Surf Forecasts:
Cunns surf forecast from 1 Sep 2026:
- Best quality surf: Thursday 3 Sep, 6PM (local time) - 6ft (1.9m), 14s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 12AM (local time) - 10ft (3.0m), 18s period, SW swell with 4,781 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 6PM (local time) - 6ft (1.9m), 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 Thursday (Sep 03) at 6PM. The primary swell is predicted to be 1.9m and 14s 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 3.0m 18s and forecast to arrive on Tuesday (Sep 08) at 12AM. 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 Sunday (Sep 06) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 3rd Sep) | 6ft (1.9m) 14s |
| Best Surf | 6PM (Thu 3rd Sep) | 6ft (1.9m) 14s |
| Most Powerful | 12AM (Tue 8th Sep) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Howdy, Rusty here. This is all about Cunns, a reef that doesn’t break often but when it does, it’s something else. The water temp sits around 60 °F, dead normal for this time of year.
Heads up, the first few days are rough. Tuesday 1st and Wednesday 2nd are blown out with cross-onshore wind and chop. Don’t bother.
Thursday 3rd afternoon improves: a light cross-off breeze, 6 ft of SW groundswell with a 14-second period, combined energy moderate (1220). It’s not perfect but it’s clean enough for a reef wave.
Then things deteriorate. Friday 4th to Sunday 6th have strong winds and messy seas, with swell building to 7 ft but accompanied by nasty winds.
Monday 7th is big: 10 ft of SW swell, strong energy (3781), 14-second period. The morning has a cross-shore, but the afternoon is a gale. If you’re an expert and brave, the early window could be raw and powerful.
Wednesday 9th afternoon is the real standout: 8 ft of SW swell, 17-second period—very long period—with clean offshores. That reef will be firing with lined-up, powerful waves.
Thursday 10th morning is also excellent: 6 ft SW, 15-second period, clean wind. Combined energy moderate-strong at 1418.
Friday 11th is a treat: morning 5 ft with 17-second period and light offshore; afternoon goes glassy with 5 ft. That’s a rare combination.
After that, the swell fades. Saturday 12th offers a clean 3–4 ft afternoon, and Wednesday 16th wraps up with glassy 3–4 ft. Good for smaller boards.
The best of the bunch: Wednesday 9th afternoon and Friday 11th afternoon—both glassy or clean, long-period groundswell, and at Cunns that means quality reef waves. Crowds are possible but not always. With 8 ft surf on the 9th, that’s expert-only. Beginners should hit the 16th.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Warm (max 23°C on Tue morning, min 13°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Sun afternoon. Warm (max 22°C on Sun morning, min 12°C on Sun night). Winds increasing (light winds from the SSE on Sat afternoon, strong winds from the NE by Sun morning). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 15 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 15 | SW 15 | SW 15 | W 14 | WSW 12 | SW 14 | SW 13 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 692 | 355 | 1014 | 783 | 1212 | 1171 | 1033 | 1220 | 1808 | 1684 | 1589 | 1460 | 1393 | 2010 | 2150 | 1108 | 1922 | 2633 | 3781 | 3113 | 4781 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | on | cross-off | cross | cross | cross |
High Tide | 1:54PM1.12m | 2:17AM1.24m | 2:01PM0.98m | 2:38AM1.18m | 1:55PM0.86m | 2:56AM1.07m | 1:20PM0.80m | 3:04AM0.92m | 12:18PM0.85m | 2:38AM0.77m | 11:43AM0.99m | 1:29AM0.68m | 11:44AM1.13m | 00:44AM0.70m | |||||||
Low Tide | 7:57PM-0.01m | 8:24AM0.19m | 8:04PM0.03m | 8:42AM0.36m | 8:05PM0.07m | 8:45AM0.54m | 7:54PM0.11m | 7:58AM0.69m | 7:31PM0.13m | 6:09AM0.69m | 7:06PM0.13m | 5:24AM0.54m | 6:51PM0.12m | ||||||||
 |  |  |  | | | | |  |  | |  | | | |  |  | | | | | |
 | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — |
 | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — |
mm | — | — | — | — | — | — | — | — | 2 | 2 | 1 | — | — | — | — | 1 | 10 | 1 | 9 | 6 | — |
Temp °C | 23 | 18 | 14 | 14 | 14 | 15 | 17 | 16 | 16 | 21 | 20 | 16 | 15 | 15 | 14 | 22 | 15 | 13 | 14 | 14 | 14 |
Feels °C | 17 | 16 | 11 | 8 | 9 | 12 | 14 | 12 | 15 | 16 | 17 | 14 | 13 | 13 | 9 | 18 | 9 | 9 | 4 | 5 | 6 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 16 | SW 16 | — | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | — | SW 14 | SW 15 | SW 15 | SW 15 | — | — | — | — | — |
| kJ | 692 | 355 | 1014 | 783 | — | 1171 | 1033 | 1220 | 1808 | 1684 | 1589 | — | 1393 | 2010 | 2150 | 1108 | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | NE 5 | SW 18 | — | SW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 307 | — | 47 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | SW 17 | — | SW 6 | SW 15 | SW 14 | — | — | ESE 3 | — | SW 15 | SW 15 | SW 15 | SW 15 | — | N 4 | W 14 | WSW 12 | SW 14 | SW 13 | SW 18 |
| kJ | 15 | 103 | — | 2 | 1212 | 54 | — | — | 3 | — | 78 | 1460 | 54 | 55 | — | 38 | 1922 | 2633 | 3781 | 3113 | 4781 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1227 | 510 | 491 | 648 | 1045 | 1217 | 0 | 491 | 0 | 178 | 500 | 1035 | 1638 | 940 | 0 | 497 | 287 | 0 | 243 | 491 | 837 |
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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