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
September brings a slight decrease in temperature, down from a moderately hot 23.4°C (74.1°F) in August to an enjoyable 18.8°C (65.8°F). Nighttime temperatures consistently average a chilly 9.1°C (48.4°F) during September.Humidity
In September, the average relative humidity is 79%.Rainfall
In Leun, in September, during 11.5 rainfall days, 30mm (1.18") of precipitation is typically accumulated. Throughout the year, there are 168.8 rainfall days, and 473mm (18.62") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 37min.On the first day of September, sunrise is at 06:41 and sunset at 20:11. On the last day of the month, sunrise is at 07:26 and sunset at 19:06 CEST.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September in Leun?
How many hours of sunshine does Leun have in September?
What is the UV index reading in September?
Average temperature in September
Leun, Germany
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is July (23.8°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in September: 9.1°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-1.5°C).
Average pressure in September
Leun, Germany
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1014.2mbar).
Average wind speed in September
Leun, Germany
- Average wind speed in September: 8.9km/h
The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.5km/h).
Average humidity in September
Leun, Germany
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (90%).
The months with the lowest relative humidity are April, July and August (74%).
Average rainfall in September
Leun, Germany
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is August (52mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Leun, Germany
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (17.3 days).
The months with the least rainy days are February and September (11.5 days).
Average snowfall in September
Leun, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is December (66mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Leun, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Leun, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Leun, Germany
- Average sunshine days in September: 15 days
The month with the most sunshine days is October (16 days).
The month with the least sunshine days is December (9.5 days).
Average UV index in September
Leun, Germany
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Leun, Germany
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in September
Leun, Germany
- Average visibility in September: 8km
The months with the highest visibility are March, April, June, July and August (9km).
The months with the lowest visibility are January, October, November and December (7km).
