September weather forecastBielefeld, Germany
September
Weather in September
As September unfolds, Bielefeld gradually transitions from summer to autumn. This month documents a noticeable decrease in temperature from August, dropping to a maximum of 18.8°C (65.8°F). The environment starts to cool, signaling the end of summer festivities. Despite the onset of autumn, daylight hours remain fairly long, permitting abundant outdoor activities under the warm sun. September, thus, offers a blend of late summer and early autumn climates.Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a warm 23.4°C (74.1°F) in August to a refreshing 18.8°C (65.8°F). During the September nights, an average temperature of 10.5°C (50.9°F) is observed in Bielefeld.Humidity
The average relative humidity in September in Bielefeld is 78%.Rainfall
In September, the rain falls for 13.9 days. Throughout September, 32mm (1.26") of precipitation is accumulated. In Bielefeld, during the entire year, the rain falls for 185.3 days and collects up to 536mm (21.1") of precipitation.Snowfall
In Bielefeld, snow does not fall in May through October.Daylight
The average length of the day in September in Bielefeld, Germany, is 12h and 39min.On the first day of September, sunrise is at 06:38 and sunset at 20:12. On the last day of the month, sunrise is at 07:26 and sunset at 19:05 CEST.
Sunshine
In Bielefeld, Germany, the average sunshine in September is 7.8h.UV index
In Bielefeld, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bielefeld, Germany
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is January (3.4°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).
Average pressure in September
Bielefeld, Germany
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).
Average wind speed in September
Bielefeld, Germany
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is December (15.4km/h).
The calmest months (with the lowest average wind speed) are July and August (10.5km/h).
Average humidity in September
Bielefeld, Germany
- Average humidity in September: 78%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Bielefeld, Germany
- Average rainfall in September: 32mm
The wettest months (with the highest rainfall) are July and December (57mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Bielefeld, Germany
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is February (12.1 days).
Average snowfall in September
Bielefeld, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (73mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Bielefeld, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.1 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
Bielefeld, Germany
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Bielefeld, Germany
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is October (14.3 days).
The month with the least sunshine days is December (9 days).
Average UV index in September
Bielefeld, 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
Bielefeld, Germany
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Bielefeld, Germany
- Average visibility in September: 8km
The months with the highest visibility are April, June, July and August (9km).
The months with the lowest visibility are January, February, March, May, September, October, November and December (8km).
