Snorkel among vibrant coral gardens and spot sea turtles in the crystal-clear waters surrounding these protected islands. Rangers can direct you to the best beaches for swimming and less crowded hiking trails across Koh Similan's distinctive boulder formations.
The hottest months are usually March and April, with an average temperature of 27°C, while the coldest months are January and February, with an average of 26°C. The rainiest months in Koh Similan are September, October, July and August, with each month seeing an average of 373 mm of rainfall.