Beng Bengs
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Hourly Forecast
Timezone: Asia/Jakarta
⏱️s.
⚡️kJ
Wednesday 03
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Monday 08
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Beng Bengs surf guide

Beng Bengs is a surf spot that offers a friendly left reef break. It can handle small to fairly chunky swells, making it a pretty accessible place for surfers looking to catch some waves. This spot is best when the swell comes from the south or west, with the optimal direction being south-west. It's a place where you can enjoy different conditions, depending on the tide and swell size.

The waves here work well with swell sizes of around 2ft (0.6 meters) and can bring in fast walls with a couple of hits. While it doesn’t really produce barrels, it’s decent enough for intermediate surfers. The break might end fairly abruptly on a protruding reef, so be careful if you get caught; you’ll likely have to wash over the reef and paddle around to the right. The east winds are preferable, and it can work during low, mid, or high tides, so check the conditions before heading out.

Keep in mind that Beng Bengs is more suited for those with some surfing experience. Since the spot is a reef break, it can be tricky if you’re not careful. Just watch out for that sharp end section of the reef! Overall, it’s a good option when other spots like Ebay are not quite hitting.

Surf reports and surf forecasts nearby Beng Bengs

Pearlers
Unknown Region, Unknown Country
Reef break
Wed 3
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Beng Bengs
Unknown Region, Unknown Country
Reef break
Wed 3
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E-Bay
Unknown Region, Unknown Country
Reef break
Wed 3
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Pitstops
Unknown Region, Unknown Country
Reef break
Wed 3
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Sun 14
Pirates
Unknown Region, Unknown Country
Reef break
Wed 3
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Nipussi
Unknown Region, Unknown Country
Reef break
Wed 3
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Hideaways - Mentawai
Unknown Region, Unknown Country
Reef break
Wed 3
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Sat 6
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Bank Vaults
Unknown Region, Unknown Country
Reef break
Wed 3
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Chubbies
Unknown Region, Unknown Country
Reef break
Wed 3
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No-Kandui
Unknown Region, Unknown Country
Reef break
Wed 3
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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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