
Surf Forecasts:
Cunns surf forecast from 6 Aug 2026:
- Best quality surf: Thursday 13 Aug, 6AM (local time) - 13ft (4.0m), 18s period, SW swell with cross-shore winds.
- Most powerful swell: Thursday 13 Aug, 6AM (local time) - 13ft (4.0m), 18s period, SW swell with 11,063 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 3PM (local time) - 4.5ft (1.3m), 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 06) at 3PM. The primary swell is predicted to be 1.3m and 16s period with a secondary swell of 0.2m and 7s. 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 4.0m 18s and forecast to arrive on Thursday (Aug 13) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Aug 07) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Thu 6th Aug) | 4.5ft (1.3m) 16s |
| Best Surf | 6AM (Thu 13th Aug) | 13ft (4.0m) 18s |
| Most Powerful | 6AM (Thu 13th Aug) | 13ft (4.0m) 18s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, let’s talk about what’s happening. We’ve got just one spot to work with: Cunns, a reef break that’s built for a good SW groundswell. It don’t break all the time, so when it does, you want to be in the water. The water temp is around 60°, which is pretty normal for the time of year.
First real chance to get wet is Thursday, August 6th. There’s a clean, long-period SW groundswell running about 4ft to 4ft, with a 16-second period. That’s a proper groundswell, and with a light offshore breeze in the morning, it’s gonna be glassy. The energy is moderate (582) and builds to strong (913) in the afternoon. This is the one to go for – clean, consistent for this spot, and the swell is coming from the right direction. You can expect very good surf. Just keep in mind, crowds can show up here.
Friday the 7th falls apart quick. A strong northerly wind comes in at 22 mph, blowing cross-onshore, and the swell jumps to 5ft. The wind just messes it up. The energy is strong (1280), but it’s lumpy and no good. Afternoon is a little better wind-wise, but still cross-onshore and only marginal. Saturday and Sunday are a total loss – strong winds, poor surf, and by Sunday we’re looking at a 10ft SW swell with a near gale cross-onshore. That’s totally blown out. The energy is massive (3769), but it’s not for surfing. Kite surfers might love it, but not for a paddle.
The whole next week stays rough. Monday through Wednesday the 12th, it’s onshore and cross-onshore winds, with big swell up to 10ft, and the energy is very high, but the wind is just too strong. Thursday the 13th is still marginal, with a 10ft SW swell and a moderate cross-onshore wind. The wind does ease a bit in the afternoon, but it’s still choppy.
Then we get a break. Friday the 14th is marginal but the wind is light, so it’s not a total washout. It’s not clean, but it’s better. The real turn comes on Saturday, August 15th. The wind swings to a light cross-offshore breeze, and we’ve got a clean 6ft SW groundswell, 16-second period. The energy is strong (1392), and the conditions are excellent for experienced surfers. This is your second standout. It’s a reef, so that long period (16 seconds) is gonna give it some real shape. Sunday the 16th is also very good, with clean 4ft to 4ft SW swell and light offshore winds. A nice little run of clean waves.
After that, it drops off. Monday the 17th is poor again with cross-onshore winds, but Tuesday the 18th comes back with clean 5ft SW groundswell and light cross-offshore winds. Another good session for the experienced crew, with moderate energy (949). The rest of the week into August 21st looks marginal, but the morning of the 21st of August is a real gem – a clean 5ft SW swell with offshore winds and a light breeze. That’s clean, lined up, and promising.
So, the days to circle on the calendar are Thursday, August 6th and Saturday, August 15th, with the 21st of August also looking real good. The rest is a gamble with the wind, so pick your times wisely.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Sat night. Warm (max 23°C on Fri afternoon, min 12°C on Sat night). Winds increasing (light winds from the ENE on Fri afternoon, near gales from the WSW by Sat night). | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Sun morning. Very mild (max 17°C on Mon afternoon, min 10°C on Tue afternoon). Winds increasing (moderate winds from the NNW on Mon afternoon, near gales from the W by Tue afternoon). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 15 | SW 14 | SW 18 | SW 17 | SW 16 | SW 16 | W 14 | WSW 10 | SW 18 | WSW 18 | SW 17 | SW 17 |
Wave Graph | |||||||||||||||||||||
567 | 909 | 1494 | 1271 | 1383 | 1158 | 964 | 856 | 1016 | 3769 | 3420 | 4646 | 3282 | 2328 | 1493 | 2570 | 1665 | 5742 | 5472 | 4177 | 4695 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross |
High Tide | 2:24PM0.75m | 4:31AM0.85m | 11:17AM0.96m | 2:07AM0.58m | 11:38AM1.14m | 1:00AM0.58m | 12:03PM1.28m | 00:48AM0.63m | 12:27PM1.36m | 00:49AM0.71m | 12:48PM1.38m | 00:57AM0.80m | |||||||||
Low Tide | 9:37AM0.53m | 8:59PM0.25m | 9:18AM0.74m | 8:14PM0.26m | 7:25PM0.20m | 4:19AM0.56m | 7:12PM0.14m | 5:06AM0.41m | 7:16PM0.11m | 5:37AM0.27m | 7:23PM0.11m | 6:04AM0.16m | 7:30PM0.12m | ||||||||
7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | |
— | 6:04 | — | — | 6:05 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | |
mm | — | — | — | — | 2 | 1 | — | — | 8 | 4 | — | — | — | — | — | 2 | 2 | 2 | 1 | — | — |
Temp °C | 16 | 17 | 17 | 20 | 23 | 19 | 20 | 19 | 15 | 13 | 14 | 14 | 15 | 17 | 15 | 14 | 13 | 13 | 14 | 14 | 14 |
Feels °C | 14 | 14 | 11 | 15 | 19 | 13 | 15 | 14 | 11 | 2 | 4 | 7 | 8 | 10 | 9 | 5 | 2 | 2 | 5 | 5 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | — | — | — | SW 17 | SW 16 | SW 16 | — | — | — | — | — | — |
567 | 909 | 1494 | 1271 | 1383 | 1158 | 964 | 856 | 1016 | — | — | — | 3282 | 2328 | 1493 | — | — | — | — | — | — | |
Swell 2 Height (m) Direction Period (s) | SW 4 | S 7 | — | — | NNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
5 | 4 | — | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | S 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | N 4 | — | — | NW 3 | WNW 4 | — | SW 15 | SW 14 | SW 18 | — | — | NNW 4 | W 14 | WSW 10 | SW 18 | WSW 18 | SW 17 | SW 17 |
— | — | — | 9 | — | — | 4 | 4 | — | 3769 | 3420 | 4646 | — | — | 25 | 2570 | 1665 | 5742 | 5472 | 4177 | 4695 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 401 | 178 | 564 | 564 | 1227 | 583 | 648 | 1045 | 1344 | 648 | 500 | 649 | 1227 | 1636 | 1344 | 1227 | 1344 | 1048 |
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.











