December weather forecast
Matosinhos, Portugal

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Weather in December

December marks the culmination of the year with the winter firmly setting in Matosinhos, Portugal. As the temperature falls to a yearly low of 9.5°C (49.1°F), the conditions become comparatively cooler. Though it receives substantial rainfall, December sees a slight reduction from last month, making it a bit drier. Shorter days and lower temperatures set the perfect backdrop for holiday season festivals and fairs. Towards the close of the year, December embraces the chill of winter while retaining its inherent coastal charm.

Temperature

Welcoming December, Matosinhos notes an average high-temperature of a still moderate 13.8°C (56.8°F), nearly consistent with November's 15.4°C (59.7°F). In Matosinhos, a slight decrease from the daytime peak is noted during the month of December, with an average low-temperature of 9.5°C (49.1°F).

Humidity

The average relative humidity in December in Matosinhos is 79%.

Rainfall

In Matosinhos, Portugal, in December, it is raining for 13.7 days, with typically 93mm (3.66") of accumulated precipitation. In Matosinhos, during the entire year, the rain falls for 137.1 days and collects up to 682mm (26.85") of precipitation.

Sea temperature

In Matosinhos, in December, the average water temperature is 15.6°C (60.1°F).
Note: The majority of individuals find it unpleasurable to swim in 15.6°C (60.1°F). It becomes progressively harder to manage one's breathing as the water temperature falls below 21°C (69.8°F).

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 07:41 and sunset at 17:06. On the last day of December, in Matosinhos, sunrise is at 08:00 and sunset at 17:15 WET.

Sunshine

In December, the average sunshine is 5.5h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 3 in December translates into these instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. To protect against the Sun's most potent rays, avoid direct exposure around midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

What are the temperatures in Matosinhos in December?

In December, the average high-temperature and low-temperature are 13.8°C (56.8°F) and 9.5°C (49.1°F) respectively.

What is the average humidity in December in Matosinhos?

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

How many days does it rain in December in Matosinhos?

In December, in Matosinhos, the rain falls for 13.7 days. Throughout December, 93mm (3.66") of precipitation is accumulated.

What is the sea water temperature in December in Matosinhos?

In Matosinhos, the average seawater temperature in December is 15.6°C (60.1°F). For swimming, a surface water temperature of 15.6°C (60.1°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the month with the shortest days in Matosinhos?

December has the shortest days of the year in Matosinhos, with an average of 9h and 18min of daylight.

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

In Matosinhos, the average day length in December is 9h and 16min.

When are sunrise and sunset in December in Matosinhos?

On the first day of December in Matosinhos, Portugal, sunrise is at 07:41 and sunset at 17:06. On the last day of the month, sunrise is at 08:00 and sunset at 17:15 WET.

How long on average sun shines in December in Matosinhos?

The average sunshine duration in December is 5.5h.

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

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

What is the UV index intensity in December in Matosinhos?

In Matosinhos, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.

Average temperature in December
Matosinhos, Portugal

Average temperature in December - Matosinhos, Portugal
  • Average high temperature in December: 13.8°C

The warmest month (with the highest average high temperature) is August (23.9°C).
The month with the lowest average high temperature is January (12.8°C).

  • Average low temperature in December: 9.5°C

The month with the highest average low temperature is August (16.5°C).
The coldest month (with the lowest average low temperature) is February (8.1°C).

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Average pressure in December
Matosinhos, Portugal

Average pressure in December - Matosinhos, Portugal
  • Average pressure in December: 1022.4mbar

The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in December
Matosinhos, Portugal

Average wind speed in December - Matosinhos, Portugal
  • Average wind speed in December: 13.5km/h

The windiest months (with the highest average wind speed) are February and November (14.3km/h).
The calmest month (with the lowest average wind speed) is September (10.7km/h).

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Average humidity in December
Matosinhos, Portugal

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

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is September (71%).

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Average rainfall in December
Matosinhos, Portugal

Average rainfall in December - Matosinhos, Portugal
  • Average rainfall in December: 93mm

The wettest month (with the highest rainfall) is November (108mm).
The driest month (with the least rainfall) is July (10mm).

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Average rainfall days in December
Matosinhos, Portugal

Average rainfall days in December - Matosinhos, Portugal
  • Average rainfall days in December: 13.7 days

The month with the highest number of rainy days is November (16.5 days).
The month with the least rainy days is August (4.6 days).

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Average sea temperature in December
Matosinhos, Portugal

Average sea temperature in December - Matosinhos, Portugal
  • Average sea temperature in December: 15.6°C

The best month for swimming (with the highest average sea temperature) is September (18.2°C).
The coldest months (with the lowest average sea temperature) are February and March (13.8°C).

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 5h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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Average sunshine days in December
Matosinhos, Portugal

Average sunshine days in December - Matosinhos, Portugal
  • Average sunshine days in December: 16.3 days

The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is November (11.9 days).

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Average UV index in December
Matosinhos, Portugal

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

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

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Average cloud cover in December
Matosinhos, Portugal

Average cloud cover in December - Matosinhos, Portugal
  • Average cloud cover in December: 40

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 18).

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Average visibility in December
Matosinhos, Portugal

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

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

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Matosinhos, Portugal

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