September weather forecastNiederkassel, Germany
September
Weather in September
September, the first month of the autumn in Niederkassel, is still a refreshing month, with an average temperature fluctuating between 10.7°C (51.3°F) and 19.3°C (66.7°F).Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderately hot 23.3°C (73.9°F) in August to an enjoyable 19.3°C (66.7°F). In September, the average low-temperature is a cool 10.7°C (51.3°F).Humidity
In September, the average relative humidity in Niederkassel is 77%.Rainfall
In Niederkassel, Germany, in September, it is raining for 10.9 days, with typically 20mm (0.79") of accumulated precipitation. Throughout the year, there are 166.3 rainfall days, and 358mm (14.09") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 38min.On the first day of the month, sunrise is at 06:46 and sunset at 20:16. On the last day of September, sunrise is at 07:31 and sunset at 19:11 CEST.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Niederkassel, Germany
- Average high temperature in September: 19.3°C
The warmest month (with the highest average high temperature) is July (23.7°C).
The month with the lowest average high temperature is January (4.3°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (0.1°C).
Average pressure in September
Niederkassel, Germany
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is September (1017.7mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed in September
Niederkassel, Germany
- Average wind speed in September: 9.7km/h
The windiest month (with the highest average wind speed) is February (14.1km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).
Average humidity in September
Niederkassel, Germany
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Niederkassel, Germany
- Average rainfall in September: 20mm
The wettest months (with the highest rainfall) are June and August (38mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Niederkassel, Germany
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is September (10.9 days).
Average snowfall in September
Niederkassel, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is February (34mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Niederkassel, Germany
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (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
Niederkassel, Germany
- Average daylight in September: 12h and 36min
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 0min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in September
Niederkassel, Germany
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Niederkassel, 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
Niederkassel, Germany
- Average cloud cover in September: 39
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Niederkassel, Germany
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, November and December (8km).
