
Surf Forecasts:
Cactus surf forecast from 3 Sep 2026:
- Best quality surf: Friday 4 Sep, 12AM (local time) - 7ft (2.1m), 15s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 9 Sep, 12PM (local time) - 6.5ft (2.0m), 21s period, SW swell with 3,293 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 12AM (local time) - 7ft (2.1m), 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 Friday (Sep 04) at 12AM. The primary swell is predicted to be 2.1m and 15s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cactus in the next 16 days are 2.0m 21s and forecast to arrive on Wednesday (Sep 09) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Monday (Sep 07) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 4th Sep) | 7ft (2.1m) 15s |
| Best Surf | 12AM (Fri 4th Sep) | 7ft (2.1m) 15s |
| Most Powerful | 12PM (Wed 9th Sep) | 6.5ft (2.0m) 21s |
Table - best surf conditions forecast for Cactus over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into what’s happening for the next couple of weeks at Cactus. This is a tricky run, so I’ll walk you through the good, the bad, and the ugly.
The overall pattern is a bit of a mixed bag. We’ve got plenty of groundswell energy from the SW, but for the first few days, the wind is just not playing nice. The water temp is sitting at 61°, which is about average for this time of year, so no surprises there.
We start off on Thursday, 3rd September, with a clean 5ft SW swell, but it’s a cross-on breeze and a light bump on the surface. The energy is there at 1033, but it’s not really clean enough to get excited about. Friday the 4th sees the swell jump up to 7ft, and by the afternoon it’s a full 8ft, but the wind goes onshore and the rain moves in. That’s a mess. Saturday the 5th is even worse – 8ft onshore slop, total washout. This is kite-surfing territory, not for paddle.
Alright, now for the first real standout. Sunday morning, 6th September – that’s the call. The wind swings offshore from the ENE, light and clean, and we’ve got a solid 6ft SW groundswell with a 14-second period. The energy is moderate at 1139, but the conditions are described as excellent for experienced surfers. The swell is over 5ft, so it’s a bit much for beginners, but for the rest of you, this is the best window in the first week. The break is a reef, so that long-period groundswell will line up nicely.
After that, we hit a quiet patch. The surf drops off significantly from Monday the 7th into Tuesday the 8th – tiny, messy, and windy. Not worth paddling out. The wave energy falls to 285 and 473, real weak stuff.
Things start to look interesting again around Tuesday, 15th September. That morning we’ve got a similar setup to the 6th: 5ft SW swell, 17-second period, clean cross-off wind from the SE. The energy is solid at 1297, and the forecast says excellent conditions for experienced surfers. This is the second standout. It’s a week and a half out, so keep an eye on it, but it’s promising.
The 16th September also offers a decent window with a clean 5ft swell and a glassy offshore breeze. That’s a nice bonus.
The very end of the run, the 17th and 18th, falls apart again with strong onshore wind and rain. Forget about it.
The only true standouts are Sunday morning, 6th September, and Tuesday morning, 15th September. Both for the clean offshore wind, moderate groundswell, and that reef break handling the long period well. Crowds are possible at Cactus, but with these conditions, it’s worth the gamble.
Stay stoked, and keep your eyes on the horizon.
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Fri afternoon. Warm (max 24°C on Fri morning, min 10°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the E by Sat night). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Sun night. Very mild (max 19°C on Sun afternoon, min 12°C on Sun morning). Winds increasing (light winds from the ENE on Sun morning, strong winds from the SE by Sun night). | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 12 | SW 13 | SW 13 | SW 14 | SW 14 | SW 13 | SW 13 | SW 20 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 19 | SW 17 |
Wave Graph | |||||||||||||||||||||
1033 | 1220 | 1857 | 1823 | 2490 | 1606 | 1713 | 1693 | 1482 | 1139 | 886 | 345 | 205 | 261 | 1202 | 1282 | 931 | 793 | 1297 | 3075 | 2327 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | off | cross | on | on | on | cross-on | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:55PM0.86m | 2:56AM1.07m | 1:20PM0.80m | 3:04AM0.92m | 12:18PM0.85m | 2:38AM0.77m | 11:43AM0.99m | 1:29AM0.68m | 11:44AM1.13m | 00:44AM0.70m | 11:57AM1.23m | 00:28AM0.79m | 12:11PM1.28m | 00:26AM0.90m | |||||||
Low Tide | 8:05PM0.07m | 8:45AM0.54m | 7:54PM0.11m | 7:58AM0.69m | 7:31PM0.13m | 6:09AM0.69m | 7:06PM0.13m | 5:24AM0.54m | 6:51PM0.12m | 5:29AM0.37m | 6:45PM0.11m | 5:45AM0.23m | 6:43PM0.10m | ||||||||
6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | |
— | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | — | 6:24 | — | |
mm | — | — | — | 1 | 3 | — | — | — | — | — | — | 4 | 1 | — | 2 | 2 | — | — | — | — | — |
Temp °C | 17 | 17 | 18 | 24 | 20 | 17 | 14 | 13 | 12 | 17 | 19 | 14 | 15 | 16 | 15 | 16 | 16 | 14 | 16 | 19 | 17 |
Feels °C | 14 | 14 | 14 | 19 | 17 | 13 | 8 | 9 | 10 | 13 | 15 | 7 | 9 | 10 | 9 | 12 | 10 | 7 | 9 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | — | — | SW 13 | SW 13 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 19 | SW 17 |
1033 | 1220 | 1857 | 1823 | 2490 | — | — | 1693 | 1482 | 1139 | 886 | 345 | 205 | 212 | 1202 | 1282 | 931 | 793 | 1297 | 3075 | 2327 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 23 | SW 21 | SW 20 | — | S 8 | S 8 | S 7 | SW 22 | — | SSE 8 |
— | — | — | — | — | — | — | — | — | — | — | 21 | 71 | 261 | — | 57 | 1 | 42 | 897 | — | 123 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | S 21 | — | — | — | — | — | S 8 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | 9 | — | — | — | — | — | 74 | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 14 | E 3 | — | SW 15 | SW 15 | SW 12 | SW 14 | — | ENE 3 | — | SSE 5 | SE 6 | SE 5 | SE 5 | ESE 5 | SE 8 | ESE 4 | ESE 4 | SE 8 | SSE 8 |
— | 51 | 6 | — | 1761 | 1606 | 1713 | 29 | — | 4 | — | 63 | 157 | 89 | 110 | 113 | 125 | 46 | 24 | 122 | 73 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 648 | 564 | 1198 | 940 | 1344 | 0 | 0 | 0 | 489 | 243 | 203 | 0 | 0 | 489 | 1527 | 1577 | 1620 | 1198 |
Best forecast wave conditions in Nullarbor | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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.










