Koh Larn, also known as Coral Island, is a scenic tropical island located off the coast of Bang Saen in Eastern Thailand. Known for its pristine beaches, coral reefs, and vibrant marine life, the island offers a peaceful escape with water activities and snorkeling opportunities. It is popular for day trips and weekend retreats from nearby cities like Chachoengsao and Rayong.
Coral Island offers some of the best accessible snorkeling and diving experiences in Eastern Thailand with healthy coral formations and tropical fish populations. The island provides a relaxing beach destination without the extreme crowds found at more famous Thai island resorts.
Customize starting city and duration for a tailored plan.
Check live entry documents and quarantine rules for Thailand.
A quieter, less crowded beach on Koh Larn with excellent snorkeling opportunities and fewer tourists than the main beaches.
A sheltered, sandy beach on the western side of the island ideal for swimming and watching sunsets.
A small but well-maintained aquarium on the mainland showcasing local marine species and tropical fish native to the Eastern Gulf.
includes boat and equipment rental
Time
Half day
Cost
THB 500*–THB1.2k*
Effort
Easy
Time
Full day
Cost
Free
Effort
Easy
includes multiple island visits and meals
Time
Full day
Cost
THB 800*–THB1.8k*
Effort
Easy
includes guide, equipment, and certification course if needed
Time
Half day to Full day
Cost
THB2k*–THB4k*
Effort
Moderate
group tour or private charter
Time
2-3 hours
Cost
THB 400*–THB 900*
Effort
Easy
Time
2-3 hours
Cost
Free
Effort
Easy
This destination has a temperate climate with temperatures ranging from 26°C to 31°C annually.
Climate averages based on 10-year historical data · Open-Meteo
From Chachoengsao, take Highway 3 toward Bang Saen coastal area. From Bang Saen pier, speedboats and long-tail boats depart regularly to Koh Larn, taking approximately 30-45 minutes depending on sea conditions.