Kohala Lighthouse
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Hourly Forecast
Timezone: Pacific/Honolulu
⏱️s.
⚡️kJ
Friday 29
Saturday 30
Sunday 31
Monday 01
Tuesday 02
Wednesday 03
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Kohala Lighthouse surf guide

Kohala Lighthouse is a somewhat secluded surf spot located on the Big Island of Hawaii. It’s not overly crowded, making it a nice place for those looking to escape the busier surf spots. The area is known for its beautiful scenery, with cliffs surrounding the bay, which adds to the overall vibe of the location. However, be aware that it is primarily a spot for advanced surfers due to the tricky conditions and local reputation.

The main peak presents a solid left that peels nicely across the inside of the bay. It’s somewhat sheltered from the northeast trades by the cliffs, making it rideable on various days. There’s also a right off the peak that can barrel hard but be mindful of rocky outcrops that can cut short your ride. On bigger swells, you can find rights breaking off the lighthouse itself, extending down the headland, along with a larger peak that seems to show up further out. The left-hand wave on the other side of the headland isn’t as popular due to the spooky water and the presence of tiger sharks that people often mention.

This spot works best with a north swell direction, handling swell sizes around 3 feet (about 0.9 meters). It’s great for expert surfers looking for a challenge, and the waves break over uneven reef, producing both left and right waves. The preferred wind direction is from the south, and it can be surfed at any tide height—low, mid, or high—as the conditions often vary. If the lefts are getting too crowded, it’s a good idea to check out the rights for a chance at less competition.

Surf reports and surf forecasts nearby Kohala Lighthouse

Hana Bay
Hawaii, United States
Reef break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Waipio Valley
Hawaii, United States
Beach break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Kohala Lighthouse
Hawaii, United States
Reef break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Kawaihae Breakwater
Hawaii, United States
Reef break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Kawaihae
Hawaii, United States
Jetty break, Reef break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Hapuna Point
Hawaii, United States
Reef break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Anaehoomalu Bay
Hawaii, United States
Point break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Keawaiki Bay
Hawaii, United States
Reef break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Kiholo Bay
Hawaii, United States
Reef break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Mahaiula Bay
Hawaii, United States
Reef break
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
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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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