Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a warm 24.6°C (76.3°F) in August to a pleasant 20.4°C (68.7°F). September brings with it a nighttime average temperature of 10.1°C (50.2°F).Humidity
In Dettey, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 31mm (1.22") of precipitation.Snowfall
In Dettey, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 33min.On the first day of September, sunrise is at 07:03 and sunset at 20:22. On the last day of the month, sunrise is at 07:41 and sunset at 19:24 CEST.
Sunshine
In Dettey, the average sunshine in September is 8.1h.UV index
In Dettey, France, the average daily maximum UV index in September 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 average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Dettey?
What is the average humidity in September in Dettey?
What is the driest month in Dettey?
How much does it rain in Dettey in September?
When it does not snow in Dettey?
Does it snow in Dettey in September?
How many hours of daylight does Dettey have in September?
When is the sunrise / sunset in September in Dettey?
How many hours of sunshine does Dettey have in September?
What is the UV index intensity in September in Dettey?
Average temperature in September
Dettey, France
- Average high temperature in September: 20.4°C
The warmest month (with the highest average high temperature) is August (24.6°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is July (13.6°C).
The coldest month (with the lowest average low temperature) is February (-0.2°C).
Average pressure in September
Dettey, 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 (1015.5mbar).
Average wind speed in September
Dettey, France
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is February (12.5km/h).
The calmest month (with the lowest average wind speed) is August (7.7km/h).
Average humidity in September
Dettey, France
- Average humidity in September: 79%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Dettey, France
- Average rainfall in September: 31mm
The wettest months (with the highest rainfall) are May and June (68mm).
The driest month (with the least rainfall) is September (31mm).
Average rainfall days in September
Dettey, France
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is February (12 days).
Average snowfall in September
Dettey, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (47mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Dettey, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dettey, France
- Average daylight in September: 12h and 4min
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 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in September
Dettey, France
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in September
Dettey, 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, October, November and December (UV index 2).
Average cloud cover in September
Dettey, France
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Dettey, France
- Average visibility in September: 8km
The month with the highest visibility is August (9km).
The month with the lowest visibility is November (7km).
