Surf Forecasts:
Cactus surf forecast from 14 Aug 2026:
- Best quality surf: Saturday 15 Aug, 12PM (local time) - 6ft (1.8m), 16s period, SW swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 3AM (local time) - 6ft (1.8m), 17s period, WSW swell with 1,955 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 12PM (local time) - 6ft (1.8m), 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 15) at 12PM. The primary swell is predicted to be 1.8m 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 1.8m 17s and forecast to arrive on Thursday (Aug 20) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Aug 18) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sat 15th Aug) | 6ft (1.8m) 16s |
| Best Surf | 12PM (Sat 15th Aug) | 6ft (1.8m) 16s |
| Most Powerful | 3AM (Thu 20th Aug) | 6ft (1.8m) 17s |
Table - best surf conditions forecast for Cactus over the next 16 days.
The Lowdown
Alright, let’s get into it. The next couple of weeks are a bit of a mixed bag, so you gotta pick your moments. The energy is there in pulses, but we’ve got some wind and sizing issues to dodge.
We kick things off on Friday the 14th. The swell is already up to a solid 7ft with strong energy (2166), but a cross-shore breeze out of the SSE is going to put a bit of chop on it. It’ll be lumpy, not really worth scrambling for. Better to let it settle.
Saturday the 15th is where it starts to get interesting. The morning sees a drop to a cleaner 6ft, with a cross-offshore wind. It’s still a bit junky. But by the afternoon, the wind backs off and goes cross-off from the ESE. That’s when it cleans up nicely, and the 16-second period with that sweet SW direction will line up good. That’s a solid, fun session for the experienced crew.
Sunday the 16th continues that trend early. The morning is looking prime with 4ft and a gentle offshore ENE breeze. Glassy, clean conditions. That’s a great time to be out, like the ocean is finally making sense. The afternoon gets a bit more cross-shore and drops off slightly, so the morning is the call.
Monday the 17th is another early morning winner. Only 3ft in the morning, but it’s clean and offshore. The swell fills in a bit to 4ft later in the day, still offshore. It’s small but clean, perfect for getting the longboard out and just enjoying the glide.
Then we hit a wall. Tuesday the 18th is blown out. Strong winds, 25 mph, killing any chance of a decent wave. Same story on the afternoon. We’re looking at a few days of poor-to-average stuff. Wednesday the 19th has a tiny bit of hope with a glassy morning, but it’s small and weak (453). The afternoon gets messy. Thursday the 20th and Friday the 21st are mostly cross-onshore with fluctuating size and poor conditions. Not worth the paddle.
We skip ahead about a week. Saturday the 22nd brings it back to life. A chest-high 5ft with a clean cross-offshore breeze in the morning, and the 15-second period means some real push. This is one of the better options on offer. It’s got good energy (1001) and the break is fairly consistent.
Sunday the 23rd is a standout if you can wait. The morning is glassy with a light offshore wind and a clean 5ft. The afternoon sees a pulse of energy jump up to 3487 with a solid 6ft swell, but it goes a bit cross-shore. The morning is the one to chase.
Monday the 24th has solid size, up to 7ft with that strong 18-second period. But the wind is up from the north, cross-offshore and gusty. It’ll be powerful but probably unruly. Tuesday the 25th is a down day with stronger winds and the end of the swell.
The final stretch is a bit of a fade-out. Wednesday the 26th is blown out from the west, just onshore junk. Thursday the 27th is cross-shore and average. But we finish on a high note. Friday the 28th morning has a clean 4ft with offshore winds. And the real promising one is Saturday the 29th morning: clean, offshore, and a touch of energy. A good, clean small wave to end the run.
The standout is Sunday the 23rd morning. It’s got the glass, the size, and the direction. The other one is the afternoon of Saturday the 15th, which sets the tone for the weekend.
Rusty
Short Range ForecastMostly dry. Very mild (max 17°C on Sun afternoon, min 13°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Tue morning, min 13°C on Tue night). Winds decreasing (strong winds from the N on Tue morning, calm by Wed morning). | |||||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 19 | SW 18 | SW 17 | SW 16 | SW 15 | WSW 15 | WSW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph | ||||||||||||||||||||
2166 | 1832 | 1392 | 1384 | 836 | 668 | 590 | 428 | 310 | 619 | 441 | 686 | 487 | 443 | 453 | 683 | 1900 | 1571 | 1493 | 964 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-on | glassy | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 1:22AM1.00m | 1:29PM1.24m | 1:39AM1.08m | 1:39PM1.18m | 1:58AM1.12m | 1:49PM1.13m | 2:19AM1.13m | 1:59PM1.07m | 2:40AM1.10m | 2:07PM0.99m | 3:00AM1.03m | 2:07PM0.91m | 3:19AM0.92m | |||||||
Low Tide | 7:37PM0.11m | 7:13AM0.06m | 7:42PM0.07m | 7:34AM0.10m | 7:51PM0.03m | 7:53AM0.16m | 8:02PM0.01m | 8:12AM0.23m | 8:15PM0.01m | 8:30AM0.33m | 8:28PM0.06m | 8:43AM0.44m | 8:36PM0.13m | |||||||
— | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | |
6:08 | — | — | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 15 | 16 | 16 | 15 | 17 | 15 | 16 | 17 | 17 | 20 | 19 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Feels °C | 11 | 11 | 11 | 12 | 11 | 11 | 11 | 10 | 12 | 13 | 12 | 10 | 15 | 9 | 12 | 11 | 12 | 11 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 16 | SW 14 | SW 18 | SW 17 | SW 16 | SW 15 | SW 15 | — | — | — | SW 16 |
2166 | 1832 | 1392 | 1384 | 836 | 668 | 590 | 428 | 286 | 619 | 346 | 686 | 487 | 443 | 453 | 631 | — | — | — | 964 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 16 | SW 22 | SW 19 | — | — | — | — | SW 19 | — | — | — | SW 6 |
— | — | — | — | — | — | — | — | 310 | 163 | 441 | — | — | — | — | 303 | — | — | — | 60 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 23 | — | SSE 4 | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 86 | — | 1 | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | ESE 4 | — | ESE 3 | — | ESE 2 | ESE 4 | — | — | ENE 3 | NNE 4 | N 4 | NNE 3 | NNW 3 | WSW 15 | WSW 17 | SW 16 | SW 16 | SW 16 |
— | — | 13 | — | 3 | — | 1 | 11 | — | — | 2 | 16 | 7 | 4 | 3 | 683 | 1900 | 1571 | 1493 | 87 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 243 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 651 | 564 | 649 | 0 | 401 | 401 | 510 | 1045 | 491 |
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.











