September weather forecastBöllenborn, Germany
September
Weather in September
September, the first month of the autumn in Böllenborn, is also an agreeable month, with an average temperature ranging between min 10.4°C (50.7°F) and max 20.6°C (69.1°F).Temperature
Böllenborn observes a small decrease in the average high-temperature with the arrival of September, falling from August's moderately hot 25.3°C (77.5°F) to an agreeable 20.6°C (69.1°F). In September, Böllenborn reports a consistent average low-temperature of 10.4°C (50.7°F) during the nights.Humidity
In Böllenborn, the average relative humidity in September is 76%.Rainfall
In Böllenborn, during September, the rain falls for 9.9 days and regularly aggregates up to 25mm (0.98") of precipitation. Throughout the year, there are 142.1 rainfall days, and 376mm (14.8") of precipitation is accumulated.Snowfall
In Böllenborn, snow does not fall in April through September.Daylight
In September, the average length of the day is 12h and 35min.On the first day of September, sunrise is at 06:45 and sunset at 20:10. On the last day of the month, sunrise is at 07:27 and sunset at 19:08 CEST.
Sunshine
In Böllenborn, Germany, the average sunshine in September is 8.5h.UV index
In Böllenborn, Germany, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Ensure safety - Sun damage prevention is strongly urged. To protect against the Sun's most potent rays, avoid direct exposure around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Böllenborn, Germany
- Average high temperature in September: 20.6°C
The warmest months (with the highest average high temperature) are July and August (25.3°C).
The month with the lowest average high temperature is January (4.1°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (-0.6°C).
Average pressure in September
Böllenborn, Germany
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1019.4mbar).
The month with the lowest atmospheric pressure is November (1015.1mbar).
Average wind speed in September
Böllenborn, Germany
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).
Average humidity in September
Böllenborn, Germany
- Average humidity in September: 76%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in September
Böllenborn, Germany
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is May (47mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Böllenborn, Germany
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (15.1 days).
The months with the least rainy days are February and September (9.9 days).
Average snowfall in September
Böllenborn, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is December (50mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Böllenborn, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.3 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
Böllenborn, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 8h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Böllenborn, Germany
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is December (13.5 days).
Average UV index in September
Böllenborn, Germany
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Böllenborn, Germany
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Böllenborn, Germany
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and December (8km).
