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December Weather in Silveira, Portugal

Last updated: August 27, 2025

In December, the average temperature in Silveira, Portugal hovers around 13°C (55°F), with temperatures ranging from a cool 5°C (41°F) to a pleasantly warm 18°C (65°F). During this time, expect approximately 68 mm (2.7 in) of precipitation over 10 days, accompanied by a high average humidity of 85%. Perfect for those who enjoy a refreshing atmosphere!

December Temperature in Silveira

In December in Silveira, the average temperature is 13°C (55°F). The maximum can reach 18°C (65°F) and the minimum can be as low as 5°C (41°F). It's a pleasant time for traveling, just be sure to pack some layers for the cooler moments!

December Weather in Silveira: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Silveira, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Silveira, December typically has an average temperature of 13°C (55°F), with highs reaching up to 18°C (65°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec525456586365686968645855
Data source: Temperature data for Silveira generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Silveira

In Silveira in December, the precipitation amount is 68 mm (2.7 in) over a span of 10 days.

December Precipitation Trends in Silveira

The chart displays monthly precipitation patterns in Silveira, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Silveira, December typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4255708242147430538868
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Silveira

In Silveira in December, humidity is 85%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making even short walks feel exhausting and urging travelers to seek shade and refreshment frequently.

December Average Humidity in Silveira

This chart illustrates the average monthly humidity levels in Silveira, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Silveira is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Silveira

In Silveira in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Silveira, you can check the information here.

Maximum UV Index Levels in Silveira for December

The chart shows the monthly maximum UV Index (UVI) for Silveira in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Silveira typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Silveira December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Silveira Compares to Other Months

Weather in Silveira varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Silveira, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Silveira, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)42 mm (1.6 inches)85%moderate
February Weather12°C (55°F)55 mm (2.2 inches)75%moderate
March Weather13°C (56°F)70 mm (2.8 inches)72%high
April Weather14°C (58°F)82 mm (3.2 inches)70%very high
May Weather17°C (63°F)42 mm (1.7 inches)70%very high
June Weather18°C (65°F)14 mm (0.5 inches)63%extreme
July Weather20°C (68°F)6 mm (0.3 inches)60%very high
August Weather20°C (69°F)4 mm (0.2 inches)60%very high
September Weather20°C (68°F)30 mm (1.2 inches)67%very high
October Weather18°C (64°F)53 mm (2.1 inches)74%high
November Weather14°C (58°F)88 mm (3.5 inches)83%moderate
December Weather13°C (55°F)68 mm (2.7 inches)85%moderate

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