Hanalei Bay
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Timezone: Pacific/Honolulu

Hanalei Bay surf guide

Hanalei Bay is a popular surf spot located on the north shore of Kauai, Hawaii. This bay is known for its beautiful scenery and a variety of surf breaks concentrated in a relatively small area. You can access the water easily either from the Hanalei Pier or from the keyhole off Puu Poa Beach. The main break is a long right point that can provide rides of up to 300 yards over a live coral reef. Remember that it's usually crowded, so be prepared to share the waves.

The waves at Hanalei Bay can range from head high to 3X overhead (about 3 to 10 meters). The optimal swell direction is north, and it handles swell sizes from around 10ft to 15ft (3 to 4.6 meters). The right point break can produce powerful waves with some barrel sections, especially when the swell is coming from the northwest to northeast. It's best surfed during low to mid tides and prefers a southeast wind. For your board, you can use a shortboard, bodyboard, or a gun depending on the size of the swell.

During winter, the conditions are usually more favorable for surfing, but you can also find rideable waves in autumn and spring. If you want to explore more options, there are other breaks around the bay like PineTrees and Waikokos, which you might check out if Hanalei isn't working for you. Just keep in mind that the local vibe can be a bit competitive, so humility and respect go a long way here.

Surf reports and surf forecasts nearby Hanalei Bay

Unreals
Hawaii, United States
Point break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Anahola Bay
Hawaii, United States
Beach break, Reef break, Point break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Kealia
Hawaii, United States
Beach break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Kalihiwai
Hawaii, United States
Point break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Horners
Hawaii, United States
Reef break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Hideaways
Hawaii, United States
Reef break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Hanalei Bay
Hawaii, United States
Reef break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tunnels
Hawaii, United States
Reef break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Polihale
Hawaii, United States
Beach break, Reef break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Polihale
Hawaii, United States
Beach break
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Confidence

Confidence tells you how much the weather models agree on the forecast.

  • High confidence: Models agree closely; forecast is reliable.
  • Medium confidence: Some disagreement; conditions may shift slightly.
  • Low confidence: Models diverge; treat forecast with caution.

We calculate the wind confidence by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. For wave certainty we compare height, period and direction, also on multiple models. 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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Readme

Welcome! If youโ€™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:

๐Ÿ”ฎ 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.

๐Ÿ’จ Wind section

The first row on the table (with the ๐Ÿ’จ icon) shows wind speed, direction and gust. The more the wind speed the more aggressive the color (from blue, green, orange to red).

๐ŸŒŠ 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.

๐ŸŒ’ 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 โ€” handy when arrows overlap.

Forecast Cheat Sheet

Short on time? Focus on wave energy. Itโ€™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. Hereโ€™s the scale:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm โ€” the more you log, the smarter your forecasts get.

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