September weather forecast
El Serrat, Andorra

September

Weather in September

September ushers in the autumn season in El Serrat, yet the weather remains relatively warm and sunny. With the passing of summer, snowfall recurs, albeit at a low of 59mm (2.32"). Crisp morning air and vibrant fall hues start taking over the green landscapes of the city. September weather brings a comfortable warmth during daytime, while nights begin to feel cooler. A gradual increase in humidity is observed, creating a refreshing contrast after the summer heat.

Temperature

The onset of September in El Serrat brings a small shift in high-temperatures, falling from an agreeable 21.3°C (70.3°F) in August to a refreshing 16.8°C (62.2°F). El Serrat observes an average nighttime low-temperature of 6.3°C (43.3°F) during the month of September.

Humidity

In El Serrat, the average relative humidity in September is 75%.

Rainfall

In El Serrat, in September, it is raining for 14.7 days, with typically 55mm (2.17") of accumulated precipitation. Throughout the year, there are 141.6 rainfall days, and 804mm (31.65") of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, August through December. In El Serrat, in September, snow falls for 0.7 days, with typically accumulated 59mm (2.32") of snow. Throughout the year, there are 101.3 snowfall days, and 2847mm (112.09") 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, in El Serrat, sunrise is at 07:50 and sunset at 19:36 CEST.

Sunshine

In El Serrat, the average sunshine in September is 9h.

UV index

In El Serrat, Andorra, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 3 during September morphs into the following directions:
Exercise prevention - Precautions against solar damage are endorsed. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.

Frequently asked questions

What is the average September temperature in El Serrat?
An average high-temperature, in September, in El Serrat, is 16.8°C (62.2°F) and the average low-temperature is 6.3°C (43.3°F).
What is the average humidity in September in El Serrat?
In September, the average relative humidity in El Serrat, Andorra, is 75%.
How many days does it rain in September in El Serrat?
In El Serrat, Andorra, in September, it is raining for 14.7 days, with typically 55mm (2.17") of accumulated precipitation.
How many days does it snow in September in El Serrat?
In El Serrat, Andorra, in September, during 0.7 snowfall days, 59mm (2.32") of snow is typically accumulated.
How many hours of daylight does El Serrat have in September?
In September, the average day length in El Serrat is 12h and 29min.
When is the sunrise / sunset in September in El Serrat?
In September, on the first day of the month, sunrise is at 07:19 and sunset at 20:28. On the last day of the month, in El Serrat, sunrise is at 07:50 and sunset at 19:36 CEST.
How long on average sun shines in September in El Serrat?
The average sunshine duration in September in El Serrat, Andorra, is 9h.
What is the UV index intensity in September in El Serrat?
The average daily maximum UV index in September in El Serrat is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - El Serrat, Andorra
Average temperature in September
El Serrat, Andorra
  • Average high temperature in September: 16.8°C

The warmest month (with the highest average high temperature) is August (21.3°C).
The months with the lowest average high temperature are January and February (2.3°C).

  • Average low temperature in September: 6.3°C

The month with the highest average low temperature is August (9.7°C).
The coldest month (with the lowest average low temperature) is February (-5.8°C).

Average pressure in September - El Serrat, Andorra
Average pressure in September
El Serrat, Andorra
  • Average pressure in September: 1017.8mbar

The month with the highest atmospheric pressure is December (1021.4mbar).
The month with the lowest atmospheric pressure is April (1015.1mbar).

Average wind speed in September - El Serrat, Andorra
Average wind speed in September
El Serrat, Andorra
  • Average wind speed in September: 6.2km/h

The windiest month (with the highest average wind speed) is February (9.7km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).

Average humidity in September - El Serrat, Andorra
Average humidity in September
El Serrat, Andorra
  • Average humidity in September: 75%

The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are July and August (70%).

Average rainfall in September - El Serrat, Andorra
Average rainfall in September
El Serrat, Andorra
  • Average rainfall in September: 55mm

The wettest month (with the highest rainfall) is May (90mm).
The driest month (with the least rainfall) is February (36mm).

Average rainfall days in September - El Serrat, Andorra
Average rainfall days in September
El Serrat, Andorra
  • Average rainfall days in September: 14.7 days

The months with the highest number of rainy days are May and June (19.8 days).
The month with the least rainy days is February (3.8 days).

Average snowfall in September - El Serrat, Andorra
Average snowfall in September
El Serrat, Andorra
  • Average snowfall in September: 59mm

The month with the highest snowfall is March (501mm).
The month with the least snowfall is July (0mm).

Average snowfall days in September - El Serrat, Andorra
Average snowfall days in September
El Serrat, Andorra
  • Average snowfall days in September: 0.7 days

The month with the highest number of snowfall days is March (17.1 days).
The month with the least snowfall days is July (0.1 days).

Average daylight in September / Average sunshine in September - El Serrat, Andorra
Average daylight in September /
Average sunshine in September
El Serrat, Andorra
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).

Average sunshine days in September - El Serrat, Andorra
Average sunshine days in September
El Serrat, Andorra
  • Average sunshine days in September: 12.8 days

The month with the most sunshine days is October (18 days).
The month with the least sunshine days is May (6.6 days).

Average UV index in September - El Serrat, Andorra
Average UV index in September
El Serrat, Andorra
  • Average UV index in September: 3

The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in September - El Serrat, Andorra
Average cloud cover in September
El Serrat, Andorra
  • Average cloud cover in September: 29

The month with the most cloud cover is April (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in September - El Serrat, Andorra
Average visibility in September
El Serrat, Andorra
  • Average visibility in September: 9km

The months with the highest visibility are May, June, July, August, September, October and December (9km).
The months with the lowest visibility are January, February, March, April and November (8km).

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