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
With the onset of September, Alsterdorf's climate undergoes a slight change as the average high-temperature moves from a pleasant 22.6°C (72.7°F) in August to a comfortable 18.4°C (65.1°F). Throughout September, an average nighttime temperature of 10.8°C (51.4°F) is experienced.Humidity
In Alsterdorf, the average relative humidity in September is 81%.Rainfall
In September, the rain falls for 15.5 days. Throughout September, 32mm (1.26") of precipitation is accumulated. Throughout the year, in Alsterdorf, there are 187.4 rainfall days, and 461mm (18.15") of precipitation is accumulated.Snowfall
In Alsterdorf, Germany, snow does not fall in May through October.Daylight
The average length of the day in September in Alsterdorf, Germany, is 12h and 41min.On the first day of the month, sunrise is at 06:29 and sunset at 20:09. On the last day of September, sunrise is at 07:20 and sunset at 18:58 CEST.
Sunshine
In September, the average sunshine is 7.7h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Alsterdorf?
What is the average humidity in September in Alsterdorf?
How much does it rain in Alsterdorf in September?
When it does not snow in Alsterdorf?
What is the average length of the day in September in Alsterdorf?
When are sunrise and sunset in September in Alsterdorf?
How many hours of sunshine does Alsterdorf have in September?
How high is the UV index in September in Alsterdorf?
Average temperature in September
Alsterdorf, Germany
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is August (22.6°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (13.6°C).
The coldest month (with the lowest average low temperature) is February (-0.5°C).
Average pressure in September
Alsterdorf, Germany
- Average pressure in September: 1016.3mbar
The month with the highest atmospheric pressure is September (1016.3mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in September
Alsterdorf, Germany
- Average wind speed in September: 12.2km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is August (11.6km/h).
Average humidity in September
Alsterdorf, Germany
- Average humidity in September: 81%
The month with the highest relative humidity is December (90%).
The months with the lowest relative humidity are April and August (76%).
Average rainfall in September
Alsterdorf, Germany
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Alsterdorf, Germany
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Alsterdorf, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is February (38mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Alsterdorf, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.6 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
Alsterdorf, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Alsterdorf, Germany
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is April (14.1 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in September
Alsterdorf, Germany
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Alsterdorf, Germany
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are April and August (Cloud cover 42).
Average visibility in September
Alsterdorf, Germany
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July and August (9km).
The months with the lowest visibility are January, September, October, November and December (8km).
