Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The average high-temperature decreases in September, shifting from a hot 31.6°C (88.9°F) in August to a moderately hot 25.4°C (77.7°F). During the nights in September, the temperature averages to a mild 15.4°C (59.7°F).Humidity
The most humid month is September, with an average relative humidity of 64%.Rainfall
In Chang'an, in September, during 11 rainfall days, 43mm (1.69") of precipitation is typically accumulated. Throughout the year, there are 82.5 rainfall days, and 254mm (10") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Chang'an, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 06:17 and sunset at 19:10. On the last day of September, sunrise is at 06:38 and sunset at 18:30 CST.
Sunshine
The average sunshine in September in Chang'an, China, is 8.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the most humid month?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September in Chang'an?
How high is the UV index in September?
Average temperature in September
Chang'an, China
- Average high temperature in September: 25.4°C
The warmest month (with the highest average high temperature) is July (33.2°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 15.4°C
The month with the highest average low temperature is July (22.3°C).
The coldest month (with the lowest average low temperature) is January (-3.4°C).
Average pressure in September
Chang'an, China
- Average pressure in September: 1015.1mbar
The month with the highest atmospheric pressure is December (1028.2mbar).
The month with the lowest atmospheric pressure is July (1004.8mbar).
Average wind speed in September
Chang'an, China
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is March (7.7km/h).
The calmest month (with the lowest average wind speed) is September (6.3km/h).
Average humidity in September
Chang'an, China
- Average humidity in September: 64%
The month with the highest relative humidity is September (64%).
The month with the lowest relative humidity is December (39%).
Average rainfall in September
Chang'an, China
- Average rainfall in September: 43mm
The wettest months (with the highest rainfall) are July and August (53mm).
The driest month (with the least rainfall) is December (1mm).
Average rainfall days in September
Chang'an, China
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is December (1 days).
Average snowfall in September
Chang'an, China
- Average snowfall in September: 0mm
The month with the highest snowfall is February (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Chang'an, China
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Chang'an, China
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 54min).
Average sunshine days in September
Chang'an, China
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is December (29.7 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Chang'an, China
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Chang'an, China
- Average cloud cover in September: 33
The month with the most cloud cover is September (Cloud cover 33).
The month with the least cloud cover is December (Cloud cover 15).
Average visibility in September
Chang'an, China
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
