December weather forecastRillo, Spain

December

Weather in December

The first month of the winter, December, is also a frosty month in Rillo, Spain, with temperature in the range of an average low of 0.9°C (33.6°F) and an average high of 8.6°C (47.5°F).

Temperature

As Rillo steps into December, the average high-temperature holds at a chilly 8.6°C (47.5°F), hinting at a minor fluctuation from the prior month. An average low-temperature of 0.9°C (33.6°F) is observed during the December nights.

Humidity

The average relative humidity in December is 73%.

Rainfall

In Rillo, Spain, in December, it is raining for 7.8 days, with typically 17mm (0.67") of accumulated precipitation. Throughout the year, there are 114.9 rainfall days, and 308mm (12.13") of precipitation is accumulated.

Snowfall

Months with snowfall in Rillo, Spain, are January through May, November and December. In Rillo, Spain, in December, snow falls for 1.9 days, with typically accumulated 11mm (0.43") of snow. In Rillo, during the entire year, snow falls for 17.7 days and aggregates up to 171mm (6.73") of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year in Rillo.
On the first day of December, sunrise is at 08:09 and sunset at 17:37. On the last day of the month, sunrise is at 08:27 and sunset at 17:46 CET.

Sunshine

The average sunshine in December in Rillo is 6.6h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rillo. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.

Frequently asked questions

Rillo in December has an average high-temperature of 8.6°C (47.5°F) and an average low-temperature of 0.9°C (33.6°F). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is appraised at 29°C (84.2°F).

In December, the average relative humidity in Rillo, Spain, is 73%.

In Rillo, Spain, in December, it is raining for 7.8 days, with typically 17mm (0.67") of accumulated precipitation.

In Rillo, Spain, in December, during 1.9 snowfall days, 11mm (0.43") of snow is typically accumulated.

The month with the shortest days in Rillo is December, with an average of 9h and 18min of daylight.

The average day length in December in Rillo is 9h and 19min.

In December, on the first day of the month, sunrise is at 08:09 and sunset at 17:37. On the last day of the month, sunrise is at 08:27 and sunset at 17:46 CET.

In Rillo, the average sunshine duration in December is 6.6h.

The months with the lowest UV index in Rillo are January, February, November and December, with an average maximum UV index of 2.

In Rillo, Spain, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents 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
Rillo, Spain

  • Average high temperature in December: 8.6°C

The warmest months (with the highest average high temperature) are July and August (28.5°C).
The month with the lowest average high temperature is January (7.2°C).

  • Average low temperature in December: 0.9°C

The month with the highest average low temperature is August (15.6°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).

Average pressure in December
Rillo, 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 (1014.9mbar).

Average wind speed in December
Rillo, Spain

  • Average wind speed in December: 13.8km/h

The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (9.7km/h).

Average humidity in December
Rillo, Spain

  • Average humidity in December: 73%

The month with the highest relative humidity is January (75%).
The months with the lowest relative humidity are July and August (47%).

Average rainfall in December
Rillo, Spain

  • Average rainfall in December: 17mm

The wettest month (with the highest rainfall) is April (48mm).
The driest months (with the least rainfall) are July and August (12mm).

Average rainfall days in December
Rillo, Spain

  • Average rainfall days in December: 7.8 days

The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is July (6.1 days).

Average snowfall in December
Rillo, Spain

  • Average snowfall in December: 11mm

The month with the highest snowfall is March (48mm).
The months with the least snowfall are June, July, August, September and October (0mm).

Average snowfall days in December
Rillo, Spain

  • Average snowfall days in December: 1.9 days

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

  • Average daylight in December: 9h and 18min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 6h and 36min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 24min).

Average sunshine days in December
Rillo, Spain

  • Average sunshine days in December: 21.1 days

The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is April (13.2 days).

Average UV index in December
Rillo, Spain

  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Rillo, Spain

  • Average cloud cover in December: 30

The months with the most cloud cover are January and November (Cloud cover 37).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in December
Rillo, Spain

  • Average visibility in December: 10km

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