
Surf Forecasts:
Cunns surf forecast from 4 Aug 2026:
- Best quality surf: Thursday 6 Aug, 6PM (local time) - 5ft (1.6m), 16s period, SW swell with offshore winds.
- Most powerful swell: Monday 10 Aug, 9AM (local time) - 13ft (4.0m), 17s period, SW swell with 7,935 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 6PM (local time) - 3.5ft (1.1m), 17s 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 05) at 6PM. The primary swell is predicted to be 1.1m and 17s period with a secondary swell of 0.5m and 9s. 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 17s and forecast to arrive on Monday (Aug 10) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Aug 05) at 12AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Wed 5th Aug) | 3.5ft (1.1m) 17s |
| Best Surf | 6PM (Thu 6th Aug) | 5ft (1.6m) 16s |
| Most Powerful | 9AM (Mon 10th Aug) | 13ft (4.0m) 17s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
G’day, it’s Rusty.
Let’s talk about what’s coming up at Cunns. This is a tricky reef break, one for the experienced crew, and it’s inconsistent, so it doesn’t fire all the time. But when it does, it’s a beauty. The water’s sitting at 60°F, which is about average for this time of year, nothing unusual.
We’ve got a bit of a wait for the first real action. The forecast kicks off on Tuesday the 4th of August with a small, clean pulse. It’s only 3 ft from the SW, with a long 15-second period, and the wind is light and cross-off from the NE. That’s a glassy, clean setup. The combined energy is moderate at 364. It’s not big, but the conditions are pristine. That’s your sneaky good window for a quiet session, especially if you want to avoid the crowds that can show up here.
Wednesday the 5th is a bit of a mess. The swell picks up to 4 ft from the SW, with a very long 18-second period, but the wind swings around and goes cross and cross-on, so the surface gets chopped up. The energy jumps to 722, but the quality is marginal. Thursday the 6th is a proper standout. Morning has offshore E breeze at 10 km/h, with a clean 4 ft SW swell at 16 seconds. The energy is moderate at 581. The afternoon cleans up even more with a cross-off SSE wind, solid 4 ft SW swell, and energy climbing to 916. This is the best of the first week—clean, lined up, and begging for a reef wave.
Then things get wild. From Friday the 7th through to Sunday the 16th of August, it’s a long stretch of poor conditions. The wind turns onshore or cross-onshore, blowing 12 to 31 mph, and the swell gets big—blowing up to 13 ft by Monday the 10th, with a crazy combined energy of 11,990. That’s way too much juice for this spot, and the wind is howling. It’s blown out, lumpy, and messy. Beginners stay well away, and even experts will find it a battle. This stretch is more for kite surfing than paddle surfing.
The light finally appears on Friday the 14th of August. The afternoon shows a clean cross-off breeze from the SSE, with a 6 ft SW swell, 17-second period, and energy of 1,972. It’s excellent for experienced surfers, but the swell is still sizeable. That’s a promising one. Then again on Monday the 17th of August, the afternoon shapes up with a clean cross-off wind, 6 ft SW swell at 16 seconds, and energy of 1,548. Another solid window for the confident crew.
The rest of the fortnight after that is a mix of onshore winds and choppy conditions, nothing to get excited about. So mark your calendar for Thursday the 6th of August for the cleanest, most manageable swell, and keep an eye on the 14th and 17th for the bigger, cleaner groundswell.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Tue afternoon, min 14°C on Wed night). Winds increasing (light winds from the SE on Thu morning, fresh winds from the N by Fri morning). | Days 5-7 Weather SummaryHeavy rain (total 21mm), heaviest during Sat afternoon. Warm (max 20°C on Fri night, min 11°C on Sat night). Winds increasing (light winds from the N on Fri afternoon, near gales from the W by Sat night). | |||||||||||||||||||
Tue 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | WSW 14 | WSW 10 | WSW 12 | WSW 17 | SW 17 | SW 16 | SW 15 |
Wave Graph | ||||||||||||||||||||
258 | 335 | 361 | 694 | 581 | 567 | 909 | 1384 | 1381 | 1252 | 1172 | 1074 | 868 | 1690 | 1946 | 2460 | 5051 | 7935 | 5403 | 3869 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross-off | off | cross-off | cross-off | cross | on | cross-off | cross-on | on | cross-on | cross-on | cross-on | on | on | on | cross-on |
High Tide | 3:17AM1.01m | 2:52PM0.90m | 3:49AM0.95m | 2:24PM0.75m | 4:31AM0.85m | 11:17AM0.96m | 2:07AM0.58m | 11:38AM1.14m | 1:00AM0.58m | 12:03PM1.28m | 00:48AM0.63m | |||||||||
Low Tide | 9:00PM0.13m | 9:12AM0.35m | 9:08PM0.19m | 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 | ||||||||
— | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | |
6:02 | — | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | |
mm | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 6 | 7 | 5 | — | 1 | — | — | 1 |
Temp °C | 19 | 18 | 17 | 19 | 16 | 16 | 17 | 18 | 19 | 16 | 20 | 20 | 17 | 15 | 13 | 13 | 14 | 15 | 15 | 14 |
Feels °C | 14 | 13 | 12 | 15 | 14 | 15 | 15 | 14 | 11 | 13 | 14 | 14 | 11 | 9 | 1 | 3 | 7 | 7 | 6 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | — | — | — | — | SW 17 | SW 16 | — |
258 | 322 | 361 | 694 | 581 | 567 | 909 | 1384 | 1381 | 1252 | 1172 | 1074 | 868 | — | — | — | — | 7935 | 5403 | — | |
Swell 2 Height (m) Direction Period (s) | SW 10 | SW 21 | SW 15 | SW 9 | WSW 5 | WSW 5 | SW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
106 | 150 | 134 | 28 | 6 | 4 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | SW 20 | SW 10 | — | S 8 | S 8 | W 5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 335 | 45 | — | 5 | 10 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NE 3 | — | — | — | — | — | — | NNW 4 | NW 5 | — | NNW 2 | NW 5 | WSW 14 | WSW 10 | WSW 12 | WSW 17 | SW 17 | SW 16 | SW 15 |
— | 4 | — | — | — | — | — | — | 16 | 43 | — | 1 | 47 | 1690 | 1946 | 2460 | 5051 | 4055 | 3880 | 3869 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 178 | 0 | 0 | 0 | 0 | 401 | 553 | 0 | 564 | 564 | 510 | 1406 | 1406 | 1457 | 1219 | 1045 | 1510 |
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.











