Cunns
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Hourly Forecast
Timezone: Australia/Adelaide
⏱️s.
⚡️kJ
Saturday 13
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Tuesday 16
Wednesday 17
Thursday 18
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Cunns surf guide

Cunns is a surf spot that offers a bit of a break from the crowds you might find at Cactus. It's a mid tide left that can be inconsistent at times, but if you're looking to escape the locals and enjoy a surf session in a more laid-back vibe, Cunns is worth checking out. It's positioned closer to the cliffs of the southern headland, which gives it some better protection from south winds. However, you’ll need some decent swell size for it to really work well compared to Cactus.

The waves here can be a mixed bag. When conditions are right, Cunns can handle swell sizes around 4ft (about 1.2 meters) and prefers a southwest swell direction. The best swell directions to catch are from the southeast and southwest. The breaks occur over uneven reef, which can create some sectiony walls, and the left-hand waves can sometimes close out rapidly at the end. For a good session, you’re looking at low, mid, or even high tides, with east winds being the most favorable.

This spot is definitely better suited for intermediate surfers, especially when the waves are on the smaller side. It can feel a bit more isolated and less intense than some other spots, which makes it a great place to avoid the local gaze while still getting your surf fix. Just keep in mind that when the swell picks up, it can become quite heavy, so be prepared if you decide to paddle out on bigger days.

Surf reports and surf forecasts nearby Cunns

Spits
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Salmon Hole
South Australia, Australia
Point break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Caves
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Castles (Cactus)
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Cactus
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Crushers
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Supertubes (Cactus)
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Cunns
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Witzig's
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Backdoor (Cactus)
South Australia, Australia
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
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Welcome! If you’re new to surf forecasting, check out this quick guide.

Forecast Table

The forecast table (the section on the page with all the numbers) is designed to pack as much information in the screen as possible. Although intimidating at first, it will help you make informed decisions about the waves faster, trust me :D. The table consists of roughly four sections, time and predictions, wind, waves, and tides:

🔮 Time and predictions section

Here we show the forecast thour and the overall surf quality prediction. This is determined based on the wave, wind and tide quality prediction. These individual predictions can be found on the forecast map.

💨 Wind section

The first row on the table (with the 💨 icon) shows wind speed, direction and gust. The more the wind speed the more aggressive the color (from blue, green, orange to red).

🌊 Wave section

The waves section consists of three rows, one for wave height and direction, one for period and one for wave energy. Our algorithm choices the "dominant wave". This is normally the first swell partition, but with heavy local storms it displays the wind waves. If that's the case, we display the numbers in italic and in gray.

🌒 Tide section

The tide section consists of a row with the actual heights per hour (measured at the half hour) and a table that displays the flow of the tide and the extremes (lows and highs).

Forecast map

The forecast map consists of arrows. These arrows represent all wave partitions (swell partitions and wind wave partition) and the wind. This allows you to see things like: a secondary swell or wind waves messes up the surf, or the wind is just a tick offshore so very surfable. Click a metric label in the bottom left to bring that arrow to the front — handy when arrows overlap.

Forecast Cheat Sheet

Short on time? Focus on wave energy. It’s the best single metric to gauge how big and powerful the waves will be.

Click any table cell to jump to that forecast hour. The map will update with forecast arrows, so you can see if wind and swell direction are lining up.

Use the table sidebar to switch units for height and speed.

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Models and Updates

Surfnerd blends multiple global and local wind and swell models using advanced interpolation and spatial techniques to create an "ensemble" forecast. Forecasts are refreshed hourly.

Surf Predictions

Our AI-driven algorithm scores surf quality, shown by green, orange, and gray dots. Each forecast hour is rated for wind, swell, and tide quality, then combined into an overall score. Here’s the scale:

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Wind certainty

Wind certainty tells you how much the weather models agree on the forecast.

  • High certainty: Models agree closely; forecast is reliable.
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We calculate this by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. They are weighted, meaning that some models count more than others, depending on how good they are for a certain spot.

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