Hainan in september: average Weather, Temperature and Climate
Weather in Hainan in september 2025
The weather in Hainan in september comes from statistical datas on the last years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather UV index: 7
Weather at 6am
79°F
Clear/Sunny
39% of time
34%
9%
8%
Weather at 12pm
88°F
Partly Cloudy
32% of time
20%
18%
16%
Weather at 6pm
79°F
Moderate rain at times
23% of time
23%
20%
17%
Weather at 3am
76°F
47%
19%
18%
13%
Evolution of daily average temperature and precipitation in Hainan in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Hainan in september.
The climate of Hainan in september is good
The climate in september in Hainan is wet (with 9.8in of precipitation over 12 days). It should be noted an improvement from the previous month since in august it receives an average of 13.2in of rainfall over 15 days.
The climate quite good around this city this month. Temperatures are up to 90°F. The seasonal minimum is 79°F. Thus, the mean temperature average in september in Hainan is 85°F. Note that seasonal normals in contrast with those observed in Hainan in september with a maximum record of 99°F in 2009 and a minimum record of 72°F in 2011. You You can hope to have about 24 days with temperatures up to 86°F, or 80 of time.
Day length in Hainan in september is 12:16. Sunrise is at 06:27 and sets at 18:43.
With proper weather, the month of september is okay (but not good) to go in that area.
Seasonal average climate and temperature of Hainan in september
Check below seasonal norms These statistics are compiled from the weather statements of the past years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 90°F | ||||
| Lowest temperature | 79°F | ||||
| Highest record temperature | 99°F (2009) | ||||
| Lowest record temperature | 72°F (2011) | ||||
| Number of days at +86°F | 24 day(s) (80%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 84°F | ||||
| Lowest sea temperature | 81°F | ||||
| Highest sea temperature | 87°F | ||||
| Wind | |||||
| Wind speed | 10km/h | ||||
| Wind temperature | 79°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 9.8in | ||||
| Number of days with rainfall | 12 day(s) (40%) | ||||
| Record daily rainfall | 8.3in (2011) | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 7.55km | ||||
| Cloud cover | 45% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:27 | ||||
| Time of sunset | 18:43 | ||||
| Length of day | 12:16 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Hainan in september 2024:
77°F to 92°F
77°F to 92°F
77°F to 92°F
76°F to 95°F
79°F to 92°F
77°F to 81°F
77°F to 88°F
79°F to 92°F
79°F to 90°F
76°F to 79°F
76°F to 83°F
76°F to 86°F
76°F to 86°F
74°F to 86°F
76°F to 88°F
76°F to 88°F
76°F to 88°F
76°F to 86°F
77°F to 83°F
77°F to 88°F
77°F to 86°F
77°F to 85°F
76°F to 79°F
77°F to 81°F
74°F to 86°F
74°F to 88°F
74°F to 90°F
76°F to 90°F
77°F to 88°F
76°F to 90°F
Map: other cities in China in september
Cities near Hainan:
| Hainan island (Haikou) in september | tolerable weather |
| Sanya in september | tolerable weather |
| Beihai in september | tolerable weather |
| Hailing island in september | tolerable weather |
| Nanning in september | good weather |
| Hebao Island in september | tolerable weather |
| Macao in september | tolerable weather |
| Wanshan islands in september | tolerable weather |
| Guangzhou (Canton) in september | tolerable weather |
| Hong Kong in september | tolerable weather |
| Shenzhen in september | good weather |
| Yangshuo in september | good weather |
Click over cities on the map for information about the weather in september.
Hainan
perfect weather
good
tolerable
bad
very bad
Weather data for Hainan in september:
Weather data for Hainan for september are derived from an average of the weather forecast since 2009 in Hainan. There is a margin of error and these forecasts are to be considered as general information only. The weather in Hainan can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Hainan.