September weather forecastAltlay, Germany
September
Weather in September
September, the first month of the autumn in Altlay, is also an enjoyable month, with an average temperature fluctuating between 8.9°C (48°F) and 18.6°C (65.5°F).Temperature
As September begins, there is a minor decrease in the average high-temperature, softly falling from an agreeable 22.8°C (73°F) in August to a comfortable 18.6°C (65.5°F). An average low-temperature of 8.9°C (48°F) is recorded during the nights in September.Humidity
In Altlay, the average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 4.6 days and typically collects 5mm (0.2") of precipitation.Snowfall
In Altlay, snow does not fall in June through September.Daylight
In Altlay, Germany, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 06:46 and sunset at 20:14. On the last day of September, in Altlay, sunrise is at 07:30 and sunset at 19:11 CEST.
Sunshine
In Altlay, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Altlay is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 3 in September translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Altlay, Germany
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is July (22.9°C).
The month with the lowest average high temperature is January (2.9°C).
- Average low temperature in September: 8.9°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in September
Altlay, Germany
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1014mbar).
Average wind speed in September
Altlay, Germany
- Average wind speed in September: 9km/h
The windiest months (with the highest average wind speed) are February and December (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Altlay, Germany
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (90%).
The months with the lowest relative humidity are April, July and August (75%).
Average rainfall in September
Altlay, Germany
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is August (13mm).
The driest month (with the least rainfall) is September (5mm).
Average rainfall days in September
Altlay, Germany
- Average rainfall days in September: 4.6 days
The month with the highest number of rainy days is May (7.7 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Altlay, Germany
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (12mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Altlay, 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 June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Altlay, 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 18min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Altlay, Germany
- Average sunshine days in September: 23 days
The month with the most sunshine days is March (23.3 days).
The month with the least sunshine days is December (19.5 days).
Average UV index in September
Altlay, Germany
- Average UV index in September: 3
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
Altlay, Germany
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Altlay, Germany
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are January, November and December (7km).
