September weather forecastHeroldsberg, Germany
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Heroldsberg, Germany, with temperature in the range of an average high of 19.5°C (67.1°F) and an average low of 9.9°C (49.8°F).Temperature
September brings a drop in Heroldsberg's average high-temperature, falling from a warm 24.6°C (76.3°F) in August to an enjoyable 19.5°C (67.1°F). In Heroldsberg, the average low-temperature during the month of September is a chilly 9.9°C (49.8°F).Humidity
In Heroldsberg, the average relative humidity in September is 76%.Rainfall
In Heroldsberg, in September, it is raining for 10.5 days, with typically 23mm (0.91") of accumulated precipitation. In Heroldsberg, during the entire year, the rain falls for 142.6 days and collects up to 350mm (13.78") of precipitation.Snowfall
June through September are months without snowfall in Heroldsberg.Daylight
In Heroldsberg, the average length of the day in September is 12h and 36min.On the first day of the month, sunrise is at 06:31 and sunset at 19:58. On the last day of September, in Heroldsberg, sunrise is at 07:14 and sunset at 18:55 CEST.
Sunshine
In September, the average sunshine in Heroldsberg is 8.7h.UV index
In September, the average daily maximum UV index in Heroldsberg is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Heroldsberg, Germany
- Average high temperature in September: 19.5°C
The warmest months (with the highest average high temperature) are July and August (24.6°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 9.9°C
The months with the highest average low temperature are July and August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in September
Heroldsberg, Germany
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is November (1015.3mbar).
Average wind speed in September
Heroldsberg, Germany
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is December (12.4km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in September
Heroldsberg, Germany
- Average humidity in September: 76%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in September
Heroldsberg, Germany
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is August (39mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Heroldsberg, Germany
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in September
Heroldsberg, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (73mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Heroldsberg, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Heroldsberg, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Heroldsberg, Germany
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is September (17.6 days).
The month with the least sunshine days is December (12.5 days).
Average UV index in September
Heroldsberg, Germany
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Heroldsberg, Germany
- Average cloud cover in September: 38
The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Heroldsberg, Germany
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August and September (9km).
The month with the lowest visibility is January (7km).
