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 onset of September in Andorra la Vella is marked by a minor decrease in temperature, transitioning from an agreeable 20.6°C (69.1°F) in August to an enjoyable 16.3°C (61.3°F). During the September nights, an average temperature of 5.4°C (41.7°F) is observed.Humidity
In Andorra la Vella, the average relative humidity in September is 76%.Rainfall
In Andorra la Vella, during September, the rain falls for 13.9 days and regularly aggregates up to 54mm (2.13") of precipitation. Throughout the year, there are 138 rainfall days, and 753mm (29.65") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 18mm (0.71") of snow. In Andorra la Vella, during the entire year, snow falls for 73 days and aggregates up to 1874mm (73.78") of snow.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 07:19 and sunset at 20:28. On the last day of September, in Andorra la Vella, sunrise is at 07:50 and sunset at 19:36 CEST.
Sunshine
The average sunshine in September is 8.5h.UV index
In Andorra la Vella, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What are the temperatures in Andorra la Vella in September?
What is the average humidity in September in Andorra la Vella?
How many days does it rain in September in Andorra la Vella?
When does it start to snow in Andorra la Vella?
How many hours of daylight does Andorra la Vella have in September?
When is the sunrise / sunset in September in Andorra la Vella?
How long on average sun shines in September in Andorra la Vella?
What is the UV index reading in September in Andorra la Vella?
Average temperature in September
Andorra la Vella, Andorra
- Average high temperature in September: 16.3°C
The warmest month (with the highest average high temperature) is July (20.8°C).
The month with the lowest average high temperature is February (1.5°C).
- Average low temperature in September: 5.4°C
The month with the highest average low temperature is August (8.9°C).
The coldest month (with the lowest average low temperature) is February (-6.9°C).
Average pressure in September
Andorra la Vella, Andorra
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is December (1021.4mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in September
Andorra la Vella, Andorra
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is February (10.9km/h).
The calmest month (with the lowest average wind speed) is August (7km/h).
Average humidity in September
Andorra la Vella, Andorra
- Average humidity in September: 76%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in September
Andorra la Vella, Andorra
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is October (86mm).
The driest month (with the least rainfall) is February (34mm).
Average rainfall days in September
Andorra la Vella, Andorra
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in September
Andorra la Vella, Andorra
- Average snowfall in September: 18mm
The month with the highest snowfall is January (483mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Andorra la Vella, Andorra
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Andorra la Vella, Andorra
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Andorra la Vella, Andorra
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is April (7.9 days).
Average UV index in September
Andorra la Vella, Andorra
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Andorra la Vella, Andorra
- Average cloud cover in September: 34
The month with the most cloud cover is April (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Andorra la Vella, Andorra
- Average visibility in September: 9km
The months with the highest visibility are June, July, August, September, October and December (9km).
The months with the lowest visibility are January, February, March, April, May and November (8km).
Andorra la Vella, Andorra
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