Cactus Surf Break

Lat Long: 32.09° S 132.98° E

Cactus Surf Forecast and Surf Report

Issued: 2 pm 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cactus sea temperature is
15.1° C
0.5° 

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


Cactus surf forecast from 19 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 9PM (local time) - 5ft (1.5m), 15s period, SW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 25 Aug, 6AM (local time) - 6ft (1.8m), 16s period, SW swell with 1,697 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 9PM (local time) - 5ft (1.5m), 15s period with SW swell.

Best Forecast Surf Conditions for Cactus this week:

The surf forecast for Cactus over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 9PM. The primary swell is predicted to be 1.5m and 15s period with a secondary swell of 0.8m and 18s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Cactus in the next 16 days are 1.8m 16s and forecast to arrive on Tuesday (Aug 25) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Aug 23) at 12AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Wed 19th Aug)5ft (1.5m) 15s
Best Surf 9PM (Wed 19th Aug)5ft (1.5m) 15s
Most Powerful 6AM (Tue 25th Aug)6ft (1.8m) 16s

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


The Lowdown

Alright, let’s talk about Cactus, a reef setup that’s got a solid window coming up. The water temperature is 59°, which is pretty much bang on average for this time of year, so nothing unusual there.

The next few days are a bit of a mixed bag. Wednesday afternoon is a write-off – cross-on wind, choppy, and the combined swell energy is 1142, which is moderate, but it's messy. Not worth paddling out.

The first real standout is Thursday morning, 20th August. Glass. Wind is WSW at just 3 mph, basically nothing. The swell is 3 ft from the SW with a long 16-second period – that’s quality groundswell. The energy is moderate at 515, but with that glassy surface, it’s going to be clean. Cactus is a reef, so that long period will wrap in nicely. This is the pick of the early period.

Conditions get a bit lumpy again Thursday afternoon and all through Friday, with cross-on winds and choppy surf. The swell is bigger, around 5 ft, but the wind spoils it.

Saturday morning, 22nd August, is a beauty. Clean offshore wind from the ENE at 6 mph, swell 5 ft from the SW, 15-second period. The energy is strong at 1286. This is solid, powerful surf, and with offshore wind, it’ll be well shaped. It’s bigger than 5 ft, so it’s more for experienced surfers, but the quality is top notch. Saturday afternoon stays clean with a cross-off breeze.

Sunday morning, 23rd August, has a cross-off breeze and a 5 ft SW swell, but the real gem is Sunday afternoon – glassy again, no wind, swell 4 ft from the SW with a 17-second period. That’s very long period groundswell, and on a reef, it’s going to be pure and lined up. The energy is 897, moderate. This is a session you’ll remember.

The second week runs a bit hotter and colder. Monday 24th and Tuesday 25th are mostly cross-shore chop and messy. Wednesday 26th morning has a clean cross-off breeze and 4 ft swell, but it’s inconsistent. The 12-second period is okay, but the energy is low at 543. Thursday 27th morning is blown out by a strong 19 mph north wind, but Thursday afternoon gets interesting – a 5 ft SW swell with a very long 19-second period, energy at 1789. That’s strong, but the wind is cross-shore, so it’ll be a bit bumpy.

Friday 28th morning has a 7 ft SW swell – that’s expert territory – with a cross-off breeze and 16-second period, energy at 1953. It’s powerful, but only for the experienced crew. Saturday 29th sees offshore wind from the NE, but it’s strong at 25 mph, making it hard to paddle into. Sunday 30th through to the end of the window is a downward slide – poor conditions, onshore winds, and small swell.

So, the true standouts are Thursday morning 20th August for the glassy, clean 3 ft groundswell, and Sunday afternoon 23rd August for the glassy, long-period 4 ft swell. Saturday morning 22nd is also wicked if you’ve got the skill for the size.

– Rusty

Short Range Forecast

Mostly dry. Very mild (max 16°C on Thu morning, min 12°C on Fri morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Mon morning. Warm (max 20°C on Sun afternoon, min 13°C on Mon night). Wind will be generally light.

Wed
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
3
3
1
2
2
1
4
4
4
4
3
3
3
1
1
0
1
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)
1.5
SW
15
1.3
SW
15
0.9
SW
16
1.1
SW
16
1.6
SW
15
1.5
SW
15
1.6
SW
16
1.6
SW
16
1.6
SW
15
1.5
SW
15
1.3
SW
14
1.5
SW
17
1.3
SW
16
1.1
SW
15
1
SW
14
1.2
SW
14
1.6
SW
16
1.9
SW
15
1.7
SW
14
1.5
SW
13
Wave Graph
Metric surfscale
Energy kJ
966
685
416
574
1216
949
1364
1281
1200
924
746
1282
897
557
393
565
1364
1568
1155
778
Wind (km/h)
20
SW
10
NE
5
WSW
15
SSW
15
S
15
SSW
15
S
10
SE
10
ENE
15
SE
20
E
20
NNE
0
ESE
5
N
10
NNW
20
S
20
S
25
S
20
S
10
ESE
Wind State
cross-on
off
glassy
cross-on
cross-on
cross-on
cross-on
cross-off
off
cross-off
off
cross-off
glassy
glassy
cross
cross
cross-on
cross
cross-on
cross-off
High Tide
3:00AM1.03m
2:07PM0.91m
3:19AM0.92m
1:48PM0.84m
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
Low Tide
8:28PM0.06m
8:43AM0.44m
8:36PM0.13m
8:44AM0.56m
8:33PM0.21m
7:56AM0.66m
8:02PM0.28m
5:37AM0.64m
7:09PM0.28m
5:03AM0.50m
6:40PM0.23m
5:15AM0.35m
6:35PM0.15m
cloud
part cloud
clear
clear
clear
cloud
part cloud
part cloud
clear
clear
part cloud
cloud
cloud
cloud
light rain
part cloud
rain showers
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:09
7:09
7:07
7:05
7:05
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:13
6:14
6:14
6:15
6:15
6:15
 mm
1
1
Temp °C
15
15
16
16
14
13
13
14
15
16
14
19
20
18
16
16
14
14
14
13
Feels °C
11
13
13
13
12
10
9
11
12
12
10
15
18
16
15
12
10
9
9
9
  • Map Icons:
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  • 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 16 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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