Haikou Weather: September
 |
Average Day Temperature: | 92.1°F |
|
Average Night Temperature: | 83.0°F |
|
Sea Water Temperature: | 88.1°F |
|
Number of Sunny Days: | 11 days |
| Sunshine Hours: | 12.0 - 12.5 hours | |
|
Number of Rainy Days: | 8 days |
| Precipitation Totals: | 5.1 in | |
| detailed information | ||
forecast
| Haikou |
Temperature
| Haikou |
Air Temperature in September, °F
The highest day temperature in September 2025 was 93°F. The lowest night temperature was 80°F. The average values for day and night temperatures during September were 89.4°F и 82.1°F respectivly.
Haikou Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Haikou was 88.1°F. The maximum and minimum values were 86.2°F and 89.0°F respectively.
You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Haikou is 5.1 in. It makes september one of the most rainy months of the year.
The average wind speed in September is 8.8 mph. It makes September one of the most windless months of the year for Haikou.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Haikou in September is 7.3 hours.
Haikou on the Weather Map
| Beidaihe |  |
+40 |
| Beijing |  |
+40 |
| Dadunhai |  |
+80 |
| Dalian |  |
+42 |
| Guangzhou | |
+78 |
| Haikou | |
+74 |
| Hainan | |
+72 |
| Hong Kong | |
+70 |
| Macau | |
+72 |
| Quingdao | |
+44 |
| Sanya | |
+80 |
| Shanghai | |
+58 |
| Shenzhen | |
+74 |
| Weihai | |
+42 |
| Yalong Bay | |
+80 |
| 1800 |  |
72°F | SW 13 mph |
| 2100 | |
72°F | W 12 mph |
| 0000 | |
72°F | W 11 mph |
| 0300 |  |
72°F | W 9 mph |
| 0600 | |
72°F | W 12 mph |
| 0900 |  |
74°F | W 14 mph |
| 1200 | |
78°F | W 14 mph |
| 1500 |  |
76°F | W 12 mph |