Yokohama Bay / Keawa’ula
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Hourly Forecast
Timezone: Pacific/Honolulu
⏱️s.
⚡️kJ
Saturday 13
Sunday 14
Monday 15
Tuesday 16
Wednesday 17
Thursday 18
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Yokohama Bay / Keawa’ula surf guide

Yokohama Bay, also known as Keawa’ula, is a scenic surf spot located on the West Side of Oahu, about fifteen minutes up Farrington Highway. This beach offers a stunning backdrop with its golden sand and lush green mountains that rise to the east. While it's known for its natural beauty, the surf here is the main attraction for many surfers looking to catch some waves.


The surf at Yokohama Bay includes a fast, hollow left-hander that can be tricky due to the steep take-off, breaking over shallow coral. On the other hand, the right-hander just up the beach offers gaping barrels on a solid NW swell, making it a favorite for those looking for a challenge. The conditions can range from head high (around 1.5 meters) to over 10 feet (around 3 meters), and it’s best on medium to high tides. When it’s on, you can expect some incredible waves, but both rights and lefts can be critical with their inside sections. Paddling out is relatively easy, but keep in mind that the currents can kick up and become tricky at times.


Generally, crowds at Yokohama Bay aren't an issue and the vibe is usually pretty mellow. However, it can get packed on weekends or during solid swells, so if you're scoring a good day, be respectful to the locals. The environment is pristine, and whether you're surfing, bodyboarding, or skimboarding, you’ll find that the area handles swells from various directions like NW, SSW, and even SW, with preferable wind conditions coming from the N to NE. Just watch out for the coral heads lurking below the surface; they can cause some damage if you're not careful!

Surf reports and surf forecasts nearby Yokohama Bay / Keawa’ula

Pua'ena Point
Hawaii, United States
Reef break, 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
Hale'iwa
Hawaii, United States
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
Haleiwa
Hawaii, United States
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
Avalanche
Hawaii, United States
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
Yokohama
Hawaii, United States
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
Yokohama Bay / Keawa’ula
Hawaii, United States
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
Kaena Point
Hawaii, United States
Reef break, 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
Makaha Point
Hawaii, United States
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
Makaha
Hawaii, United States
Reef break, 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
Ma'ili
Hawaii, United States
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

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.

With Surfnerd, no more "you should have been here yesterday"

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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