Measurements:
°C
°F
CURRENT WEATHER
20:33
Hainan
66°F
NW 5 mph
Feels like: 66°F
Precip: 0%
World Resorts China Hainan Weather

7 Day Weather Forecast

12.18
thu
DAY
76°F
W 9 mph
precip
64%
NIGHT
64°F
NW 3 mph
precip
0%
12.19
fri
DAY
78°F
W 4 mph
precip
76%
NIGHT
68°F
NW 3 mph
precip
87%
12.20
sat
DAY
80°F
W 6 mph
precip
100%
NIGHT
70°F
W 5 mph
precip
100%
12.21
sun
DAY
80°F
W 8 mph
precip
64%
NIGHT
66°F
NW 3 mph
precip
0%
12.22
mon
DAY
76°F
W 9 mph
precip
100%
NIGHT
64°F
NW 4 mph
precip
65%
12.23
tue
DAY
74°F
W 7 mph
precip
71%
NIGHT
66°F
W 4 mph
precip
79%
12.24
wed
DAY
74°F
W 7 mph
precip
0%
NIGHT
64°F
W 4 mph
precip
62%

Hainan Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Hainan was 22.8°F. The maximum and minimum values were 22.3°F and 23.1°F respectively.

Hainan on the Weather Map

Best Time to Visit Hainan
The most sunny months:
June 12 days
May 11 days
April 11 days
The most warm months:
June 94.3 °F
May 93.3 °F
July 93.2 °F
Warmest sea temperature:
July 90.7 °F
June 90.4 °F
August 90.3 °F
The most cold months:
December 71.4 °F
January 72.0 °F
February 77.0 °F
The most rainy months:
September 15 days
August 14 days
July 14 days
The most windy months:
March 4 mph
April 4 mph
October 4 mph
more details