Rag's Left
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Hourly Forecast
Timezone: Asia/Jakarta
⏱️s.
⚡️kJ
Thursday 18
Friday 19
Saturday 20
Sunday 21
Monday 22
Tuesday 23
Tap a forecast cell to explore conditions on the map.
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Rag's Left surf guide

Rag's Left is a surf spot located in a picturesque setting, known for its left-hand reef break. This spot can be a bit tricky, as recent geological shifts have affected how the waves break. While it used to offer more consistent and rideable waves, you’ll now find some challenging boils and shallow coral sections. The wave starts to mellow out after the first few hundred meters, especially as it wraps around Pitojetsabeu Island.

The surf here generally prefers a SouthWest swell, and it can handle sizes up to about 2 meters (6 ft). The final 100 meters of the wave is usually the most approachable, making it a decent spot if you’re looking to catch a ride after navigating the more difficult initial sections. Expert surfers will need to be ready for an air-drop and might want to bring a pintail board to help manage the bigger days. Rag's Left isn't as consistent as nearby Thunders, and the ideal wind for this spot is from the SouthEast, so keep that in mind when planning your session. It's also worth noting that you can surf here at low, mid, or high tide, giving some flexibility in your outing.

If you're hitting Rag's Left, be prepared for a mix of good and tough conditions. It might not be a perfect spot every day, but the challenges can reward those who know how to handle them. Just remember to respect the reef and the wave so you can enjoy what Rag's Left has to offer.

Surf reports and surf forecasts nearby Rag's Left

Silabu
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Macaronis
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Macaronis Right
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Greenbush
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Roxys
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Rag's Left
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Rag's Right
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Thunders
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Sibigau Rights
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Solawi
Unknown Region, Unknown Country
Reef break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29

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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