17.09
thu
thu
Day
86°F
W 7 mph
Precip.
16%
16%
Night
77°F
SW 5 mph
Precip.
29%
29%
18.09
fri
fri
Day
88°F
W 5 mph
Precip.
4%
4%
Night
77°F
SW 5 mph
Precip.
24%
24%
19.09
sat
sat
Day
86°F
W 10 mph
Precip.
19%
19%
Night
77°F
SW 6 mph
Precip.
20%
20%
20.09
sun
sun
Day
86°F
NW 5 mph
Precip.
30%
30%
Night
77°F
SW 4 mph
Precip.
16%
16%
21.09
mon
mon
Day
86°F
N 4 mph
Precip.
4%
4%
Night
75°F
SW 4 mph
Precip.
15%
15%
22.09
tue
tue
Day
86°F
NW 4 mph
Precip.
3%
3%
Night
77°F
SW 4 mph
Precip.
25%
25%
23.09
wed
wed
Day
86°F
NW 6 mph
Precip.
10%
10%
Night
77°F
SW 5 mph
Precip.
30%
30%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 81.2°F. The highest and lowest sea temperatures during the month were 82.2°F and 79.2°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 83.6°F. The highest and lowest sea temperatures during the month were 84.6°F and 81.3°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: 14:09
September 17, thursday
1500
86°F
W
9 mph
9 mph
1800
81°F
W
8 mph
8 mph
2100
77°F
SW
6 mph
6 mph
September 18, friday
0000
77°F
SW
5 mph
5 mph
0300
75°F
SW
5 mph
5 mph
0600
75°F
SW
4 mph
4 mph
0900
82°F
SW
4 mph
4 mph
1200
88°F
W
5 mph
5 mph
