September weather forecastMertendorf, Germany
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Mertendorf, Germany, with an average temperature ranging between max 19.2°C (66.6°F) and min 9.9°C (49.8°F).Temperature
In September, the average high-temperature marginally decreases from a moderately hot 23.8°C (74.8°F) in August to a comfortable 19.2°C (66.6°F). In the month of September, the nighttime temperature in Mertendorf dips to a steady average of 9.9°C (49.8°F).Humidity
In September, the average relative humidity is 75%.Rainfall
In Mertendorf, Germany, during September, the rain falls for 12.3 days and regularly aggregates up to 34mm (1.34") of precipitation. Throughout the year, in Mertendorf, there are 156.8 rainfall days, and 418mm (16.46") of precipitation is accumulated.Snowfall
In Mertendorf, snow does not fall in June through September.Daylight
In Mertendorf, the average length of the day in September is 12h and 38min.On the first day of September in Mertendorf, sunrise is at 06:26 and sunset at 19:58. On the last day of the month, sunrise is at 07:12 and sunset at 18:52 CEST.
Sunshine
In Mertendorf, Germany, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September in Mertendorf, Germany, is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 4 during September translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. 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
Mertendorf, Germany
- Average high temperature in September: 19.2°C
The warmest months (with the highest average high temperature) are July and August (23.8°C).
The month with the lowest average high temperature is January (2°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).
Average pressure in September
Mertendorf, Germany
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is October (1017.8mbar).
The month with the lowest atmospheric pressure is November (1014.6mbar).
Average wind speed in September
Mertendorf, Germany
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is December (15.7km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in September
Mertendorf, Germany
- Average humidity in September: 75%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Mertendorf, Germany
- Average rainfall in September: 34mm
The wettest months (with the highest rainfall) are May and August (52mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Mertendorf, Germany
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (8 days).
Average snowfall in September
Mertendorf, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (77mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Mertendorf, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mertendorf, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Mertendorf, Germany
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Mertendorf, 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, March, November and December (UV index 2).
Average cloud cover in September
Mertendorf, Germany
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Mertendorf, Germany
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and November (9km).
The months with the lowest visibility are January, February, October and December (8km).
