
Surf Forecasts:
Cunns surf forecast from 7 Aug 2026:
- Best quality surf: Thursday 13 Aug, 9PM (local time) - 7ft (2.1m), 15s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 12 Aug, 9PM (local time) - 11ft (3.5m), 16s period, SW swell with 6,021 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 9PM (local time) - 7ft (2.1m), 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 Thursday (Aug 13) at 9PM. The primary swell is predicted to be 2.1m and 15s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cunns in the next 16 days are 3.5m 16s and forecast to arrive on Wednesday (Aug 12) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 13th Aug) | 7ft (2.1m) 15s |
| Best Surf | 9PM (Thu 13th Aug) | 7ft (2.1m) 15s |
| Most Powerful | 9PM (Wed 12th Aug) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, this is Rusty checkin' in from the local lineup. Let's get straight into it.
It's gonna be a rough go for a good while here. The first real pulse of swell doesn't show up until well into next week, so you're lookin' at a solid stretch of days with nothing to get excited about. We're talkin' a full week of ugly, blown-out conditions before we get a sniff of anything decent.
The only spot on the radar is Cunns (reef break). It's an advanced, inconsistent reef that's exposed to the open ocean, but it's picky. For the first week, it's a total write-off. Saturday the 8th through to Wednesday the 12th sees a mix of onshore and cross-onshore winds, mostly from the north or west, with speeds from 15 mph up to a howling 37 mph. Swell heights bounce around from 5 ft to 10 ft, coming from the SW to WSW, but the wave energy is high (967 to 4856) and the period is long, but it's all ruined by the wind. The water temp is sitting about average for this time of year.
Thursday the 13th is a marginal day, with a 8 ft SW swell (3065 energy) and a 7 ft SW swell (2269 energy) in the afternoon, but the wind is either onshore or cross-shore. The real window opens Friday the 14th. That morning is the standout. The wind goes glassy, light from the NW at just 3 mph, and you've got a solid 7 ft SW swell with a long 17-second period, carrying 2867 energy. That's the kind of clean, powerful groundswell that a reef like Cunns can really turn into something special. The afternoon stays clean with a light cross-offshore breeze from the SSE.
Saturday the 15th morning is another gem, with a clean 6 ft SW swell (1654 energy) and a light offshore wind from the ESE. The swell is a bit smaller, but it's still clean and lined up. This is likely the best window of the whole outlook, but remember, Cunns is inconsistent, so you'll be waiting for the sets. The crowds are listed as "sometimes," so you might have a few others in the water, but it won't be a circus.
From Sunday the 16th onward, the swell is on the way down. Sunday morning is 4 ft (598 energy), but it's clean with a cross-offshore breeze. The best of the late period is Monday the 17th afternoon with a 3 ft SW swell (443 energy) and a gentle offshore wind from the east. After that, it's back into the wind and chop from Tuesday the 18th onward, with the energy dropping and the forecast looking grim again through the 23rd.
So, if you're keen, keep your eyes on that Friday the 14th and Saturday the 15th. That's your window.
- Rusty
Short Range ForecastHeavy rain (total 35mm), heaviest during Sun morning. Very mild (max 17°C on Fri night, min 10°C on Sat night). Winds increasing (light winds from the NE on Fri night, gales from the W by Sun afternoon). | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Tue afternoon. Very mild (max 15°C on Wed morning, min 10°C on Tue afternoon). Winds decreasing (gales from the WNW on Tue morning, light winds from the SW by Thu afternoon). | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 | WSW 9 | WSW 11 | SW 13 | SW 17 | SW 16 | SW 16 | SW 14 | WSW 8 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||
1137 | 964 | 856 | 676 | 1364 | 2100 | 3041 | 4103 | 2645 | 1384 | 598 | 886 | 4746 | 4856 | 4579 | 5267 | 3001 | 2208 | 1638 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | cross | on |
High Tide | 11:17AM0.96m | 2:07AM0.58m | 11:38AM1.14m | 1:00AM0.58m | 12:03PM1.28m | 00:48AM0.63m | 12:27PM1.36m | 00:49AM0.71m | 12:48PM1.38m | 00:57AM0.80m | 1:06PM1.36m | 1:08AM0.91m | |||||||
Low Tide | 7:25PM0.20m | 4:19AM0.56m | 7:12PM0.14m | 5:06AM0.41m | 7:16PM0.11m | 5:37AM0.27m | 7:23PM0.11m | 6:04AM0.16m | 7:30PM0.12m | 6:29AM0.08m | 7:34PM0.13m | ||||||||
— | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | |
6:05 | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | |
mm | 1 | 3 | 5 | 5 | 9 | 5 | 7 | — | — | — | 1 | 6 | 3 | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 15 | 13 | 12 | 13 | 13 | 14 | 14 | 14 | 11 | 13 | 15 | 15 | 15 | 15 | 15 | 15 |
Feels °C | 12 | 12 | 12 | 10 | 2 | 0 | 1 | 7 | 9 | 8 | 4 | -2 | 4 | 8 | 9 | 12 | 12 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 14 | — | — | — | — | SW 16 | SW 16 | SW 14 | — | — | — | — | SW 16 | SW 16 | SW 15 | SW 15 |
1137 | 964 | 856 | 676 | — | — | — | — | 2645 | 1384 | 598 | — | — | — | — | 5267 | 3001 | 2208 | 1638 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | N 3 | NNW 3 | NW 4 | NW 4 | WSW 9 | WSW 11 | SW 13 | SW 17 | SW 16 | NNW 4 | WNW 5 | WSW 8 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 |
5 | 3 | 12 | 37 | 1364 | 2100 | 3041 | 4103 | 42 | 8 | 90 | 886 | 4746 | 4856 | 4579 | 3212 | 64 | 61 | 54 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 401 | 401 | 564 | 564 | 564 | 564 | 878 | 1093 | 1242 | 648 | 1149 | 1232 | 1052 | 1229 | 1344 | 1048 | 0 | 1219 | 178 |
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.











