
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, 6PM (local time) - 8ft (2.4m), 17s period, SSW swell with 3,393 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 2.4m 17s and forecast to arrive on Wednesday (Sep 09) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Wednesday (Sep 09) at 9PM.
| 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 | 6PM (Wed 9th Sep) | 8ft (2.4m) 17s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on the table for this stretch of coast.
Alright, we’ll be focusing on Cunns, a reef break that’s exposed to the south-west swell and needs an ESE wind to be clean. It’s an advanced wave, no doubt about it, and it’s inconsistent, so when it fires, you’ve gotta be ready. The water temp is sitting at 61°F, which is about 0.5°F above normal, so pretty much what you’d expect for this time of year – nothing wild.
The early part of the outlook is a bit of a grind. Wednesday the 9th has some size, with waves around 6ft to 8ft, but the wind is howling at 25 mph, and while it’s offshore on the morning, it’s a strong breeze that makes paddling into these things a real mission. The afternoon turns cross-off but still messy. Thursday the 10th is cleaner, with a fresh breeze and 6ft to 6ft waves from the SW, but the scores are low, and it’s just not coming together. Friday the 11th drops off to 4ft, and the energy is weak (707), so that’s a skippers’ day. Saturday the 12th and Sunday the 13th are basically write-offs with onshore slop, so don’t bother.
There’s a bit of a lull through Monday the 14th, with only 3ft on offer, but the wind is light and offshore, so if you’re rusty and just want to get wet, it’s clean. Then Tuesday the 15th starts to show some promise. We’ve got 5ft in the morning with a moderate offshore breeze, and the water is clean. The combined energy is moderate (1018), and the period is a solid 14 seconds. That’s a proper groundswell, and it’ll be lining up nicely on the reef for the experienced crew. Wednesday the 16th afternoon is a real standout – the wind drops to nearly nothing, just 3 mph from the ESE, and the swell is 5ft with a 16-second period. That’s glassy, that’s clean, and the energy is strong (1379). This is the best early call.
Now, there’s a rough patch from Thursday the 17th through to Sunday the 20th. The wind is messy, cross-on, and choppy, with a couple of days of 25 mph onshore junk. Sunday the 20th has 8ft of slop, but it’s rain-showers and strong cross-onshore wind – that’s a kite-surfing day, not a paddle-surfing day.
But then, hold onto your board. Monday the 21st September is the absolute standout. The morning delivers 8ft of SW groundswell, with a 18-second period – that’s a very long period, meaning it’s gonna be powerful and better at this reef than a beach break. The wind is a gentle offshore from the ESE, just 9 mph, so the face will be clean as a whistle. The energy is massive (3273). This is an expert-only wave – over 8ft, it’s for the big dogs. The crowds are only “sometimes” an issue here, but on a day like this, expect a few locals to be out. The swell direction is straight from the optimum SW, so it’s gonna be a proper session.
The following week has more action. Tuesday the 22nd morning is another clean one with 5ft and offshore wind, and Wednesday the 23rd keeps 6ft to 8ft rolling, but the wind is more cross-off. Then, Thursday the 24th September – this is the big one. The morning has 10ft of SW swell at 17 seconds, with a moderate offshore wind. The energy is off the charts at 9201. That’s exceptional, but it’s for experts only. If you’re not comfortable in heavy reef slabs, stay on the sand. The afternoon drops to 8ft, still clean, but the morning is the session everyone will be talking about.
So, if you’re picking the best of the bunch, it’s Monday the 21st morning for the perfect mix of power and clean conditions, and Thursday the 24th morning for the absolute biggest, heaviest, most memorable swell of the window. Both are promising, but the closer one (21st) is a more reliable bet.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Fri afternoon, min 9°C on Wed night). Winds decreasing (strong winds from the ESE on Wed morning, light winds from the ENE by Fri afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sat afternoon, min 12°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 19 | SSW 18 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 17 | SW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 14 | SW 14 | SW 14 |
Wave Graph | |||||||||||||||||||||
2367 | 3304 | 2480 | 1571 | 1412 | 856 | 685 | 773 | 834 | 751 | 474 | 307 | 508 | 416 | 262 | 241 | 238 | 211 | 1018 | 1236 | 886 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-on | cross-off | cross-off | off | cross-off | off | off | cross-off | off |
High Tide | 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 | 1:19PM1.09m | 1:48AM1.30m | |||||||
Low Tide | 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 | 7:37AM0.10m | 7:23PM-0.08m | ||||||||
6:46 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | |
— | 6:24 | — | — | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:28 | — | — | 6:29 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 13 | 14 | 17 | 18 | 19 | 21 | 20 | 24 | 26 | 26 | 21 | 18 | 16 | 17 | 17 | 14 | 17 | 17 | 18 |
Feels °C | 5 | 6 | 5 | 8 | 10 | 13 | 14 | 16 | 15 | 17 | 20 | 21 | 17 | 15 | 14 | 15 | 13 | 11 | 13 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 19 | SSW 18 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 17 | SW 16 | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 14 | SW 14 | SW 14 |
2367 | 3304 | 2480 | 1571 | 1412 | 856 | 685 | 773 | 834 | 751 | 474 | 248 | 508 | 416 | 262 | 241 | 238 | 205 | 1018 | 1236 | 886 | |
Swell 2 Height (m) Direction Period (s) | S 8 | — | — | — | SW 26 | SW 25 | SW 24 | — | — | SW 18 | SW 20 | SW 18 | — | S 10 | SW 4 | SW 19 | SW 18 | SW 16 | — | — | S 6 |
1 | — | — | — | 26 | 25 | 22 | — | — | 392 | 66 | 307 | — | 2 | 2 | 57 | 111 | 211 | — | — | 1 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 4 | SW 18 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 194 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 8 | S 18 | E 4 | E 4 | ESE 2 | E 3 | ENE 3 | — | — | NNE 3 | N 3 | NNE 3 | NW 4 | SW 16 | — | — | S 3 | SSE 4 | SE 5 | SSW 14 | SSE 5 |
280 | 98 | 11 | 16 | 1 | 1 | 7 | — | — | 4 | 2 | 3 | 3 | 64 | — | — | 5 | 39 | 37 | 67 | 34 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1619 | 1577 | 491 | 491 | 132 | 0 | 132 | 0 | 0 | 178 | 178 | 401 | 649 | 491 | 0 | 0 | 1236 | 0 | 0 | 287 | 0 |
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.










