December weather forecast and climate
Vale das Velhas, Portugal

Weather in December

The first month of the winter, December, is still a mild month in Vale das Velhas, Portugal, with average temperature ranging between max 14.4°C (57.9°F) and min 7.6°C (45.7°F).

Temperature

In Vale das Velhas, the average high-temperature is relatively the same as in November - a mild 14.4°C (57.9°F). In Vale das Velhas, the average low-temperature is 7.6°C (45.7°F).

Humidity

In Vale das Velhas, the average relative humidity is 79%.

Rainfall

In Vale das Velhas, Portugal, in December, it is raining for 6.6 days, with typically 17mm (0.67") of accumulated precipitation. Throughout the year, in Vale das Velhas, there are 79 rainfall days, and 141mm (5.55") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 9.4h of daylight.

Sunshine

In December, the average sunshine in Vale das Velhas is 5.6h.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Vale das Velhas. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in December in Vale das Velhas?

In December, the average high-temperature is 14.4°C (57.9°F), and the average low-temperature is 7.6°C (45.7°F).

What is the average humidity in December in Vale das Velhas?

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

How many days does it rain in December in Vale das Velhas?

In Vale das Velhas, Portugal, in December, during 6.6 rainfall days, 17mm (0.67") of precipitation is typically accumulated.

What is the month with the shortest days in Vale das Velhas?

With an average of 9.4h of daylight, December has the shortest days of the year.

What is the average length of the day in December in Vale das Velhas?

In December, the average length of the day in Vale das Velhas, Portugal, is 9.4h.

How long on average sun shines in December in Vale das Velhas?

In December, the average sunshine in Vale das Velhas is 5.6h.

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

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Vale das Velhas.

How high is the UV index in December in Vale das Velhas?

In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in December
Vale das Velhas, Portugal

Average temperature in December - Vale das Velhas, Portugal
  • Average high temperature in December: 14.4°C

The warmest month (with the highest average high temperature) is August (27.7°C).
The month with the lowest average high temperature is January (13.4°C).

  • Average low temperature in December: 7.6°C

The month with the highest average low temperature is July (15°C).
The coldest months (with the lowest average low temperature) are January and February (6.7°C).

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Average pressure in December
Vale das Velhas, Portugal

Average pressure in December - Vale das Velhas, Portugal
  • Average pressure in December: 1022.6mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

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Average wind speed in December
Vale das Velhas, Portugal

Average wind speed in December - Vale das Velhas, Portugal
  • Average wind speed in December: 10.8km/h

The windiest month (with the highest average wind speed) is February (11.9km/h).
The calmest month (with the lowest average wind speed) is September (9.2km/h).

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Average humidity in December
Vale das Velhas, Portugal

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

The month with the highest relative humidity is January (82%).
Months with the lowest relative humidity are August and September (68%).

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Average rainfall in December
Vale das Velhas, Portugal

Average rainfall in December - Vale das Velhas, Portugal
  • Average rainfall in December: 17mm

The wettest month (with the highest rainfall) is November (27mm).
The driest month (with the least rainfall) is July (2mm).

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Average rainfall days in December
Vale das Velhas, Portugal

Average rainfall days in December - Vale das Velhas, Portugal
  • Average rainfall days in December: 6.6 days

The month with the highest number of rainy days is April (11.3 days).
The month with the least rainy days is August (1.9 days).

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Average daylight in December /
Average sunshine in December
Vale das Velhas, Portugal

Average daylight in December / Average sunshine in December - Vale das Velhas, Portugal
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 5.6h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is January (Average sunshine: 5.1h).

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Average sunshine days in December
Vale das Velhas, Portugal

Average sunshine days in December - Vale das Velhas, Portugal
  • Average sunshine days in December: 22.4 days

The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is April (16.2 days).

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Average UV index in December
Vale das Velhas, Portugal

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

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

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Average cloud cover in December
Vale das Velhas, Portugal

Average cloud cover in December - Vale das Velhas, Portugal
  • Average cloud cover in December: 39

The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in December
Vale das Velhas, Portugal

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

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

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