Thailand · Racha Islands
Racha Yai
Also known as: Koh Racha Yai, Raya Yai
Best time to dive
January to December; May to October
What you might see
- BarracudaPossible
- Manta rayPossible
- Moray eelLikely
Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.
Certification & difficulty
Advanced Open Water - advanced conditions (currents/depth); dive within your training.
Snorkelling
Snorkel-friendly - Yes - excellent, shallow bays with hard coral gardens; one of Phuket's most popular snorkel day-trip destinations
Safety notes
Lionfish near artificial/rocky structures; shared shallow bays with snorkelers and boat traffic - watch for surface congestion
Permits & fees
Permits and operators change - confirm before booking.
Location
Nearest hub: Chalong, Phuket
This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.