Weather in September
Temperature
September brings a decrease in the average high-temperature, falling from August's warm 26.4°C (79.5°F) to a pleasant 21.3°C (70.3°F). Throughout September, Changchun experiences a low-temperature average of 10.1°C (50.2°F).Humidity
In Changchun, the average relative humidity in September is 69%.Rainfall
In Changchun, in September, during 8.8 rainfall days, 52mm (2.05") of precipitation is typically accumulated. In Changchun, during the entire year, the rain falls for 98.7 days and collects up to 570mm (22.44") of precipitation.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 05:02 and sunset at 18:14. On the last day of September, sunrise is at 05:35 and sunset at 17:21 CST.
Sunshine
In September, the average sunshine is 7.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 5 in September suggests the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
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How long on average sun shines in September?
What is the UV index reading in September?
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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