Cactus surfForecast / SA – Nullarbor / Australia

information circle12 Day Weather and Surf, issued 9 pm Saturday 20 Dec 2025 ACDT
Forecast update in hr  min  s Forecast update imminent
Cactus surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cactus sea temperature is
22.3° C
(Which is 3.8°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Cactus this week:

The surf forecast for Cactus over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 26) at 10AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.7m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Cactus in the next 12 days are 1.9m 17s and forecast to arrive on Tuesday (Dec 23) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Thursday (Dec 25) at 10AM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+)10AM (Fri 26th Dec)3ft (0.9m) 12s
Best Surf10AM (Fri 26th Dec)3ft (0.9m) 12s
Most Powerful 4PM (Tue 23rd Dec)6ft (1.9m) 17s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 20°C on Sat night, min 16°C on Tue afternoon). Winds decreasing (strong winds from the WSW on Sat night, light winds from the S by Sun night).

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Fri morning, min 15°C on Tue night). Winds decreasing (fresh winds from the SE on Wed night, light winds from the SE by Fri morning).

Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sat
27
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
1
1
2
2
0
1
0
0
1
2
0
1
1
0
Swell
Height Map
Wave Height (m) & direction (?)
1
SW
2.1
WSW
2.2
SW
1.7
SW
1.3
SW
1.2
SW
0.6
SW
1.4
SW
1.9
SW
1.8
SW
1.7
SW
1.4
SW
1.2
SW
1.1
SW
1.1
SW
1.1
SW
0.9
SW
0.9
SSW
0.6
SW
0.8
SW
0.9
SW
Period(s) (?)9810121111131617161514131313131212171616
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1555328698004373191341017214015321254802511431424352252255181357416
Wind
(km/h)
35
WSW
40
WSW
35
SSW
25
S
15
SSW
25
SSW
20
S
25
SSE
30
S
30
SE
25
SE
35
SSE
35
SE
30
SE
30
SSE
35
ESE
25
E
35
SSE
15
ESE
20
NNE
30
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononcross-
on
cross-
on
cross-
on
cross-
on
crosscrosscrosscross-
off
cross-
off
crosscross-
off
cross-
off
crosscross-
off
offcrosscross-
off
cross-
off
cross
High Tide
/ height (m)
1:40AM
1.41
1:41PM
0.80
2:06AM
1.43
2:05PM
0.81
2:33AM
1.42
2:32PM
0.80
3:01AM
1.39
3:02PM
0.78
3:30AM
1.31
3:35PM
0.75
4:00AM
1.19
4:14PM
0.71
4:28AM
1.02
5:10PM
0.68
Low Tide
/ height (m)
8:19AM
0.14
7:19PM
0.03
8:44AM
0.14
7:45PM
0.02
9:11AM
0.15
8:13PM
0.04
9:40AM
0.18
8:41PM
0.09
10:12AM
0.22
9:11PM
0.19
10:45AM
0.28
9:43PM
0.32
11:21AM
0.36
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sat
27
Sunrise-6:28--6:28--6:28--6:28--6:30--6:30--6:31-
Sunset--8:43--8:43--8:44--8:44--8:45--8:45--8:45
part cloud
clear
cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
Rain (mm)
---------------------
Temp. °C201818171717171818161717161919192726233433
Feels °C (?)171011111413131414121211101314122319173226
  • 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 Cactus Surf forecast

The above surf forecast table for Cactus provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Cactus can be found by selecting the local surf guide option on the grey menu. Our Cactus 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 (Cactus) 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 Cactus 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 Cactus, camping, hotels and holiday cottages in Nullarbor, consider staying in Thevenard which is 63 km (39 miles) away.

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