September weather forecastYanchuan, China
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Yanchuan, China, with an average temperature varying between 14.3°C (57.7°F) and 21.7°C (71.1°F).Temperature
September's arrival correlates with a reduction in the average high-temperature, down from a moderately hot 27.5°C (81.5°F) in August to a pleasant 21.7°C (71.1°F). September's nights observe an average temperature of 14.3°C (57.7°F).Humidity
With an average relative humidity of 54%, September is the most humid month.Rainfall
In Yanchuan, in September, it is raining for 11.3 days, with typically 46mm (1.81") of accumulated precipitation. In Yanchuan, China, during the entire year, the rain falls for 84.7 days and collects up to 296mm (11.65") of precipitation.Snowfall
In Yanchuan, snow does not fall in May through October.Daylight
In Yanchuan, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 06:10 and sunset at 19:07. On the last day of the month, sunrise is at 06:33 and sunset at 18:24 CST.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September in Yanchuan, China, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 in September translates into these instructions:
Exercise prevention - Protecting skin and eyes from harm is required. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yanchuan, China
- Average high temperature in September: 21.7°C
The warmest month (with the highest average high temperature) is July (29.3°C).
The month with the lowest average high temperature is January (-1.8°C).
- Average low temperature in September: 14.3°C
The month with the highest average low temperature is July (21.1°C).
The coldest month (with the lowest average low temperature) is January (-8.4°C).
Average pressure in September
Yanchuan, China
- Average pressure in September: 1014.9mbar
The months with the highest atmospheric pressure are January and December (1029.8mbar).
The month with the lowest atmospheric pressure is July (1004.7mbar).
Average wind speed in September
Yanchuan, China
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is May (16.1km/h).
The calmest month (with the lowest average wind speed) is January (10.8km/h).
Average humidity in September
Yanchuan, China
- Average humidity in September: 54%
The month with the highest relative humidity is September (54%).
The months with the lowest relative humidity are April and May (34%).
Average rainfall in September
Yanchuan, China
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is August (72mm).
The driest month (with the least rainfall) is December (1mm).
Average rainfall days in September
Yanchuan, China
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is January (0.6 days).
Average snowfall in September
Yanchuan, China
- Average snowfall in September: 0mm
The month with the highest snowfall is November (28mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Yanchuan, China
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Yanchuan, China
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days in September
Yanchuan, China
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is December (28.8 days).
The month with the least sunshine days is July (15.2 days).
Average UV index in September
Yanchuan, 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
Yanchuan, China
- Average cloud cover in September: 28
The month with the most cloud cover is September (Cloud cover 28).
The month with the least cloud cover is December (Cloud cover 17).
Average visibility in September
Yanchuan, 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).
