September weather forecastChamilly, France
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Chamilly, France, with an average temperature varying between 21°C (69.8°F) and 10.7°C (51.3°F).Temperature
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's moderately hot 25.3°C (77.5°F) to a pleasant 21°C (69.8°F). Chamilly's temperature in September lowers to a consistent average of 10.7°C (51.3°F) during the nights.Humidity
In Chamilly, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall in Chamilly. Rain falls for 12 days and accumulates 29mm (1.14") of precipitation.Snowfall
In Chamilly, snow does not fall in April through September.Daylight
In September, the average length of the day is 12h and 33min.On the first day of the month, sunrise is at 07:01 and sunset at 20:20. On the last day of September, in Chamilly, sunrise is at 07:39 and sunset at 19:22 CEST.
Sunshine
In Chamilly, France, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Chamilly is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Exercise prevention - Precautions against solar damage are endorsed. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chamilly, France
- Average high temperature in September: 21°C
The warmest months (with the highest average high temperature) are July and August (25.3°C).
The month with the lowest average high temperature is January (5.2°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is January (0.1°C).
Average pressure in September
Chamilly, France
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is November (1015.6mbar).
Average wind speed in September
Chamilly, France
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is February (13km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).
Average humidity in September
Chamilly, France
- Average humidity in September: 77%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Chamilly, France
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is November (73mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days in September
Chamilly, France
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is June (19 days).
The month with the least rainy days is August (11.9 days).
Average snowfall in September
Chamilly, France
- Average snowfall in September: 0mm
The months with the highest snowfall are January and December (29mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Chamilly, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (4.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Chamilly, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in September
Chamilly, France
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is August (16.5 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in September
Chamilly, France
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Chamilly, France
- Average cloud cover in September: 33
The months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Chamilly, France
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, June, July and August (9km).
The months with the lowest visibility are January, May, September, October, November and December (8km).
