September weather forecastMertrud, France
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Mertrud, France, with temperature in the range of an average low of 10.5°C (50.9°F) and an average high of 20.5°C (68.9°F).Temperature
September brings a minor shift in the average high-temperature, adjusting from a warm 24.3°C (75.7°F) in August to an agreeable 20.5°C (68.9°F). Throughout September, the temperature falls to an average low of 10.5°C (50.9°F).Humidity
In Mertrud, France, the average relative humidity in September is 77%.Rainfall
In Mertrud, during September, the rain falls for 11.5 days and regularly aggregates up to 35mm (1.38") of precipitation. In Mertrud, during the entire year, the rain falls for 188.1 days and collects up to 585mm (23.03") of precipitation.Snowfall
April through October are months without snowfall in Mertrud.Daylight
The average length of the day in September is 12h and 35min.On the first day of September in Mertrud, sunrise is at 06:58 and sunset at 20:21. On the last day of the month, sunrise is at 07:39 and sunset at 19:21 CEST.
Sunshine
The average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Mertrud is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Heed the precautions - It is counselled to guard against solar damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mertrud, France
- Average high temperature in September: 20.5°C
The warmest months (with the highest average high temperature) are July and August (24.3°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (0.3°C).
Average pressure in September
Mertrud, France
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1019.1mbar).
The month with the lowest atmospheric pressure is November (1014.4mbar).
Average wind speed in September
Mertrud, France
- Average wind speed in September: 9.9km/h
The windiest month (with the highest average wind speed) is December (14.3km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).
Average humidity in September
Mertrud, France
- Average humidity in September: 77%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Mertrud, France
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the least rainfall) is April (34mm).
Average rainfall days in September
Mertrud, France
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is September (11.5 days).
Average snowfall in September
Mertrud, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (48mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Mertrud, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Mertrud, France
- 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 12min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in September
Mertrud, France
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in September
Mertrud, France
- 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, November and December (UV index 2).
Average cloud cover in September
Mertrud, France
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 36).
Average visibility in September
Mertrud, France
- Average visibility in September: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
