Koh Sam Sao
เกาะสามเส้า
Three Pillars Island
Beginner
Peak Season
An island known for its natural stone arch and shallow snorkeling waters in the Ang Thong archipelago.
Depth Range
1–10m
Site Type
snorkeling
Ang Thong Marine Park
Visibility
5–15m
27–30°C
Getting There
1.5 hr from Koh Samui
~30 km NW of Koh Samui
Marine Life
Reef Fish
Starfish
Sea Cucumbers
Notable Features
- • Natural stone arch
- • Iconic photo spot
- • Shallow snorkeling
Best Time to Visit
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Peak
Good
Now
About Koh Sam Sao
Koh Sam Sao features a famous natural stone arch that has become one of Ang Thong's most photographed landmarks. The surrounding waters offer shallow snorkeling with a sandy bottom and scattered coral patches. It's a popular photo stop and light snorkeling destination on Ang Thong day trips.
Tips
Don't miss the stone arch viewpoint. Snorkeling is best close to the rocky edges.
Experience Required
None.
Location
GPS: 9.6300°N, 99.6850°E