December weather forecast
Lago, Portugal

December

Weather in December

The first month of the winter, December, is still a cool month in Lago, Portugal, with temperature in the range of an average low of 6.2°C (43.2°F) and an average high of 12.4°C (54.3°F).

Temperature

The shift from November to December is characterized by an average high-temperature of a fresh 12.4°C (54.3°F), not significantly different from the 14.2°C (57.6°F) of November. Throughout December, Lago's nights cool down to an average of 6.2°C (43.2°F).

Humidity

The average relative humidity in December is 84%.

Rainfall

In Lago, in December, during 13.8 rainfall days, 142mm (5.59") of precipitation is typically accumulated. In Lago, during the entire year, the rain falls for 150.5 days and collects up to 1002mm (39.45") of precipitation.

Daylight

December has the shortest days of the year, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 07:41 and sunset at 17:04. On the last day of the month, sunrise is at 08:00 and sunset at 17:13 WET.

Sunshine

In Lago, the average sunshine in December is 5.3h.

UV index

January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 3 in December transforms into this advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

What is the temperature in December?
The high-temperature during December is 12.4°C (54.3°F) and the low-temperature is 6.2°C (43.2°F). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 29°C (84.2°F).
What is the average humidity in December?
In December, the average relative humidity is 84%.
How many days does it rain in December?
In December, the rain falls for 13.8 days. Throughout December, 142mm (5.59") of precipitation is accumulated.
What is the month with the shortest days?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
What is the average length of the day in December?
In Lago, the average day length in December is 9h and 13min.
When is the sunrise / sunset in December?
On the first day of December, sunrise is at 07:41 and sunset at 17:04. On the last day of the month, sunrise is at 08:00 and sunset at 17:13 WET.
How long on average sun shines in December?
In Lago, the average sunshine duration in December is 5.3h.
What is the month with the lowest UV index?
January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
What is the UV index reading in December?
In Lago, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Lago, Portugal
Average temperature in December
Lago, Portugal
  • Average high temperature in December: 12.4°C

The warmest month (with the highest average high temperature) is August (27.6°C).
The month with the lowest average high temperature is January (11.8°C).

  • Average low temperature in December: 6.2°C

The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (4.7°C).

Average pressure in December - Lago, Portugal
Average pressure in December
Lago, Portugal
  • Average pressure in December: 1022.4mbar

The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

Average wind speed in December - Lago, Portugal
Average wind speed in December
Lago, Portugal
  • Average wind speed in December: 7.8km/h

The windiest months (with the highest average wind speed) are February and March (8.2km/h).
The calmest month (with the lowest average wind speed) is September (6.5km/h).

Average humidity in December - Lago, Portugal
Average humidity in December
Lago, Portugal
  • Average humidity in December: 84%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (65%).

Average rainfall in December - Lago, Portugal
Average rainfall in December
Lago, Portugal
  • Average rainfall in December: 142mm

The wettest month (with the highest rainfall) is November (146mm).
The driest month (with the least rainfall) is July (12mm).

Average rainfall days in December - Lago, Portugal
Average rainfall days in December
Lago, Portugal
  • Average rainfall days in December: 13.8 days

The month with the highest number of rainy days is January (17.3 days).
The month with the least rainy days is August (5.4 days).

Average daylight in December / Average sunshine in December - Lago, Portugal
Average daylight in December /
Average sunshine in December
Lago, Portugal
  • Average daylight in December: 9h and 1min

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 12min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in December - Lago, Portugal
Average sunshine days in December
Lago, Portugal
  • Average sunshine days in December: 15.4 days

The month with the most sunshine days is August (23.8 days).
The month with the least sunshine days is April (10.5 days).

Average UV index in December - Lago, Portugal
Average UV index in December
Lago, Portugal
  • Average UV index in December: 3

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).

Average cloud cover in December - Lago, Portugal
Average cloud cover in December
Lago, Portugal
  • Average cloud cover in December: 46

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in December - Lago, Portugal
Average visibility in December
Lago, Portugal
  • Average visibility in December: 8km

The month with the highest visibility is September (9km).
The month with the lowest visibility is January (7km).

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