Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Herne's transition into September involves a gentle shift in temperature, receding from a moderately hot 23.3°C (73.9°F) in August to a refreshing 19.1°C (66.4°F). In September, Herne encounters an average low-temperature of 11.3°C (52.3°F) during the night.Humidity
The average relative humidity in September is 76%.Rainfall
In Herne, Germany, in September, it is raining for 12.5 days, with typically 28mm (1.1") of accumulated precipitation. In Herne, during the entire year, the rain falls for 171.9 days and collects up to 479mm (18.86") of precipitation.Snowfall
In Herne, snow does not fall in May through October.Daylight
The average length of the day in September in Herne is 12h and 38min.On the first day of September, sunrise is at 06:44 and sunset at 20:17. On the last day of the month, sunrise is at 07:31 and sunset at 19:10 CEST.
Sunshine
In Herne, the average sunshine in September is 8h.UV index
In Herne, Germany, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Undertake precautions - Guarding against sun damage is counselled. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the temperature in September in Herne?
What is the average humidity in September in Herne?
How many days does it rain in September in Herne?
When it does not snow in Herne?
What is the average length of the day in September in Herne?
When is the sunrise / sunset in September in Herne?
How long on average sun shines in September in Herne?
What is the UV index reading in September in Herne?
Average temperature in September
Herne, Germany
- Average high temperature in September: 19.1°C
The warmest months (with the highest average high temperature) are July and August (23.3°C).
The month with the lowest average high temperature is January (4.1°C).
- Average low temperature in September: 11.3°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 (0.4°C).
Average pressure in September
Herne, Germany
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).
Average wind speed in September
Herne, Germany
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is December (16.5km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in September
Herne, Germany
- Average humidity in September: 76%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Herne, Germany
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is December (60mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Herne, Germany
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is April (12.1 days).
Average snowfall in September
Herne, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (46mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Herne, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.8 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
Herne, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Herne, Germany
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is April (15.7 days).
The month with the least sunshine days is December (10.5 days).
Average UV index in September
Herne, 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
Herne, Germany
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Herne, Germany
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and December (8km).
Herne, Germany
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