Surf Forecasts:
Cunns surf forecast from 29 Aug 2026:
- Best quality surf: Sunday 30 Aug, 3PM (local time) - 4ft (1.2m), 19s period, SW swell with offshore winds.
- Most powerful swell: Saturday 5 Sep, 3PM (local time) - 8ft (2.5m), 16s period, SW swell with 3,222 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 9PM (local time) - 2.5ft (0.8m), 13s 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 Saturday (Aug 29) at 9PM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.3m and 21s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cunns in the next 16 days are 2.5m 16s and forecast to arrive on Saturday (Sep 05) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Aug 29) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sat 29th Aug) | 2.5ft (0.8m) 13s |
| Best Surf | 3PM (Sun 30th Aug) | 4ft (1.2m) 19s |
| Most Powerful | 3PM (Sat 5th Sep) | 8ft (2.5m) 16s |
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 menu for the coming days.
Things kick off this Saturday afternoon, August 29th, with a modest little pulse at Cunns. We're looking at a 3ft SW groundswell, with a period of 13 seconds, and a clean offshore breeze out of the ESE. The water is sitting at 60°, which is pretty much normal for this time of year. The combined energy is moderate at 326, so it's not a day to get overly excited, but it's a nice, clean option to get wet.
The real standout, though, is Sunday afternoon, August 30th. That's when the swell really fills in. We get a solid 4ft of SW groundswell, and the period jumps to a very long 19 seconds. That's proper groundswell energy, and with a combined energy reading of 1016, it's a significant step up. The wind is light and offshore from the ESE, so expect clean, lined-up sets. This is the best session on offer, no doubt about it.
Monday, August 31st, sees the swell size bump up to 5ft, but the wind swings around to a cross-shore breeze from the NNE, which introduces a bit of a cross-chop. It's not terrible, but it's not as clean as Sunday. Tuesday, September 1st, is a write-off with strong onshore winds, and Wednesday, September 2nd, is pretty messy too, with a big 8ft swell but onshore winds making it lumpy. Thursday, September 3rd, offers a slight reprieve with a light cross-offshore breeze in the afternoon, cleaning up the 5ft SW swell. The energy has dropped to 837, so it's a moderate session.
The following week has a lot of strong wind and big, messy swell. From Friday, September 4th, through to around Tuesday, September 8th, we're looking at a lot of onshore conditions and swells over 8ft, which is really only for the experienced crew. The energy readings are through the roof, hitting over 4000 on some days, but it's all blown out. There's a glimmer on Tuesday, September 8th, afternoon with a light onshore breeze and a 10ft SW swell, but it's still a bit choppy.
Things finally start to clean up again on Friday, September 11th, with a 7ft SW swell and a cross-offshore breeze out of the East, giving us clean conditions. The energy is still strong at 2702. Saturday, September 12th, morning has a fresh offshore wind from the ESE, cleaning up a 7ft SW swell. The final window is Sunday, September 13th, afternoon, with a clean 4ft SW swell and a light cross-offshore breeze. The energy is back down to 579, making it a nice, relaxing end to the run.
Cunns is a reef break, so that long-period groundswell will be working well. It's inconsistent, so don't expect waves every five minutes, but when it comes, it'll be good. It can get a bit crowded sometimes, so keep an eye out.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Tue morning, min 18°C on Sat night). Winds increasing (light winds from the ESE on Sun afternoon, fresh winds from the NNW by Tue morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 13°C on Tue night). Winds decreasing (fresh winds from the WSW on Tue afternoon, calm by Wed night). | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 13 | SW 13 | SW 19 | SW 19 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | WSW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 14 | SW 9 |
Wave Graph | ||||||||||||||||||||
290 | 193 | 236 | 1016 | 1050 | 1798 | 1453 | 909 | 539 | 1175 | 1137 | 1151 | 2418 | 1290 | 1033 | 790 | 801 | 1039 | 1533 | 1275 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross | cross-off | cross-off | cross | cross-on | cross-on |
High Tide | 1:13AM1.18m | 1:22PM1.34m | 1:34AM1.23m | 1:40PM1.24m | 1:55AM1.26m | 1:54PM1.12m | 2:17AM1.24m | 2:01PM0.98m | 2:38AM1.18m | 1:55PM0.86m | 2:56AM1.07m | 1:20PM0.80m | 3:04AM0.92m | |||||||
Low Tide | 7:18PM-0.05m | 7:10AM-0.06m | 7:32PM-0.05m | 7:36AM-0.03m | 7:45PM-0.04m | 8:01AM0.06m | 7:57PM-0.01m | 8:24AM0.19m | 8:04PM0.03m | 8:42AM0.36m | 8:05PM0.07m | 8:45AM0.54m | 7:54PM0.11m | |||||||
— | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | |
6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 22 | 20 | 21 | 22 | 20 | 22 | 23 | 23 | 24 | 17 | 14 | 14 | 14 | 14 | 20 | 21 | 20 | 27 | 22 | 17 |
Feels °C | 17 | 15 | 17 | 19 | 16 | 17 | 18 | 17 | 16 | 11 | 9 | 10 | 9 | 12 | 18 | 19 | 15 | 21 | 16 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 12 | SW 19 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | — | — | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 14 | — |
290 | 193 | 216 | 1016 | 1050 | 1798 | 1453 | 909 | 539 | — | — | 1151 | 2418 | 1290 | 1033 | 790 | 801 | 1039 | 1533 | — | |
Swell 2 Height (m) Direction Period (s) | SW 23 | SW 21 | SW 19 | — | SW 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
21 | 160 | 236 | — | 162 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SW 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 3 | SE 4 | — | — | SE 4 | — | — | NNE 3 | NNW 4 | WSW 17 | SW 16 | SW 6 | SW 16 | — | — | SW 14 | E 4 | NW 5 | WSW 14 | SW 9 |
2 | 15 | — | — | 7 | — | — | 3 | 24 | 1175 | 1137 | 53 | 1474 | — | — | 47 | 9 | 35 | 1370 | 1275 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1568 | 510 | 1048 | 510 | 1045 | 0 | 0 | 0 | 0 | 0 | 649 | 1227 |
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)
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.











