December weather forecast
Mesão Frio, Portugal

December

Weather in December

December, the first month of the winter in Mesão Frio, is still a cool month, with temperature in the range of an average low of 3.2°C (37.8°F) and an average high of 10.1°C (50.2°F).

Temperature

Mesão Frio's December average high-temperature settles at a still cool 10.1°C (50.2°F), showing a near match with the preceding month. In Mesão Frio, an average temperature of 3.2°C (37.8°F) is noted during December nights.

Humidity

In December, the average relative humidity is 85%.

Rainfall

December is the month with the most rainfall. Rain falls for 9.3 days and accumulates 49mm (1.93") of precipitation.

Snowfall

January through March, November and December are months with snowfall. In December, it is snowing for 0.5 days. Throughout December, 3mm (0.12") of snow is accumulated. In Mesão Frio, during the entire year, snow falls for 1.8 days and aggregates up to 14mm (0.55") of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 07:37 and sunset at 17:03. On the last day of December, sunrise is at 07:56 and sunset at 17:12 WET.

Sunshine

In December, the average sunshine in Mesão Frio is 4.9h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Frequently asked questions

What are the temperatures in December?
The high-temperature, in December, in Mesão Frio, is 10.1°C (50.2°F), while the low-temperature averages to 3.2°C (37.8°F). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 30°C (86°F).
What is the average humidity in December?
In December, the average relative humidity in Mesão Frio is 85%.
What is the wettest month?
December is the month with the most rainfall. Rain falls for 9.3 days and accumulates 49mm (1.93") of precipitation.
How many days does it rain in December?
In December, the rain falls for 9.3 days. Throughout December, 49mm (1.93") of precipitation is accumulated.
How much does it snow in December?
In December, it is snowing for 0.5 days. Throughout December, 3mm (0.12") of snow is accumulated.
What is the month with the shortest days?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
How many hours of daylight does Mesão Frio have in December?
In December, the average day length in Mesão Frio is 9h and 16min.
What time are sunrise and sunset in December?
On the first day of December, sunrise is at 07:37 and sunset at 17:03. On the last day of the month, sunrise is at 07:56 and sunset at 17:12 WET.
How long on average sun shines in December?
In Mesão Frio, the average sunshine duration in December is 4.9h.
When is the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
How high is the UV index in December?
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
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
Mesão Frio, Portugal
  • Average high temperature in December: 10.1°C

The warmest month (with the highest average high temperature) is July (28.8°C).
The month with the lowest average high temperature is January (9.4°C).

  • Average low temperature in December: 3.2°C

The month with the highest average low temperature is July (14.1°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).

Average pressure in December
Mesão Frio, Portugal
  • Average pressure in December: 1022.8mbar

The month with the highest atmospheric pressure is December (1022.8mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

Average wind speed in December
Mesão Frio, Portugal
  • Average wind speed in December: 7.3km/h

The windiest month (with the highest average wind speed) is March (8.6km/h).
The calmest month (with the lowest average wind speed) is September (6.4km/h).

Average humidity in December
Mesão Frio, Portugal
  • Average humidity in December: 85%

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

Average rainfall in December
Mesão Frio, Portugal
  • Average rainfall in December: 49mm

The wettest month (with the highest rainfall) is December (49mm).
The driest month (with the least rainfall) is July (8mm).

Average rainfall days in December
Mesão Frio, Portugal
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is April (13.6 days).
The month with the least rainy days is August (3.9 days).

Average snowfall in December
Mesão Frio, Portugal
  • Average snowfall in December: 3mm

The month with the highest snowfall is February (7mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December
Mesão Frio, Portugal
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (0.8 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
Mesão Frio, Portugal
  • Average daylight in December: 9h and 2min

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

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December
Mesão Frio, Portugal
  • Average sunshine days in December: 19.9 days

The month with the most sunshine days is August (25.5 days).
The month with the least sunshine days is April (14.1 days).

Average UV index in December
Mesão Frio, Portugal
  • Average UV index in December: 2

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

Average cloud cover in December
Mesão Frio, Portugal
  • Average cloud cover in December: 51

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in December
Mesão Frio, Portugal
  • Average visibility in December: 7km

The months with the highest visibility are June, July, August and September (9km).
The month with the lowest visibility is January (6km).

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