September weather forecastAltenthann, Germany
September
Weather in September
September, the first month of the autumn in Altenthann, is still a refreshing month, with an average temperature fluctuating between 9.2°C (48.6°F) and 19.3°C (66.7°F).Temperature
September's onset brings a reduction in the average high-temperature, from a warm 24.4°C (75.9°F) in August to a refreshing 19.3°C (66.7°F). In the month of September, the average temperature in Altenthann dips to a frosty 9.2°C (48.6°F) during the night.Humidity
In September, the average relative humidity in Altenthann is 78%.Rainfall
In September, the rain falls for 11.7 days. Throughout September, 30mm (1.18") of precipitation is accumulated. In Altenthann, during the entire year, the rain falls for 154.1 days and collects up to 517mm (20.35") of precipitation.Snowfall
In Altenthann, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 35min.On the first day of the month, sunrise is at 06:27 and sunset at 19:53. On the last day of September, in Altenthann, sunrise is at 07:09 and sunset at 18:51 CEST.
Sunshine
In September, the average sunshine is 8.8h.UV index
In Altenthann, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Altenthann, Germany
- Average high temperature in September: 19.3°C
The warmest month (with the highest average high temperature) is July (24.5°C).
The month with the lowest average high temperature is January (1.8°C).
- Average low temperature in September: 9.2°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 (-3.3°C).
Average pressure in September
Altenthann, Germany
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1019.7mbar).
The months with the lowest atmospheric pressure are April and November (1015.6mbar).
Average wind speed in September
Altenthann, Germany
- Average wind speed in September: 8km/h
The windiest month (with the highest average wind speed) is March (10.8km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).
Average humidity in September
Altenthann, Germany
- Average humidity in September: 78%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Altenthann, Germany
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is June (67mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Altenthann, Germany
- Average rainfall days in September: 11.7 days
The months with the highest number of rainy days are May and July (18.8 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in September
Altenthann, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (120mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Altenthann, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Altenthann, 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 48min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in September
Altenthann, Germany
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is May (10 days).
Average UV index in September
Altenthann, Germany
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Altenthann, Germany
- Average cloud cover in September: 38
The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Altenthann, Germany
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August and September (9km).
The month with the lowest visibility is January (7km).
