing (calm on Sat morning, fresh winds from the SW by Mon afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 22°C on Thu morning, min 11°C on Tue night). Winds decreasing (fresh winds from the SW on Mon night, calm by Tue night).

Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
4
3
2
1
2
0
0
0
1
2
3
1
1
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
SW
16
1.6
SW
15
1.5
SW
15
1.6
SW
15
1.5
SW
17
1.3
SW
16
1.1
SW
15
0.9
SW
14
1
SW
14
1.9
SW
13
2.1
SW
15
1.8
SW
14
1.5
SW
14
1.1
SW
13
1
SW
12
1
SW
15
0.9
SW
20
2.4
SW
18
2.2
SW
17
Wave Graph
Metric surfscale
Energy kJ
1402
1216
936
1011
1267
886
550
341
382
1164
2102
1363
790
424
291
410
653
3713
2758
Wind (km/h)
15
SSE
10
NE
15
SSE
20
ENE
25
NNE
20
NNE
25
E
25
NW
30
SW
35
SW
25
SSW
20
SSW
5
SSE
15
N
5
N
20
NNE
30
N
30
WSW
35
S
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
on
cross-on
cross
cross
cross
glassy
cross
cross-on
cross
cross-on
cross-on
cross-off
High Tide
3:31AM0.80m
12:48PM0.83m
2:55AM0.66m
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
Low Tide
7:56AM0.66m
8:02PM0.28m
5:37AM0.64m
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
part cloud
clear
clear
clear
part cloud
cloud
heavy rain
light rain
rain showers
part cloud
part cloud
clear
clear
clear
clear
clear
clear
cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
7:05
7:05
7:03
7:03
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:14
6:14
6:15
6:15
6:15
6:16
6:16
 mm
12
5
1
1
Temp °C
14
16
16
15
19
21
15
16
15
14
14
14
13
16
19
19
22
18
14
Feels °C
11
14
12
11
13
15
12
13
10
8
9
10
11
13
16
14
17
12
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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