Surf Forecasts:
Cunns surf forecast from 8 Aug 2026:
- Best quality surf: Thursday 13 Aug, 6PM (local time) - 7ft (2.2m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 3AM (local time) - 10ft (3.0m), 18s period, SW swell with 5,369 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 6AM (local time) - 7ft (2.1m), 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 Thursday (Aug 13) at 6AM. The primary swell is predicted to be 2.1m and 15s period. 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 3.0m 18s and forecast to arrive on Monday (Aug 10) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 13th Aug) | 7ft (2.1m) 15s |
| Best Surf | 6PM (Thu 13th Aug) | 7ft (2.2m) 15s |
| Most Powerful | 3AM (Mon 10th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, let’s break it down. Cunns is looking at a rough start. We’ve got a big 10ft SW swell rolling in on Sunday the 9th, but a screaming 31 mph WSW wind is tearing it apart, cross-on. The whole thing is blown out, with heavy rain to boot. That swell energy is massive (1068) but it's all for nothing. This pattern just keeps going through Monday and Tuesday – big SW groundswell, but the wind stays cross-on and strong. The water temp is 60°, right about average for the time of year, so no surprises there.
Wednesday the 13th is where the tide turns. Thursday morning, we finally score a break. The wind goes dead calm, glassy. The swell is a solid 7ft from the SW with a period of 15 seconds – that’s proper groundswell, lots of energy (2208). This is an exposed reef break, and with those long-period swells, it’s going to hold up beautifully. This is expert territory though, 7ft is no joke, and Cunns is an advanced spot. It’ll be clean and powerful, but not for the faint-hearted. Friday morning is similar magic – glassy again, 6ft SW swell (1697), still that excellent quality. Friday afternoon and Saturday keep that clean vibe going with offshore and cross-off winds, swell holding around 5ft to 6ft.
The standout window here is Thursday morning, August 13th. That glassy calm, 7ft SW groundswell at 15 seconds, and an exposed reef setup – it’s going to be incredible for the experienced crew. Keep in mind the crowds at Cunns are "sometimes," so you might have a few others with the same idea, but it won't be a zoo.
From Sunday the 16th onward, the swell drops off. We’re looking at 4ft to 4ft for a few days, still clean with offshore winds, but the energy is way down (under 1000). Not bad for a longboard, but nothing to get excited about. There’s another pulse of swell around Thursday the 20th, pushing 8ft SW, but the wind is fresh cross-shore again, making it lumpy and messy. That’s more of a kite-surfing setup than a paddle one.
So, to sum it up: the first week is a battle against the wind. The clear winner is Thursday morning, August 13th. Get on it if you can handle the size. After that, we get a few clean but smaller days, and then it fades into mediocrity.
Rusty.
Short Range ForecastHeavy rain (total 24mm), heaviest during Sun morning. Very mild (max 17°C on Tue morning, min 11°C on Sun morning). Winds decreasing (gales from the WSW on Sun night, light winds from the NW by Mon afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Wed morning, min 14°C on Wed morning). Winds decreasing (fresh winds from the WSW on Wed morning, calm by Thu morning). | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 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) | WSW 8 | WSW 10 | SW 12 | SW 17 | SW 16 | SW 16 | SW 14 | WSW 18 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1068 | 2047 | 2538 | 4103 | 2475 | 1513 | 746 | 2648 | 4348 | 3882 | 3272 | 2203 | 2208 | 2150 | 1958 | 1697 | 2414 | 1992 | 1532 | 1265 | 836 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross | glassy | glassy | cross-off | off | off | off | off |
High Tide | 11:38AM1.14m | 1:00AM0.58m | 12:03PM1.28m | 00:48AM0.63m | 12:27PM1.36m | 00:49AM0.71m | 12:48PM1.38m | 00:57AM0.80m | 1:06PM1.36m | 1:08AM0.91m | 1:19PM1.30m | 1:22AM1.00m | 1:29PM1.24m | 1:39AM1.08m | |||||||
Low Tide | 7:12PM0.14m | 5:06AM0.41m | 7:16PM0.11m | 5:37AM0.27m | 7:23PM0.11m | 6:04AM0.16m | 7:30PM0.12m | 6:29AM0.08m | 7:34PM0.13m | 6:52AM0.05m | 7:37PM0.11m | 7:13AM0.06m | 7:42PM0.07m | ||||||||
 |  |  |  |  |  | |  | | | |  | | |  | | | | | | | |
 | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — |
 | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — |
mm | 14 | — | 2 | — | — | — | — | 6 | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 13 | 14 | 14 | 13 | 17 | 12 | 13 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 15 | 14 | 15 | 16 |
Feels °C | 2 | 3 | 3 | 8 | 9 | 7 | 7 | 1 | 4 | 9 | 9 | 12 | 14 | 12 | 13 | 12 | 12 | 12 | 10 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | SW 16 | SW 16 | SW 14 | SW 18 | — | — | — | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 |
| kJ | — | — | — | — | 2475 | 1513 | 746 | 1798 | — | — | — | 2203 | 2208 | 2150 | 1958 | 1697 | 2414 | 1992 | 1532 | 1265 | 836 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 8 | WSW 10 | SW 12 | SW 17 | SW 16 | — | NW 5 | WSW 18 | SW 16 | SW 17 | SW 16 | SW 16 | — | — | — | — | — | — | — | — | — |
| kJ | 1068 | 2047 | 2538 | 4103 | 68 | — | 73 | 2648 | 4348 | 3882 | 3272 | 64 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 500 | 401 | 837 | 1165 | 1316 | 510 | 1045 | 1227 | 1344 | 1229 | 1229 | 648 | 0 | 1219 | 0 | 0 | 0 | 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.
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