Koh Samet is a scenic island located off the coast of Rayong province in eastern Thailand, famous for its pristine white-sand beaches, crystal-clear turquoise waters, and laid-back atmosphere. The island is part of Khao Sam Roi Yot National Park and offers a perfect blend of natural beauty and accessibility, making it an ideal escape from Bangkok without venturing too far.
Koh Samet delivers stunning beaches and water activities in a compact, easily accessible island setting perfect for weekend getaways. The combination of affordable accommodation, excellent seafood, and peaceful coastal charm makes it one of Thailand's best-kept secrets near the capital.
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Check live entry documents and quarantine rules for Thailand.
Ratings & reviews from Google Maps
Time
Full day
Cost
Free
Effort
Easy
per person with guide and equipment
Time
Half day
Cost
THB 400*–THB 800*
Effort
Easy
per person, includes fuel and guide
Time
Full day
Cost
THB 800*–THB1.5k*
Effort
Easy
full PADI certification course
Time
2-3 days
Cost
THB6k*–THB10k*
Effort
Moderate
Time
2 hours
Cost
Free
Effort
Easy
per person with boat and equipment
Time
Half day
Cost
THB 600*–THB1.2k*
Effort
Easy
per person with guide
Time
Half day
Cost
THB 500*–THB 900*
Effort
Easy
This destination has a temperate climate with temperatures ranging from 26°C to 30°C annually.
Climate averages based on 10-year historical data · Open-Meteo
Pleasant weather, lighter crowds — the sweet spot.
Busiest months — book stays & transport early.
Quietest window with the lowest prices.
From Rayong town, take Highway 3 south toward Ban Phe. The pier at Ban Phe is the main departure point for speedboats and ferries to Koh Samet, located just 8 km away with a 45-minute ferry ride across turquoise waters.
