Surf Forecasts:
Cunns surf forecast from 8 Sep 2026:
- Best quality surf: Thursday 10 Sep, 6PM (local time) - 5ft (1.6m), 16s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 9 Sep, 3PM (local time) - 7.5ft (2.3m), 18s period, SSW swell with 3,304 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 6PM (local time) - 5ft (1.6m), 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 Thursday (Sep 10) at 6PM. The primary swell is predicted to be 1.6m and 16s period with a secondary swell of 0.1m and 26s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cunns in the next 16 days are 2.3m 18s and forecast to arrive on Wednesday (Sep 09) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Wednesday (Sep 09) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 10th Sep) | 5ft (1.6m) 16s |
| Best Surf | 6PM (Thu 10th Sep) | 5ft (1.6m) 16s |
| Most Powerful | 3PM (Wed 9th Sep) | 7.5ft (2.3m) 18s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, here’s the lowdown on Cunns in imperial. This is a reef break that lives on SW groundswell, and it’s not for the faint of heart – advanced only, and it’s inconsistent to boot. You have to wait for the right moment.
Water temp sits at 60°F, which is dead on normal for this time of year. Nothing weird there.
The absolute standout session is well out in the second week. Monday the 21st of September afternoon: a solid 8ft of SW swell with a very stretched 16-second interval. The combined energy is a massive 4631 (strong to very strong), and the wind goes glassy – dead flat. That’s a once-in-a-forecast session for a wave-hungry reef, but it’s strictly for the experienced crowd.
Before that, Tuesday the 8th of September morning gives you 5ft of SW groundswell from 17 seconds with a gentle offshore breeze keeping things clean. Moderate energy (1388). It’s a solid, clean start for those who know the break.
Tuesday afternoon the 8th stays at 5ft but goes cross-off. Still clean, but lacks that same spark.
Wednesday the 9th pushes up to around 6ft, but winds scream out of the ESE at 25 mph – strong offshore, clean but brutal to paddle into. Energy jumps to 2525, but it’s a fight, not a flow.
Thursday the 10th afternoon is back to 5ft with a moderate offshore E breeze. Clean and workable. Moderate energy (1310).
Friday the 12th and Saturday the 13th drop into the doldrums: tiny wave heights, poor wind, lumpy chop. Hard pass.
There’s a gap from Sunday the 14th morning through Tuesday the 16th morning where the swell fades to knee or waist-high and the winds don’t cooperate. Wednesday the 16th afternoon brings a rebound: 5ft with a gentle offshore, clean.
Then we hit the big one: Monday the 21st of September afternoon. That glassy, 8ft session is the winner.
Tuesday the 22nd and Wednesday the 23rd have size – 6ft to 8ft – but winds are bad: cross and cross-onshore, lumpy. The 23rd afternoon does clean up with a fresh cross-off from the SSE, but it’s not the same as the glass.
So, Cunns is a picky, expert reef. The clear highlight is Monday the 21st of September afternoon. If you’re in the know, mark it down.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue afternoon. Warm (max 20°C on Fri morning, min 10°C on Wed night). Winds decreasing (strong winds from the ESE on Wed morning, light winds from the NE by Fri morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Sun morning, min 16°C on Sun night). Winds decreasing (fresh winds from the NNE on Sat morning, light winds from the E by Sun night). | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 19 | SSW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 18 | SW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 18 | SW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1261 | 1096 | 2367 | 3304 | 2228 | 1571 | 1412 | 856 | 606 | 674 | 643 | 321 | 480 | 370 | 574 | 701 | 258 | 160 | 194 | 553 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-off | cross-off | cross-off | off |
High Tide | 00:28AM0.79m | 12:11PM1.28m | 00:26AM0.90m | 12:24PM1.29m | 00:33AM1.03m | 12:37PM1.26m | 00:44AM1.14m | 12:48PM1.22m | 00:58AM1.24m | 12:58PM1.18m | 1:14AM1.30m | 1:09PM1.14m | 1:31AM1.32m | |||||||
Low Tide | 6:45PM0.11m | 5:45AM0.23m | 6:43PM0.10m | 6:04AM0.12m | 6:44PM0.07m | 6:23AM0.05m | 6:47PM0.04m | 6:43AM0.02m | 6:53PM-0.01m | 7:01AM0.02m | 7:01PM-0.05m | 7:19AM0.05m | 7:11PM-0.08m | |||||||
 |  |  | |  |  | | | | |  |  | | | | | | | | | |
 | — | — | 6:46 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — |
 | 6:24 | — | — | 6:24 | — | — | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:28 | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 13 | 14 | 14 | 15 | 19 | 19 | 20 | 23 | 22 | 24 | 27 | 26 | 28 | 20 | 17 | 18 | 17 | 15 |
Feels °C | 10 | 8 | 5 | 6 | 5 | 8 | 13 | 13 | 15 | 18 | 16 | 16 | 21 | 21 | 23 | 16 | 14 | 14 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 19 | SSW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 16 |
| kJ | 1261 | 1096 | 2367 | 3304 | 2228 | 1571 | 1412 | 856 | 606 | 674 | 643 | 305 | 480 | 370 | 574 | 701 | 258 | 160 | 160 | 553 |
Swell 2 Height (m) Direction Period (s) | — | — | S 7 | — | — | — | SW 26 | SW 25 | SW 24 | — | — | SW 18 | — | SW 14 | — | — | — | SW 4 | SW 18 | — |
| kJ | — | — | 1 | — | — | — | 26 | 25 | 22 | — | — | 321 | — | 248 | — | — | — | 3 | 109 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 19 | SW 18 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 56 | 194 | — |
Wind waves Height (m) Direction Period (s) | — | S 6 | SSE 7 | ESE 2 | ESE 5 | E 4 | ESE 2 | ENE 3 | ENE 3 | — | ESE 4 | NNE 3 | NNW 4 | N 3 | NNW 4 | SW 16 | SSW 4 | — | S 3 | SE 4 |
| kJ | — | 64 | 188 | 1 | 40 | 21 | 1 | 2 | 4 | — | 3 | 7 | 4 | 5 | 8 | 565 | 5 | — | 4 | 16 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 1052 | 491 | 1619 | 1577 | 491 | 302 | 0 | 0 | 0 | 0 | 0 | 401 | 178 | 401 | 564 | 510 | 0 | 0 | 1219 |
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)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cunns surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest