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
Weather in September
Temperature
The shift from August to September corresponds with a decrease in the average high-temperature, down to a pleasant 22.3°C (72.1°F) from a warm 27.3°C (81.1°F). Throughout September, the nighttime temperature in Alissas averages to a cool 11.6°C (52.9°F).Humidity
In Alissas, the average relative humidity in September is 71%.Rainfall
In September, the rain falls for 9.7 days. Throughout September, 34mm (1.34") of precipitation is accumulated. In Alissas, during the entire year, the rain falls for 147.6 days and collects up to 592mm (23.31") of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Alissas is 12h and 31min.On the first day of September in Alissas, sunrise is at 07:04 and sunset at 20:18. On the last day of the month, sunrise is at 07:38 and sunset at 19:23 CEST.
Sunshine
The average sunshine in September in Alissas is 9.2h.UV index
In September, the average daily maximum UV index in Alissas, France, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 5 during September leads to these advisories:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the usual temperature for Alissas in September?
What is the average humidity in September in Alissas?
How much does it rain in Alissas in September?
When it does not snow in Alissas?
How many hours of daylight does Alissas have in September?
What time are sunrise and sunset in September in Alissas?
How many hours of sunshine does Alissas have in September?
What is the UV index intensity in September in Alissas?
Average temperature in September
Alissas, France
- Average high temperature in September: 22.3°C
The warmest month (with the highest average high temperature) is July (27.4°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 11.6°C
The months with the highest average low temperature are July and August (14.9°C).
The coldest month (with the lowest average low temperature) is February (0.3°C).
Average pressure in September
Alissas, France
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.1mbar).
Average wind speed in September
Alissas, France
- Average wind speed in September: 9.5km/h
The windiest month (with the highest average wind speed) is February (11.6km/h).
The calmest month (with the lowest average wind speed) is November (9.4km/h).
Average humidity in September
Alissas, France
- Average humidity in September: 71%
The months with the highest relative humidity are November and December (84%).
The months with the lowest relative humidity are July and August (64%).
Average rainfall in September
Alissas, France
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is November (104mm).
The driest month (with the least rainfall) is February (32mm).
Average rainfall days in September
Alissas, France
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
Alissas, France
- Average snowfall in September: 0mm
The month with the highest snowfall is November (57mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Alissas, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.6 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
Alissas, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The months with the least sunshine are January and November (Average sunshine: 5h and 36min).
Average sunshine days in September
Alissas, France
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in September
Alissas, France
- Average UV index in September: 5
The months with the highest UV index are June and 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
Alissas, France
- Average cloud cover in September: 23
The month with the most cloud cover is November (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Alissas, France
- Average visibility in September: 9km
The months with the highest visibility are July and August (10km).
The months with the lowest visibility are January and November (8km).
Alissas, France
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