Surf Forecasts:
Cactus surf forecast from 2 Sep 2026:
- Best quality surf: Thursday 3 Sep, 3AM (local time) - 5.5ft (1.7m), 14s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 10ft (3.0m), 17s period, SSW swell with 4,426 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 3AM (local time) - 5.5ft (1.7m), 14s 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 Thursday (Sep 03) at 3AM. The primary swell is predicted to be 1.7m and 14s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cactus in the next 16 days are 3.0m 17s and forecast to arrive on Wednesday (Sep 09) at 9AM. 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 Sunday (Sep 06) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 3rd Sep) | 5.5ft (1.7m) 14s |
| Best Surf | 3AM (Thu 3rd Sep) | 5.5ft (1.7m) 14s |
| Most Powerful | 9AM (Wed 9th Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Cactus over the next 16 days.
The Lowdown
G’day, Rusty here with a look at what’s ahead for Cactus.
Right now, we’re in a bit of a waiting game. The first real chance to paddle out comes on Wednesday morning, September 2nd. It’s not a classic, but there’s a 4ft SW groundswell (830) with a 16-second period, so the waves will have some punch. The wind is light and offshore from the WSW, which means clean conditions. The water is sitting at 60°, which is about average for this time of year. It’s a reef setup, so keep an eye on the tide. From Wednesday afternoon through to Friday, the wind gets stronger and onshore, the surf gets lumpy and messy, and honestly, I’d give it a miss.
Thursday morning, September 3rd, sees a 5ft SW swell (1033) but the wind is a cross-on light breeze, so it’s just okay. Friday morning, September 4th, has a 7ft SW swell (1799) with a clean cross-off wind from the north, but the easterly is blowing 19 mph, so it’s a bit of a battle. Still, the waves will have shape.
The standout window opens on Sunday morning, September 6th. The swell drops to 6ft from the SW (1123), but the wind is a clean offshore from the ENE at 16 mph. It’s a moderate breeze, but it’s offshore, so expect clean, lined-up waves. The period is 14 seconds, so there’s decent energy. This is the best session of the first week.
After that, the surf gets small and messy through the start of the second week. Monday, September 7th, is a write-off with tiny 2ft swell and strong winds. Tuesday, September 8th, morning sees a 6ft SW swell (1709) with a long 17-second period, but the wind is a stiff cross-off from the ESE at 19 mph. It’s clean, but strong.
Now, the real one to lock in your calendar: Thursday morning, September 17th. This is the standout of the entire outlook. We’ve got a 10ft SSW groundswell with a very long 18-second period and a combined energy of 5785 – that’s strong, powerful stuff. The wind is light and offshore from the east at 6 mph, so it’ll be glassy and clean. This is exceptional surf, but at 10ft, it’s strictly for experienced surfers. The long period will make it hollow and fast, perfect for a reef. Crowds are possible here, so get there early. This is the one.
The rest of the second week is a mix of small, cross-shore winds and average conditions. Not worth chasing.
So, to sum it up: your best bet is Sunday morning, September 6th for a clean, fun-size swell, and the absolute standout is Thursday morning, September 17th – a big, powerful, clean groundswell for the experts. Get out there.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Fri afternoon. Warm (max 24°C on Fri morning, min 13°C on Wed morning). Winds increasing (calm on Wed night, fresh winds from the WSW by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Sun night. Warm (max 22°C on Sun afternoon, min 11°C on Sat night). Winds increasing (light winds from the ESE on Sat night, strong winds from the ESE by Sun night). | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 21 | SW 19 | SW 17 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
783 | 1123 | 1171 | 1033 | 1336 | 1833 | 1799 | 2620 | 1994 | 1922 | 2096 | 1705 | 1123 | 791 | 295 | 138 | 271 | 984 | 1671 | 1261 | 2212 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | off | cross-off | on | on | on | cross-on | off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross | cross-off |
High Tide | 2:01PM0.98m | 2:38AM1.18m | 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 | |||||||
Low Tide | 8:04PM0.03m | 8:42AM0.36m | 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 | ||||||||
6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | |
— | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | |
mm | — | — | — | — | — | 1 | 2 | 4 | — | — | — | — | — | 1 | 16 | 5 | — | 2 | — | 1 | 2 |
Temp °C | 14 | 14 | 15 | 17 | 17 | 20 | 24 | 20 | 16 | 14 | 14 | 13 | 20 | 22 | 14 | 15 | 18 | 15 | 17 | 17 | 15 |
Feels °C | 9 | 9 | 12 | 15 | 14 | 14 | 20 | 15 | 11 | 10 | 10 | 11 | 15 | 18 | 6 | 8 | 11 | 9 | 11 | 11 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 16 | — | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | — | — | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | S 8 | SW 13 | SW 19 | SW 17 | SW 16 | — |
783 | — | 1171 | 1033 | 1336 | 1833 | 1799 | 2620 | — | — | 2096 | 1705 | 1123 | 791 | 295 | 54 | 144 | 984 | 1671 | 1261 | — | |
Swell 2 Height (m) Direction Period (s) | SW 6 | — | — | — | — | — | — | — | — | — | — | — | — | NNW 4 | S 6 | SW 13 | S 8 | SW 13 | SSE 7 | — | — |
47 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 54 | 138 | 46 | 238 | 38 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 22 | SW 21 | S 8 | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 73 | 271 | 41 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 15 | SW 14 | — | SW 14 | E 3 | N 4 | SW 15 | SW 15 | SW 13 | SW 14 | — | ENE 4 | NNE 4 | ESE 4 | ENE 4 | ESE 4 | — | — | SW 16 | SW 16 |
— | 1123 | 74 | — | 52 | 5 | 6 | 1654 | 1994 | 1922 | 50 | — | 11 | 4 | 42 | 20 | 12 | — | — | 95 | 2212 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 510 | 1045 | 1217 | 1 | 0 | 0 | 503 | 564 | 1198 | 940 | 1049 | 0 | 146 | 0 | 838 | 132 | 287 | 0 | 489 | 1045 | 1470 |
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.











