Reef
right
Level 7/10

Treasure Island

Banyak Islands, Indonesia
🪸Sharp reef🏝️Remote

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.

10-Day Forecast
Thu6
70
Good
2.1m@16s
5km/h
Fri7
62
Fair
2.2m@16s
10km/h
Sat8
71
Good
2.2m@16s
6km/h
Sun9
71
Good
2.0m@15s
7km/h
Mon10
70
Good
1.8m@15s
10km/h
Tue11
70
Good
1.8m@17s
3km/h
Wed12
69
Good
1.8m@17s
6km/h
Thu13
63
Fair
1.6m@15s
6km/h
Fri14
62
Fair
1.8m@17s
6km/h
Sat15
67
Good
1.3m@15s
4km/h
5+ days out, less certain

Today's Conditions

Find Flights
Best session: MorningAM 2 km/h · PM 13 km/h · Tide at 9am (0.4m)
Swell
2.1m
SSW(207°)
Score: 17/25
Period
16s
Long period groundswell
Score: 25/25
Wind
5km/h
W(278°)
Score: 18/25
Weather
28°C
0.1mm92%
First light 6:01amSunrise 6:31amSunset 6:43pmLast light 7:13pm
Secondary1.0mConfidence
100%

Location & Conditions

Loading map...
0°45°90°135°180°225°270°315°NESW
Swell
Wind
Showing forecast for today

Hourly Forecast, Tide & Strike Windows

No ideal tide during daylight todayIdeal tide: 0.5–1.5m
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
°C
26°
27°
30°
28°
27°
27°
29°
30°
30°
29°
27°
27°
30°
30°
29°
26°
27°
29°
29°
27°
26°
28°
29°
30°
28°
25°
26°
29°
29°
27°
26°
27°
29°
29°
28°
26°
27°
29°
29°
28°
25°
27°
29°
29°
28°
26°
28°
30°
29°
28°
3m1.5
sec
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
15s
15s
15s
15s
15s
15s
15s
15s
15s
15s
17s
17s
17s
17s
17s
17s
17s
17s
17s
17s
15s
15s
15s
15s
15s
17s
17s
17s
17s
17s
15s
15s
15s
15s
15s
swell
windkm/h
2g7
1g17
2g14
18g43
9g23
8g16
10g23
12g29
7g31
11g26
9g18
11g28
4g18
4g17
5g16
5g9
8g24
5g23
7g25
6g26
8g20
7g23
11g30
11g32
10g33
2g15
2g23
3g17
6g35
3g30
3g15
3g18
6g21
8g23
10g25
7g18
4g19
6g22
8g25
7g27
7g22
4g21
4g19
8g21
11g26
1g15
2g17
5g21
7g24
7g26
tidem
4:20am0.2m
9:50am0.4m
4:30pm0.1m
6:00am0.3m
11:10am0.4m
5:15pm0.1m
1:10am0.6m
9:00am0.2m
1:30pm0.3m
6:30pm0.2m
2:45am0.6m
10:06am0.2m
3:30pm0.3m
8:30pm0.1m
3:47am0.7m
11:00am0.1m
4:18pm0.4m
9:45pm0.1m
4:47am0.7m
11:40am0.0m
5:12pm0.4m
5:30am0.8m
12:16pm0.0m
6:00pm0.5m
6:10am0.8m
12:50pm0.0m
6:37pm0.6m
6:45am0.8m
1:16pm0.0m
7:12pm0.7m
1:07am0.1m
Ideal tideStrike windowNight

Tide times today

4:20 am
Low tide - 0.19m
9:50 am
High tide - 0.41m
4:30 pm
Low tide - 0.10m
Times shown in spot-local time.

Strike Score Breakdown

70
Good
Components
Swell Direction16/25
Swell Size17/25
Swell Period25/25
Wind18/25
Raw Score76/100
Adjustments
🌊 Tide-1
💨 Gusty Wind-5
Adjusted Score70/100
Confidence
Multiplier×1.00
Final Score70
🌊 Slightly below optimal tide

Plan Your Strike

Return flights to SQN, departing today with a 5-day trip window.

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Swell Requirements

Optimal direction
SW (220°)
Direction range
200° - 240°
Size range
1.2m - 3m
Ideal size
2.5m
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 tide is best at Treasure Island?

Treasure Island works best on a mid tide, ideally between 0.5m and 1.5m on the local tide chart. The tide chart above shows today’s strike window.

What wind direction is offshore at Treasure Island?

Offshore wind at Treasure Island blows from the ESE (112°). Anything in the 82° to 142° range grooms the faces; outside it, expect chop or bumpy conditions.

What swell size and direction work best at Treasure Island?

Treasure Island wants SW swell (200° to 240°) between 1.2m and 3m, with a period of 14s or more for quality waves.

When is the best time of year to surf Treasure Island?

The main season at Treasure Island is Apr-Oct. SW swell season (Apr-Oct), SE trade winds offshore

How do I get to Treasure Island?

Fly into SQN, then allow about 0 minutes by road, plus a boat transfer (around $80 USD). Boat from Simeulue or Singkil

What kind of wave is Treasure Island?

Treasure Island is a reef break, a right-hander. Difficulty is rated 7/10.

Best Season

Peak: Apr-Oct

SW swell season (Apr-Oct), SE trade winds offshore

Getting There

Airport
SQN
Drive time
0 min
Boat required
$80
Data quality
verified

Strike Log

Community Discussion