
Surf Forecasts:
Cactus surf forecast from 27 Jul 2026:
- Best quality surf: Thursday 30 Jul, 3AM (local time) - 5.5ft (1.7m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 29 Jul, 6AM (local time) - 11ft (3.5m), 16s period, SSW swell with 6,033 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 3AM (local time) - 5.5ft (1.7m), 13s 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 (Jul 30) at 3AM. The primary swell is predicted to be 1.7m and 13s 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 3.5m 16s and forecast to arrive on Wednesday (Jul 29) at 6AM. 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 Saturday (Aug 01) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 30th Jul) | 5.5ft (1.7m) 13s |
| Best Surf | 3AM (Thu 30th Jul) | 5.5ft (1.7m) 13s |
| Most Powerful | 6AM (Wed 29th Jul) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Cactus over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
We’ve got a solid window of SW groundswell on the horizon for Cactus, but it’s a bit of a slow cooker. The first few days are a write-off with fresh cross-onshore winds and lumpy, poor surf through Tuesday the 28th and Wednesday the 29th. The swell is there, but it’s ugly.
The real action starts to show its face on Thursday the 30th. That morning, the wind swings offshore from the NE, and we get a clean 5 ft SW swell with a period of 13 seconds. The combined energy is moderate at 784, but the light offshore breeze will make it rideable. The water temp is 60°, which is about average for this time of year, so nothing unusual there. It’s not pumping, but it’s the first real window of clean surf after a couple of rough days.
Keep an eye on Friday afternoon, July 31st. The swell drops to 3 ft, but the wind goes near-silent with a cross-off breeze, and the period stretches to 14 seconds. The energy is still low at 609, but it’ll be tidy and fun for a longboard.
The standout of the whole run, though, is without a doubt Sunday afternoon, August 2nd. We get a clean 8 ft SW swell with a 16-second period – that’s a proper groundswell. The combined energy is 2664, which is strong. The wind is cross-offshore from the SE, keeping it clean. This is a bigger swell, over 6 ft, so it’s for the more experienced crew. The long period will make for some nice lines, but at a reef break like Cactus, it should handle it well. Crowds are possible here, so don’t expect to have it to yourself.
There’s a gap of poor or marginal conditions after that until Saturday, August 9th, when we see another 6 ft SW groundswell with a 19-second period, but it’s a straight onshore wind. That one’s a miss.
Then, for the second week, we get a big pulse of energy around Monday, August 10th. The swell hits 10 ft from the SW, with a 14-second period and massive energy at 5765. That’s a big, powerful swell, but the wind is a fresh cross-shore, making it lumpy. It’s a beast of a wave, but not clean. By Wednesday the 12th, it’s 12 ft from the SW with energy over 7000, but it’s onshore and messy. This late run is for experts only, and even then, the wind is a problem. It’s promising for size, but the quality is a gamble this far out.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Tue morning, min 11°C on Thu morning). Winds decreasing (fresh winds from the SSW on Tue morning, light winds from the ENE by Thu morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sat afternoon, min 11°C on Sun night). Winds increasing (light winds from the NNE on Fri afternoon, fresh winds from the SSE by Sat night). | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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 15 | SW 15 | SW 16 | SW 15 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 12 |
Wave Graph | |||||||||||||||||||||
1402 | 1610 | 1801 | 3021 | 2027 | 1197 | 784 | 581 | 418 | 342 | 331 | 311 | 984 | 1420 | 1364 | 1096 | 2601 | 1760 | 1135 | 905 | 496 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 12:17PM1.29m | 00:29AM0.76m | 12:39PM1.36m | 00:47AM0.84m | 1:00PM1.41m | 1:08AM0.91m | 1:22PM1.42m | 1:30AM0.97m | 1:44PM1.40m | 1:55AM1.02m | 2:06PM1.33m | 2:21AM1.04m | 2:27PM1.22m | 2:48AM1.04m | |||||||
Low Tide | 7:02PM0.16m | 5:57AM0.13m | 7:16PM0.11m | 6:24AM0.06m | 7:33PM0.07m | 6:50AM0.01m | 7:50PM0.04m | 7:16AM-0.00m | 8:08PM0.03m | 7:44AM0.02m | 8:27PM0.04m | 8:13AM0.09m | 8:45PM0.08m | ||||||||
7:30 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | |
— | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 14 | 13 | 13 | 13 | 13 | 14 | 13 | 15 | 16 | 16 | 16 | 19 | 16 | 13 | 14 | 13 | 12 | 14 | 14 |
Feels °C | 8 | 7 | 9 | 9 | 9 | 10 | 10 | 10 | 9 | 11 | 13 | 11 | 8 | 13 | 12 | 7 | 9 | 7 | 6 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | — | — | — | SW 16 | SW 15 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SW 13 | SW 18 | SW 17 | — | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 12 |
— | — | — | 3021 | 2027 | 1197 | 784 | 581 | 418 | 342 | 331 | 295 | 984 | 1420 | — | 1096 | 2601 | 1760 | 1135 | 905 | 496 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 22 | SW 21 | SW 20 | SW 18 | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 19 | 70 | 239 | 311 | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 21 | S 9 | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | 69 | 39 | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 14 | SW 15 | SW 15 | SW 16 | SW 15 | — | — | — | — | NNE 2 | — | NNE 2 | NNW 4 | NW 5 | SW 16 | SW 6 | SW 16 | — | — | — | SE 4 |
1402 | 1610 | 1801 | 64 | 55 | — | — | — | — | 1 | — | 1 | 22 | 13 | 1364 | 77 | 63 | — | — | — | 15 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1045 | 1423 | 940 | 552 | 243 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 564 | 510 | 648 | 491 | 552 | 153 | 0 | 0 | 0 |
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.










