September weather forecastViersen, Germany
September
Weather in September
September, the first month of the autumn in Viersen, is still a refreshing month, with an average temperature varying between 11.5°C (52.7°F) and 19.5°C (67.1°F).Temperature
As Viersen enters September, the average high-temperature subtly lowers from the a warm 23.8°C (74.8°F) of August to a comfortable 19.5°C (67.1°F). During September, the average low-temperature is a fresh 11.5°C (52.7°F).Humidity
The average relative humidity in September in Viersen is 76%.Rainfall
In Viersen, during September, the rain falls for 13.6 days and regularly aggregates up to 32mm (1.26") of precipitation. Throughout the year, in Viersen, Germany, there are 191.8 rainfall days, and 535mm (21.06") of precipitation is accumulated.Snowfall
In Viersen, snow does not fall in April through October.Daylight
In Viersen, Germany, the average length of the day in September is 12h and 38min.On the first day of September in Viersen, sunrise is at 06:48 and sunset at 20:20. On the last day of the month, sunrise is at 07:34 and sunset at 19:14 CEST.
Sunshine
In September, the average sunshine is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the UV index of 4 transforms into the following advice:
Make use of precautions - Suggestions to resist sunburn are communicated. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Viersen, Germany
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is August (23.8°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).
Average pressure in September
Viersen, 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 (1012.9mbar).
Average wind speed in September
Viersen, Germany
- Average wind speed in September: 11.1km/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 (11km/h).
Average humidity in September
Viersen, Germany
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are April and August (72%).
Average rainfall in September
Viersen, Germany
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Viersen, Germany
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is September (13.6 days).
Average snowfall in September
Viersen, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (55mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Viersen, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.5 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
Viersen, 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 30min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in September
Viersen, Germany
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is December (8.3 days).
Average UV index in September
Viersen, 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
Viersen, Germany
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Viersen, 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).
