December weather forecast and climate
Portunhos, Portugal

Weather in December

December, the first month of the winter, in Portunhos, is also a moderate month, with average temperature fluctuating between 7.8°C (46°F) and 14.5°C (58.1°F).

Temperature

In December, the average high-temperature is essentially the same as in November - a mild 14.5°C (58.1°F). In December, in Portunhos, the average low-temperature is 7.8°C (46°F).

Humidity

In December, the average relative humidity is 79%.

Rainfall

In Portunhos, Portugal, in December, it is raining for 12.5 days, with typically 86mm (3.39") of accumulated precipitation. In Portunhos, Portugal, during the entire year, the rain falls for 133.4 days and collects up to 644mm (25.35") of precipitation.

Daylight

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

Sunshine

The average sunshine in Portunhos, Portugal, is 5.7h.

UV index

Months with the lowest UV index in Portunhos are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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.
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FAQ

What is the temperature in December in Portunhos?

In December, the average high-temperature is 14.5°C (58.1°F), and the average low-temperature is 7.8°C (46°F).

What is the average humidity in December in Portunhos?

In December, the average relative humidity in Portunhos is 79%.

How many days does it rain in December in Portunhos?

In Portunhos, Portugal, in December, it is raining for 12.5 days, with typically 86mm (3.39") of accumulated precipitation.

What is the month with the shortest days in Portunhos?

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

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

In December, the average length of the day in Portunhos is 9.4h.

How long on average sun shines in December in Portunhos?

In Portunhos, the average sunshine in December is 5.7h.

What are the months with the lowest UV index in Portunhos?

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

What is the UV index reading in December in Portunhos?

The average daily maximum UV index in December in Portunhos, Portugal, is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in December
Portunhos, Portugal

Average temperature in December - Portunhos, Portugal
  • Average high temperature in December: 14.5°C

The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (13.3°C).

  • Average low temperature in December: 7.8°C

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

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Average pressure in December
Portunhos, Portugal

Average pressure in December - Portunhos, 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 (1015.3mbar).

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Average wind speed in December
Portunhos, Portugal

Average wind speed in December - Portunhos, Portugal
  • Average wind speed in December: 10.3km/h

The windiest month (with the highest average wind speed) is February (10.9km/h).
The calmest month (with the lowest average wind speed) is September (8.7km/h).

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Average humidity in December
Portunhos, Portugal

Average humidity in December - Portunhos, Portugal
  • Average humidity in December: 79%

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

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Average rainfall in December
Portunhos, Portugal

Average rainfall in December - Portunhos, Portugal
  • Average rainfall in December: 86mm

The wettest month (with the highest rainfall) is November (99mm).
The driest month (with the least rainfall) is July (7mm).

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Average rainfall days in December
Portunhos, Portugal

Average rainfall days in December - Portunhos, Portugal
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is November (16 days).
The month with the least rainy days is August (3.9 days).

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

Average daylight in December / Average sunshine in December - Portunhos, 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: 5.7h

The month with the most sunshine is July (Average sunshine: 11.2h).
The month with the least sunshine is January (Average sunshine: 5.2h).

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Average sunshine days in December
Portunhos, Portugal

Average sunshine days in December - Portunhos, Portugal
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is November (11.3 days).

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Average UV index in December
Portunhos, Portugal

Average UV index in December - Portunhos, Portugal
  • Average UV index in December: 3

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 3).

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Average cloud cover in December
Portunhos, Portugal

Average cloud cover in December - Portunhos, Portugal
  • Average cloud cover in December: 38

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 21).

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Average visibility in December
Portunhos, Portugal

Average visibility in December - Portunhos, 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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