Weather in September
Temperature
With September's arrival, Changchun's weather changes as the average high-temperature falls from a warm 26.4°C (79.5°F) in August to a pleasant 21.3°C (70.3°F). The temperature lowers to an average of 10.1°C (50.2°F) during September nights.Humidity
In Changchun, the average relative humidity in September is 69%.Rainfall
In September, the rain falls for 8.8 days. Throughout September, 52mm (2.05") of precipitation is accumulated. In Changchun, during the entire year, the rain falls for 98.7 days and collects up to 570mm (22.44") of precipitation.Daylight
The average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 05:02 and sunset at 18:14. On the last day of the month, sunrise is at 05:35 and sunset at 17:21 CST.
Sunshine
In Changchun, the average sunshine in September is 7.8h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: An average UV index of 5 in September transforms into this advice:
Undertake precautions - Guarding against sun damage is counselled. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What are the temperatures in Changchun in September?
What is the average humidity in September in Changchun?
How many days does it rain in September in Changchun?
How many hours of daylight does Changchun have in September?
What time are sunrise and sunset in September in Changchun?
How long on average sun shines in September in Changchun?
What is the UV index intensity in September in Changchun?
Average temperature in September
Changchun, China
- Average high temperature in September: 21.3°C
The warmest month (with the highest average high temperature) is July (27.6°C).
The month with the lowest average high temperature is January (-9.8°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is July (19°C).
The coldest month (with the lowest average low temperature) is January (-19.9°C).
Average humidity in September
Changchun, China
- Average humidity in September: 69%
The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is April (49%).
Average rainfall in September
Changchun, China
- Average rainfall in September: 51.9mm
The wettest month (with the highest rainfall) is July (161.1mm).
The driest month (with the least rainfall) is January (3.2mm).
Average rainfall days in September
Changchun, China
- Average rainfall days in September: 8.8 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is January (3.7 days).
Average daylight in September /
Average sunshine in September
Changchun, China
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is May (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average UV index in September
Changchun, China
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 8).
The months with the lowest UV index are January, November and December (UV index 1).
Changchun, China
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