Lagundri Bay - Indicators
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โฑ๏ธs.
โšก๏ธkJ
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Timezone: Asia/Jakarta
Wind: GFS (20251030 12z)
Waves: GFS WAVE (20251030 12z)

Lagundri Bay - Indicators surf guide

Lagundri Bay - Indicators is a surf spot located in one of the more picturesque areas for surfing. This bay has gained some attention over the years, but itโ€™s not a place where youโ€™ll find crowds every day. The wave setup here has gone through changes since the 2005 earthquake, but it still offers some unique surfing experiences. Itโ€™s known for its beautiful scenery, which adds to the vibe even if the surf can be hit or miss at times.

This spot handles swell sizes up to about 4 feet (1.2 meters) and works best with south to southwest swell directions. When the conditions are on point, you can expect a nice right-breaking wave that can get pretty hollow, particularly on the right day. The wave breaks over dead coral and can really pinch, which means youโ€™ll want to wait for that perfect moment to take off. Experts will enjoy the challenge it presents, especially during mid to high tide with north winds. Just keep in mind that it's important to kick out quickly before the end section, which can be tricky.

Only a handful of local surfers and real dedicated riders show up when itโ€™s firing, so you wonโ€™t find too many people in the lineup. Itโ€™s a good place for those with experience looking for something a bit different from the usual surf scene. Remember, itโ€™s not an everyday wave, but when it works, it can be pretty satisfying for those who can handle it.

Surf reports and surf forecasts nearby Lagundri Bay - Indicators

Lizards Nest
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
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Afulu
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
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Sat 8
Sun 9
Mon 10
Asu
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
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Tue 4
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Mon 10
Bawa
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
Sun 2
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Tue 4
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Mon 10
Hilisataro
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
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Fri 7
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Mon 10
Shark Hole
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
Sun 2
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Tue 4
Wed 5
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Mon 10
Hiliduha / Dipi
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
Sun 2
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The Machine
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
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Lagundri Bay - The Point
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
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Mon 10
Lagundri Bay - Indicators
Unknown Region, Unknown Country
Reef break
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Mon 10
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Confidence

Confidence tells you how much the weather models agree on the forecast.

  • High confidence: Models agree closely; forecast is reliable.
  • Medium confidence: Some disagreement; conditions may shift slightly.
  • Low confidence: Models diverge; treat forecast with caution.

We calculate the wind confidence by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. For wave certainty we compare height, period and direction, also on multiple models. They are weighted, meaning that some models count more than others, depending on how good they are for a certain spot.

Readme

Welcome! If youโ€™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:

๐Ÿ”ฎ 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.

๐Ÿ’จ Wind section

The first row on the table (with the ๐Ÿ’จ icon) shows wind speed, direction and gust. The more the wind speed the more aggressive the color (from blue, green, orange to red).

๐ŸŒŠ 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.

๐ŸŒ’ 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 โ€” handy when arrows overlap.

Forecast Cheat Sheet

Short on time? Focus on wave energy. Itโ€™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.

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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. Hereโ€™s the scale:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm โ€” the more you log, the smarter your forecasts get.

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