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
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from an agreeable 20.6°C (69.1°F) in August to a refreshing 16.3°C (61.3°F). An average low-temperature of 5.4°C (41.7°F) is observed during September nights in Andorra la Vella.Humidity
The average relative humidity in September is 76%.Rainfall
In Andorra la Vella, in September, it is raining for 13.9 days, with typically 54mm (2.13") of accumulated precipitation. Throughout the year, in Andorra la Vella, there are 138 rainfall days, and 753mm (29.65") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Andorra la Vella. September is the first month it typically snows in Andorra la Vella, Andorra. Throughout September, in the average 0.4 snowfall days, it receives 18mm (0.71") of snow. Throughout the year, in Andorra la Vella, Andorra, there are 73 snowfall days, and 1874mm (73.78") of snow is accumulated.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, sunrise is at 07:50 and sunset at 19:36 CEST.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index in Andorra la Vella is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 3 in September leads to these guidelines:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Always opt for UVA and UVB-resistant sunglasses on radiant days. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Andorra la Vella?
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 are sunrise and sunset in September in Andorra la Vella?
How many hours of sunshine does Andorra la Vella have in September?
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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