
Surf Forecasts:
Cunns surf forecast from 31 Jul 2026:
- Best quality surf: Monday 3 Aug, 3AM (local time) - 6ft (1.9m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 2 Aug, 9PM (local time) - 6.5ft (2.0m), 16s period, SW swell with 1,856 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 3AM (local time) - 6ft (1.9m), 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 Monday (Aug 03) at 3AM. The primary swell is predicted to be 1.9m and 15s period with a secondary swell of 0.4m and 15s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cunns in the next 16 days are 2.0m 16s and forecast to arrive on Sunday (Aug 02) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Aug 05) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 3rd Aug) | 6ft (1.9m) 15s |
| Best Surf | 3AM (Mon 3rd Aug) | 6ft (1.9m) 15s |
| Most Powerful | 9PM (Sun 2nd Aug) | 6.5ft (2.0m) 16s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s break down what’s cookin’ for Cunns (reef). It’s gonna be a bit of a rollercoaster over the next couple weeks, but there’s some serious juice on the way if you can wait it out.
The pattern starts off pretty average, with a few days of messy, onshore garbage. A decent groundswell is building, but the wind just won’t cooperate for the first part of the week. Water temp is 60°, which is pretty normal for this time of year, nothin’ to write home about.
The first real standout hits Monday morning, August 3rd. The wind goes dead glassy, with a clean 6ft SW swell rollin’ in. The swell period is a solid 14 seconds, so it’s got some serious push and shape. The combined energy is strong (1273), so this one is for the experienced crew only – it’s got some punch. That glassy, offshore wind means it’ll be absolutely clean. It’s a reef break, so it should handle that long period well. Crowds are possible here, so get in early.
Movin’ into the next week, things get a bit more interesting. Thursday morning, August 6th, is another clean window – light ENE cross-off breeze, 4ft SW groundswell at 16 seconds. The energy is moderate (751), but it’s clean, and the forecast is very good. Then Thursday afternoon kicks up a notch: 5ft SW swell, 16 seconds, and a light S cross-off breeze. The combined energy is strong (1014) and the conditions are described as excellent for experienced surfers.
Now, the big one. Circle Friday afternoon, August 14th, on your calendar. We’ve got a 10ft SW swell, 13-second period, with a light S cross-off wind. The combined energy here is massive (4261), and the conditions are rated excellent for experienced surfers. This is a serious, powerful groundswell that will be firing down the reef. Only for the crew who know what they’re doin’.
Then Saturday morning, August 15th, is a total beast. The model is showin’ a 10ft SW swell, 17-second period, with a cross-shore breeze. The combined energy is absolutely pumpin’ at 10049. This is a very long-period, powerful groundswell. It’s described as marginal due to the cross-shore wind, but for a reef break like Cunns, that can still be really good. But again, this is expert-only territory. The swell size is over 8ft, so it’s not for the faint-hearted.
The second week has a few other pulses, but the wind is often messy. There’s a small window on Wednesday morning, August 12th, with an 8ft WSW swell and a gentle cross-shore, but the period is short (13 seconds), so it won’t have the same quality as the bigger swells. The ratings are still decent for the size, but it’s not a standout.
Overall, the best sessions are the glassy Monday morning on the 3rd, the clean Thursday on the 6th, and the monster Friday afternoon on the 14th. The 15th is massive but will need the wind to line up. There’s a bit of a gap in the first few days, but once it starts, it’s worth watchin’.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sat afternoon, min 11°C on Sat morning). Winds decreasing (fresh winds from the N on Sat morning, calm by Mon morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Wed afternoon, min 11°C on Mon night). Winds decreasing (fresh winds from the NNE on Tue night, calm by Thu morning). | |||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||||
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 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 16 | SW 14 | SW 14 | SW 13 | SW 12 | SW 15 | SW 16 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 |
Wave Graph | ||||||||||||||||||||
331 | 307 | 760 | 1081 | 1029 | 1033 | 1155 | 1856 | 1273 | 1018 | 600 | 268 | 485 | 287 | 515 | 881 | 746 | 746 | 1014 | 891 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross | cross | cross-on | cross | glassy | cross-off | cross-off | cross-off | cross | cross-off | cross | cross | off | cross-off | cross-off | cross-off |
High Tide | 1:30AM0.97m | 1:44PM1.40m | 1:55AM1.02m | 2:06PM1.33m | 2:21AM1.04m | 2:27PM1.22m | 2:48AM1.04m | 2:45PM1.07m | 3:17AM1.01m | 2:52PM0.90m | 3:49AM0.95m | 2:24PM0.75m | ||||||||
Low Tide | 7:50PM0.04m | 7:16AM-0.00m | 8:08PM0.03m | 7:44AM0.02m | 8:27PM0.04m | 8:13AM0.09m | 8:45PM0.08m | 8:43AM0.19m | 9:00PM0.13m | 9:12AM0.35m | 9:08PM0.19m | 9:37AM0.53m | 8:59PM0.25m | |||||||
— | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | |
6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 15 | 18 | 17 | 15 | 15 | 14 | 14 | 14 | 13 | 15 | 18 | 17 | 19 | 20 | 17 | 19 | 19 | 18 |
Feels °C | 11 | 9 | 7 | 12 | 11 | 10 | 9 | 11 | 11 | 10 | 8 | 10 | 13 | 11 | 13 | 17 | 15 | 17 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 17 | SW 17 | SW 16 | N 4 | SW 15 | SW 16 | SW 14 | SW 14 | SW 13 | SW 12 | SW 15 | SW 16 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 |
331 | 221 | 760 | 1081 | 1029 | 3 | 1155 | 1856 | 1273 | 1018 | 600 | 268 | 485 | 287 | 515 | 881 | 746 | 746 | 1014 | 891 | |
Swell 2 Height (m) Direction Period (s) | SW 20 | SW 18 | S 8 | — | — | — | — | — | — | SW 18 | SW 17 | SW 15 | — | SW 21 | SW 14 | S 9 | SSW 8 | S 8 | — | SW 20 |
239 | 307 | 5 | — | — | — | — | — | — | 81 | 147 | 229 | — | 269 | 162 | 38 | 6 | 5 | — | 459 | |
Swell 3 Height (m) Direction Period (s) | S 9 | — | — | — | — | — | — | — | — | — | — | — | — | S 10 | SSW 9 | — | — | — | — | — |
39 | — | — | — | — | — | — | — | — | — | — | — | — | 69 | 15 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NE 3 | N 4 | NW 4 | N 4 | SW 15 | — | SW 16 | — | SW 14 | — | NE 3 | — | ENE 3 | N 4 | NW 9 | — | E 8 | — | NE 3 |
— | 3 | 27 | 10 | 14 | 1033 | — | 38 | — | 51 | — | 2 | — | 5 | 6 | 3 | — | 1 | — | 5 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 401 | 500 | 564 | 1149 | 1227 | 940 | 0 | 0 | 0 | 0 | 0 | 0 | 287 | 178 | 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.











