Surf Forecasts:
Cunns surf forecast from 15 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 12PM (local time) - 5.5ft (1.7m), 15s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 22 Sep, 3AM (local time) - 5.5ft (1.7m), 15s period, SW swell with 1,349 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 12PM (local time) - 5.5ft (1.7m), 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 Wednesday (Sep 16) at 12PM. The primary swell is predicted to be 1.7m and 15s 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 1.7m 15s and forecast to arrive on Tuesday (Sep 22) at 3AM. 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 5s period and expected on Tuesday (Sep 15) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 16th Sep) | 5.5ft (1.7m) 15s |
| Best Surf | 12PM (Wed 16th Sep) | 5.5ft (1.7m) 15s |
| Most Powerful | 3AM (Tue 22nd Sep) | 5.5ft (1.7m) 15s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, folks, it’s Rusty here. This is your Cunns outlook, just a one-break story. Let’s get into it.
First off, there’s no surf at all for the first part of the window. We're looking at a gap from now until Tuesday morning, so you’ll be twiddling your thumbs for a bit. The first real chance to paddle out comes Tuesday the 15th of September. It’s not going to be your best day, with swell around 5 ft from the SW, but that offshore wind will keep it clean. Combined swell energy is strong at 1028. The water temp is 61°, about average for this time of year, nothing crazy. This spot is a reef, so it breaks on the shallow stuff.
The standouts here are a few specific days. The first real standout is Tuesday the 22nd of September. The morning session is the pick of the whole forecast. We’ve got a clean 6 ft SW swell with a nice 15-second period and light wind, making for excellent conditions. The combined energy is pumping at 1297. This spot is for advanced surfers only, and it’s inconsistent, so you have to be patient and pick your tides. The water temp will still be sitting right around normal.
A second, later standout is Monday the 28th of September. Another morning session with moderate offshore wind, clean 5 ft SW swell, and that long 15-second period. Combined energy is 1039. Again, this is a reef, so the long period will draw up nice lines, but watch out for it being a little straight at times. If you come here, you might run into a crowd—it’s listed as “sometimes” busy, so you won’t have it to yourself.
The biggest event comes right at the tail end of the window. On Saturday the 26th of September, the swell jumps to 10 ft. That’s expert-only territory. Huge, clean lines from the SW with a very long 19-second period. Combined energy is a massive 5575, which is a ton of water moving. This is for very experienced surfers only. Keep an eye on it, but don’t take a beginner out there.
Overall, this spot offers a few good windows but is mostly marginal. The days with fresh offshore wind and clean swell are your best bet. For the rest of the gap? A lot of cross-shore and onshore junk, which is better left for the kites.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Thu afternoon, min 8°C on Tue night). Winds decreasing (fresh winds from the SE on Tue night, light winds from the E by Thu afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 32°C on Sat afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the NNW on Sat morning, light winds from the S by Sat night). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 15 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SSW 13 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 17 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1028 | 1092 | 1011 | 1246 | 1306 | 975 | 658 | 485 | 304 | 322 | 215 | 127 | 87 | 83 | 594 | 302 | 318 | 581 | 386 | 330 | 1155 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross-on | cross-off | cross-off | cross-off | cross-off | off | cross-off | off |
High Tide | 1:19PM1.09m | 1:48AM1.30m | 1:29PM1.04m | 2:06AM1.24m | 1:37PM0.97m | 2:22AM1.15m | 1:38PM0.90m | 2:36AM1.02m | 1:21PM0.83m | 2:39AM0.88m | 12:30PM0.81m | 2:04AM0.75m | 11:30AM0.89m | 00:39AM0.70m | |||||||
Low Tide | 7:23PM-0.08m | 7:53AM0.17m | 7:36PM-0.05m | 8:08AM0.26m | 7:47PM0.01m | 8:19AM0.37m | 7:53PM0.09m | 8:21AM0.50m | 7:48PM0.18m | 7:48AM0.62m | 7:19PM0.24m | 6:05AM0.64m | 6:31PM0.25m | ||||||||
 | |  |  | | | | | | | | | | | | | | | | | | |
 | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — |
 | — | 6:29 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 12 | 14 | 16 | 14 | 18 | 21 | 21 | 23 | 27 | 26 | 28 | 32 | 30 | 16 | 15 | 14 | 16 | 16 | 14 |
Feels °C | 8 | 7 | 6 | 8 | 9 | 9 | 14 | 17 | 16 | 15 | 21 | 20 | 18 | 26 | 24 | 13 | 11 | 11 | 13 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SSW 13 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | NW 6 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 16 |
| kJ | 1028 | 1092 | 1011 | 1246 | 1306 | 975 | 658 | 485 | 304 | 322 | 215 | 127 | 87 | 83 | 1 | 302 | 318 | 581 | 386 | 330 | 1155 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 5 | — | — | SW 17 | — | — | — | SW 19 | SW 18 | — | SW 5 | SW 7 | — | — | SW 16 | — |
| kJ | — | — | — | — | — | 20 | — | — | 98 | — | — | — | 58 | 52 | — | 28 | 12 | — | — | 69 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 16 | — | — | SSW 11 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 10 | — | — | 11 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 5 | S 6 | SE 6 | E 4 | SE 2 | E 4 | ENE 3 | — | — | N 3 | NNW 4 | N 3 | N 4 | NW 4 | SW 17 | SW 16 | SW 5 | SSW 14 | — | SW 13 | SSE 4 |
| kJ | 53 | 62 | 89 | 16 | 1 | 14 | 4 | — | — | 8 | 5 | 4 | 18 | 18 | 594 | 65 | 27 | 81 | — | 44 | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 491 | 491 | 500 | 243 | 491 | 0 | 0 | 0 | 0 | 401 | 178 | 0 | 506 | 401 | 583 | 0 | 1219 | 491 | 0 | 491 | 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.
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