September weather forecastBremen, Germany
September
Weather in September
September brings the hint of autumn to Bremen, trailed by a decrease in temperatures and shorter daylight hours, now reduced to about 12.7 hours. The city basks in moderate weather conditions, with the temperature fluctuating around 18.7°C (65.7°F) during most of the days. Winds maneuver their course around at an average speed of 12.9km/h (8mph), slightly higher than the summer months. The fall of rainfall is restricted to 21mm (0.83"), the least recorded post the summer months. A surge in greenery coupled with cool weather makes September an enchanting month.Temperature
September in Bremen implies a soft temperature shift, with average high-temperatures reducing from August's agreeable 22.8°C (73°F) to an enjoyable 18.7°C (65.7°F). Nighttime temperatures in Bremen consistently average a cool 10.7°C (51.3°F) during September.Humidity
In Bremen, the average relative humidity in September is 81%.Rainfall
In Bremen, during September, the rain falls for 13.8 days and regularly aggregates up to 21mm (0.83") of precipitation. In Bremen, Germany, during the entire year, the rain falls for 165.9 days and collects up to 342mm (13.46") of precipitation.Snowfall
In Bremen, 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 06:35 and sunset at 20:13. On the last day of September, sunrise is at 07:25 and sunset at 19:03 CEST.
Sunshine
In September, the average sunshine in Bremen is 7.7h.UV index
In Bremen, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bremen, Germany
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is August (22.8°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is August (13.6°C).
The coldest month (with the lowest average low temperature) is January (-0.4°C).
Average pressure in September
Bremen, Germany
- Average pressure in September: 1016.7mbar
The month with the highest atmospheric pressure is September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1012mbar).
Average wind speed in September
Bremen, Germany
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is December (18.3km/h).
The calmest month (with the lowest average wind speed) is August (12.4km/h).
Average humidity in September
Bremen, Germany
- Average humidity in September: 81%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Bremen, Germany
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is June (43mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Bremen, Germany
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in September
Bremen, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (22mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Bremen, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.3 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
Bremen, Germany
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Bremen, Germany
- Average sunshine days in September: 12 days
The month with the most sunshine days is April (15 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in September
Bremen, 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
Bremen, Germany
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Bremen, Germany
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
