Outside Grupuk
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Swl 1
8.0ft 14s.
1174kJ
Wnd
20mph
21mph
Hourly Forecast
Timezone: Asia/Makassar
⏱️s.
⚡️kJ
🔮
🌒
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Outside Grupuk surf guide

Outside Grupuk is a surf spot located on the southern coast of Lombok. It's known for its unique setup and can be a fun place to catch some waves. Despite its impressive look, the surfing experience can be variable, making it a mixed bag depending on the conditions. The lively atmosphere often draws a crowd, particularly when the waves are working well.

The wave at Outside Grupuk typically breaks to the right over live coral, making it ideal for those who are comfortable riding rights. It can handle swell sizes around 3 feet (0.9 meters) and favors swells coming from the southwest and southeast. While it breaks consistently on any south swell, be cautious of southern hemi winds, as they can easily mess up the conditions. On smaller days, it’s great for beginners to improve their skills, while intermediates may find it challenging when the swell picks up. Mid to high tides are the best times to surf here for optimal conditions.

Given its setup, Outside Grupuk can get crowded, especially when the waves are good. If you’re looking for some space to maneuver, a solid understanding of tide and wind conditions will help you find the best times to paddle out. Northwest winds are preferable, as they tend to keep the surf cleaner and more enjoyable. Keep an eye on conditions, and you might just catch a fun session.

Surf reports and surf forecasts nearby Outside Grupuk

Inside Ekas
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Outside Ekas
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Awang
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Inside Grupuk
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Don-Don
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Reef break
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Tanjung A'an
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Outside Grupuk
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Segar
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Kuta
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Air Guling
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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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Forecast Cheat Sheet

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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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On the map, click a metric label to bring that arrow to the front — handy when arrows overlap.

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
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Bad or No Data

Session logs also feed the algorithm — the more you log, the smarter your forecasts get.

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