
Surf Forecasts:
Cactus surf forecast from 3 Aug 2026:
- Best quality surf: Thursday 6 Aug, 6PM (local time) - 5ft (1.6m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 9 Aug, 9PM (local time) - 11ft (3.5m), 18s period, SW swell with 6,585 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 12PM (local time) - 4ft (1.2m), 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 Tuesday (Aug 04) at 12PM. The primary swell is predicted to be 1.2m and 15s 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 18s and forecast to arrive on Sunday (Aug 09) at 9PM. Winds are predicted to be 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 Friday (Aug 07) at 12PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 4th Aug) | 4ft (1.2m) 15s |
| Best Surf | 6PM (Thu 6th Aug) | 5ft (1.6m) 16s |
| Most Powerful | 9PM (Sun 9th Aug) | 11ft (3.5m) 18s |
Table - best surf conditions forecast for Cactus over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on offer. The next couple of weeks are a bit of a mixed bag at Cactus. There’s a solid run of South-West groundswell on the cards, but the wind is going to be the main story – it’s gonna mess things up for a good chunk of the time. We’ve got a few windows of clean conditions, but you’ll have to pick your moments.
The week kicks off with some half-decent options. Tuesday morning the 4th of August sees a clean 4ft swell from the SW, with a moderate cross-off breeze. The water’s sitting at 60°, which is pretty normal for this time of year. The energy is moderate (548). It’s not world-class, but it’s surfable. By Tuesday afternoon, it gets glassy. The swell drops to 3ft, but the period is a very long 15 seconds, so that groundswell will have some real push. The energy is lower (364), but clean conditions make it a nice session for a log or a mid-length.
Wednesday the 5th is a bit of a write-off with onshore winds in the afternoon, and Thursday morning the 6th is the first real standout. Glassy conditions, 4ft of SW swell at 16 seconds, and a clean face. The energy is moderate (570). This is the window to be in the water. Thursday afternoon picks up a bit with 5ft, but the wind swings cross-shore, so it’s not as clean.
Friday the 7th sees the swell building to 5ft, but the wind is cross-off in the morning so it stays clean. The energy is ramping up (1287). That’s a solid, fun size. But then the weekend is a write-off. Saturday the 8th and Sunday the 9th are blown out with strong onshore winds and rain. The swell gets big – 10ft on Sunday – but with 28 mph onshore winds, it’s a complete mess. That’s one for the kite crew, not the paddle-in crew.
The following week is more of the same. Monday the 10th has a 8ft SW swell with a 17-second period, but it’s cross-on and lumpy. The energy is very strong (3224). It’s a lot of water moving around, but the wind is just not playing ball. The next couple of days, Tuesday the 11th and Wednesday the 12th, see the swell staying big (8ft to 10ft), and while the wind eases a bit on Wednesday afternoon, it’s still onshore. The energy is huge (4864), but it’s not going to be pretty.
Now, there is a light at the end of the tunnel. Saturday the 15th of August afternoon is another standout. Glassy conditions, 6ft of SW swell at a long 17-second period, and the energy is strong (1682). The guidance says it’s excellent for experienced surfers. That is the session to aim for later in the run. Sunday the 16th also has clean mornings with cross-off winds and 5ft swell.
So, to sum it up: the best on offer is Thursday morning the 6th for a clean, glassy session on a smaller, long-period swell, and Saturday afternoon the 15th for a bigger, more powerful, and still glassy wave. The rest of the time, you’ll be fighting the wind or dealing with blown-out, heavy conditions that are only for the experienced.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Tue afternoon, min 11°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Sat night. Warm (max 21°C on Fri morning, min 11°C on Sun night). Winds increasing (light winds from the E on Fri night, near gales from the WSW by Sat night). | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 12 | SW 15 | SW 15 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | WSW 9 | SW 12 | SW 14 | SW 18 | WSW 17 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
319 | 258 | 335 | 361 | 694 | 581 | 567 | 1014 | 1349 | 1287 | 1927 | 1201 | 1068 | 1547 | 1346 | 2524 | 2971 | 3790 | 3224 | 4474 | 5334 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-off | cross-off | on | cross | glassy | cross | off | cross-off | cross-on | off | cross | cross-on | on | on | on | cross-on | cross | cross-on | on |
High Tide | 2:45PM1.07m | 3:17AM1.01m | 2:52PM0.90m | 3:49AM0.95m | 2:24PM0.75m | 4:31AM0.85m | 11:17AM0.96m | 2:07AM0.58m | 11:38AM1.14m | 1:00AM0.58m | 12:03PM1.28m | 00:48AM0.63m | |||||||||
Low Tide | 9:00PM0.13m | 9:12AM0.35m | 9:08PM0.19m | 9:37AM0.53m | 8:59PM0.25m | 9:18AM0.74m | 8:14PM0.26m | 7:25PM0.20m | 4:19AM0.56m | 7:12PM0.14m | 5:06AM0.41m | 7:16PM0.11m | |||||||||
7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | |
— | 6:02 | — | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 2 | 2 | 7 | — | — | — | — | — | 1 |
Temp °C | 16 | 18 | 18 | 17 | 18 | 16 | 16 | 16 | 17 | 21 | 21 | 19 | 18 | 18 | 13 | 13 | 14 | 14 | 15 | 16 | 13 |
Feels °C | 13 | 16 | 13 | 12 | 14 | 14 | 15 | 13 | 12 | 13 | 16 | 10 | 12 | 14 | 3 | 4 | 6 | 10 | 8 | 9 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 15 | SW 15 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | — | — | — | SW 18 | WSW 17 | — | SW 16 |
319 | 258 | 322 | 361 | 694 | 581 | 567 | 1014 | 1349 | 1287 | 1927 | 1201 | 1068 | 1520 | — | — | — | 3790 | 3224 | — | 5334 | |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 10 | SW 21 | SW 15 | SSW 9 | WSW 6 | WSW 5 | SSW 7 | — | — | — | — | W 5 | — | — | — | — | — | — | — | — |
229 | 106 | 150 | 171 | 31 | 7 | 2 | 18 | — | — | — | — | 4 | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 20 | SW 10 | — | S 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | 335 | 45 | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NE 3 | — | NE 3 | NNW 2 | SW 18 | — | S 8 | — | — | N 4 | WSW 17 | NNE 2 | — | WSW 15 | WSW 9 | SW 12 | SW 14 | — | NNW 4 | SW 16 | SW 16 |
1 | — | 3 | 1 | 81 | — | 1 | — | — | 9 | 1570 | 1 | — | 1547 | 1346 | 2524 | 2971 | — | 14 | 4474 | 3172 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 0 | 1 | 1 | 178 | 0 | 0 | 0 | 0 | 401 | 178 | 0 | 651 | 1165 | 653 | 878 | 1045 | 652 | 649 | 1045 | 1045 |
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.











