December weather forecast and climate
Monte das Casas Velhas, Portugal

Weather in December

The first month of the winter, December, is also a moderate month in Monte das Casas Velhas, Portugal, with average temperature fluctuating between 7.4°C (45.3°F) and 15°C (59°F).

Temperature

In December, the average high-temperature is relatively the same as in November - a mild 15°C (59°F). In Monte das Casas Velhas, in December, the average low-temperature is 7.4°C (45.3°F).

Humidity

In December, the average relative humidity in Monte das Casas Velhas is 79%.

Rainfall

In Monte das Casas Velhas, in December, it is raining for 10.5 days, with typically 46mm (1.81") of accumulated precipitation. Throughout the year, in Monte das Casas Velhas, there are 107.1 rainfall days, and 346mm (13.62") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Monte das Casas Velhas, with an average of 9.5h of daylight.

Sunshine

The average sunshine in Monte das Casas Velhas is 5.8h.

UV index

January, February, 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 the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
[Resources]

FAQ

What is the temperature in December in Monte das Casas Velhas?

The average high-temperature, in December, is 15°C (59°F), while the average low-temperature is 7.4°C (45.3°F).

What is the average humidity in December in Monte das Casas Velhas?

In December, the average relative humidity in Monte das Casas Velhas, Portugal, is 79%.

How many days does it rain in December in Monte das Casas Velhas?

In Monte das Casas Velhas, during December, the rain falls for 10.5 days and regularly aggregates up to 46mm (1.81") of precipitation.

What is the month with the shortest days in Monte das Casas Velhas?

December has the shortest days of the year in Monte das Casas Velhas, Portugal, with an average of 9.5h of daylight.

How many hours of daylight does Monte das Casas Velhas have in December?

In December, the average length of the day in Monte das Casas Velhas, Portugal, is 9.5h.

How long on average sun shines in December in Monte das Casas Velhas?

In Monte das Casas Velhas, Portugal, the average sunshine in December is 5.8h.

What are the months with the lowest UV index in Monte das Casas Velhas?

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.

How high is the UV index in December in Monte das Casas Velhas?

The average daily maximum UV index in December in Monte das Casas Velhas, Portugal, is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in December
Monte das Casas Velhas, Portugal

Average temperature in December - Monte das Casas Velhas, Portugal
  • Average high temperature in December: 15°C

The warmest month (with the highest average high temperature) is August (33.7°C).
The month with the lowest average high temperature is January (14°C).

  • Average low temperature in December: 7.4°C

Months with the highest average low temperature are July and August (16.1°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).

[Resources]

Average pressure in December
Monte das Casas Velhas, Portugal

Average pressure in December - Monte das Casas Velhas, 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 (1015.4mbar).

[Resources]

Average wind speed in December
Monte das Casas Velhas, Portugal

Average wind speed in December - Monte das Casas Velhas, Portugal
  • Average wind speed in December: 10.6km/h

The windiest month (with the highest average wind speed) is March (11.5km/h).
The calmest month (with the lowest average wind speed) is September (9.3km/h).

[Resources]

Average humidity in December
Monte das Casas Velhas, Portugal

Average humidity in December - Monte das Casas Velhas, Portugal
  • Average humidity in December: 79%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (54%).

[Resources]

Average rainfall in December
Monte das Casas Velhas, Portugal

Average rainfall in December - Monte das Casas Velhas, Portugal
  • Average rainfall in December: 46mm

The wettest month (with the highest rainfall) is April (53mm).
The driest months (with the least rainfall) are July and August (1mm).

[Resources]

Average rainfall days in December
Monte das Casas Velhas, Portugal

Average rainfall days in December - Monte das Casas Velhas, Portugal
  • Average rainfall days in December: 10.5 days

Months with the highest number of rainy days are March and April (14.9 days).
The month with the least rainy days is August (1.3 days).

[Resources]

Average daylight in December /
Average sunshine in December
Monte das Casas Velhas, Portugal

Average daylight in December / Average sunshine in December - Monte das Casas Velhas, Portugal
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 5.8h

The month with the most sunshine is July (Average sunshine: 11.5h).
The month with the least sunshine is January (Average sunshine: 5.3h).

[Resources]

Average sunshine days in December
Monte das Casas Velhas, Portugal

Average sunshine days in December - Monte das Casas Velhas, Portugal
  • Average sunshine days in December: 19 days

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is April (13.4 days).

[Resources]

Average UV index in December
Monte das Casas Velhas, Portugal

Average UV index in December - Monte das Casas Velhas, Portugal
  • Average UV index in December: 3

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

[Resources]

Average cloud cover in December
Monte das Casas Velhas, Portugal

Average cloud cover in December - Monte das Casas Velhas, Portugal
  • Average cloud cover in December: 36

The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 12).

[Resources]

Average visibility in December
Monte das Casas Velhas, Portugal

Average visibility in December - Monte das Casas Velhas, Portugal
  • Average visibility in December: 9km

The month with the highest visibility is June (10km).
Months with the lowest visibility are January and April (8km).

[Resources]