19.05
tue
tue
Day
88°F
N 16 mph
Precip.
0%
0%
Night
81°F
NW 14 mph
Precip.
0%
0%
20.05
wed
wed
Day
88°F
N 15 mph
Precip.
0%
0%
Night
81°F
NW 11 mph
Precip.
0%
0%
21.05
thu
thu
Day
77°F
N 12 mph
Precip.
100%
100%
Night
79°F
NW 11 mph
Precip.
0%
0%
22.05
fri
fri
Day
81°F
N 9 mph
Precip.
100%
100%
Night
81°F
N 11 mph
Precip.
0%
0%
23.05
sat
sat
Day
91°F
N 6 mph
Precip.
0%
0%
Night
81°F
NW 11 mph
Precip.
100%
100%
24.05
sun
sun
Day
91°F
N 8 mph
Precip.
0%
0%
Night
82°F
N 13 mph
Precip.
0%
0%
25.05
mon
mon
Day
93°F
NE 8 mph
Precip.
0%
0%
Night
82°F
N 11 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 80.1°F. The highest and lowest sea temperatures during the month were 83.5°F and 77.5°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 84.2°F. The highest and lowest sea temperatures during the month were 85.6°F and 82.2°F.
Air temperature in Haikou, °F
Precipitation total in Haikou, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Haikou
Haikou on a weather map
Places in China:
Name
°F
24 Hours Forecast
Haikou
Local time: 02:26
May 19, tuesday
0300
81°F
NW
14 mph
14 mph
0600
79°F
NW
14 mph
14 mph
0900
82°F
N
16 mph
16 mph
1200
88°F
N
16 mph
16 mph
1500
88°F
N
16 mph
16 mph
1800
86°F
NW
15 mph
15 mph
2100
81°F
NW
15 mph
15 mph
May 20, wednesday
0000
81°F
NW
14 mph
14 mph
