December weather forecast
Castelo de Paiva, Portugal

December

Weather in December

December, the first month of the winter in Castelo de Paiva, is also a fresh month, with an average temperature fluctuating between 4.8°C (40.6°F) and 11.2°C (52.2°F).

Temperature

Stepping into December, Castelo de Paiva records an average high-temperature of a fresh 11.2°C (52.2°F), almost consistent with November. The month of December records an average low-temperature of 4.8°C (40.6°F).

Humidity

In Castelo de Paiva, the average relative humidity in December is 85%.

Rainfall

December is the month with the most rainfall. Rain falls for 14.5 days and accumulates 129mm (5.08") of precipitation.

Snowfall

In Castelo de Paiva, snow does not fall in February through December.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 07:39 and sunset at 17:05. On the last day of December, sunrise is at 07:57 and sunset at 17:14 WET.

Sunshine

In Castelo de Paiva, the average sunshine in December is 5.1h.

UV index

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 3 during December translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

What are the temperatures in December?
During December, Castelo de Paiva experiences an average high-temperature of 11.2°C (52.2°F) and a low-temperature of 4.8°C (40.6°F). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 30°C (86°F).
What is the average humidity in December?
In December, the average relative humidity is 85%.
What is the rainiest month?
The month with the most rainfall is December, when the rain falls for 14.5 days and typically aggregates up to 129mm (5.08") of precipitation.
How many days does it rain in December?
In December, the rain falls for 14.5 days. Throughout December, 129mm (5.08") of precipitation is accumulated.
When it does not snow?
In Castelo de Paiva, snow does not fall in February through December.
Does it snow in December?
In Castelo de Paiva, in December, it doesn't snow. In January, it regularly snows.
What is the month with the shortest days in Castelo de Paiva?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
What is the average length of the day in December?
The average day length in December is 9h and 17min.
When are sunrise and sunset in December?
On the first day of December, sunrise is at 07:39 and sunset at 17:05. On the last day of the month, sunrise is at 07:57 and sunset at 17:14 WET.
How many hours of sunshine does Castelo de Paiva have in December?
The average sunshine duration in December is 5.1h.
What is the UV index reading in December?
In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Castelo de Paiva, Portugal
  • Average high temperature in December: 11.2°C

The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (10.4°C).

  • Average low temperature in December: 4.8°C

The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is February (3.7°C).

Average pressure in December
Castelo de Paiva, Portugal
  • 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
Castelo de Paiva, Portugal
  • Average wind speed in December: 7.8km/h

The windiest month (with the highest average wind speed) is March (8.2km/h).
The calmest month (with the lowest average wind speed) is September (6.3km/h).

Average humidity in December
Castelo de Paiva, 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 (62%).

Average rainfall in December
Castelo de Paiva, Portugal
  • Average rainfall in December: 129mm

The wettest month (with the highest rainfall) is December (129mm).
The driest month (with the least rainfall) is July (10mm).

Average rainfall days in December
Castelo de Paiva, Portugal
  • Average rainfall days in December: 14.5 days

The month with the highest number of rainy days is April (17.1 days).
The month with the least rainy days is August (4.9 days).

Average snowfall in December
Castelo de Paiva, Portugal
  • Average snowfall in December: 0mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Castelo de Paiva, Portugal
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Castelo de Paiva, 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: 5h and 1min

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 24min).

Average sunshine days in December
Castelo de Paiva, Portugal
  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is August (24.6 days).
The months with the least sunshine days are April and November (10.8 days).

Average UV index in December
Castelo de Paiva, 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 and February (UV index 2).

Average cloud cover in December
Castelo de Paiva, Portugal
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in December
Castelo de Paiva, Portugal
  • Average visibility in December: 8km

The months with the highest visibility are August and September (9km).
The months with the lowest visibility are January and November (7km).

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