Surf Forecasts:
Cunns surf forecast from 30 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, 6AM (local time) - 10ft (3.0m), 15s period, WSW swell with 3,227 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 12PM (local time) - 2.5ft (0.7m), 19s 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 Sunday (Aug 30) at 12PM. The primary swell is predicted to be 0.7m and 19s period with a secondary swell of 0.8m and 13s. 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 15s and forecast to arrive on Saturday (Sep 05) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Sep 04) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sun 30th Aug) | 2.5ft (0.7m) 19s |
| Best Surf | 3PM (Sun 30th Aug) | 4ft (1.2m) 19s |
| Most Powerful | 6AM (Sat 5th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's take a long hard look at what's cookin' for Cunns over the next couple of weeks. This is a reef break that demands respect, so don't be thinking it's a learner's zone.
We're starting with a bit of a tease on Sunday morning, the 30th of August. There's a clean 2ft swell showing, but the energy is still building. It's not really worth paddling out for just yet. Sunday afternoon is where we get our first real taste. That swell jumps to a clean 4ft from the SW, and the wind goes offshore from the east at 9 mph. It's gonna be glassy, clean, and perfect for those who know the lineup. This is a solid start.
Monday the 31st is a bit of a write-off. The swell pushes up to 5ft, but cross-shore winds mess it up. We get a couple of days after that where the wind and swell just don't line up, and it gets messy.
Now, hold onto your boards, because the real standout window is coming up. Saturday the 5th of September is when things get serious. The swell is already building, but by Saturday afternoon, we're looking at a very solid 11ft SW groundswell with a period of 16 seconds. The combined energy is a massive 10483, which is just nuts. The wind is a cross-shore at 12 mph, so it won't be perfect, but the power is undeniable. This is big-wave territory, over 8ft, for experts only. This is the big one.
This big energy rolls through, and then the wind finally plays ball. Monday the 7th of September is a dream scenario. We've still got a thumping 10ft SW groundswell, but the wind is a light cross-offshore. The morning is glassy, and the afternoon stays clean. The period is 17 seconds, so these are long, lined-up waves that will wrap beautifully around this reef.
After that, the swell slowly backs off through the week, with some clean sessions on the 9th and 10th of September, but nothing that matches that peak.
Looking into the second week, there's a bit of a gap. The 11th and 12th are messy. But then, Sunday the 13th of September brings in a nice, clean 4ft SW swell with a 16-second period and offshore wind. It's a small, clean, classic reef wave. The following Monday, the 14th, keeps the clean lines going with a 6ft SW swell.
So, to sum it up: the best on offer is the massive, powerful, expert-only surf on Saturday the 5th of September, and then the absolutely perfect, clean, 10ft groundswell on Monday the 7th of September. Those two days are what we’re living for.
Stay safe out there.
- Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Tue morning, min 13°C on Tue night). Winds increasing (light winds from the E on Sun afternoon, fresh winds from the N by Mon night). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Fri night. Warm (max 24°C on Fri morning, min 14°C on Wed morning). Winds increasing (calm on Wed night, strong winds from the WSW by Fri night). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 19 | SW 19 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | WSW 17 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 13 | SW 17 | SW 16 | SW 15 | SW 15 | SW 9 | SW 15 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 236 | 1016 | 1050 | 1642 | 1453 | 909 | 539 | 1107 | 1014 | 875 | 1999 | 1155 | 898 | 767 | 2068 | 2009 | 2264 | 1343 | 1149 | 2264 | 1978 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 12:18PM0.85m | 2:38AM0.77m | |||||||
Low Tide | 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 | 7:58AM0.69m | 7:31PM0.13m | ||||||||
 | |  | | | |  | |  | | | | | | |  | |  | | | | |
 | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — |
 | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — |
Temp °C | 21 | 22 | 20 | 22 | 24 | 23 | 25 | 17 | 14 | 15 | 14 | 14 | 18 | 18 | 19 | 24 | 22 | 16 | 15 | 14 | 13 |
Feels °C | 17 | 18 | 16 | 17 | 19 | 18 | 17 | 11 | 10 | 9 | 9 | 12 | 16 | 14 | 16 | 21 | 19 | 13 | 8 | 8 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 19 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | — | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 13 | SW 17 | SW 16 | SW 15 | — | — | — | SW 16 |
| kJ | 216 | 1016 | 1050 | 1642 | 1453 | 909 | 539 | — | 1014 | 875 | 1999 | 1155 | 898 | 767 | 2068 | 2009 | 2264 | — | — | — | 1978 |
Swell 2 Height (m) Direction Period (s) | SW 19 | — | SW 21 | — | — | — | — | — | — | SW 6 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 236 | — | 162 | — | — | — | — | — | — | 53 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | ESE 4 | NE 3 | — | N 3 | NNW 4 | WSW 17 | — | SW 16 | SW 14 | SW 14 | — | SW 13 | E 4 | — | SW 15 | SW 15 | SW 9 | SW 15 | — |
| kJ | — | — | 10 | 3 | — | 3 | 29 | 1107 | — | 88 | 1290 | 52 | — | 45 | 14 | — | 1363 | 1343 | 1149 | 2264 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 1227 | 632 | 1048 | 510 | 648 | 0 | 0 | 0 | 0 | 0 | 132 | 648 | 1035 | 941 | 491 |
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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