Sandy Beach
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Hourly Forecast
Timezone: Pacific/Honolulu
⏱️s.
⚡️kJ
Wednesday 03
Thursday 04
Friday 05
Saturday 06
Sunday 07
Monday 08
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Sandy Beach surf guide

Sandy Beach is a well-known surf spot where surfers come to test their skills. It's popular for its powerful waves and can get quite crowded when the conditions are right. Located in a beautiful area, the beach offers a lively vibe, especially when it’s firing. It attracts plenty of surfers looking for some intense action.

The surf at Sandy Beach is not for the faint-hearted. It works best with swells coming from the south and can handle sizes starting from around 2ft (0.6m). The waves break over sand, providing both lefts and rights, which adds to the excitement. When swells from the east and southwest hit, you can expect some heavy shorebreaks. This is definitely a place for experts; the conditions can be challenging, especially when it’s on, so make sure you're prepared. Preferable wind is from the northwest, and waves generally perform well at low, mid, and high tides.

Given its reputation, you can expect to see quite a few advanced surfers in the lineup. It’s important to stay aware of your surroundings and know that this is a spot where only skilled surfers thrive. If you're up for it, Sandy Beach can provide some unforgettable rides, just make sure you’re up to the challenge!

Surf reports and surf forecasts nearby Sandy Beach

Popoia Island Kailua
Hawaii, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Makapu’u
Hawaii, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Makapu'u
Hawaii, United States
Beach break, Reef break, Point break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Sandy Beach
Hawaii, United States
Beach break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Sandy Beach
Hawaii, United States
Beach break, Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Secrets/Toes
Hawaii, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Black Point
Hawaii, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Cliffs
Hawaii, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Diamond Head
Hawaii, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Tonggs
Hawaii, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
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"Great Forecasts. Nothing more, nothing less."
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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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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