Surf Forecasts:
Cunns surf forecast from 26 Aug 2026:
- Best quality surf: Sunday 30 Aug, 6PM (local time) - 4.5ft (1.3m), 18s period, SW swell with offshore winds.
- Most powerful swell: Monday 31 Aug, 9AM (local time) - 5ft (1.6m), 19s period, SW swell with 1,695 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 6PM (local time) - 4.5ft (1.3m), 16s 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 Friday (Aug 28) at 6PM. The primary swell is predicted to be 1.3m and 16s 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 1.6m 19s and forecast to arrive on Monday (Aug 31) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Aug 29) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 28th Aug) | 4.5ft (1.3m) 16s |
| Best Surf | 6PM (Sun 30th Aug) | 4.5ft (1.3m) 18s |
| Most Powerful | 9AM (Mon 31st Aug) | 5ft (1.6m) 19s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’m not gonna sugarcoat it—the first few days of this run are a bit of a write-off. Thursday the 27th and Friday the 28th are a mess: cross-shore and cross-onshore winds, lumpy, choppy, and the surf quality is just poor. We’ve got a moderate combined wave energy (677) on Thursday morning, but it’s not doing us any favours. You’re better off staying home or finding something else to do.
Then we hit a bit of a sweet spot. Saturday the 29th and Sunday the 30th, things clean right up. The swell drops off a touch, but what we’ve got is clean. Saturday morning sees a 3ft SW swell with a gentle cross-off breeze and a combined energy of 403—nothing huge, but it’s surfable and clean. Saturday afternoon gets even better with a 3ft SW swell, offshore wind from the SE, and clean conditions. Then Sunday afternoon is the standout of this first week: 4ft SW swell, 19-second period, clean as a whistle, with a combined energy of 887. That’s a long-period groundswell, so it’ll be fat and powerful, especially good for a reef break like Cunns. The water temp is about average for this time of year, so no surprises there.
Monday the 31st sees the swell bump up to 5ft, but the wind swings cross-shore, and it gets a bit messy. Still, the combined energy jumps to 1695, so there’s plenty of push, but the quality is marginal. Tuesday the 1st of September is a total blowout again—fresh cross-onshore winds, lumpy, poor surf. Skip it.
Now, Wednesday the 2nd of September morning is a hidden gem. The wind drops to a slight air from the south, it’s clean, and the swell is 4ft SW with a 15-second period and a combined energy of 697. The forecast says “very good surf conditions,” and I’d agree. Then Thursday the 3rd of September morning is the real deal: glassy conditions, 4ft SW swell, 14-second period, combined energy of 601. That’s as good as it gets for a clean, quiet session. No crowds to worry about here—Cunns is inconsistent, so when it’s on, it’s on, and you’ll have it mostly to yourself.
The second week ramps up in size. Friday the 4th of September afternoon pushes 7ft SW swell, 15-second period, and a combined energy of 2126. The wind is cross-off and clean, but at that size, it’s getting serious. Saturday the 5th of September morning is the standout of the whole run: 5ft SW swell, 14-second period, offshore wind from the SE, and the combined energy is 1121. The forecast calls it “excellent surf conditions for experienced surfers,” and that’s no lie. This is the one to circle on the calendar. Saturday afternoon gets even bigger at 7ft, but the wind is cross-off, still clean, but more for the confident crew.
Sunday the 6th of September is pushing 10ft SW swell, but the wind is cross-on and choppy—that’s big, ugly, and only for the die-hard experts. Monday the 7th of September morning is a cracker: 7ft SW swell, 16-second period, light offshore wind from the ENE, and a combined energy of 2492. Clean, powerful, and solid. Tuesday the 8th of September afternoon is the biggest and best of the long-range: 10ft SW swell, 17-second period, light offshore, and a combined energy of 4533. That’s a massive, long-period groundswell, and it’ll be holding up clean on the reef. For the experts, this is a dream. But it’s far out, so keep an eye on it.
Wednesday the 9th of September is a write-off again—fresh cross-onshore winds, lumpy, poor. Thursday the 10th of September cleans up, with 6ft to 6ft SW swell, cross-off winds, and clean conditions, combined energy up to 2733. Friday the 11th of September is a gentle cross-shore with 6ft SW swell, nothing special but surfable.
If I’m picking one standout, it’s Saturday the 5th of September morning. That’s the sweet spot: decent size, clean offshore wind, and the reef will be firing. For the big-wave crew, Tuesday the 8th of September afternoon is the one to watch.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Thu afternoon, min 17°C on Wed night). Winds decreasing (fresh winds from the N on Thu morning, light winds from the NE by Fri afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Tue afternoon, min 18°C on Mon morning). Winds increasing (light winds from the ENE on Sun morning, fresh winds from the N by Tue morning). | ||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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 14 | SW 19 | SW 17 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 19 | SW 19 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | SW 17 | SW 16 |
Wave Graph | |||||||||||||||||||
297 | 466 | 614 | 1597 | 1144 | 906 | 536 | 382 | 290 | 193 | 236 | 887 | 1050 | 1695 | 1453 | 909 | 635 | 822 | 728 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross-on | cross-on | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross |
High Tide | 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 | 1:40PM1.24m | 1:55AM1.26m | 1:54PM1.12m | 2:17AM1.24m | ||||||
Low Tide | 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 | 7:36AM-0.03m | 7:45PM-0.04m | 8:01AM0.06m | 7:57PM-0.01m | |||||||
— | 7:01 | — | — | 7:01 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | |
6:16 | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 22 | 25 | 24 | 21 | 23 | 23 | 23 | 23 | 20 | 22 | 23 | 20 | 22 | 24 | 23 | 26 | 29 | 20 |
Feels °C | 14 | 16 | 20 | 19 | 17 | 20 | 19 | 19 | 18 | 15 | 18 | 19 | 16 | 17 | 19 | 18 | 18 | 24 | 19 |
Swell 1 Height (m) Direction Period (s) | 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 17 | SW 19 | SW 18 | SW 16 | SW 16 | SW 17 | SW 16 |
297 | 466 | 543 | 1597 | 1144 | 906 | 536 | 382 | 290 | 193 | 175 | 887 | 1050 | 1695 | 1453 | 909 | 635 | 822 | 728 | |
Swell 2 Height (m) Direction Period (s) | SW 23 | SW 20 | SW 19 | — | — | — | W 5 | SW 23 | SW 20 | SW 21 | SW 19 | — | SW 21 | — | — | — | — | — | — |
21 | 198 | 614 | — | — | — | 2 | 21 | 16 | 160 | 236 | — | 162 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 24 | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 22 | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | ENE 3 | N 4 | — | N 3 | — | — | ESE 3 | — | — | SE 4 | — | — | — | — | — | N 3 | NNW 4 | WNW 4 | SSW 4 |
3 | 13 | — | 5 | — | — | 4 | — | — | 10 | — | — | — | — | — | 3 | 15 | 12 | 24 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 401 | 0 | 0 | 178 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1197 | 553 | 510 |
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 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.











