December weather forecast and climate
Usseira, Portugal

Weather in December

The first month of the winter, December, is still a mild month in Usseira, Portugal, with average temperature varying between 9.8°C (49.6°F) and 14.9°C (58.8°F).

Temperature

In Usseira, the average high-temperature is essentially the same as in November - a mild 14.9°C (58.8°F). The average low-temperature, in December, is 9.8°C (49.6°F).

Humidity

The average relative humidity is 77%.

Rainfall

In December, the rain falls for 9.2 days. Throughout December, 19mm (0.75") of precipitation is accumulated. Throughout the year, there are 101.9 rainfall days, and 170mm (6.69") of precipitation is accumulated.

Daylight

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

Sunshine

The average sunshine in December is 5.7h.

UV index

In December, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in December in Usseira?

The average high-temperature, in December, in Usseira, Portugal, is 14.9°C (58.8°F), while the average low-temperature is 9.8°C (49.6°F).

What is the average humidity in December in Usseira?

In Usseira, the average relative humidity in December is 77%.

How much does it rain in Usseira in December?

In Usseira, Portugal, during December, the rain falls for 9.2 days and regularly aggregates up to 19mm (0.75") of precipitation.

What is the month with the shortest days in Usseira?

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

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

The average length of the day in December in Usseira, Portugal, is 9.4h.

How long on average sun shines in December in Usseira?

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

How high is the UV index in December in Usseira?

The average daily maximum UV index in December in Usseira is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in December
Usseira, Portugal

Average temperature in December - Usseira, Portugal
  • Average high temperature in December: 14.9°C

The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).

  • Average low temperature in December: 9.8°C

The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).

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Average pressure in December
Usseira, Portugal

Average pressure in December - Usseira, Portugal
  • Average pressure in December: 1022.5mbar

The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).

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Average wind speed in December
Usseira, Portugal

Average wind speed in December - Usseira, Portugal
  • Average wind speed in December: 15.9km/h

The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.6km/h).

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Average humidity in December
Usseira, Portugal

Average humidity in December - Usseira, Portugal
  • Average humidity in December: 77%

The month with the highest relative humidity is January (79%).
Months with the lowest relative humidity are September and October (72%).

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Average rainfall in December
Usseira, Portugal

Average rainfall in December - Usseira, Portugal
  • Average rainfall in December: 19mm

The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).

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Average rainfall days in December
Usseira, Portugal

Average rainfall days in December - Usseira, Portugal
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).

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

Average daylight in December / Average sunshine in December - Usseira, Portugal
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 5.7h

Months with the most sunshine are July and August (Average sunshine: 10.8h).
The month with the least sunshine is January (Average sunshine: 5.1h).

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Average sunshine days in December
Usseira, Portugal

Average sunshine days in December - Usseira, Portugal
  • Average sunshine days in December: 18.6 days

The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).

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Average UV index in December
Usseira, Portugal

Average UV index in December - Usseira, Portugal
  • Average UV index in December: 4

Months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in December
Usseira, Portugal

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

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

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Average visibility in December
Usseira, Portugal

Average visibility in December - Usseira, Portugal
  • Average visibility in December: 10km

Months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
Months with the lowest visibility are July and August (9km).

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