September weather forecastFlonheim, Germany
September
Weather in September
September, the first month of the autumn in Flonheim, is still a comfortable month, with an average temperature varying between 9.7°C (49.5°F) and 19.3°C (66.7°F).Temperature
September brings a slight decrease in the average high-temperature, shifting from a warm 23.8°C (74.8°F) in August to a refreshing 19.3°C (66.7°F). Flonheim registers a consistent average low-temperature of 9.7°C (49.5°F) during September.Humidity
In Flonheim, the average relative humidity in September is 78%.Rainfall
In Flonheim, in September, during 12.2 rainfall days, 28mm (1.1") of precipitation is typically accumulated. Throughout the year, in Flonheim, there are 176 rainfall days, and 462mm (18.19") of precipitation is accumulated.Snowfall
In Flonheim, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 06:44 and sunset at 20:11. On the last day of September, in Flonheim, sunrise is at 07:27 and sunset at 19:08 CEST.
Sunshine
The average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 4 in September leads to these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Flonheim, Germany
- Average high temperature in September: 19.3°C
The warmest month (with the highest average high temperature) is July (24.4°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in September
Flonheim, Germany
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is November (1014.5mbar).
Average wind speed in September
Flonheim, Germany
- Average wind speed in September: 8.9km/h
The windiest months (with the highest average wind speed) are February and March (12.1km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Flonheim, Germany
- Average humidity in September: 78%
The months with the highest relative humidity are January and December (89%).
The months with the lowest relative humidity are July and August (72%).
Average rainfall in September
Flonheim, Germany
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is July (58mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Flonheim, Germany
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is February (11.9 days).
Average snowfall in September
Flonheim, Germany
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (44mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Flonheim, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.1 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
Flonheim, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Flonheim, Germany
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is December (9.2 days).
Average UV index in September
Flonheim, Germany
- Average UV index in September: 4
The months with the highest UV index are 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
Flonheim, Germany
- Average cloud cover in September: 39
The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Flonheim, Germany
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July and August (9km).
The months with the lowest visibility are January, November and December (7km).
