September weather forecastAlpen, Germany
September
Weather in September
September, the first month of the autumn in Alpen, is still a comfortable month, with an average temperature fluctuating between 19.1°C (66.4°F) and 11.6°C (52.9°F).Temperature
The average high-temperature slightly decreases in September, shifting from a moderately hot 23.1°C (73.6°F) in August to a refreshing 19.1°C (66.4°F). Nighttime temperatures in September average to a fresh 11.6°C (52.9°F) in Alpen.Humidity
The average relative humidity in September in Alpen is 78%.Rainfall
In Alpen, Germany, during September, the rain falls for 14.4 days and regularly aggregates up to 34mm (1.34") of precipitation. Throughout the year, in Alpen, there are 190 rainfall days, and 534mm (21.02") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Alpen.Daylight
In September, the average length of the day in Alpen is 12h and 38min.On the first day of the month, sunrise is at 06:47 and sunset at 20:20. On the last day of September, sunrise is at 07:33 and sunset at 19:13 CEST.
Sunshine
In September, the average sunshine in Alpen is 8h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Alpen, Germany
- Average high temperature in September: 19.1°C
The warmest months (with the highest average high temperature) are July and August (23.1°C).
The month with the lowest average high temperature is January (4.5°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).
Average pressure in September
Alpen, 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 (1012.6mbar).
Average wind speed in September
Alpen, Germany
- Average wind speed in September: 11.5km/h
The windiest month (with the highest average wind speed) is December (17.2km/h).
The calmest months (with the lowest average wind speed) are July and August (11.3km/h).
Average humidity in September
Alpen, Germany
- Average humidity in September: 78%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in September
Alpen, Germany
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is December (57mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Alpen, Germany
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is April (13.1 days).
Average snowfall in September
Alpen, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (35mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Alpen, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.2 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
Alpen, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Alpen, Germany
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is April (14.5 days).
The months with the least sunshine days are February and December (9.8 days).
Average UV index in September
Alpen, 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
Alpen, Germany
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Alpen, Germany
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (9km).
The month with the lowest visibility is December (8km).
