A-Frames
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Hourly Forecast
Timezone: Asia/Jakarta
⏱️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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A-Frames surf guide

A-Frames, also known as Kandies Left, is a surf spot that attracts many surfers looking for some fun waves. This spot is pretty chill, with a large playing field that welcomes S swell, making it a good choice when other locations aren’t pulling in the right conditions. It's a place where boat crews love to hang out, sheltered in the safe anchorage, ready to catch some waves. With less daunting line-ups, A-Frames offers a good vibe for those wanting to enjoy a day on the water.

The waves here typically break over live coral, creating both left and right options for riding. You can expect swell sizes starting around 2ft (0.6 meters) up to larger sets. The lefts are generally what everyone’s after, but there are some fun rights as well. For the best experience, it’s good to wait for a low to mid tide, and the preferable wind direction is from the north. Although the waves aren’t too shallow, it's worth noting that if you get caught inside, you might face a long paddle out when the size picks up. This spot is best suited for intermediate surfers, so be ready to drop, snap, and tuck into those peaky waves.

While you’re out there, keep an eye on the swell and wind conditions. A-Frames handles various swell sizes well, but being aware of the optimal conditions can help you score better waves. With the right setup, it can be a super fun spot to ride when the conditions align just right.

Surf reports and surf forecasts nearby A-Frames

Pirates
Unknown Region, Unknown Country
Reef break
Thu 28
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Nipussi
Unknown Region, Unknown Country
Reef break
Thu 28
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Hideaways - Mentawai
Unknown Region, Unknown Country
Reef break
Thu 28
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Bank Vaults
Unknown Region, Unknown Country
Reef break
Thu 28
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Mon 1
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Chubbies
Unknown Region, Unknown Country
Reef break
Thu 28
Fri 29
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Mon 1
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No-Kandui
Unknown Region, Unknown Country
Reef break
Thu 28
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Mon 1
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Karamba
Unknown Region, Unknown Country
Reef break
Thu 28
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A-Frames
Unknown Region, Unknown Country
Reef break
Thu 28
Fri 29
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Sun 31
Mon 1
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Four Bobs
Unknown Region, Unknown Country
Reef break
Thu 28
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Mon 1
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Rifles
Unknown Region, Unknown Country
Reef break
Thu 28
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Sun 31
Mon 1
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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.

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"

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