September weather forecastHamburg, Germany
September
Weather in September
As September arrives, the weather commences a transition from sultry summers to pleasant autumns. The average maximum temperature drops to 18.4°C (65.1°F), marking the first signs of the coming fall. Concurrently, the city sees a reduction in rainfall to 32mm (1.26"). Despite shorter daylight hours, the sun manages to shine for about 7.7 hours per day. The colorful, changing leaves, along with the cooling temperature, signal the onset of the beautiful autumn season.Temperature
With September's onset, the weather in Hamburg reveals a slight temperature decrease, transitioning from an agreeable 22.6°C (72.7°F) in August to a comfortable 18.4°C (65.1°F). In Hamburg, the average low-temperature during the month of September is a cool 10.8°C (51.4°F).Humidity
In Hamburg, Germany, the average relative humidity in September is 81%.Rainfall
In Hamburg, during September, the rain falls for 15.5 days and regularly aggregates up to 32mm (1.26") of precipitation. Throughout the year, there are 187.4 rainfall days, and 461mm (18.15") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Hamburg, Germany.Daylight
The average length of the day in September in Hamburg is 12h and 41min.On the first day of the month, sunrise is at 06:30 and sunset at 20:09. On the last day of September, sunrise is at 07:20 and sunset at 18:58 CEST.
Sunshine
The average sunshine in September in Hamburg is 7.7h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hamburg, Germany
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is August (22.6°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (13.6°C).
The coldest month (with the lowest average low temperature) is February (-0.5°C).
Average pressure in September
Hamburg, Germany
- Average pressure in September: 1016.3mbar
The month with the highest atmospheric pressure is September (1016.3mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in September
Hamburg, Germany
- Average wind speed in September: 12.2km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is August (11.6km/h).
Average humidity in September
Hamburg, Germany
- Average humidity in September: 81%
The month with the highest relative humidity is December (90%).
The months with the lowest relative humidity are April and August (76%).
Average rainfall in September
Hamburg, Germany
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Hamburg, Germany
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Hamburg, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is February (38mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Hamburg, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.6 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
Hamburg, Germany
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Hamburg, Germany
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is April (14.1 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in September
Hamburg, Germany
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Hamburg, Germany
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are April and August (Cloud cover 42).
Average visibility in September
Hamburg, Germany
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July and August (9km).
The months with the lowest visibility are January, September, October, November and December (8km).
