December weather forecast and climate
Rebelva, Portugal

Weather in December

The first month of the winter, December, is still a mild month in Rebelva, Portugal, with temperature in the range of an average high of 15.7°C (60.3°F) and an average low of 12°C (53.6°F).

Temperature

In Rebelva, Portugal, the average high-temperature is practically the same as in November - a moderate 15.7°C (60.3°F). In Rebelva, Portugal, in December, the average low-temperature is 12°C (53.6°F).

Humidity

January, April, July and December, with an average relative humidity of 75%, are most humid months.

Rainfall

In Rebelva, it is raining for 8.3 days, with typically 29mm (1.14") of accumulated precipitation. Throughout the year, in Rebelva, there are 85.8 rainfall days, and 215mm (8.46") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 9.5h of daylight.

Sunshine

In December, the average sunshine in Rebelva is 6h.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. 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.
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FAQ

What is the temperature in December in Rebelva?

In December, in Rebelva, the average high-temperature is 15.7°C (60.3°F), and the average low-temperature is 12°C (53.6°F).

What are the most humid months in Rebelva?

January, April, July and December, with an average relative humidity of 75%, are most humid months in Rebelva.

What is the average humidity in December in Rebelva?

The average relative humidity in December in Rebelva, Portugal, is 75%.

How many days does it rain in December in Rebelva?

In Rebelva, during December, the rain falls for 8.3 days and regularly aggregates up to 29mm (1.14") of precipitation.

What is the month with the shortest days in Rebelva?

The month with the shortest days in Rebelva is December, with an average of 9.5h of daylight.

How many hours of daylight does Rebelva have in December?

The average length of the day in December is 9.5h.

How long on average sun shines in December in Rebelva?

In December, the average sunshine in Rebelva is 6h.

When is the lowest UV index in Rebelva?

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Rebelva, Portugal.

How high is the UV index in December in Rebelva?

The average daily maximum UV index in December in Rebelva, Portugal, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in December
Rebelva, Portugal

Average temperature in December - Rebelva, Portugal
  • Average high temperature in December: 15.7°C

The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in December: 12°C

The month with the highest average low temperature is August (18.6°C).
The coldest month (with the lowest average low temperature) is February (10.8°C).

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Average pressure in December
Rebelva, Portugal

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

Months with the highest atmospheric pressure are January and December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).

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Average wind speed in December
Rebelva, Portugal

Average wind speed in December - Rebelva, Portugal
  • Average wind speed in December: 17.9km/h

The windiest month (with the highest average wind speed) is February (19.5km/h).
The calmest month (with the lowest average wind speed) is October (15.6km/h).

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Average humidity in December
Rebelva, Portugal

Average humidity in December - Rebelva, Portugal
  • Average humidity in December: 75%

Months with the highest relative humidity are January, April, July and December (75%).
Months with the lowest relative humidity are May and October (72%).

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Average rainfall in December
Rebelva, Portugal

Average rainfall in December - Rebelva, Portugal
  • Average rainfall in December: 29mm

The wettest month (with the highest rainfall) is November (44mm).
The driest month (with the least rainfall) is July (2mm).

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Average rainfall days in December
Rebelva, Portugal

Average rainfall days in December - Rebelva, Portugal
  • Average rainfall days in December: 8.3 days

The month with the highest number of rainy days is November (12.4 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
Rebelva, Portugal

Average daylight in December / Average sunshine in December - Rebelva, Portugal
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 6h

The month with the most sunshine is July (Average sunshine: 11.4h).
The month with the least sunshine is January (Average sunshine: 5.5h).

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Average sunshine days in December
Rebelva, Portugal

Average sunshine days in December - Rebelva, Portugal
  • Average sunshine days in December: 20.6 days

The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (15.6 days).

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Average UV index in December
Rebelva, Portugal

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

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in December
Rebelva, Portugal

Average cloud cover in December - Rebelva, Portugal
  • Average cloud cover in December: 34

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in December
Rebelva, Portugal

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

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

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