Cactus surfForecast / SA – Nullarbor / Australia

information circle12 Day Weather and Surf, issued 3 pm Monday 15 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
20.2° C
(Which is 1.9°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 Tuesday (Dec 16) at 7AM. The primary swell is predicted to be 0.9m and 11s 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 1.4m 13s and forecast to arrive on Friday (Dec 19) 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 1.2m 6s period and expected on Tuesday (Dec 16) at 1AM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Tue 16th Dec)3ft (0.9m) 11s
Best Surf 7AM (Tue 16th Dec)3ft (0.9m) 11s
Most Powerful 4PM (Fri 19th Dec)4.5ft (1.4m) 13s

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 38°C on Thu morning, min 17°C on Mon afternoon). Winds decreasing (fresh winds from the SE on Mon afternoon, light winds from the NE by Wed morning).

Days 3-6 Weather Summary Mostly dry. Warm (max 31°C on Thu afternoon, min 15°C on Sat night). Winds increasing (light winds from the SE on Thu night, fresh winds from the SSW by Sat afternoon).

Mon
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
2
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.3
SW
1.1
SW
1.2
SSW
0.9
SSW
0.7
SW
0.4
SW
0.6
S
0.5
SW
0.5
SW
0.8
SSW
0.6
SW
0.6
SW
1.4
SSW
1.2
SSW
1.1
SSW
1.2
SSW
1.4
SSW
1
SSW
0.9
SSW
0.9
SW
0.9
SW
Period(s) (?)121211111015101414141413137896881310
Wave
Graph
(?)Metric surfscale
Energy kJ (?)502319337215110596910310228011810860413516322715014398286180
Wind
(km/h)
35
SSE
25
ESE
15
ENE
30
SSE
20
E
20
NNE
20
SSE
20
E
20
N
30
S
10
SE
30
SSE
30
S
25
SSE
20
S
30
SSW
30
SSW
25
SSW
30
SSW
20
S
20
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
offcrosscross-
off
cross-
off
crosscross-
off
cross-
off
crosscross-
off
crosscrosscrosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscross
High Tide
/ height (m)
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
1:40AM
1.41
1:41PM
0.80
2:06AM
1.43
Low Tide
/ height (m)
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
6:53PM
0.07
8:19AM
0.14
7:19PM
0.03
8:44AM
0.14
Mon
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Sunrise--6:26--6:26--6:26--6:26--6:26--6:28--6:28
Sunset8:38--8:39--8:40--8:40--8:42--8:42--8:43--
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C171928282635353038312620201717171716171617
Feels °C (?)111424212131292535242416161214121211111213
  • 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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