December weather forecast
Carvalhos, Portugal

December

Weather in December

The first month of the winter, December, is also a moderate month in Carvalhos, Portugal, with an average temperature fluctuating between 13.6°C (56.5°F) and 7.9°C (46.2°F).

Temperature

As Carvalhos transitions from November to December, the average high-temperatures adjust to a still moderate 13.6°C (56.5°F), nearly the same as the previous 15.3°C (59.5°F). In Carvalhos, an average nighttime temperature of 7.9°C (46.2°F) is expected during December.

Humidity

In Carvalhos, the average relative humidity in December is 80%.

Rainfall

In Carvalhos, in December, during 12.9 rainfall days, 116mm (4.57") of precipitation is typically accumulated. In Carvalhos, Portugal, during the entire year, the rain falls for 125.7 days and collects up to 773mm (30.43") of precipitation.

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 07:41 and sunset at 17:05. On the last day of December, sunrise is at 08:00 and sunset at 17:14 WET.

Sunshine

The average sunshine in December is 5.5h.

UV index

January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 3 in December translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Frequently asked questions

What is the average December temperature?
In December, in Carvalhos, the average high-temperature is 13.6°C (56.5°F), and the average low-temperature is 7.9°C (46.2°F).
What is the average humidity in December?
In Carvalhos, the average relative humidity in December is 80%.
How much does it rain in December?
In Carvalhos, in December, it is raining for 12.9 days, with typically 116mm (4.57") of accumulated precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
How many hours of daylight does Carvalhos have in December?
In Carvalhos, the average day length in December is 9h and 14min.
When are sunrise and sunset in December?
On the first day of December, sunrise is at 07:41 and sunset at 17:05. On the last day of the month, sunrise is at 08:00 and sunset at 17:14 WET.
How long on average sun shines in December?
In December, the average sunshine duration is 5.5h.
What are the months with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3.
What is the UV index intensity in December?
The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium hazard to health 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Carvalhos, Portugal
  • Average high temperature in December: 13.6°C

The warmest month (with the highest average high temperature) is August (26.6°C).
The month with the lowest average high temperature is January (12.7°C).

  • Average low temperature in December: 7.9°C

The months with the highest average low temperature are July and August (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (6.8°C).

Average pressure in December
Carvalhos, Portugal
  • 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 (1015.3mbar).

Average wind speed in December
Carvalhos, Portugal
  • Average wind speed in December: 9.7km/h

The windiest month (with the highest average wind speed) is February (10.3km/h).
The calmest month (with the lowest average wind speed) is September (7.8km/h).

Average humidity in December
Carvalhos, Portugal
  • Average humidity in December: 80%

The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (66%).

Average rainfall in December
Carvalhos, Portugal
  • Average rainfall in December: 116mm

The wettest month (with the highest rainfall) is November (124mm).
The driest month (with the least rainfall) is July (10mm).

Average rainfall days in December
Carvalhos, Portugal
  • Average rainfall days in December: 12.9 days

The month with the highest number of rainy days is November (15.6 days).
The month with the least rainy days is August (5 days).

Average daylight in December /
Average sunshine in December
Carvalhos, 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 3min

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 54min).

Average sunshine days in December
Carvalhos, Portugal
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is November (12.5 days).

Average UV index in December
Carvalhos, Portugal
  • Average UV index in December: 3

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

Average cloud cover in December
Carvalhos, Portugal
  • Average cloud cover in December: 42

The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in December
Carvalhos, Portugal
  • Average visibility in December: 9km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).

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