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Surf forecast for Treasure Island

Tide
โฑ๏ธs.
โšก๏ธkJ
Timezone:
Asia/Jakarta
Forecast updated:
02/07, 07:00 pm
Wind: SN UNITY Atmos
(20260701 12z)
Waves: SN UNITY WAVE
(20260701 12z)
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Timeline

Tomorrow Fri 03/07
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Treasure Island Surf Forecast Guide

Overview

Treasure Island is one of Indonesia's standout pointbreak-style reefs, a right-hander that reels for 200m or more beneath the untouched jungle of a protected conservation island. An easy roll-in feeds the first of up to four throwing tube sections, linked by rippable, stiff-lipped walls that let you join barrels together with plenty of open face. It breaks over live coral.

When It Works

The reef draws swell from south to southwest (S-SW) and lights up best on a southwest (SW) swell. It is usable from 1.2 m / 4 ft to 3.7 m / 12 ft, so it wants a bit of size to get going and still holds its shape well into the bigger end. Consistency is moderate, which means worthwhile windows rather than surf every day, and it is medium to big swells that turn on the full run of tube sections.

Wind and Tide

Look for northwest (NW) offshore wind to groom the walls. The reef works across low, mid, and high tide, with a rising tide generally the better call.

Local Tips

The main wave suits intermediate surfers, and with plenty of waves to go round there is room to spread out even when the lineup gets moderately busy. The outside indicator reefs are strictly for barrel-crazy experts. Tucked further inside the bay, Minis is a more playful right with a short tube and a workable face on larger swells.

Access

The setup sits off Bangkaru, an uninhabited island with no mammals and, handily, free of mosquitoes.

Surf spots near Treasure Island

Gunturs
Aceh, Indonesia
Reef break
Thu 2
Fri 3
Sat 4
Sun 5
Mon 6
Lolok Point
Aceh, Indonesia
Reef break
Thu 2
Fri 3
Sat 4
Sun 5
Mon 6
Dindos
Aceh, Indonesia
Reef break
Thu 2
Fri 3
Sat 4
Sun 5
Mon 6
Treasure Island
Aceh, Indonesia
Reef break
Thu 2
Fri 3
Sat 4
Sun 5
Mon 6
Lizards Nest
Aceh, Indonesia
Reef break
Thu 2
Fri 3
Sat 4
Sun 5
Mon 6

Frequently asked questions

What are good surfing conditions for Treasure Island?

Treasure Island is usually best with swell from south to southwest (S-SW), ideally southwest (SW) around 1.2 m / 4 ft to 3.7 m / 12 ft, northwest (NW) offshore wind, and any tide.

Where is the surf spot Treasure Island?

Treasure Island is a surf spot in Pulo Batal, Aceh, Indonesia.

What is the surf break like at Treasure Island?

Treasure Island is a right reef break over live coral. Expect a moderate crowd.

What surfing skill level is Treasure Island suitable for?

Treasure Island can suit intermediate surfers.

Is Treasure Island beginner friendly for surfing?

Treasure Island is better suited to intermediate surfers.

How consistent is the surf at Treasure Island?

Treasure Island has moderate surf consistency for Aceh, Indonesia.

What surf spots are near Treasure Island?

Other nearby surf spots are Dindos, Gunturs, Lolok Point, and Lizards Nest.

What swell direction works for surfing at Treasure Island?

Treasure Island can work with swell from south to southwest (S-SW); southwest (SW) is usually best.

What swell size works for surfing at Treasure Island?

Treasure Island usually works with swell around 1.2 m / 4 ft to 3.7 m / 12 ft.

What wind direction is best for surfing at Treasure Island?

Northwest (NW) offshore wind is usually best at Treasure Island.

What wind direction is offshore for surfing at Treasure Island?

Northwest (NW) is offshore at Treasure Island.

What tide works best for surfing at Treasure Island?

Treasure Island can work on all tides. A rising tide is usually better here.

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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 chooses the "dominant wave" using spot-adjusted surf energy (depth + directional fit). This is usually the first swell partition, but during local storms it can switch to wind waves. If that happens, values are shown in gray and italic.

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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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.