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
September
Weather in September
Temperature
The average high-temperature slightly decreases in September, shifting from a moderately hot 23.1°C (73.6°F) in August to a refreshing 19.6°C (67.3°F). The average temperature during September nights is registered at a fresh 11.3°C (52.3°F).Humidity
The average relative humidity in September is 78%.Rainfall
In September, the rain falls for 13.9 days. Throughout September, 36mm (1.42") of precipitation is accumulated. Throughout the year, there are 199.3 rainfall days, and 541mm (21.3") of precipitation is accumulated.Snowfall
In Kelle, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 37min.On the first day of September, sunrise is at 06:57 and sunset at 20:27. On the last day of the month, sunrise is at 07:42 and sunset at 19:22 CEST.
Sunshine
In Kelle, the average sunshine in September is 7.6h.UV index
In Kelle, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Exercise prevention - Precautions against solar damage are endorsed. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Kelle have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September in Kelle?
What is the UV index reading in September?
Average temperature in September
Kelle, Belgium
- Average high temperature in September: 19.6°C
The warmest months (with the highest average high temperature) are July and August (23.1°C).
The month with the lowest average high temperature is January (5.1°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is January (1.1°C).
Average pressure in September
Kelle, Belgium
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.5mbar).
Average wind speed in September
Kelle, Belgium
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is December (18km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in September
Kelle, Belgium
- Average humidity in September: 78%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are April, July and August (75%).
Average rainfall in September
Kelle, Belgium
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is December (60mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Kelle, Belgium
- Average rainfall days in September: 13.9 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 (13.7 days).
Average snowfall in September
Kelle, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is February (47mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Kelle, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 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
Kelle, Belgium
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Kelle, Belgium
- Average sunshine days in September: 12 days
The month with the most sunshine days is March (12.5 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in September
Kelle, Belgium
- 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
Kelle, Belgium
- Average cloud cover in September: 43
The months with the most cloud cover are January and December (Cloud cover 62).
The months with the least cloud cover are April and August (Cloud cover 42).
Average visibility in September
Kelle, Belgium
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
