September weather forecastChécy, France
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Chécy, France, with an average temperature fluctuating between 21.1°C (70°F) and 11.7°C (53.1°F).Temperature
In Chécy, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 24.8°C (76.6°F) to an agreeable 21.1°C (70°F). In September, the average low-temperature records at a cool 11.7°C (53.1°F) during the nights.Humidity
The average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall in Chécy, France. Rain falls for 10.5 days and accumulates 21mm (0.83") of precipitation.Snowfall
April through October are months without snowfall in Chécy.Daylight
In September, the average length of the day is 12h and 34min.On the first day of September, sunrise is at 07:10 and sunset at 20:32. On the last day of the month, sunrise is at 07:50 and sunset at 19:33 CEST.
Sunshine
In Chécy, the average sunshine in September is 7.8h.UV index
In Chécy, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 4 during September leads to these instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chécy, France
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is August (24.8°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in September
Chécy, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is November (1014mbar).
Average wind speed in September
Chécy, France
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is February (16km/h).
The calmest month (with the lowest average wind speed) is August (10.2km/h).
Average humidity in September
Chécy, France
- Average humidity in September: 73%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Chécy, France
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is June (51mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days in September
Chécy, France
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in September
Chécy, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (15mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Chécy, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 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
Chécy, 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 30min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Chécy, France
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is December (11.3 days).
Average UV index in September
Chécy, 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
Chécy, France
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 36).
Average visibility in September
Chécy, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and December (9km).
The months with the lowest visibility are January and November (8km).
