
Surf Forecasts:
Cunns surf forecast from 10 Sep 2026:
- Best quality surf: Thursday 10 Sep, 6PM (local time) - 5ft (1.6m), 16s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 9AM (local time) - 6ft (1.8m), 16s period, SW swell with 1,664 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 6PM (local time) - 5ft (1.6m), 16s period with SSW 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 1.8m 16s and forecast to arrive on Wednesday (Sep 16) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Tuesday (Sep 15) at 6PM.
| 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 | 9AM (Wed 16th Sep) | 6ft (1.8m) 16s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s get into it. We’ve got a solid 16-day window, but it’s not a straight shot of glory. The first few days are a bit of a tease, with some real quality lurking in the back half of the run.
The main event is definitely Cunns, a solid reef break. It’s an exposed spot that loves a good SW swell, and that’s exactly what we’re getting. The water temp is sitting at 60°, which is about average for this time of year, so no surprises there.
The forecast kicks off on Thursday, the 10th. We’ve got a 6ft SW swell rolling in with a 16-second period, which is a proper long-period groundswell. That’s some serious energy (1571), but the wind is a cross-off from the east at 19 mph. It’s clean, but it’s a bit of a battle to get the tide right. Thursday afternoon cleans up nicely with a 6ft SSW swell and a solid offshore breeze. It’s a better bet, but still a bit marginal.
Friday the 11th is where it starts to get interesting. The swell drops a touch to 4ft, but the wind goes glassy on Friday afternoon. A NNE breeze at just 3 mph, dead flat water, and a 4ft SW groundswell with a 15-second period. That’s the kind of afternoon you wait for. It’s clean, it’s smooth, and the setup is promising.
Saturday the 12th is a write-off. The wind swings around and gets messy, with a cross-on breeze making things choppy. The swell is small and the energy is weak. Skip it. Sunday is similar, with poor conditions and a dropping swell.
Monday the 14th brings a little hope. A 3ft SW swell and a light cross-off breeze from the south. Clean waves, but waist-high at best. It’s a fun little session if you’re desperate.
Now, here’s where it gets good. Tuesday the 15th is a standout. The swell jumps back up to 5ft from the SW, with a 15-second period, and the wind is off– strong offshore from the ESE at 16 mph. The energy is solid (1124), and the conditions are clean. This is a proper session for experienced surfers. The waves will have some punch.
Wednesday the 16th is a close second. The swell holds at 5ft, but the period stretches to 16 seconds, and the wind is a gentle cross-off. The afternoon session is absolutely dialed, with the forecast calling it excellent for experienced surfers. The energy is strong (1265), and the waves will be organised and powerful.
Thursday the 17th is a bit of a letdown. The wind is messy again, but a glass-off late in the afternoon with a 4ft SW swell and a 14-second period. It’s a small window of clean waves, but it’s worth a look if you’re free.
The weekend blows out again. Friday the 18th and Saturday the 19th are dominated by cross-on winds and choppy conditions. The swell drops to almost nothing. A real lull.
Then the second week kicks in with a bang. Sunday the 20th starts to build, but it’s Monday the 21st that’s the real gem. The swell jumps to 7ft from the SW, with a 16-second period, and the wind is a strong offshore from the SE at 16 mph. The energy is massive (1847), and it’s clean. This is a big, powerful groundswell for experienced surfers only. The waves will be serious, with long lulls between sets.
Tuesday the 22nd is even bigger. A 7ft SW swell with a 16-second period, and again, offshore winds from the ESE at 12 mph. The energy is through the roof (2384). This is a proper, heavy swell. Not for the faint-hearted.
Wednesday the 23rd is the peak of the run. A 8ft SW swell with a 14-second period, and a fresh offshore breeze from the ESE at 19 mph. The energy is the highest we’ve seen (3074). This is a serious, powerful swell with strong winds. Only for experts.
The rest of the week drops off a bit. Thursday the 24th is still decent, with a 6ft SW swell and clean conditions. But Friday the 25th looks like a mess. A 7ft SW swell with a 19-second period is a very long-period groundswell, but the wind is a strong cross-shore from the NNE at 28 mph, making it choppy and lumpy. That’s a write-off.
So, the best of the lot? Tuesday the 21st and Wednesday the 23rd are the true standouts. Big, powerful, clean waves with strong offshore winds. But remember, this is an inconsistent spot, so when it fires, it fires. The crowds are possible, so get there early.
Overall, there’s a gap of a few days of poor surf in the middle, but the long-range promise is real. Keep an eye on the swell, because that second week looks like it could produce some serious sessions.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat afternoon, min 11°C on Thu morning). Winds decreasing (fresh winds from the E on Thu morning, calm by Fri afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sun morning, min 13°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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 | SSW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 17 | SW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 12 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||||
1571 | 1322 | 868 | 685 | 666 | 746 | 742 | 474 | 307 | 508 | 416 | 262 | 331 | 161 | 567 | 1185 | 1108 | 1108 | 1664 | 1305 | 859 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | cross-on | cross-off | cross | cross-on | cross | cross-off | cross | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | off | cross-off |
High Tide | 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 | 1:29PM1.04m | 2:06AM1.24m | |||||||
Low Tide | 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 | 7:53AM0.17m | 7:36PM-0.05m | ||||||||
6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | |
— | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:28 | — | — | 6:29 | — | — | 6:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 19 | 19 | 18 | 18 | 19 | 25 | 27 | 27 | 19 | 17 | 15 | 19 | 17 | 15 | 17 | 18 | 15 | 18 | 20 | 20 |
Feels °C | 9 | 13 | 14 | 13 | 15 | 13 | 18 | 21 | 22 | 17 | 14 | 12 | 16 | 13 | 12 | 12 | 13 | 11 | 15 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SSW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 17 | SW 16 | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 12 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 15 |
1571 | 1322 | 868 | 685 | 666 | 746 | 742 | 474 | 248 | 508 | 416 | 262 | 331 | 161 | 567 | 1185 | 1108 | 1108 | 1664 | 1305 | 859 | |
Swell 2 Height (m) Direction Period (s) | — | SW 26 | SW 25 | SW 24 | — | — | SW 18 | SW 20 | SW 18 | NW 4 | — | SW 4 | SW 19 | SW 14 | — | — | — | — | — | — | — |
— | 26 | 25 | 22 | — | — | 392 | 65 | 307 | 4 | — | 4 | 57 | 97 | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NNE 3 | — | — | SSW 4 | SW 18 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | 2 | — | — | 1 | 109 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 4 | ESE 2 | E 3 | ENE 2 | — | — | NNE 3 | NNW 4 | N 3 | NW 4 | SW 3 | SW 4 | — | SSE 3 | SE 4 | SE 4 | SSE 5 | SE 5 | — | SE 4 | E 3 |
21 | 1 | 5 | 1 | — | — | 4 | 4 | 5 | 5 | 3 | 1 | — | 1 | 18 | 23 | 27 | 41 | — | 6 | 6 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 491 | 132 | 0 | 0 | 0 | 0 | 0 | 146 | 401 | 649 | 648 | 632 | 0 | 632 | 0 | 132 | 491 | 0 | 0 | 0 | 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.










