September weather forecastUnna, Germany
September
Weather in September
September, the first month of the autumn in Unna, is still a refreshing month, with temperature in the range of an average low of 11°C (51.8°F) and an average high of 19°C (66.2°F).Temperature
September's onset brings a negligible change in high-temperatures, falling from a moderately hot 23.5°C (74.3°F) in August to an enjoyable 19°C (66.2°F). In Unna, the expected average low-temperature for September is a fresh 11°C (51.8°F).Humidity
In Unna, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 8.1 days and accumulates 8mm (0.31") of precipitation.Snowfall
In Unna, Germany, snow does not fall in April through October.Daylight
The average length of the day in September in Unna is 12h and 38min.On the first day of September, sunrise is at 06:42 and sunset at 20:15. On the last day of the month, sunrise is at 07:29 and sunset at 19:08 CEST.
Sunshine
In September, the average sunshine in Unna is 8.2h.UV index
In Unna, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Unna, Germany
- Average high temperature in September: 19°C
The warmest month (with the highest average high temperature) is August (23.5°C).
The month with the lowest average high temperature is January (4°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is January (0.1°C).
Average pressure in September
Unna, Germany
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in September
Unna, Germany
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is December (16.4km/h).
The calmest month (with the lowest average wind speed) is August (10.7km/h).
Average humidity in September
Unna, Germany
- Average humidity in September: 77%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Unna, Germany
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is December (15mm).
The driest month (with the least rainfall) is September (8mm).
Average rainfall days in September
Unna, Germany
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is July (11.1 days).
The month with the least rainy days is February (7.4 days).
Average snowfall in September
Unna, Germany
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Unna, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.8 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
Unna, 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 36min).
The months with the least sunshine are January and December (Average sunshine: 3h and 36min).
Average sunshine days in September
Unna, Germany
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is December (15 days).
Average UV index in September
Unna, 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
Unna, Germany
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Unna, 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).
