September weather forecastDortan, France
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Dortan, France, with an average temperature ranging between max 17.5°C (63.5°F) and min 8.2°C (46.8°F).Temperature
The onset of September is marked by a minor decrease in temperature, transitioning from an agreeable 21.8°C (71.2°F) in August to a refreshing 17.5°C (63.5°F). Dortan, during the nights of September, experiences an average temperature drop to a frosty 8.2°C (46.8°F).Humidity
In Dortan, the average relative humidity in September is 84%.Rainfall
The month with the least rainfall is September, when the rain falls for 16.2 days and typically collects 84mm (3.31") of precipitation.Snowfall
January through May, September through December are months with snowfall in Dortan. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Dortan, there are 91.9 snowfall days, and 3413mm (134.37") of snow is accumulated.Daylight
In Dortan, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 06:58 and sunset at 20:16. On the last day of the month, sunrise is at 07:35 and sunset at 19:19 CEST.
Sunshine
In Dortan, the average sunshine in September is 7.8h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 3 in September translates into these instructions:
Take precautions - Protection against sun damage is advised. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dortan, France
- Average high temperature in September: 17.5°C
The warmest months (with the highest average high temperature) are July and August (21.8°C).
The month with the lowest average high temperature is January (2.3°C).
- Average low temperature in September: 8.2°C
The month with the highest average low temperature is July (11.2°C).
The coldest month (with the lowest average low temperature) is February (-3.7°C).
Average pressure in September
Dortan, France
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1021.2mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Dortan, France
- Average wind speed in September: 7.8km/h
The windiest month (with the highest average wind speed) is February (10.8km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).
Average humidity in September
Dortan, France
- Average humidity in September: 84%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are July and August (81%).
Average rainfall in September
Dortan, France
- Average rainfall in September: 84mm
The wettest month (with the highest rainfall) is December (173mm).
The driest month (with the least rainfall) is September (84mm).
Average rainfall days in September
Dortan, France
- Average rainfall days in September: 16.2 days
The months with the highest number of rainy days are May and June (22.8 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in September
Dortan, France
- Average snowfall in September: 1mm
The month with the highest snowfall is December (833mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Dortan, France
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Dortan, France
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days in September
Dortan, France
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is October (13.5 days).
The month with the least sunshine days is June (5.9 days).
Average UV index in September
Dortan, France
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Dortan, France
- Average cloud cover in September: 42
The months with the most cloud cover are January, February and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Dortan, France
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (8km).
The month with the lowest visibility is January (7km).
