Surf Forecasts:
Cunns surf forecast from 19 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 9PM (local time) - 5ft (1.5m), 15s period, SW swell with offshore winds.
- Most powerful swell: Monday 24 Aug, 6PM (local time) - 5.5ft (1.7m), 18s period, SW swell with 1,769 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 9PM (local time) - 5ft (1.5m), 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 Wednesday (Aug 19) at 9PM. The primary swell is predicted to be 1.5m and 15s period with a secondary swell of 0.8m and 18s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cunns in the next 16 days are 1.7m 18s and forecast to arrive on Monday (Aug 24) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Aug 23) at 12AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 19th Aug) | 5ft (1.5m) 15s |
| Best Surf | 9PM (Wed 19th Aug) | 5ft (1.5m) 15s |
| Most Powerful | 6PM (Mon 24th Aug) | 5.5ft (1.7m) 18s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming up.
Right off the bat, we’ve got a solid run of SW groundswell hitting Cunns, a reef break that’s exposed to the SW and needs a clean offshore to really shine. The water’s sitting at 59°, which is about average for this time of year, so nothing crazy there.
The first few days are a bit of a write-off. Wednesday the 19th into Thursday the 20th is messy – cross-onshore and cross-shore winds with only knee-to-waist high waves and poor to marginal conditions. Not worth paddling out for.
Things start to turn on Friday the 21st. That’s the first real standout. The morning shows a clean 5ft SW swell with a 15-second period and a gentle cross-offshore breeze. The combined energy is solid (1399), and it’s holding into the afternoon with 5ft and similar conditions. This is excellent for experienced surfers – the reef will be offering up some well-shaped, powerful lines. The swell direction is bang on from the SW, which is what this break loves. Saturday the 22nd keeps the quality going, again with clean 5ft SW swell and a cross-offshore breeze. Crowds are possible here, so get in early.
Sunday the 23rd afternoon is a real treat. The wind drops to glassy, with a 4ft SW swell, 16-second period, and only 3 mph wind. That’s a magic window for clean, smooth waves, though the combined energy is a bit lower (886) than the standout days.
There’s a bit of a lull from Monday the 24th into Tuesday the 27th with mixed conditions, some clean but inconsistent, and some lumpy. Then another strong window opens on Friday the 28th. The morning shows 5ft SSW swell, 16-second period, with a light cross-offshore breeze (1179). The afternoon is the real highlight: 6ft SSW swell, 16-second period, and a clean offshore wind from the ESE (1729). That’s gonna be firing, classic long-period groundswell wrapping into the reef. Again, for experienced surfers only.
After that, the swell drops off quickly. The last week of the forecast is smaller, with waves under 3ft and inconsistent, though Wednesday the 3rd of September offers a clean 3ft swell with offshore winds, good for a grovel session if you’re keen.
Overall, the best on offer is Friday the 21st through Saturday the 22nd, and then Friday the 28th afternoon. Those are the days to clear your schedule.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Thu morning, min 12°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sun morning. Very mild (max 16°C on Sat afternoon, min 11°C on Sat morning). Winds increasing (calm on Sun afternoon, fresh winds from the SW by Mon night). | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 15 | SW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 14 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 385 | 966 | 685 | 416 | 574 | 1135 | 949 | 1398 | 1402 | 1265 | 1123 | 844 | 1267 | 886 | 485 | 513 | 943 | 954 | 1463 | 1102 | 710 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | on | cross | cross | cross-off | cross-off | off | cross-off | cross-off | off | cross | glassy | cross-off | cross | cross | cross-on | cross-off | cross-off | glassy |
High Tide | 2:07PM0.99m | 3:00AM1.03m | 2:07PM0.91m | 3:19AM0.92m | 1:48PM0.84m | 3:31AM0.80m | 12:48PM0.83m | 2:55AM0.66m | 11:50AM0.92m | 1:02AM0.62m | 11:40AM1.06m | 00:18AM0.68m | 11:50AM1.19m | 00:13AM0.78m | |||||||
Low Tide | 8:28PM0.06m | 8:43AM0.44m | 8:36PM0.13m | 8:44AM0.56m | 8:33PM0.21m | 7:56AM0.66m | 8:02PM0.28m | 5:37AM0.64m | 7:09PM0.28m | 5:03AM0.50m | 6:40PM0.23m | 5:15AM0.35m | 6:35PM0.15m | ||||||||
 |  |  | | | |  | | | | |  |  | |  | | | | | |  | |
 | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — |
 | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | 1 | — | — | — |
Temp °C | 15 | 15 | 15 | 16 | 16 | 14 | 13 | 13 | 13 | 14 | 16 | 15 | 16 | 14 | 13 | 15 | 14 | 13 | 14 | 14 | 13 |
Feels °C | 12 | 10 | 12 | 13 | 12 | 12 | 11 | 10 | 9 | 12 | 12 | 11 | 12 | 13 | 11 | 12 | 9 | 7 | 8 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 17 | SW 16 | SW 15 | — | — | — | — | SW 13 | SW 13 |
| kJ | 385 | 966 | 685 | 416 | 574 | 1135 | 949 | 1398 | 1402 | 1265 | 1123 | 844 | 1267 | 886 | 485 | — | — | — | — | 1102 | 710 |
Swell 2 Height (m) Direction Period (s) | — | SW 20 | SW 18 | SW 9 | SW 8 | SW 19 | SW 18 | — | — | SSW 24 | SW 21 | SW 19 | — | — | SW 21 | — | — | — | — | — | — |
| kJ | — | 99 | 201 | 99 | 58 | 303 | 375 | — | — | 54 | 285 | 369 | — | — | 18 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 8 | SW 15 | — | — | SW 16 | SW 16 | SW 17 | SW 17 | — | — | — | ESE 3 | NNE 3 | — | E 3 | SW 14 | SW 14 | SW 13 | SW 14 | SW 14 | — |
| kJ | 212 | 77 | — | — | 91 | 85 | 75 | 97 | — | — | — | 5 | 4 | — | 2 | 513 | 943 | 954 | 1463 | 46 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 978 | 1045 | 0 | 178 | 1045 | 491 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 510 | 649 | 491 | 491 | 552 | 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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