Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A mild drop in Cologne's average high-temperature is observed in September, transitioning from a moderately hot 26.3°C (79.3°F) in August to an agreeable 21.5°C (70.7°F). Throughout the month of September, Cologne witnesses an average low-temperature of 12.2°C (54°F).Humidity
In Cologne, the average relative humidity in September is 76%.Rainfall
In Cologne, in September, it is raining for 16.1 days, with typically 76mm (2.99") of accumulated precipitation. Throughout the year, there are 190.3 rainfall days, and 984mm (38.74") of precipitation is accumulated.Snowfall
In Cologne, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:42 and sunset at 19:58. On the last day of September, sunrise is at 07:17 and sunset at 19:02 CEST.
Sunshine
The average sunshine in September is 9.8h.UV index
In Cologne, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the average September temperature in Cologne?
What is the average humidity in September in Cologne?
How many days does it rain in September in Cologne?
When it does not snow in Cologne?
What is the average length of the day in September in Cologne?
When is the sunrise / sunset in September in Cologne?
How many hours of sunshine does Cologne have in September?
How high is the UV index in September in Cologne?
Average temperature in September
Cologne, Italy
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (5.1°C).
- Average low temperature in September: 12.2°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is January (-0.6°C).
Average pressure in September
Cologne, Italy
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is May (1014.7mbar).
Average wind speed in September
Cologne, Italy
- Average wind speed in September: 5.6km/h
The windiest months (with the highest average wind speed) are March and April (6.6km/h).
The calmest month (with the lowest average wind speed) is November (5.4km/h).
Average humidity in September
Cologne, Italy
- Average humidity in September: 76%
The month with the highest relative humidity is November (81%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in September
Cologne, Italy
- Average rainfall in September: 76mm
The wettest month (with the highest rainfall) is August (135mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days in September
Cologne, Italy
- Average rainfall days in September: 16.1 days
The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Cologne, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is December (28mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Cologne, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Cologne, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 9h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is November (Average sunshine: 5h and 24min).
Average sunshine days in September
Cologne, Italy
- Average sunshine days in September: 9.7 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (2.9 days).
Average UV index in September
Cologne, Italy
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Cologne, Italy
- Average cloud cover in September: 27
The month with the most cloud cover is November (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in September
Cologne, Italy
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
Cologne, Italy
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