Kahutara
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Hourly Forecast
Timezone: Pacific/Auckland
⏱️s.
⚡️kJ
Thursday 28
Friday 29
Saturday 30
Sunday 31
Monday 01
Tuesday 02
Tap a forecast cell to explore conditions on the map.
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Kahutara surf guide

Kahutara is a surf spot located just south of Kaikoura. This place is known for its more intense vibe compared to its neighbor, Mangamaunu. It has a heavy feel and tends to be less consistent, which means you're not guaranteed a decent wave every time you head out. The surf breaks over a mix of gravel and boulders right in front of the Kahutara River mouth. It's not for beginners, so make sure you're comfortable in the water before tackling this spot.

The wave at Kahutara usually kicks off with a sucky and hollow section, followed by a thick walling phase that can really ramp up as it approaches the shorepound. You’ll want to hit it during lower to mid tides for the best ride. The ideal swell direction is from the southeast, but it can also pick up swells coming from the northeast and south. The wave typically handles about 3ft (around 0.9 meters) comfortably, breaking mainly over boulders. The wave breaks to the right, so keep that in mind when positioning yourself. If the wind is coming from the northwest, you'll likely have a better surfing experience. This spot is well-suited for intermediate surfers looking for a bit of a challenge.

Getting to Kahutara is pretty straightforward. From State Highway 1, you can park on either side of the bridge. The surf break is just a short walk down from the campground. If you’re looking to explore, just south of Kahutara is K Reef, which is another good wave, especially on an easterly swell. Overall, there are plenty of surf spots in the area, with over twenty options available if the conditions are right, so you won’t be short on choices.

Surf reports and surf forecasts nearby Kahutara

Clarence Point
Canterbury, New Zealand
Point break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Clarence River
Canterbury, New Zealand
Rivermouth break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Blue Duck Stream
Canterbury, New Zealand
Beach break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Mangamaunu
Canterbury, New Zealand
Point break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Graveyards (Kaikoura)
Canterbury, New Zealand
Point break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Meatworks
Canterbury, New Zealand
Reef break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Kahutara
Canterbury, New Zealand
Point break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
CC's
Canterbury, New Zealand
Beach break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Gore Bay
Canterbury, New Zealand
Beach break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Port Robinson
Canterbury, New Zealand
Point break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8

Readme

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.

Log your surf sessions to compare forecasts with real sessions and sharpen future predictions.

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:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm — the more you log, the smarter your forecasts get.

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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.
  • Medium certainty: Some disagreement; conditions may shift slightly.
  • Low certainty: Models diverge; treat forecast with caution.

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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