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
Weather in September
Temperature
The arrival of September in Hefei signals a subtle shift in temperature, down from a tropical 31.8°C (89.2°F) in August to a moderately hot 27°C (80.6°F). The nighttime temperature in Hefei, China, dips to an enjoyable 19.7°C (67.5°F) on average during September.Heat index
The heat index for September is appraised at 29°C (84.2°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
In Hefei, the average relative humidity in September is 76%.Rainfall
In Hefei, in September, during 14.3 rainfall days, 44mm (1.73") of precipitation is typically accumulated. Throughout the year, in Hefei, there are 144.1 rainfall days, and 679mm (26.73") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Hefei is 12h and 22min.On the first day of the month, sunrise is at 05:46 and sunset at 18:35. On the last day of September, sunrise is at 06:04 and sunset at 17:57 CST.
Sunshine
In Hefei, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Hefei?
What is the average humidity in September in Hefei?
How much does it rain in Hefei in September?
When it does not snow in Hefei?
How many hours of daylight does Hefei have in September?
What time are sunrise and sunset in September in Hefei?
How many hours of sunshine does Hefei have in September?
What is the UV index reading in September in Hefei?
Average temperature in September
Hefei, China
- Average high temperature in September: 27°C
The warmest months (with the highest average high temperature) are July and August (31.8°C).
The month with the lowest average high temperature is January (7.5°C).
- Average low temperature in September: 19.7°C
The months with the highest average low temperature are July and August (24.3°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in September
Hefei, China
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is January (1027.7mbar).
The month with the lowest atmospheric pressure is July (1004mbar).
Average wind speed in September
Hefei, China
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is March (12km/h).
The calmest month (with the lowest average wind speed) is September (9.6km/h).
Average humidity in September
Hefei, China
- Average humidity in September: 76%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is December (61%).
Average rainfall in September
Hefei, China
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is July (142mm).
The driest month (with the least rainfall) is December (20mm).
Average rainfall days in September
Hefei, China
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is August (20.3 days).
The month with the least rainy days is December (6.8 days).
Average snowfall in September
Hefei, China
- Average snowfall in September: 0mm
The month with the highest snowfall is February (52mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Hefei, China
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 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
Hefei, China
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Hefei, China
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is December (23.1 days).
The months with the least sunshine days are July and August (9.2 days).
Average UV index in September
Hefei, China
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Hefei, China
- Average cloud cover in September: 45
The months with the most cloud cover are February and September (Cloud cover 45).
The month with the least cloud cover is December (Cloud cover 33).
Average visibility in September
Hefei, China
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, October, November and December (10km).
The months with the lowest visibility are January, February, July, August and September (9km).
Hefei, China
Weather forecast for your location
2. Allow the app to use your location