Batu Karas Point
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Hourly Forecast
Timezone: Asia/Jakarta
⏱️s.
⚡️kJ
Saturday 13
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Batu Karas Point surf guide

Batu Karas Point is a chill surf spot located in a fishing village that gives off a friendly vibe. It offers surfable waves year-round, with the dry season bringing in more consistent and bigger swells. However, during the wet season, the winds are usually more favorable. The waves here are known for wrapping around Batu Karas Point and breaking in front of JavaCove Beach Hotel, providing a nice setting for surfers looking for a fun session.

The best conditions for surfing happen when the swell is coming from the south, southeast, or southwest. The spot handles swell sizes starting at around 2 feet (0.6 meters) and can deliver some longer rides, especially when the swell is up. The right-breaking waves peel nicely over a sand bottom and tend to be a good fit for beginners, especially when the conditions are smaller. Low to mid-tide is when the waves perform best, and with west winds blowing, they can create clean, fun surf. The wave can link through to a second section for rides that can reach up to 400 meters, making it appealing for those looking for a longer ride.

Batu Karas Point is often crowded, but there’s a generally friendly vibe among surfers, so you shouldn't feel too stressed about sharing the waves. It’s a great place for improvers to work on their skills, especially when the waves are a bit smaller. Just remember to keep an eye on the tides and wind for the best experience!

Surf reports and surf forecasts nearby Batu Karas Point

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Jailbreak
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Pangandaran Beach
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Batu Layar
Unknown Region, Unknown Country
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Batu Mandi
Unknown Region, Unknown Country
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Sat 13
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Batu Hiu
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Beach break
Sat 13
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Batu Karas Reef
Unknown Region, Unknown Country
Reef break
Sat 13
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Batu Karas Point
Unknown Region, Unknown Country
Point break
Sat 13
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Bulak Benda
Unknown Region, Unknown Country
Reef break
Sat 13
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Ujung Genteng Harbour
Unknown Region, Unknown Country
Reef break
Sat 13
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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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