September weather forecastLes Châtelets, France
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Les Châtelets, France, with an average temperature varying between 20.1°C (68.2°F) and 11.1°C (52°F).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a moderately hot 23.4°C (74.1°F) in August to a pleasant 20.1°C (68.2°F). Les Châtelets's nights in September cool down to an average low-temperature of 11.1°C (52°F).Humidity
In Les Châtelets, the average relative humidity in September is 76%.Rainfall
The month with the least rainfall in Les Châtelets, France, is September, when the rain falls for 11.7 days and typically collects 23mm (0.91") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Les Châtelets, the average length of the day in September is 12h and 35min.On the first day of September, sunrise is at 07:13 and sunset at 20:37. On the last day of the month, sunrise is at 07:54 and sunset at 19:36 CEST.
Sunshine
In Les Châtelets, France, the average sunshine in September is 7.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Undertake precautions - It is suggested to shield oneself from sunburn. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Les Châtelets, France
- Average high temperature in September: 20.1°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is February (1.2°C).
Average pressure in September
Les Châtelets, France
- Average pressure in September: 1018.1mbar
The months with the highest atmospheric pressure are September and December (1018.1mbar).
The month with the lowest atmospheric pressure is November (1013.1mbar).
Average wind speed in September
Les Châtelets, France
- Average wind speed in September: 11.8km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity in September
Les Châtelets, France
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Les Châtelets, France
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is June (58mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in September
Les Châtelets, France
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in September
Les Châtelets, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (26mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Les Châtelets, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Les Châtelets, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Les Châtelets, France
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in September
Les Châtelets, 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
Les Châtelets, France
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 40).
Average visibility in September
Les Châtelets, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, May and June (8km).
