Nihiwatu
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Hourly Forecast
Timezone: Asia/Makassar
โฑ๏ธs.
โšก๏ธkJ
Saturday 13
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Tap a forecast cell to explore conditions on the map.
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Nihiwatu surf guide

Nihiwatu, located on the stunning island of Sumba in Indonesia, is a surf spot that has gained attention for its exclusive vibe. Access is limited to surf camp clients, which means it's not your typical crowded surf scene. The resort here allows for only a handful of surfers at a time, making it a more relaxed experience compared to other spots. Staying in beautiful cottages can be pricey, but this also means avoiding the usual surf-slum vibe. The spot aims to generate more benefits for the local communities through the Sumba Foundation, which adds a nice touch to the overall experience.

The waves at Nihiwatu are primarily lefts, and they hold up nicely for different swell sizes, with the best conditions when the swell comes from the south or southwest. The swell can handle sizes from about 2 feet (0.6 meters) and gets particularly fast and hollow at low tide, making it perfect for intermediate surfers looking for a challenge. The optimal wind direction is northeast, which helps shape the waves just right. There are also some fat righthanders across the bay, and if you're up for a little adventure, you can reach nearby points with good rights and lefts by boat or car, taking about an hour to get there. Plus, there's a right-hand reef wave at the end of the beach, which is a half-hour walk away and works on smaller days.

For those planning to surf Nihiwatu, know that the reef breaks are uneven, so be prepared for varying conditions. The location is ideal for intermediate surfers wanting to step up their game, with options to change things up depending on the tide, whether it's low, mid, or high. Just keep in mind that access is limited, and it's all part of making the experience a bit more personal.

Surf reports and surf forecasts nearby Nihiwatu

Wara Point
Unknown Region, Unknown Country
Reef break
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Dedjoeng Wane
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Reef break
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Miller's Rights
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Reef break
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Wainukaka
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Rivermouth break
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Nihiwatu
Unknown Region, Unknown Country
Reef break
Sat 13
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Pantai Marosi
Unknown Region, Unknown Country
Reef break
Sat 13
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Pero Rights
Unknown Region, Unknown Country
Reef break
Sat 13
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Pero Lefts
Unknown Region, Unknown Country
Reef break
Sat 13
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Wainjapu
Unknown Region, Unknown Country
Reef break
Sat 13
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Mangkudu Lefts
Unknown Region, Unknown Country
Reef break
Sat 13
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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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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.

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