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
September implies a soft temperature shift, with average high-temperatures reducing from August's moderately hot 23.5°C (74.3°F) to a comfortable 18.7°C (65.7°F). Riem's temperature drops to an average low of 9.1°C (48.4°F) during the nights of September.Humidity
In September, the average relative humidity in Riem is 81%.Rainfall
In Riem, during September, the rain falls for 14 days and regularly aggregates up to 41mm (1.61") of precipitation. In Riem, during the entire year, the rain falls for 173.5 days and collects up to 625mm (24.61") of precipitation.Snowfall
In Riem, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 35min.On the first day of September in Riem, sunrise is at 06:31 and sunset at 19:54. On the last day of the month, sunrise is at 07:11 and sunset at 18:54 CEST.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index in Riem is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Take precautions - Protection against sun damage is advised. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What are September temperatures in Riem?
What is the average humidity in September in Riem?
How much does it rain in Riem in September?
When it does not snow in Riem?
Does it snow in Riem in September?
What is the average length of the day in September in Riem?
What time are sunrise and sunset in September in Riem?
How long on average sun shines in September in Riem?
What is the UV index intensity in September in Riem?
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 4min
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 4min
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).
Riem, Germany
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