September weather forecastCailly, France
September
Weather in September
September, the first month of the autumn in Cailly, is also an agreeable month, with an average temperature fluctuating between 10.8°C (51.4°F) and 20.2°C (68.4°F).Temperature
Cailly's September weather features a light decline in high-temperatures, reducing from a moderately hot 23.3°C (73.9°F) in August to a pleasant 20.2°C (68.4°F). In the month of September, Cailly experiences an average low-temperature of 10.8°C (51.4°F).Humidity
In September, the average relative humidity is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.7 days and typically collects 19mm (0.75") of precipitation.Snowfall
May through October are months without snowfall in Cailly.Daylight
In September, the average length of the day is 12h and 36min.On the first day of September, sunrise is at 07:11 and sunset at 20:38. On the last day of the month, sunrise is at 07:54 and sunset at 19:35 CEST.
Sunshine
In September, the average sunshine is 7.4h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cailly, France
- Average high temperature in September: 20.2°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (13.2°C).
The coldest months (with the lowest average low temperature) are January and February (1.3°C).
Average pressure in September
Cailly, France
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is September (1018.1mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).
Average wind speed in September
Cailly, France
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is February (17.4km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).
Average humidity in September
Cailly, France
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Cailly, France
- Average rainfall in September: 19mm
The wettest month (with the highest rainfall) is June (48mm).
The driest month (with the least rainfall) is September (19mm).
Average rainfall days in September
Cailly, France
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is January (14.8 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
Cailly, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Cailly, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Cailly, 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 12min).
- Average sunshine in September: 7h and 24min
The months with the most sunshine are June and July (Average sunshine: 9h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Cailly, France
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is September (17.8 days).
The month with the least sunshine days is January (11.6 days).
Average UV index in September
Cailly, France
- Average UV index in September: 4
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
Cailly, France
- Average cloud cover in September: 41
The month with the most cloud cover is November (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 41).
Average visibility in September
Cailly, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, July, August, September, October and December (9km).
The months with the lowest visibility are January, May, June and November (8km).
