Cunns surfForecast / SA – Nullarbor / Australia

information circle12 Day Weather and Surf, issued 3 pm Saturday 13 Dec 2025 ACDT
Forecast update in hr  min  s Forecast update imminent
Cunns surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cunns sea temperature is
20.5° C
(Which is 2.2°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Cunns this week:

The surf forecast for Cunns over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 14) at 7AM. The primary swell is predicted to be 0.8m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Cunns in the next 12 days are 1.8m 14s and forecast to arrive on Monday (Dec 15) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Monday (Dec 15) at 10PM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sun 14th Dec)2.5ft (0.8m) 12s
Best Surf 7AM (Tue 16th Dec)3ft (0.9m) 11s
Most Powerful 4AM (Mon 15th Dec)6ft (1.8m) 14s

Table - best surf conditions forecast for Cunns over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 28°C on Tue morning, min 14°C on Sun night). Winds decreasing (fresh winds from the SE on Mon afternoon, light winds from the ESE by Tue morning).

Days 3-6 Weather Summary Mostly dry. Warm (max 36°C on Thu morning, min 16°C on Thu night). Winds increasing (calm on Wed morning, fresh winds from the SSE by Thu night).

Sat
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
2
2
1
1
1
0
1
0
0
0
0
0
0
0
0
0
2
Swell
Height Map
Wave Height (m) & direction (?)
0.8
SW
0.8
SW
0.8
SW
0.7
SSW
1.7
SSW
1.6
SW
1.3
SW
1.1
SW
1.1
SSW
1.1
SSW
0.7
SW
0.5
SSW
0.7
S
0.5
SW
0.5
SW
0.7
SSW
0.6
SW
0.6
SW
1.4
S
1.3
S
1
S
Period(s) (?)131212151513121211111011101414141413788
Wave
Graph
(?)Metric surfscale
Energy kJ (?)24618417220712978545023192853141126494102100183119104198234133
Wind
(km/h)
30
S
20
S
20
S
30
S
25
SE
30
SE
30
SSE
25
ESE
20
ENE
30
SSE
20
E
25
NNE
25
SSE
25
E
20
NNW
25
SSW
40
SSE
35
SSE
35
SSE
35
SE
25
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
offcross-
off
cross-
off
offcrosscross-
off
cross-
off
cross-
on
crosscross-
off
cross-
off
cross-
off
cross-
off
off
High Tide
/ height (m)
1:57AM
0.78
12:04AM
0.85
10:52AM
0.57
11:53PM
0.98
11:36AM
0.63
12:06AM
1.11
12:06PM
0.68
12:27AM
1.22
12:32PM
0.72
12:51AM
1.30
12:55PM
0.75
1:15AM
1.37
1:18PM
0.78
Low Tide
/ height (m)
3:40PM
0.46
7:16AM
0.52
4:31PM
0.38
6:46AM
0.42
5:04PM
0.31
6:55AM
0.32
5:34PM
0.24
7:14AM
0.24
6:01PM
0.17
7:34AM
0.18
6:27PM
0.12
7:56AM
0.15
Sat
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Sunrise--6:24--6:24--6:26--6:26--6:26--6:26--6:26
Sunset8:37--8:38--8:38--8:39--8:40--8:40--8:42--
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
Rain (mm)
---------------------
Temp. °C181618181618171828262535342936301717161520
Feels °C (?)1313141412121113251919332723302412119915
  • 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 12 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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