Richelieu Rock
Richelieu Rock · Thailand
Horseshoe-shaped pinnacle in open Andaman water, considered Thailand's best single dive. The whole structure is sheeted in purple and pink soft coral and anemones; whale sharks are seasonal regulars. Top of pinnacle barely breaks the surface at low tide.
Conditions
Depth
5 to 35 m
Advanced depths
Current
Often strong
Can pick up on the edge
Visibility
10 to 20 m
Clearest in the calm season
Water
27 to 30°C
Tropical wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 27 |
| Vis (m) | 20 | 20 | 25 | 25 | 15 | 10 | 10 | 10 | 10 | 15 | 20 | 20 |
| Current | Moderate | Moderate | Moderate | Moderate | Moderate | Strong | Strong | Strong | Strong | Moderate | Moderate | Moderate |
Your chances of seeing each animal
Whale shark
Last confirmed May 15, 2026 · 45 records
Very likely
Most dives
Schooling barracuda
Last confirmed Mar 6, 2026 · 1 records
Likely
About 6 in 10 dives
Tigertail seahorse
Last confirmed Mar 7, 2026 · 2 records
Sometimes
About 1 in 3 dives
Tomato anemonefish
Expected
Known here, not yet in recent logs
Cuttlefish
Expected
Known here, not yet in recent logs
Gear