Sail Rock
Koh Samui & Ang Thong · Thailand
Isolated granite pinnacle rising 15m above the surface and 40m below, featuring a dramatic vertical chimney swim-through. Renowned for massive schools of chevron barracuda, abundant pelagic fish, and frequent whale shark encounters. Strong currents and thermoclines common below 25m.
Conditions
Depth
5 to 40 m
Advanced depths
Current
Can be moderate
Can pick up on the edge
Visibility
15 to 25 m
Clearest in the calm season
Water
27 to 30°C
Rash guard
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 27 | 27 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 27 |
| Vis (m) | 15 | 15 | 20 | 20 | 20 | 15 | 15 | 15 | 15 | 10 | 10 | 10 |
| Current | Gentle | Gentle | Gentle | Gentle | Gentle | Moderate | Moderate | Moderate | Moderate | Moderate | Strong | Moderate |
Your chances of seeing each animal
Chevron barracuda
Sometimes
About 1 in 3 dives
Bigeye trevally
Sometimes
About 1 in 3 dives
Giant grouper
Sometimes
About 1 in 3 dives
Moray eel
Sometimes
About 1 in 3 dives
Batfish
Sometimes
About 1 in 3 dives
Whale shark
Rare
Now and then
Gear