December weather forecastRiós, Spain

December

Weather in December

The first month of the winter, December, is still a chilly month in Riós, Spain, with temperature in the range of an average high of 9.8°C (49.6°F) and an average low of 2.5°C (36.5°F).

Temperature

The introduction of December notes a subtle temperature variation to a chilly 9.8°C (49.6°F) from November's 11.5°C (52.7°F). Riós records an average low-temperature of 2.5°C (36.5°F) throughout the month of December.

Humidity

In December, the average relative humidity is 86%.

Rainfall

The month with the most rainfall is December, when the rain falls for 12.4 days and typically aggregates up to 72mm (2.83") of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 08:37 and sunset at 17:58. On the last day of December, sunrise is at 08:56 and sunset at 18:07 CET.

Sunshine

In December, the average sunshine is 5h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 2 during December leads to these advisories:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Updated: Jun 28, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Riós, is 9.8°C (49.6°F), while the low-temperature averages to 2.5°C (36.5°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 31°C (87.8°F).

In Riós, the average relative humidity in December is 86%.

The month with the most rainfall in Riós is December, when the rain falls for 12.4 days and typically aggregates up to 72mm (2.83") of precipitation.

In Riós, in December, during 12.4 rainfall days, 72mm (2.83") of precipitation is typically accumulated.

March through December are months without snowfall.

In Riós, Spain, in December, it doesn't snow. In January, it regularly snows.

December has the shortest days of the year, with an average of 9h and 12min of daylight.

The average day length in December is 9h and 11min.

On the first day of December, sunrise is at 08:37 and sunset at 17:58. On the last day of the month, sunrise is at 08:56 and sunset at 18:07 CET.

The average sunshine duration in December is 5h.

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

In Riós, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

11.5°C

9.8°C

8.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.8km/h

7.4km/h

7.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

13.5

17.1

15.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Riós, Spain

Average high temperature in December: 9.8°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 (8.9°C).

Average low temperature in December: 2.5°C

The months with the highest average low temperature are July and August (13.1°C).
The coldest month (with the lowest average low temperature) is February (1.5°C).

Average pressure in December
Riós, Spain

Average pressure in December: 1022.7mbar

The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

Average wind speed in December
Riós, Spain

Average wind speed in December: 6.7km/h

The windiest month (with the highest average wind speed) is March (8.3km/h).
The calmest month (with the lowest average wind speed) is September (6.4km/h).

Average humidity in December
Riós, Spain

Average humidity in December: 86%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (56%).

Average rainfall in December
Riós, Spain

Average rainfall in December: 72mm

The wettest month (with the highest rainfall) is December (72mm).
The driest months (with the least rainfall) are July and August (11mm).

Average rainfall days in December
Riós, Spain

Average rainfall days in December: 12.4 days

The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is August (3.8 days).

Average snowfall in December
Riós, Spain

Average snowfall in December: 0mm

The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Riós, Spain

Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in December: 9h and 12min

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 0min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in December
Riós, Spain

Average sunshine days in December: 17.1 days

The month with the most sunshine days is August (25.5 days).
The month with the least sunshine days is November (13.5 days).

Average UV index in December
Riós, Spain

Average UV index in December: 2

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