Surf Forecasts:
Cunns surf forecast from 9 Aug 2026:
- Best quality surf: Thursday 13 Aug, 6AM (local time) - 7.5ft (2.3m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 12PM (local time) - 10ft (3.0m), 17s period, SW swell with 5,124 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 6AM (local time) - 7.5ft (2.3m), 16s 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 2.3m and 16s period with a secondary swell of 0.4m and 16s. 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 17s and forecast to arrive on Monday (Aug 10) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Aug 17) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 13th Aug) | 7.5ft (2.3m) 16s |
| Best Surf | 6AM (Thu 13th Aug) | 7.5ft (2.3m) 16s |
| Most Powerful | 12PM (Mon 10th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's have a look at what we’ve got on the cards for Cunns over the next couple of weeks.
Right off the bat, the first few days are a write-off. Monday the 10th and Tuesday the 11th are showing messy, choppy conditions with onshore and cross-onshore winds over 15 mph, so don’t even bother paddling out. We’ve got some proper energy in the water with combined swell energy readings up to 3882 (moderate to strong), but it’s all blown out. Wednesday the 12th is more of the same – fresh cross-onshore winds ruining what would otherwise be a solid 8ft SW swell.
Now, Thursday the 13th is where things get interesting. The morning is looking glassy with a slight air and a 8ft SW swell. That 16-second period is a proper groundswell, meaning long, powerful lines. For a reef like Cunns, that’s a beautiful thing. The water temp is sitting at 60°, which is about average for this time of year. This is the standout session of the whole outlook – excellent conditions for experienced surfers.
Friday the 14th keeps the quality up. The morning has a clean cross-off breeze with a 7ft SW swell at 18 seconds – that’s some serious long-period energy. Saturday the 15th is another gem. Offshore winds from the ESE all day, with a solid 6ft SW swell. The combined energy is still strong at 1654. These two days are your next best bets after Thursday.
Sunday the 16th still has clean offshore winds, but the swell drops to 5ft. It’ll be fun on a log or a mid-length, but not the same punch as the days before. After that, Monday the 17th is small and clean, and then from Tuesday the 18th through to the end of the outlook, things get pretty average again with onshore winds and lumpy conditions. There’s a brief uptick in swell around Thursday the 20th afternoon with a 6ft WSW, but the winds are light and onshore, so it’s marginal at best. By Friday the 21st and Saturday the 22nd, we’re looking at near gale-force winds and rain – that’s kite-surfing territory, not paddle surfing.
To sum it up: Thursday the 13th morning is your absolute best bet. Friday the 14th and Saturday the 15th are also solid. Get on it while the getting’s good.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue afternoon. Very mild (max 18°C on Tue morning, min 11°C on Mon night). Winds decreasing (near gales from the SW on Tue afternoon, light winds from the S by Wed night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Thu night, min 14°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 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 17 | SW 16 | SW 16 | SW 14 | WSW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3882 | 2475 | 1384 | 668 | 2490 | 4438 | 3746 | 3272 | 2538 | 2516 | 1958 | 1568 | 2714 | 2790 | 1855 | 1654 | 1513 | 1108 | 802 | 573 | 350 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | glassy | cross | off | cross-off | cross-off | off | off | off | off | off | off | off |
High Tide | 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 | 1:39PM1.18m | 1:58AM1.12m | |||||||
Low Tide | 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 | 7:34AM0.10m | 7:51PM0.03m | ||||||||
 | |  |  |  |  | |  |  | | |  | | | | | | | | | | |
 | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — |
 | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:09 | — |
mm | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 13 | 18 | 16 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 |
Feels °C | 7 | 9 | 7 | 9 | 7 | 5 | 8 | 8 | 11 | 13 | 12 | 14 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | — | SW 16 | SW 16 | SW 14 | SW 18 | — | — | — | SW 16 | SW 16 | SW 15 | SW 15 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 |
| kJ | — | 2475 | 1384 | 668 | 1777 | — | — | — | 2538 | 2516 | 1958 | 1568 | 2714 | 2790 | 1855 | 1654 | 1513 | 1108 | 802 | 573 | 350 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 17 | SW 16 | NW 4 | NW 5 | WSW 18 | SW 17 | SW 17 | SW 16 | SW 16 | — | SW 16 | — | — | SW 17 | — | — | — | — | — | — | ESE 3 |
| kJ | 3882 | 42 | 16 | 61 | 2490 | 4438 | 3746 | 3272 | 64 | — | 62 | — | — | 75 | — | — | — | — | — | — | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1228 | 1438 | 500 | 978 | 978 | 1287 | 1510 | 1219 | 648 | 0 | 648 | 0 | 0 | 243 | 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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