September weather forecastAtteln, Germany
September
Weather in September
September, the first month of the autumn in Atteln, is also an enjoyable month, with an average temperature varying between 9.6°C (49.3°F) and 18.1°C (64.6°F).Temperature
As August makes way for September, Atteln's average high-temperature eases from a pleasant 22.7°C (72.9°F) to an enjoyable 18.1°C (64.6°F). An average temperature of 9.6°C (49.3°F) is recorded in Atteln during the nights in September.Humidity
The average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 23mm (0.91") of precipitation.Snowfall
In Atteln, snow does not fall in June through September.Daylight
In Atteln, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 06:38 and sunset at 20:11. On the last day of September, sunrise is at 07:24 and sunset at 19:04 CEST.
Sunshine
In Atteln, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Atteln is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Atteln, Germany
- Average high temperature in September: 18.1°C
The warmest month (with the highest average high temperature) is August (22.7°C).
The month with the lowest average high temperature is January (3°C).
- Average low temperature in September: 9.6°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in September
Atteln, Germany
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).
Average wind speed in September
Atteln, Germany
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is December (13.9km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in September
Atteln, Germany
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (90%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Atteln, Germany
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is December (51mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in September
Atteln, Germany
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is September (11.2 days).
Average snowfall in September
Atteln, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (96mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Atteln, 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
Atteln, 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 12min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in September
Atteln, Germany
- Average sunshine days in September: 17 days
The month with the most sunshine days is October (17.1 days).
The month with the least sunshine days is January (9.4 days).
Average UV index in September
Atteln, 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, March, November and December (UV index 2).
Average cloud cover in September
Atteln, Germany
- Average cloud cover in September: 45
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Atteln, Germany
- Average visibility in September: 8km
The month with the highest visibility is August (9km).
The months with the lowest visibility are January, February, October and December (7km).
