December weather forecast
San Millán de los Caballeros, Spain

December

Weather in December

December, the first month of the winter in San Millán de los Caballeros, is still a chilly month, with temperature in the range of an average low of 0.9°C (33.6°F) and an average high of 8.3°C (46.9°F).

Temperature

December ushers in an average high-temperature of a frosty 8.3°C (46.9°F), aligning closely with the preceding month. In the month of December, San Millán de los Caballeros's average low-temperature falls to a wintry 0.9°C (33.6°F).

Humidity

In San Millán de los Caballeros, the average relative humidity in December is 81%.

Rainfall

In San Millán de los Caballeros, in December, during 7.7 rainfall days, 18mm (0.71") of precipitation is typically accumulated. Throughout the year, there are 101.1 rainfall days, and 211mm (8.31") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. In San Millán de los Caballeros, in December, during 1.5 snowfall days, 11mm (0.43") of snow is typically accumulated. Throughout the year, there are 13.6 snowfall days, and 98mm (3.86") of snow is accumulated.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 08:31 and sunset at 17:50. On the last day of December, sunrise is at 08:51 and sunset at 17:59 CET.

Sunshine

The month with the least sunshine is December, with an average of 5.8h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in San Millán de los Caballeros, Spain. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

What is the temperature in December?
In San Millán de los Caballeros, in December, the average high-temperature is 8.3°C (46.9°F), and the average low-temperature is 0.9°C (33.6°F).
What is the average humidity in December?
In San Millán de los Caballeros, the average relative humidity in December is 81%.
How much does it rain in December?
In December, in San Millán de los Caballeros, the rain falls for 7.7 days. Throughout December, 18mm (0.71") of precipitation is accumulated.
How many days does it snow in December?
In San Millán de los Caballeros, in December, during 1.5 snowfall days, 11mm (0.43") of snow is typically accumulated.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
How many hours of daylight does San Millán de los Caballeros have in December?
The average day length in December in San Millán de los Caballeros is 9h and 9min.
When is the sunrise / sunset in December?
On the first day of December, sunrise is at 08:31 and sunset at 17:50. On the last day of the month, sunrise is at 08:51 and sunset at 17:59 CET.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5.8h of sunshine.
How many hours of sunshine does San Millán de los Caballeros have in December?
In December, the average sunshine duration is 5.8h.
What are the months with the lowest UV index?
The months with the lowest UV index in San Millán de los Caballeros are January, February, November and December, with an average maximum UV index of 2.
What is the UV index reading in December?
In San Millán de los Caballeros, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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 December
San Millán de los Caballeros, Spain
  • Average high temperature in December: 8.3°C

The warmest month (with the highest average high temperature) is August (26.8°C).
The month with the lowest average high temperature is January (7.5°C).

  • Average low temperature in December: 0.9°C

The month with the highest average low temperature is July (12.7°C).
The coldest month (with the lowest average low temperature) is February (0.3°C).

Average pressure in December
San Millán de los Caballeros, Spain
  • Average pressure in December: 1022.5mbar

The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).

Average wind speed in December
San Millán de los Caballeros, Spain
  • Average wind speed in December: 9.9km/h

The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is September (9km/h).

Average humidity in December
San Millán de los Caballeros, Spain
  • Average humidity in December: 81%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (57%).

Average rainfall in December
San Millán de los Caballeros, Spain
  • Average rainfall in December: 18mm

The wettest month (with the highest rainfall) is November (27mm).
The driest month (with the least rainfall) is August (7mm).

Average rainfall days in December
San Millán de los Caballeros, Spain
  • Average rainfall days in December: 7.7 days

The month with the highest number of rainy days is April (11.8 days).
The month with the least rainy days is August (3.3 days).

Average snowfall in December
San Millán de los Caballeros, Spain
  • Average snowfall in December: 11mm

The month with the highest snowfall is January (25mm).
The months with the least snowfall are June, July, August, September and October (0mm).

Average snowfall days in December
San Millán de los Caballeros, Spain
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
San Millán de los Caballeros, Spain
  • Average daylight in December: 9h and 1min

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 12min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in December
San Millán de los Caballeros, Spain
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is April (14.8 days).

Average UV index in December
San Millán de los Caballeros, Spain
  • Average UV index in December: 2

The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
San Millán de los Caballeros, Spain
  • Average cloud cover in December: 39

The months with the most cloud cover are January and November (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in December
San Millán de los Caballeros, Spain
  • Average visibility in December: 9km

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).

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