September weather forecastHeddernheim, Germany
September
Weather in September
September, the first month of the autumn in Heddernheim, is still a pleasant month, with temperature in the range of an average high of 20.1°C (68.2°F) and an average low of 10.8°C (51.4°F).Temperature
In Heddernheim, the average high-temperature in September slightly decreases from a moderately hot 24.7°C (76.5°F) in August to a pleasant 20.1°C (68.2°F). In Heddernheim, the average temperature during the nights of September drops to a cool 10.8°C (51.4°F).Humidity
In September, the average relative humidity in Heddernheim is 74%.Rainfall
September is the month with the least rainfall. Rain falls for 10.7 days and accumulates 25mm (0.98") of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Heddernheim, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 06:41 and sunset at 20:09. On the last day of September, in Heddernheim, sunrise is at 07:24 and sunset at 19:05 CEST.
Sunshine
In September, the average sunshine is 8.7h.UV index
In Heddernheim, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Heddernheim, Germany
- Average high temperature in September: 20.1°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is January (-1°C).
Average pressure in September
Heddernheim, Germany
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is December (1018.1mbar).
The month with the lowest atmospheric pressure is November (1014.5mbar).
Average wind speed in September
Heddernheim, Germany
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is February (12.5km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Heddernheim, Germany
- Average humidity in September: 74%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in September
Heddernheim, Germany
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is May (50mm).
The driest month (with the least rainfall) is September (25mm).
Average rainfall days in September
Heddernheim, Germany
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is September (10.7 days).
Average snowfall in September
Heddernheim, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is February (56mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Heddernheim, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Heddernheim, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in September
Heddernheim, Germany
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is December (10.6 days).
Average UV index in September
Heddernheim, 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
Heddernheim, Germany
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Heddernheim, Germany
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, February, October, November and December (8km).
