Surf Forecasts:
Cunns surf forecast from 15 Aug 2026:
- Best quality surf: Saturday 15 Aug, 6PM (local time) - 5ft (1.6m), 15s period, SW swell with offshore winds.
- Most powerful swell: Friday 21 Aug, 3PM (local time) - 7ft (2.2m), 16s period, SW swell with 2,384 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 6PM (local time) - 5ft (1.6m), 15s 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 Saturday (Aug 15) at 6PM. The primary swell is predicted to be 1.6m and 15s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cunns in the next 16 days are 2.2m 16s and forecast to arrive on Friday (Aug 21) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Aug 17) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 15th Aug) | 5ft (1.6m) 15s |
| Best Surf | 6PM (Sat 15th Aug) | 5ft (1.6m) 15s |
| Most Powerful | 3PM (Fri 21st Aug) | 7ft (2.2m) 16s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Hey there, fellow surfers, Rusty here. We’ve got a pretty epic two-week forecast on the cards for Cunns, but it's going to take some patience. This reef is for the advanced crew only, and the ocean is going to serve up some serious power.
The water temp is sitting at 59°, which is right where it should be for the time of year. Not a shock.
The action starts hot and heavy on Saturday, August 15th. There’s a huge 1643 combined energy reading on a solid 6ft southwest groundswell with a super long 16-second period. The morning has a moderate offshore easterly breeze keeping it clean, and the afternoon glassed off even more with a light southeasterly. This is expert-level, heavy, and scary fun. Saturday the 15th is the top pick for the whole run.
Sunday the 16th tones it down a bit to a 4ft to 5ft southwest swell with a 14-second period. The combined energy drops to 746 but it’s still a beautiful wave. The wind stays offshore and the surf is clean and very good. A great day for a confident surfer.
Monday the 17th gets a little smaller and more marginal with cross-offshore winds. It's surfable, but not the peak. Then we hit a poor spell. From Tuesday the 18th through Wednesday the 19th, the wind gets ugly, going onshore and strong. The waves are there but it’s a lumpy, choppy mess.
Thursday the 20th morning is a nice little reset with clean conditions and a 4ft swell.
Now, get ready for another massive window. Saturday, August 22nd sees a big 7ft southwest swell with a 15-second period and a combined energy of 2075. The morning wind is a gentle offshore breeze. This is serious, powerful juice for the experts only.
And then, the potential dark horse: Monday, August 24th. A 8ft southwest swell with a monster 18-second groundswell period. The combined energy is huge at 3488. The morning is a bit cross-shore, but by the afternoon it goes completely glassy. For a reef that thrives on direction and power, this is the session of the month if you can handle consequence. It's very big, so don't even think about it unless you’re an expert.
From Tuesday the 25th onward, it’s a rough patch. Strong onshore winds, gales, and blown-out conditions dominate through the end of the forecast on the 30th. There’s a small window on Saturday the 29th with a 5ft southwest swell, but the wind is onshore and the quality will be poor.
Best bets: Saturday the 15th and Saturday the 22nd are your golden tickets. Sunday the 16th and Thursday the 20th morning are good for a cleaner, less intense paddle. Keep an eye on Monday the 24th if you're fearless.
Stay sharp, and don't get caught inside.
- Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Very mild (max 16°C on Sat afternoon, min 13°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Tue afternoon, min 12°C on Thu morning). Winds decreasing (strong winds from the WSW on Tue afternoon, calm by Thu night). | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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 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 | SW 15 | SW 15 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
1643 | 1265 | 836 | 746 | 590 | 428 | 314 | 619 | 520 | 686 | 482 | 443 | 453 | 370 | 424 | 628 | 719 | 1179 | 1643 | 2384 | 1532 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross | cross-on | on | cross-on | cross-on | cross | cross-off | cross | glassy | on | cross | cross-off |
High Tide | 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 | 1:48PM0.84m | ||||||||
Low Tide | 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 | 8:44AM0.56m | 8:33PM0.21m | ||||||||
7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | |
— | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | |
mm | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 19 | 20 | 14 | 15 | 14 | 14 | 14 | 14 | 13 | 15 | 15 | 13 |
Feels °C | 10 | 14 | 12 | 13 | 12 | 10 | 14 | 12 | 11 | 10 | 13 | 10 | 11 | 10 | 12 | 12 | 11 | 10 | 10 | 10 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 13 | SW 16 | SW 14 | SW 18 | SW 17 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 |
1643 | 1265 | 836 | 746 | 590 | 428 | 299 | 619 | 346 | 686 | 482 | 443 | 453 | 370 | 424 | 628 | 719 | 1179 | 1643 | 2384 | 1532 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 16 | SW 22 | SW 19 | — | — | — | W 4 | WSW 5 | SW 18 | — | — | SW 20 | — | — | — |
— | — | — | — | — | — | 314 | 163 | 520 | — | — | — | 9 | 10 | 201 | — | — | 137 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 26 | SW 23 | — | SE 4 | — | — | — | — | SW 20 | SW 5 | — | — | — | — | — | — |
— | — | — | — | — | 13 | 86 | — | 2 | — | — | — | — | 99 | 7 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SE 3 | SE 4 | — | — | — | NNE 4 | NNW 4 | NW 4 | SW 15 | — | SSW 4 | SW 16 | SW 16 | — | — | SW 16 | SSW 16 |
— | — | — | — | 2 | 12 | — | — | — | 10 | 9 | 13 | 60 | — | 2 | 63 | 64 | — | — | 1438 | 98 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 153 | 0 | 651 | 564 | 564 | 648 | 1217 | 648 | 0 | 500 | 0 | 1227 | 1236 | 940 |
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.











