December weather forecast and climate
Ratoeira, Portugal

Weather in December

The first month of the winter, December, is also a frosty month in Ratoeira, Portugal, with average temperature fluctuating between 9.6°C (49.3°F) and 3.1°C (37.6°F).

Temperature

In Ratoeira, the average high-temperature is almost the same as in November - a chilly 9.6°C (49.3°F). In Ratoeira, in December, the average low-temperature is 3.1°C (37.6°F).

Humidity

In Ratoeira, the average relative humidity in December is 82%.

Rainfall

The month with the most rainfall is December when the rain falls for 9.8 days and typically aggregates up to 65mm (2.56") of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In December, it is snowing for 1.7 days. Throughout December, 32mm (1.26") of snow is accumulated. In Ratoeira, during the entire year, snow falls for 13 days, and aggregates up to 161mm (6.34") of snow.

Daylight

With an average of 9.3h of daylight, December has the shortest days of the year.

Sunshine

In Ratoeira, Portugal, the average sunshine in December is 5h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Ratoeira. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Ratoeira?

In Ratoeira, in December, the average high-temperature is 9.6°C (49.3°F), and the average low-temperature is 3.1°C (37.6°F).

What is the average humidity in December in Ratoeira?

In Ratoeira, the average relative humidity in December is 82%.

How many days does it rain in December in Ratoeira?

In December, in Ratoeira, Portugal, the rain falls for 9.8 days. Throughout December, 65mm (2.56") of precipitation is accumulated.

What is the rainiest month in Ratoeira?

December is the month with the most rainfall in Ratoeira. Rain falls for 9.8 days and accumulates 65mm (2.56") of precipitation.

How much does it snow in Ratoeira in December?

In Ratoeira, Portugal, in December, snow falls for 1.7 days, with typically accumulated 32mm (1.26") of snow.

What is the month with the shortest days in Ratoeira?

With an average of 9.3h of daylight, December has the shortest days of the year in Ratoeira, Portugal.

What is the average length of the day in December in Ratoeira?

In Ratoeira, Portugal, the average length of the day in December is 9.3h.

How many hours of sunshine does Ratoeira have in December?

In Ratoeira, Portugal, the average sunshine in December is 5h.

What is the month with the lowest UV index in Ratoeira?

Months with the lowest UV index in Ratoeira are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in December in Ratoeira?

In Ratoeira, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.

Average temperature in December
Ratoeira, Portugal

Average temperature in December - Ratoeira, Portugal
  • Average high temperature in December: 9.6°C

The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (8.7°C).

  • Average low temperature in December: 3.1°C

The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).

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Average pressure in December
Ratoeira, Portugal

Average pressure in December - Ratoeira, Portugal
  • Average pressure in December: 1023.1mbar

The month with the highest atmospheric pressure is December (1023.1mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).

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Average wind speed in December
Ratoeira, Portugal

Average wind speed in December - Ratoeira, Portugal
  • Average wind speed in December: 11.3km/h

The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is September (9.1km/h).

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Average humidity in December
Ratoeira, Portugal

Average humidity in December - Ratoeira, Portugal
  • Average humidity in December: 82%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in December
Ratoeira, Portugal

Average rainfall in December - Ratoeira, Portugal
  • Average rainfall in December: 65mm

The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is August (6mm).

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Average rainfall days in December
Ratoeira, Portugal

Average rainfall days in December - Ratoeira, Portugal
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is April (16.2 days).
The month with the least rainy days is August (2.7 days).

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Average snowfall in December
Ratoeira, Portugal

Average snowfall in December - Ratoeira, Portugal
  • Average snowfall in December: 32mm

Months with the highest snowfall are January and February (44mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in December
Ratoeira, Portugal

Average snowfall days in December - Ratoeira, Portugal
  • Average snowfall days in December: 1.7 days

The month with the highest number of snowfall days is January (3.9 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Ratoeira, Portugal

Average daylight in December / Average sunshine in December - Ratoeira, Portugal
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 5h

Months with the most sunshine are July and August (Average sunshine: 11.6h).
The month with the least sunshine is January (Average sunshine: 4.3h).

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Average sunshine days in December
Ratoeira, Portugal

Average sunshine days in December - Ratoeira, Portugal
  • Average sunshine days in December: 19.7 days

The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is April (12.5 days).

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Average UV index in December
Ratoeira, Portugal

Average UV index in December - Ratoeira, Portugal
  • Average UV index in December: 2

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

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Average cloud cover in December
Ratoeira, Portugal

Average cloud cover in December - Ratoeira, Portugal
  • Average cloud cover in December: 47

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).

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Average visibility in December
Ratoeira, Portugal

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

Months with the highest visibility are July, August and September (10km).
Months with the lowest visibility are January, February, April, November and December (8km).

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