September weather forecastLion-devant-Dun, France
September
Weather in September
September, the first month of the autumn in Lion-devant-Dun, is also an enjoyable month, with an average temperature ranging between max 18.5°C (65.3°F) and min 9.3°C (48.7°F).Temperature
As September arrives, Lion-devant-Dun's weather displays a minor decrease in high-temperatures, transitioning from August's pleasant 22.3°C (72.1°F) to a comfortable 18.5°C (65.3°F). In September, Lion-devant-Dun experiences a temperature dip to an average of 9.3°C (48.7°F) at night.Humidity
In Lion-devant-Dun, the average relative humidity in September is 81%.Rainfall
In Lion-devant-Dun, in September, during 12.5 rainfall days, 41mm (1.61") of precipitation is typically accumulated. Throughout the year, in Lion-devant-Dun, there are 179.3 rainfall days, and 612mm (24.09") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Lion-devant-Dun, France.Daylight
The average length of the day in September is 12h and 36min.On the first day of September in Lion-devant-Dun, sunrise is at 06:55 and sunset at 20:22. On the last day of the month, sunrise is at 07:38 and sunset at 19:19 CEST.
Sunshine
The average sunshine in September is 7.8h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Take precautions - Protection against skin and eye damage is obliged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lion-devant-Dun, France
- Average high temperature in September: 18.5°C
The warmest months (with the highest average high temperature) are July and August (22.3°C).
The month with the lowest average high temperature is January (3.6°C).
- Average low temperature in September: 9.3°C
The months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).
Average pressure in September
Lion-devant-Dun, France
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).
Average wind speed in September
Lion-devant-Dun, France
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is February (16.1km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).
Average humidity in September
Lion-devant-Dun, France
- Average humidity in September: 81%
The month with the highest relative humidity is December (92%).
The months with the lowest relative humidity are April and August (78%).
Average rainfall in September
Lion-devant-Dun, France
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the least rainfall) is April (33mm).
Average rainfall days in September
Lion-devant-Dun, France
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (11.9 days).
Average snowfall in September
Lion-devant-Dun, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (62mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Lion-devant-Dun, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lion-devant-Dun, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Lion-devant-Dun, France
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The months with the least sunshine days are June, November and December (9.6 days).
Average UV index in September
Lion-devant-Dun, 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, November and December (UV index 2).
Average cloud cover in September
Lion-devant-Dun, France
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Lion-devant-Dun, France
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The month with the lowest visibility is November (7km).
