China
Boundary Island
About this Dive Site
Description
Boundary Island, also known as Fenjiezhou Island, is a premier diving destination in Sanya, celebrated for its vibrant coral gardens and abundant marine biodiversity. Explore crystal-clear waters teeming with tropical fish, graceful sea turtles, and a kaleidoscope of other fascinating sea creatures, making it an unforgettable underwater adventure.
Best Time to Dive
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 24°C | 25°C | 27°C | 29°C | 30°C | 31°C | 31°C | 31°C | 30°C | 29°C | 27°C | 25°C |
Peak Season
March, April, May, October, November
Jan
Clearer waters after typhoon season, good for exploring reefs.
Feb
Whale shark sightings are possible in early spring.
Mar
Increasing water temperatures, good coral visibility.
Apr
Manta ray season begins, excellent for pelagic encounters.
More monthly highlights
May
Peak manta ray season, warm waters.
Jun
Start of the rainy season, potential for plankton blooms attracting smaller fish.
Jul
Rainy season continues, visibility can be reduced by rainfall and runoff.
Aug
Still in the rainy season, occasional typhoons can impact conditions.
Sep
End of the rainy season, waters begin to clear.
Oct
Excellent visibility, good chance of seeing turtles and larger reef fish.
Nov
Pleasant temperatures and clear waters, good for macro photography.
Dec
Cooler but still good diving conditions, less crowded.
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