Cactus Surf Break

Lat Long: 32.09° S 132.98° E

Cactus Surf Forecast and Surf Report

Issued: 2 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cactus sea temperature is
15.2° C
0.4° 

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


Cactus surf forecast from 20 Aug 2026:

  • Best quality surf: Saturday 22 Aug, 12AM (local time) - 5.5ft (1.7m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 6PM (local time) - 6.5ft (2.0m), 18s period, SW swell with 2,485 kJ wave energy.
  • Next surfable swell (1★+): Saturday 22 Aug, 12AM (local time) - 5.5ft (1.7m), 16s 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 Saturday (Aug 22) at 12AM. The primary swell is predicted to be 1.7m and 16s period. 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 2.0m 18s and forecast to arrive on Thursday (Aug 27) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Thursday (Aug 27) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sat 22nd Aug)5.5ft (1.7m) 16s
Best Surf12AM (Sat 22nd Aug)5.5ft (1.7m) 16s
Most Powerful 6PM (Thu 27th Aug)6.5ft (2.0m) 18s

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


The Lowdown

G’day, Rusty here. Let’s have a look at the next couple of weeks for our stretch of coast.

The window opens with a bit of a slow start. Thursday the 20th is pretty marginal – there’s some swell, but it’s cross-onshore and choppy, so not really worth getting wet for. We’re looking at about a day and a half of that before things clean up.

The first real highlight lands on Saturday morning, the 22nd. We’ve got a nice 5ft SW swell, light offshore NE wind, and it’s clean. That’s your window. The energy is moderate (1302), and it’s an exposed reef setup, so it’ll have some punch. Definitely the best session of the first week.

Sunday morning, the 23rd, is still okay – cross-off wind and a 6ft SW swell at 17 seconds (that’s a proper groundswell) – but the afternoon is the one to watch. Glassy conditions, light air, and a 5ft SW swell. It’ll be smooth and lined up. Good for a longboard or a funboard.

Monday the 24th drops off quickly, and by Tuesday the 25th it’s blown out – onshore winds and lumpy. Avoid. That poor spell hangs around for a few days. Wednesday the 26th is small and clean but weak.

Then things get interesting. Thursday the 27th has some proper energy building – the afternoon sees a 6ft SW swell with a 19-second period, and the combined energy jumps to 2402. That’s a strong one. The wind is cross-off and clean, so it should be hollow and fast. This is the standout of the second week, but it’s still a few days out, so treat it as promising rather than locked in.

Friday the 28th afternoon is another spike – 8ft from the WSW, strong energy (3500) – but that’s getting big, and with a 16-second period, it’s going to be powerful. Only for experienced surfers. The wind is cross-off and clean, so it’ll hold its shape, but it’ll be a handful.

Saturday the 29th morning is slightly smaller at 8ft, still WSW, with a moderate offshore breeze. Clean, but again, big. The rest of the weekend and into Monday the 31st sees it drop off and turn onshore – Monday afternoon is a full-on onshore mess, so stay away.

Tuesday the 1st of September morning is a nice surprise – glassy, light offshore, and a clean 5ft WSW swell. Good conditions, but the energy is only moderate (950). Still, a solid session if you’re keen.

After that, the wind turns again in the first few days of September, with onshore and cross-onshore winds making conditions poor from the 3rd onwards. No real standouts there.

So, overall: Saturday the 22nd morning is your best early call, and Thursday the 27th afternoon is the big one to watch – that long-period SW groundswell with clean cross-off wind is going to be special if it holds. The rest is a mix of clean windows and blown-out spells, so pick your times.

For the water temp, it’s sitting at 59°, which is about normal for this time of year, so no surprises there.

Keep an eye on that Thursday the 27th – that’s the one.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Sun morning, min 13°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 13mm), heaviest on Mon morning. Very mild (max 19°C on Sun afternoon, min 10°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the SSW by Mon night).

Thu
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
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
2
2
4
4
2
4
3
3
3
2
1
0
0
0
3
2
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
16
1.6
SW
15
1.6
SW
15
1.7
SW
16
1.7
SW
16
1.6
SW
15
1.5
SW
15
1.5
SW
15
1.6
SW
17
1.4
SW
16
1.2
SW
15
1
SW
14
0.9
SW
14
1.4
SW
16
1.5
SW
15
1.6
SW
15
1.6
SW
14
1.3
SW
13
1.1
SW
12
0.8
SW
13
Wave Graph
Metric surfscale
Energy kJ
574
1135
1048
1511
1402
1216
936
924
1388
979
623
393
327
1055
1028
1011
917
537
335
235
Wind (km/h)
15
SW
10
SSW
15
S
15
S
10
SE
10
NE
15
SSE
15
E
15
NE
5
SSE
10
E
15
E
15
SSE
30
SSW
25
SSW
20
S
10
ESE
15
NNE
10
N
20
NNE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-off
off
cross
off
cross-off
glassy
off
off
cross
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
High Tide
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
12:06PM1.30m
00:22AM0.89m
Low Tide
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
5:35AM0.21m
6:40PM0.08m
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
light rain
mod rain
light rain
rain showers
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:09
7:07
7:05
7:05
7:03
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:13
6:14
6:14
6:15
6:15
6:15
6:16
 mm
1
10
1
1
Temp °C
16
14
13
13
14
16
16
14
18
19
18
12
14
15
14
13
12
14
17
16
Feels °C
12
12
10
10
12
14
12
10
15
17
14
10
13
12
8
8
9
10
13
11
  • 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 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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