September weather forecastRiem, Germany
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Riem, Germany, with temperature in the range of an average high of 18.7°C (65.7°F) and an average low of 9.1°C (48.4°F).Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to a refreshing 18.7°C (65.7°F) from a warm 23.5°C (74.3°F). Riem experiences a mean temperature of 9.1°C (48.4°F) during September nights.Humidity
In Riem, the average relative humidity in September is 81%.Rainfall
In September, the rain falls for 14 days. Throughout September, 41mm (1.61") of precipitation is accumulated. Throughout the year, there are 173.5 rainfall days, and 625mm (24.61") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 35min.On the first day of the month, sunrise is at 06:31 and sunset at 19:54. On the last day of September, sunrise is at 07:11 and sunset at 18:54 CEST.
Sunshine
In Riem, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Riem, Germany
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is August (23.5°C).
The month with the lowest average high temperature is January (2.3°C).
- Average low temperature in September: 9.1°C
The month with the highest average low temperature is August (13.1°C).
The coldest month (with the lowest average low temperature) is January (-3°C).
Average pressure in September
Riem, Germany
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is December (1020.3mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
Riem, Germany
- Average wind speed in September: 8.3km/h
The windiest month (with the highest average wind speed) is March (12.3km/h).
The calmest months (with the lowest average wind speed) are August and September (8.3km/h).
Average humidity in September
Riem, Germany
- Average humidity in September: 81%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Riem, Germany
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is August (79mm).
The driest month (with the least rainfall) is November (29mm).
Average rainfall days in September
Riem, Germany
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in September
Riem, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (170mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Riem, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Riem, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Riem, Germany
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is May (7.6 days).
Average UV index in September
Riem, Germany
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Riem, Germany
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Riem, Germany
- Average visibility in September: 8km
The months with the highest visibility are March, April, June, July and August (9km).
The months with the lowest visibility are January and February (7km).
