

Best for intermediate divers, 5-35m, boat entry, moderate current.
Richelieu Rock is a limestone pinnacle in the Andaman Sea that reaches the surface only at low tide. The site features a reef and wall topography that descends to depths of 35 metres, with an average depth of 25 metres. Access is by boat only, as the site is located 45 kilometres from the shore. Divers should be prepared for moderate currents and occasional surf. Visibility ranges from 10 to 35 metres, and water temperatures typically sit between 27 and 30 degrees Celsius, though thermoclines can cause drops to 25 degrees Celsius. This site is suited for intermediate divers.
9.36341, 98.02206
The site is horseshoe-shaped, and there is always a side facing away from the current, which makes it accessible for less experienced divers.
Accessible via boat, typically liveaboard trips or day trips from the Surin Islands or Khao Lak.
Recorded at this site
Depth
5-35m
Visibility
10-35m
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
27-30°C
Current
Moderate
Typical Dive
60 min
Best Time
Feb, Apr, May, Nov
The site ranges from 5 to 35 metres deep, with an average depth of 25 metres.
No, Richelieu Rock is rated for intermediate divers due to the presence of moderate currents and surf.
Access is by boat only, as the pinnacle is located 45 kilometres from the shore.
The best months to visit are February, April, May, and November.
Diving at Richelieu Rock in Khao Lak requires the following certifications: Open Water. Always dive within your training limits.
A rashguard or 2mm shorty is recommended for diving at Richelieu Rock in Khao Lak. Water temperatures range from 27°C to 30°C.
The best months to visit Richelieu Rock in Khao Lak are February, April, May, and November. Conditions outside these months can still be good but are less predictable.
Divers at Richelieu Rock in Khao Lak should be aware of stonefish, lionfish. These encounters are generally rare and avoidable with proper awareness. Follow local safety guidance and maintain a respectful distance from all marine life.
Expect moderate currents at Richelieu Rock in Khao Lak. Good buoyancy control and some drift diving experience is helpful.
Visibility at Richelieu Rock in Khao Lak typically ranges from 10 metres to 35 metres. Conditions vary with weather, tides, and seasons.