September weather forecastHanover, Germany
September
Weather in September
September marks the beginning of the transition period from summer to autumn in Hanover. The typical summer high temperatures start to drop, descending to an average high of 19.1°C (66.4°F). While the warmth of the sun can still be felt, the sudden drop in temperature in the evenings remind of the imminent arrival of fall. The city starts to transition in color, presenting a captivating blend of green summers with hints of autumn yellows and oranges. The cross-over month of September has its own unique charm with a harmony of warmth and coolness in the air.Temperature
The average high-temperature shows a slight dip in September, from August's moderately hot 23.8°C (74.8°F) to a comfortable 19.1°C (66.4°F). An average temperature of 10.8°C (51.4°F) marks the nights in Hanover in September.Humidity
The average relative humidity in September in Hanover is 76%.Rainfall
In September, the rain falls for 13.8 days. Throughout September, 32mm (1.26") of precipitation is accumulated. In Hanover, during the entire year, the rain falls for 187.8 days and collects up to 489mm (19.25") of precipitation.Snowfall
In Hanover, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 40min.On the first day of the month, sunrise is at 06:33 and sunset at 20:08. On the last day of September, in Hanover, sunrise is at 07:21 and sunset at 19:00 CEST.
Sunshine
In September, the average sunshine in Hanover, Germany, is 8.3h.UV index
In Hanover, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take precautions - Protection against sun damage is advised. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hanover, Germany
- Average high temperature in September: 19.1°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 (3°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (-0.9°C).
Average pressure in September
Hanover, Germany
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in September
Hanover, Germany
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is December (16.2km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).
Average humidity in September
Hanover, Germany
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Hanover, Germany
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (53mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Hanover, Germany
- Average rainfall days in September: 13.8 days
The months with the highest number of rainy days are May and July (18.3 days).
The month with the least rainy days is February (13.4 days).
Average snowfall in September
Hanover, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (59mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Hanover, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.9 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
Hanover, Germany
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Hanover, Germany
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is October (14.1 days).
The month with the least sunshine days is December (7.5 days).
Average UV index in September
Hanover, 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
Hanover, Germany
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Hanover, Germany
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, November and December (8km).
