December weather forecast
Tentúgal, Portugal

December

Weather in December

The first month of the winter, December, is also a moderate month in Tentúgal, Portugal, with an average temperature varying between 14°C (57.2°F) and 6.5°C (43.7°F).

Temperature

The arrival of December is marked by an average high-temperature of a still moderate 14°C (57.2°F), bearing a close resemblance to November. An average minimum temperature of 6.5°C (43.7°F) is recorded in Tentúgal during the month of December.

Humidity

In December, the average relative humidity is 80%.

Rainfall

In Tentúgal, in December, during 11 rainfall days, 70mm (2.76") of precipitation is typically accumulated. Throughout the year, there are 119.4 rainfall days, and 525mm (20.67") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 07:38 and sunset at 17:09. On the last day of December, sunrise is at 07:56 and sunset at 17:18 WET.

Sunshine

In December, the average sunshine is 5.7h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 3 during December morphs into the following directions:
Take necessary precautions - Suggestions to elude sunburn are provided. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

What are the temperatures in December?
In December, in Tentúgal, the average high-temperature is 14°C (57.2°F), and the average low-temperature is 6.5°C (43.7°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in September is calculated to be 28°C (82.4°F).
What is the average humidity in December?
In December, the average relative humidity in Tentúgal is 80%.
How many days does it rain in December?
In Tentúgal, in December, it is raining for 11 days, with typically 70mm (2.76") of accumulated precipitation.
What is the month with the shortest days in Tentúgal?
December has the shortest days of the year, with an average of 9h and 24min of daylight.
What is the average length of the day in December?
In December, the average day length is 9h and 22min.
What time are sunrise and sunset in December?
On the first day of December, sunrise is at 07:38 and sunset at 17:09. On the last day of the month, sunrise is at 07:56 and sunset at 17:18 WET.
How long on average sun shines in December?
In Tentúgal, the average sunshine duration in December is 5.7h.
What is the month with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3.
What is the UV index reading in December?
In Tentúgal, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Tentúgal, Portugal
  • Average high temperature in December: 14°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 (12.9°C).

  • Average low temperature in December: 6.5°C

The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (5.4°C).

Average pressure in December
Tentúgal, Portugal
  • Average pressure in December: 1022.7mbar

The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

Average wind speed in December
Tentúgal, Portugal
  • Average wind speed in December: 8.4km/h

The windiest month (with the highest average wind speed) is March (9km/h).
The calmest month (with the lowest average wind speed) is September (7.2km/h).

Average humidity in December
Tentúgal, Portugal
  • Average humidity in December: 80%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are August and September (65%).

Average rainfall in December
Tentúgal, Portugal
  • Average rainfall in December: 70mm

The wettest month (with the highest rainfall) is November (77mm).
The driest month (with the least rainfall) is July (4mm).

Average rainfall days in December
Tentúgal, Portugal
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is April (14.7 days).
The month with the least rainy days is August (2.8 days).

Average daylight in December /
Average sunshine in December
Tentúgal, Portugal
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

Average sunshine days in December
Tentúgal, Portugal
  • Average sunshine days in December: 18.9 days

The month with the most sunshine days is August (27.5 days).
The months with the least sunshine days are April and November (14.3 days).

Average UV index in December
Tentúgal, Portugal
  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 3).

Average cloud cover in December
Tentúgal, Portugal
  • Average cloud cover in December: 41

The month with the most cloud cover is January (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 22).

Average visibility in December
Tentúgal, Portugal
  • Average visibility in December: 9km

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

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