
China · Hainan
Sanya Bay
Sea
85.6°F
Air
–
UV
–
Bathtub
Above 28°C
More like this
Climate · monthly averages
Sea temperature by month
5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
68°F
72°F
75°F
79°F
82°F
86°F
90°F
93°F
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
MinMin °F
7373.5
7272.4
7574.9
7978.8
8382.9
8585.4
8584.8
8584.8
8584.5
8382.6
8079.8
7776.8
AvgAvg °F
7574.7
7474.2
7676.1
8080.0
8483.9
8685.9
8585.5
8685.6
8585.4
8383.2
8080.4
7877.5
MaxMax °F
7676.1
7675.6
7776.9
8181.4
8584.5
8786.7
8685.9
8786.5
8686.2
8483.9
8181.0
7878.3
Warmest in June (85.9°F). Coldest in February (74.2°F). Comfortable for swimming year-round.
About Sanya Bay
Sanya Bay traces 22 kilometres of palm-lined strand along the southern coast of Hainan Island, China's only tropical beach resort at 18° north, anchored by the artificial Phoenix Island archipelago rising from the water near the eastern end. East of the city, sheltered Dadonghai forms a compact family cove close to the old town, while Yalong Bay unfurls a 7-kilometre luxury-resort crescent considered the island's finest. Sea temperatures hold 27–29 °C from July through September; the local international airport is roughly 15 minutes by road.






