Surf Forecasts:
Cunns surf forecast from 24 Aug 2026:
- Best quality surf: Friday 28 Aug, 9AM (local time) - 5ft (1.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 6AM (local time) - 7ft (2.1m), 16s period, SW swell with 2,241 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 6PM (local time) - 5ft (1.6m), 14s period with SW swell.
Best Forecast Surf Conditions for Cunns this week:
The surf forecast for Cunns over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 25) at 6PM. The primary swell is predicted to be 1.6m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cunns in the next 16 days are 2.1m 16s and forecast to arrive on Tuesday (Aug 25) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Aug 29) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 25th Aug) | 5ft (1.6m) 14s |
| Best Surf | 9AM (Fri 28th Aug) | 5ft (1.5m) 16s |
| Most Powerful | 6AM (Tue 25th Aug) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Right then. Cunns is a tricky old reef that doesn't fire all that often, and for this stretch, you're going to have to be patient and pick your moments. It's an exposed spot, so it catches plenty of energy, but the wind and the timing have to line up. The first few days are a write-off, with messy cross-shore breezes and conditions that'll have you shaking your head. Tuesday the 25th through to Thursday the 27th are best left alone—choppy, lumpy, and not worth the paddle out. The wait is worth it for what comes next. The combined swell energy is strong, and that long-period groundswell off the southwest has proper heft to it.
The standout is Friday morning, the 28th of August. The sea glassed off with a light off-shore breeze, and you’ve got a solid 5ft of south-west groundswell pushing in with a 16-second period. The energy is strong, and the conditions are clean. This is experienced surfer territory—too big for beginners, and with that period, the reef will be lining up some proper walls. Be aware it’s inconsistent and can get a crowd at times, so get in early.
The next real highlight arrives on Monday the 31st of August. Monday morning kicks off with the same off-shore vibe and even a bit more size at 6ft, with a long 17-second period from the SW. Clean again, with light airs. Monday afternoon holds at 5ft with a cross-off breeze, also excellent. That Monday window is your other best chance.
After that, conditions get mixed again. There's a decent slot on the 1st of September (Tuesday afternoon) with clean 4ft surf and good vibes, but it's not a classic. The end of the first week of September sees a big blow-up, with howling winds and lumpy, dangerous conditions—a solid 7ft of SW swell on Saturday the 5th, but with a near gale making it a mess. That's kite-surfing weather, not surfing. The following Monday the 7th of September and Tuesday the 8th show plenty of size—over 7ft—but the winds chop it up, and it’s for experts only if anyone bothers. The final morning on Wednesday the 9th of September (5ft with a clean off-shore) might offer a last clean window, but it's the Friday 28th and Monday 31st that are the ones to circle.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Warm (max 24°C on Thu afternoon, min 11°C on Tue night). Winds increasing (light winds from the E on Tue night, fresh winds from the N by Thu morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Thu night, min 17°C on Fri morning). Wind will be generally light. | ||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||||
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 13 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 19 | SW 17 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 21 | SW 19 | SW 19 | SW 18 |
Wave Graph  | |||||||||||||||||||
 kJ | 1144 | 1832 | 1155 | 656 | 431 | 265 | 297 | 407 | 614 | 1757 | 1144 | 906 | 412 | 288 | 208 | 160 | 236 | 701 | 2055 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-off | cross | cross | cross | cross | cross | cross | cross-off | cross-on | cross-off | cross-off | cross-off | off | cross-on | cross | off |
High Tide | 00:18AM0.68m | 11:50AM1.19m | 00:13AM0.78m | 12:06PM1.30m | 00:22AM0.89m | 12:24PM1.38m | 00:36AM1.00m | 12:43PM1.41m | 00:53AM1.09m | 1:03PM1.40m | 1:13AM1.18m | 1:22PM1.34m | 1:34AM1.23m | ||||||
Low Tide | 5:15AM0.35m | 6:35PM0.15m | 5:35AM0.21m | 6:40PM0.08m | 5:57AM0.09m | 6:51PM0.02m | 6:21AM0.00m | 7:04PM-0.02m | 6:45AM-0.05m | 7:18PM-0.05m | 7:10AM-0.06m | 7:32PM-0.05m | |||||||
 |  | |  | | | | |  |  |  | |  | | | | | | | |
 | — | 7:03 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 6:58 | — | — | 6:58 | — | — |
 | 6:15 | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 13 | 13 | 16 | 20 | 19 | 21 | 24 | 23 | 18 | 18 | 20 | 21 | 22 | 19 | 18 | 18 | 17 |
Feels °C | 8 | 10 | 9 | 12 | 12 | 16 | 14 | 13 | 18 | 17 | 16 | 15 | 15 | 16 | 17 | 15 | 13 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | — | — | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 15 | SW 17 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 19 | SW 18 |
| kJ | — | — | 1155 | 656 | 431 | 265 | 297 | 407 | 492 | 1757 | 1144 | 906 | 412 | 288 | 208 | 132 | 116 | 701 | 2055 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SW 16 | SW 23 | SW 20 | SW 19 | — | — | — | — | SW 23 | SW 20 | SW 21 | SW 19 | SW 12 | — |
| kJ | — | — | — | — | — | 90 | 21 | 251 | 614 | — | — | — | — | 21 | 15 | 160 | 236 | 86 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 24 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 22 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 13 | SW 15 | SW 14 | — | NE 3 | — | NE 2 | N 4 | NNW 4 | NNE 2 | — | — | ESE 3 | ESE 4 | ESE 4 | SE 3 | NE 2 | — | — |
| kJ | 1144 | 1832 | 52 | — | 2 | — | 1 | 20 | 5 | 1 | — | — | 4 | 6 | 1 | 6 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 632 | 1032 | 552 | 0 | 0 | 0 | 0 | 401 | 0 | 287 | 0 | 0 | 0 | 0 | 0 | 0 | 132 | 0 | 0 |
Best forecast wave conditions in Nullarbor | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Cunns Surf forecast
The above surf forecast table for Cunns provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cunns can be found by selecting the local surf guide option on the grey menu. Our Cunns 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 (Cunns) 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 Cunns 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 Cunns, camping, hotels and holiday cottages in Nullarbor, consider staying in Thevenard which is 64 km (40 miles) away.
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