September weather forecastLailly, France
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Lailly, France, with temperature in the range of an average high of 21.1°C (70°F) and an average low of 11.4°C (52.5°F).Temperature
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a moderately hot 25.3°C (77.5°F) to a pleasant 21.1°C (70°F). In Lailly, the average nighttime temperature during September is a cool 11.4°C (52.5°F).Humidity
The average relative humidity in September in Lailly is 74%.Rainfall
September is the month with the least rainfall. Rain falls for 11.1 days and accumulates 25mm (0.98") of precipitation.Snowfall
April through October are months without snowfall in Lailly, France.Daylight
In September, the average length of the day in Lailly is 12h and 35min.On the first day of September in Lailly, sunrise is at 07:04 and sunset at 20:27. On the last day of the month, sunrise is at 07:44 and sunset at 19:26 CEST.
Sunshine
The average sunshine in September in Lailly, France, is 7.9h.UV index
In Lailly, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lailly, France
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is August (25.3°C).
The month with the lowest average high temperature is January (5.6°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).
Average pressure in September
Lailly, 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 (1014.3mbar).
Average wind speed in September
Lailly, France
- Average wind speed in September: 9.7km/h
The windiest month (with the highest average wind speed) is February (13.9km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).
Average humidity in September
Lailly, France
- Average humidity in September: 74%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Lailly, France
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is June (58mm).
The driest month (with the least rainfall) is September (25mm).
Average rainfall days in September
Lailly, France
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is September (11.1 days).
Average snowfall in September
Lailly, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (30mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Lailly, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.8 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
Lailly, 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 24min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Lailly, France
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is June (8.4 days).
Average UV index in September
Lailly, France
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Lailly, France
- Average cloud cover in September: 35
The months with the most cloud cover are January and December (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in September
Lailly, France
- Average visibility in September: 9km
The months with the highest visibility are March, April, July, August and September (9km).
The months with the lowest visibility are January, February, May, June, October, November and December (8km).
