18.12
thu
thu
Day
79°F
W 8 mph
Precip.
0%
0%
Night
68°F
S 4 mph
Precip.
0%
0%
19.12
fri
fri
Day
77°F
W 1 mph
Precip.
0%
0%
Night
70°F
S 5 mph
Precip.
0%
0%
20.12
sat
sat
Day
81°F
NW 4 mph
Precip.
0%
0%
Night
70°F
SW 4 mph
Precip.
86%
86%
21.12
sun
sun
Day
81°F
SW 6 mph
Precip.
0%
0%
Night
70°F
SW 9 mph
Precip.
0%
0%
22.12
mon
mon
Day
77°F
W 13 mph
Precip.
68%
68%
Night
70°F
SW 10 mph
Precip.
52%
52%
23.12
tue
tue
Day
77°F
W 14 mph
Precip.
0%
0%
Night
70°F
SW 11 mph
Precip.
0%
0%
24.12
wed
wed
Day
77°F
W 15 mph
Precip.
0%
0%
Night
70°F
SW 9 mph
Precip.
0%
0%
25.12
thu
thu
Day
77°F
W 10 mph
Precip.
0%
0%
Night
66°F
SW 8 mph
Precip.
0%
0%
26.12
fri
fri
Day
73°F
W 7 mph
Precip.
0%
0%
Night
63°F
SW 9 mph
Precip.
0%
0%
27.12
sat
sat
Day
75°F
W 7 mph
Precip.
0%
0%
Night
68°F
SW 6 mph
Precip.
0%
0%
28.12
sun
sun
Day
75°F
W 7 mph
Precip.
0%
0%
Night
64°F
SW 10 mph
Precip.
0%
0%
29.12
mon
mon
Day
73°F
SW 15 mph
Precip.
0%
0%
Night
64°F
SW 9 mph
Precip.
0%
0%
30.12
tue
tue
Day
73°F
W 11 mph
Precip.
0%
0%
Night
66°F
SW 9 mph
Precip.
0%
0%
31.12
wed
wed
Day
73°F
W 11 mph
Precip.
0%
0%
Night
68°F
SW 9 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 77.5°F. The highest and lowest sea temperatures during the month were 78.4°F and 76.6°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 73.6°F. The highest and lowest sea temperatures during the month were 75.0°F and 72.1°F.
Air temperature in Sanya, °F
Precipitation total in Sanya, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Sanya
Sanya on a weather map
Places in China:
Name
°F
24 Hours Forecast
Sanya
Local time: 06:45
December 18, thursday
0900
72°F
SW
5 mph
5 mph
1200
79°F
W
8 mph
8 mph
1500
79°F
W
5 mph
5 mph
1800
73°F
S
2 mph
2 mph
2100
70°F
S
4 mph
4 mph
December 19, friday
0000
68°F
S
4 mph
4 mph
0300
70°F
S
4 mph
4 mph
0600
72°F
S
2 mph
2 mph
