December weather forecastSierro, Spain

December

Weather in December

December, the first month of the winter in Sierro, is still a mild month, with an average temperature fluctuating between 15.4°C (59.7°F) and 10.3°C (50.5°F).

Temperature

December ushers in an average high-temperature of a still refreshing 15.4°C (59.7°F), aligning closely with the preceding month. During December, Sierro consistently records a temperature low averaging a cool 10.3°C (50.5°F).

Humidity

December is the most humid month, with an average relative humidity of 66%.

Rainfall

The months with the most rainfall are March and December, with an average 13mm (0.51") of precipitation.

Daylight

December has the shortest days of the year in Sierro, Spain, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 08:05 and sunset at 17:52. On the last day of December, sunrise is at 08:23 and sunset at 18:02 CET.

Sunshine

December has the least sunshine of the year, with an average of 7.4h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 4 in December translates into these instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.

Updated: Jan 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Sierro, 15.4°C (59.7°F) is the average high-temperature and 10.3°C (50.5°F) is the average low-temperature during December. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 31°C (87.8°F).

The most humid month in Sierro, Spain, is December, with an average relative humidity of 66%.

The average relative humidity in December is 66%.

The wettest months in Sierro, Spain, are March and December, with an average 13mm (0.51") of rainfall.

In Sierro, in December, during 4.5 rainfall days, 13mm (0.51") of precipitation is typically accumulated.

With an average of 9h and 36min of daylight, December has the shortest days of the year in Sierro.

The average day length in December in Sierro is 9h and 38min.

On the first day of December in Sierro, Spain, sunrise is at 08:05 and sunset at 17:52. On the last day of the month, sunrise is at 08:23 and sunset at 18:02 CET.

The month with the least sunshine in Sierro, Spain, is December, with an average of 7.4h of sunshine.

In Sierro, Spain, the average sunshine duration in December is 7.4h.

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Sierro.

In Sierro, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

17.6°C

15.4°C

14.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

14.2km/h

13.7km/h

14.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

25.7

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Sierro, Spain

Average high temperature in December: 15.4°C

The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (14.3°C).

Average low temperature in December: 10.3°C

The month with the highest average low temperature is August (23.6°C).
The coldest month (with the lowest average low temperature) is February (8.9°C).

Average pressure in December
Sierro, Spain

Average pressure in December: 1022.3mbar

The month with the highest atmospheric pressure is December (1022.3mbar).
The months with the lowest atmospheric pressure are April and July (1015.1mbar).

Average wind speed in December
Sierro, Spain

Average wind speed in December: 12.6km/h

The windiest month (with the highest average wind speed) is March (15.6km/h).
The calmest month (with the lowest average wind speed) is October (11.4km/h).

Average humidity in December
Sierro, Spain

Average humidity in December: 66%

The month with the highest relative humidity is December (66%).
The month with the lowest relative humidity is July (54%).

Average rainfall in December
Sierro, Spain

Average rainfall in December: 13mm

The wettest months (with the highest rainfall) are March and December (13mm).
The driest month (with the least rainfall) is July (2mm).

Average rainfall days in December
Sierro, Spain

Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is August (2.4 days).

Average daylight in December /
Average sunshine in December
Sierro, Spain

Average daylight in December: 9h and 36min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

Average sunshine in December: 7h and 24min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).

Average sunshine days in December
Sierro, Spain

Average sunshine days in December: 25.7 days

The month with the most sunshine days is July (27.5 days).
The month with the least sunshine days is April (20.9 days).

Average UV index in December
Sierro, Spain

Average UV index in December: 4

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

Average cloud cover in December
Sierro, Spain

Average cloud cover in December: 19

The month with the most cloud cover is April (Cloud cover 21).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in December
Sierro, Spain

Average visibility in December: 10km

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