Treasure Island
Treasure Island is a long, barreling right reef break and one of the standout waves in the remote Banyak Islands chain off northern Sumatra. The wave offers quality barrel rides with a consistency that makes it the go-to spot for surf charters visiting the area. The Banyak archipelago provides a raw, frontier-style surf experience far removed from the more established Mentawai circuit, with warm water and uncrowded lineups year-round.
Treasure Island surf forecast
Model forecast for swell, wind and tide.
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Spot Details
CustomizeCustomize this spotSwell Requirements
- Optimal direction
- SW (220°)
- Direction range
- 200° - 240°
- Size range
- 1.2m - 3m
- Ideal size
- 2m - 2.6m
- Height multiplier
- 0.97×
- Ideal period
- 14s+
Wind Requirements
- Optimal direction
- ESE (112°)
- Offshore range
- 82° - 142°
Tide Requirements
- Optimal tide
- mid
- Optimal range
- 0.5m - 1.5m
Water temp
28°C
Wetsuit
Boardshorts / Rashguard
Difficulty
7/10
Crowd level
2/10
Access: Boat from Simeulue or Singkil
Frequently Asked Questions
What kind of wave is Treasure Island?
Treasure Island is a reef break in Banyak Islands, Indonesia, that mostly breaks right.
What swell works best at Treasure Island?
Treasure Island picks up swell from the SSW round to the WSW, and it's best when it's coming straight out of the SW. That's a tight window, so it needs the swell direction to line up. It starts working at around 1.2m and handles up to about 3m, with the sweet spot around 2 to 2.6m. Period matters too: aim for 14s or longer, as anything under 10s tends to be weak. These are the numbers our scoring uses, so treat them as a guide rather than a promise.
What wind is offshore at Treasure Island?
An ESE wind is dead offshore at Treasure Island, and anything from the E round to the SE keeps it clean. The morning is typically the best window, roughly 6am to midday. Light winds from other directions can still be fine; strong offshores can make it hard to get into waves.
What tide is best at Treasure Island?
Treasure Island is at its best around mid tide, roughly 0.5m to 1.5m on the local chart.
When is the best time of year to surf Treasure Island?
The most reliable run of swell at Treasure Island comes Apr to Oct. SW swell season (Apr-Oct), SE trade winds offshore.
How cold is the water at Treasure Island?
The water at Treasure Island averages around 28°C, so boardshorts or a rashguard will do. It shifts a few degrees through the year, so check the season before you pack.
Is Treasure Island good for beginners?
Not really. It's rated 7/10 for difficulty and suits experienced surfers. The lineup is usually quiet (crowd 2/10). Things to watch for: sharp, shallow reef (booties help) and being a long way from help.
How do I get to Treasure Island?
The nearest airport on our list is SQN. From there you need a boat to reach the break (we estimate around $80 USD, but confirm with an operator). Boat from Simeulue or Singkil.
What other surf spots are near Treasure Island?
The closest breaks we track are Joysticks (0.8 km) and Lolok Point (1.2 km), handy when Treasure Island isn't working.
Best Season
Peak: Apr-Oct
SW swell season (Apr-Oct), SE trade winds offshore
Getting There
Nearby Spots
Joysticks
🌊 Banyak's most consistent • Multi-section A-frame • Always something to ride
Lolok Point
🌊 Banyak left • Pairs with Treasure Island • Wind-shift versatility
Bawa
🌊 Indo Sunset Beach • Huge right barrels • Hinako Islands power
Tea Bags
🌊 Simeulue barrel • Less explored • Quality right reef
Dylan's Right
🌊 Simeulue Island right • Barrel rides • Tropical Indo
The Peak (Simeulue)
🌊 Simeulue A-frame • Range of swell angles • Picturesque setting