
Surf Forecasts:
Cactus surf forecast from 11 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 9AM (local time) - 5ft (1.6m), 15s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 15 Sep, 6PM (local time) - 6ft (1.9m), 14s period, SSW swell with 1,468 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 9PM (local time) - 4ft (1.2m), 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 Friday (Sep 11) at 9PM. The primary swell is predicted to be 1.2m and 16s 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 1.9m 14s and forecast to arrive on Tuesday (Sep 15) 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 0.9m 4s period and expected on Wednesday (Sep 16) at 12AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Fri 11th Sep) | 4ft (1.2m) 16s |
| Best Surf | 9AM (Wed 16th Sep) | 5ft (1.6m) 15s |
| Most Powerful | 6PM (Tue 15th Sep) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Cactus over the next 16 days.
The Lowdown
Alright, Rusty here. Let's take a look at what's in store for us over the coming weeks.
Alright, so the only spot on the radar for this period is Cactus. It's a reef break that's fairly consistent, and it wants the swell from the southwest. The water temp is sitting at about 60° with a tiny anomaly of 0.3° – so, pretty much right on the money for this time of year.
The first real chance to get a wave is on Friday the 11th of September. It's an afternoon session, nothing too big at 4ft from the southwest, but the period is a solid 15 seconds – that's proper groundswell. The wind is a light offshore from the northeast, keeping things clean. The combined energy is sitting at a solid 666 (moderate). It’s looking like a nice, solid opener. Crowds are a possibility here, so you might have to share.
Saturday the 12th brings a fresh breeze, but it's cross-offshore, so the waves will still be clean at 4ft. The energy jumps up all the way to 1134 (moderate), but the conditions are a bit marginal, so it’s not the top pick.
Sunday the 13th is a write-off. Strong onshore wind from the west-southwest and poor conditions. Don't even bother.
Monday the 14th morning is a glass-off! The wind is a light easterly, glassy as anything, with a clean 4ft southwest swell. The energy is 564 (moderate) and it's going to be beautiful out there. The period is 14 seconds, so still a quality long-period groundswell. This is a standout session for the coming week.
Tuesday the 15th bumps up to 5ft, but those fresh winds from the southeast keep it just on the cusp of good. It's cross-off, so it's clean, but the 19 mph wind will have you working. Energy is moderate at 1195.
Then we hit Wednesday the 16th of September. This is the real standout of the whole forecast. Early morning has a 5ft southwest swell with a 15-second period, and a 16 mph offshore wind from the east. That is a recipe for perfection at a reef. The combined energy is 1138 (moderate) and the call is excellent for experienced surfers. This is your session.
After that, the surf dwindles a bit, with Thursday the 17th offering some cleaner but smaller 4ft waves before a long flat spell kicks in through the weekend. From the 18th to the 20th, we've got a blank run with tiny, low-energy swell and strong winds. Nothing to see here.
Things look interesting again the following week. Monday the 21st gets some bigger swell (6ft to 7ft), but the wind is onshore, so it’s messy. However, Tuesday the 22nd looks big. We’re looking at 8ft of solid southwest groundswell. The energy is a very strong 2736, pushing it into expert-only territory. But the wind is light and cross-offshore, so it could be a serious day for the crew who can handle it. That's a long-range standout but less certain.
The week continues with solid 6ft to 5ft swell on Wednesday the 23rd and Thursday the 24th, with clean morning winds, but the energy and cross-shore winds keep it in the "pretty good but not epic" category.
The final call for the forecast is Saturday the 26th of September. That morning brings a clean 6ft, cross-off wind, but the real standout is the afternoon with a 7ft southwest groundswell, a very long 18-second period, and only a slight air. The combined energy is a massive 2602 (strong). This is another session that screams "excellent for experienced surfers" – a perfect way to close out the window if you can wait that long.
Stay frothy.
- Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Sat afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the N on Sat night, calm by Mon morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Thu morning, min 9°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
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 15 | SW 16 | SW 17 | SW 16 | SW 18 | WSW 16 | WSW 16 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 |
Wave Graph | ||||||||||||||||||||
666 | 746 | 742 | 474 | 307 | 864 | 832 | 360 | 507 | 390 | 728 | 1169 | 1092 | 1179 | 1138 | 1140 | 979 | 598 | 453 | 290 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross | cross-off | on | on | on | glassy | cross | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 00:44AM1.14m | 12:48PM1.22m | 00:58AM1.24m | 12:58PM1.18m | 1:14AM1.30m | 1:09PM1.14m | 1:31AM1.32m | 1:19PM1.09m | 1:48AM1.30m | 1:29PM1.04m | 2:06AM1.24m | 1:37PM0.97m | 2:22AM1.15m | |||||||
Low Tide | 6:47PM0.04m | 6:43AM0.02m | 6:53PM-0.01m | 7:01AM0.02m | 7:01PM-0.05m | 7:19AM0.05m | 7:11PM-0.08m | 7:37AM0.10m | 7:23PM-0.08m | 7:53AM0.17m | 7:36PM-0.05m | 8:08AM0.26m | 7:47PM0.01m | |||||||
— | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | |
6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:28 | — | — | 6:29 | — | — | 6:30 | — | — | 6:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 19 | 26 | 28 | 26 | 15 | 15 | 13 | 15 | 15 | 14 | 13 | 13 | 12 | 14 | 17 | 16 | 20 | 23 | 23 |
Feels °C | 17 | 14 | 19 | 22 | 20 | 11 | 11 | 11 | 12 | 12 | 11 | 8 | 7 | 6 | 9 | 12 | 11 | 14 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 16 | SW 17 | SW 16 | SW 14 | SW 16 | — | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 |
666 | 746 | 742 | 474 | 248 | 737 | — | 360 | 507 | 390 | 728 | 1169 | 1092 | 1179 | 1138 | 1140 | 979 | 598 | 453 | 290 | |
Swell 2 Height (m) Direction Period (s) | — | SE 4 | SW 18 | SW 20 | SW 18 | S 11 | — | SW 7 | SW 19 | SW 18 | — | — | — | — | — | — | — | — | — | — |
— | 2 | 392 | 65 | 307 | 2 | — | 65 | 57 | 109 | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 18 | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | 12 | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | ESE 4 | N 3 | NNW 4 | N 4 | WSW 16 | WSW 16 | SW 15 | — | — | SE 3 | SSE 4 | SSE 5 | ESE 4 | E 4 | ESE 2 | — | NE 4 | NNE 2 | NNE 3 |
— | 5 | 5 | 8 | 18 | 864 | 832 | 78 | — | — | 1 | 26 | 51 | 25 | 19 | 1 | — | 12 | 1 | 3 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 178 | 178 | 564 | 564 | 878 | 969 | 0 | 1093 | 0 | 491 | 491 | 491 | 0 | 0 | 0 | 1 | 0 | 1 |
Best forecast wave conditions in Nullarbor | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










