September weather forecastKettwig, Germany
September
Weather in September
September, the first month of the autumn in Kettwig, is still a refreshing month, with an average temperature ranging between max 19.4°C (66.9°F) and min 11.6°C (52.9°F).Temperature
A moderate decline in average high-temperatures is noted in September, moving from a moderately hot 23.8°C (74.8°F) in August to a comfortable 19.4°C (66.9°F). In September, Kettwig reports a consistent average low-temperature of 11.6°C (52.9°F) during the nights.Humidity
In Kettwig, Germany, the average relative humidity in September is 76%.Rainfall
In Kettwig, during September, the rain falls for 9.6 days and regularly aggregates up to 15mm (0.59") of precipitation. Throughout the year, there are 156.3 rainfall days, and 267mm (10.51") of precipitation is accumulated.Snowfall
In Kettwig, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 38min.On the first day of September in Kettwig, sunrise is at 06:45 and sunset at 20:18. On the last day of the month, sunrise is at 07:32 and sunset at 19:11 CEST.
Sunshine
In Kettwig, the average sunshine in September is 8.3h.UV index
In Kettwig, 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 ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kettwig, Germany
- Average high temperature in September: 19.4°C
The warmest months (with the highest average high temperature) are July and August (23.8°C).
The month with the lowest average high temperature is January (4.7°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (0.7°C).
Average pressure in September
Kettwig, 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 (1013mbar).
Average wind speed in September
Kettwig, Germany
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is December (15.5km/h).
The calmest month (with the lowest average wind speed) is August (10.5km/h).
Average humidity in September
Kettwig, Germany
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Kettwig, Germany
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is December (32mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Kettwig, Germany
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is September (9.6 days).
Average snowfall in September
Kettwig, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Kettwig, 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
Kettwig, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 18min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in September
Kettwig, Germany
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is December (10 days).
Average UV index in September
Kettwig, 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
Kettwig, Germany
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Kettwig, 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).
