Balian
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Hourly
Timezone: Asia/Makassar
โฑ๏ธs.
โšก๏ธkJ
Friday 17
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Tap a forecast cell to explore conditions on the map.

Balian surf guide

Balian is a surf spot located in Bali that features a rivermouth rock shelf peak, making it a solid option for surfers looking for reliable waves. Known for its consistent swell, Balian tends to handle different swell sizes well, offering something for all skill levels. The area attracts a mix of surfers, from beginners to more experienced riders, but it may not always be the most suitable spot for everyone depending on the conditions.

The optimal swell direction for Balian is from the south, but it can also pick up swells from the west. The waves here generally break over uneven reef and sand, which can create a range of surfing experiences. You'll find both left and right breaks, with the left often focusing more on size and power. Swell sizes can be as small as 2ft (about 0.6 meters), and it can go much bigger, particularly when the conditions align. The waves can be quite shifty and steep, and while there can be barrels on the smaller inside waves over the shallower part of the reef, most rides are typically more of a wall to shoulder ride. It's also worth noting that the preferred wind direction is from the northeast, and the tide can work well at low, mid, and high levels.

For beginners, Balian can offer good opportunities to practice on smaller days. The variety in wave conditions makes it a versatile location as surfers can find what they are looking for, whether theyโ€™re just starting out or looking to improve their skills. Just be mindful of your surroundings and the local lineup.

Surf reports and surf forecasts nearby Balian

Medewi
Unknown Region, Unknown Country
Point break
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Balian
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Reef break
Sat 18
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Kedungu
Unknown Region, Unknown Country
Unknown break
Sat 18
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Seseh
Unknown Region, Unknown Country
Unknown break
Sat 18
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Canggu
Unknown Region, Unknown Country
Reef break
Sat 18
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Old Mans
Unknown Region, Unknown Country
Reef break
Sat 18
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Brawa Beach
Unknown Region, Unknown Country
Beach break
Sat 18
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Berawa Beach, Bali, Indonesia
Unknown Region, Unknown Country
Unknown break
Sat 18
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Seminyak
Unknown Region, Unknown Country
Beach break
Sat 18
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Kuta Beach
Unknown Region, Unknown Country
Beach break
Sat 18
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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.

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. 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.

With Surfnerd, no more "you should have been here yesterday"

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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