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
A subtle decrease in the average high-temperature marks September, falling from August's hot 31.1°C (88°F) to a moderately hot 25.8°C (78.4°F). The average temperature during September nights dips to a moderate 14.6°C (58.3°F).Humidity
In September, the average relative humidity is 57%.Rainfall
In September, the rain falls for 6.9 days. Throughout September, 30mm (1.18") of precipitation is accumulated. In Haidian, during the entire year, the rain falls for 72.9 days and collects up to 245mm (9.65") of precipitation.Snowfall
In Haidian, snow does not fall in April through October.Daylight
In Haidian, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 05:42 and sunset at 18:46. On the last day of the month, sunrise is at 06:10 and sunset at 17:59 CST.
Sunshine
In Haidian, the average sunshine in September is 10.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Haidian have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Haidian have in September?
What is the UV index reading in September?
Average temperature in September
Haidian, China
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is July (32.6°C).
The month with the lowest average high temperature is January (0.5°C).
- Average low temperature in September: 14.6°C
The month with the highest average low temperature is July (21.8°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).
Average pressure in September
Haidian, China
- Average pressure in September: 1015.1mbar
The month with the highest atmospheric pressure is January (1030mbar).
The month with the lowest atmospheric pressure is July (1004.8mbar).
Average wind speed in September
Haidian, China
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is April (10.7km/h).
The calmest month (with the lowest average wind speed) is August (7km/h).
Average humidity in September
Haidian, China
- Average humidity in September: 57%
The month with the highest relative humidity is August (64%).
The month with the lowest relative humidity is March (32%).
Average rainfall in September
Haidian, China
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is July (64mm).
The driest months (with the least rainfall) are January and December (1mm).
Average rainfall days in September
Haidian, China
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is January (0.7 days).
Average snowfall in September
Haidian, China
- Average snowfall in September: 0mm
The month with the highest snowfall is February (31mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Haidian, China
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Haidian, China
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is April (Average sunshine: 11h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).
Average sunshine days in September
Haidian, China
- Average sunshine days in September: 21.1 days
The month with the most sunshine days is January (29.8 days).
The month with the least sunshine days is July (15 days).
Average UV index in September
Haidian, 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, February, November and December (UV index 2).
Average cloud cover in September
Haidian, China
- Average cloud cover in September: 22
The month with the most cloud cover is July (Cloud cover 29).
The months with the least cloud cover are January and December (Cloud cover 18).
Average visibility in September
Haidian, China
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (10km).
The month with the lowest visibility is August (9km).
