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December Weather in Serra de El-Rei, Portugal

Last updated: August 27, 2025

In Serra de El-Rei, Portugal, the average temperature for December hovers around 13°C (55°F). Expect a minimum of 5°C (42°F) and a maximum of 18°C (65°F). During this month, you'll encounter approximately 71 mm (2.8 in) of precipitation spread over 10 days, contributing to an average humidity of 85%. Be prepared for a mix of cool and damp weather!

December Temperature in Serra de El-Rei

In December in Serra de El-Rei, the average temperature is 13°C (55°F). Maximum temperatures can reach 18°C (65°F), while minimums can drop as low as 5°C (42°F). Be sure to pack layers to stay comfortable while exploring the varied weather conditions!

December Weather in Serra de El-Rei: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Serra de El-Rei, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serra de El-Rei, 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 (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec525556586264676867645855
Data source: Temperature data for Serra de El-Rei 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 Serra de El-Rei

In Serra de El-Rei in December, the precipitation amount is 71 mm (2.8 in) over a duration of 10 days.

December Precipitation Trends in Serra de El-Rei

The chart displays monthly precipitation patterns in Serra de El-Rei, 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 Serra de El-Rei, December typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4554707939178627639071
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Serra de El-Rei

In Serra de El-Rei 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 Serra de El-Rei

This chart illustrates the average monthly humidity levels in Serra de El-Rei, 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 Serra de El-Rei 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 Serra de El-Rei

In Serra de El-Rei 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 Serra de El-Rei, you can check the information here.

Maximum UV Index Levels in Serra de El-Rei for December

The chart shows the monthly maximum UV Index (UVI) for Serra de El-Rei 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 Serra de El-Rei typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Serra de El-Rei 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 Serra de El-Rei Compares to Other Months

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

This table compares monthly weather conditions in Serra de El-Rei, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)45 mm (1.8 inches)85%moderate
February Weather13°C (55°F)54 mm (2.1 inches)75%moderate
March Weather13°C (56°F)69 mm (2.7 inches)72%high
April Weather14°C (58°F)79 mm (3.1 inches)70%very high
May Weather17°C (63°F)39 mm (1.5 inches)70%very high
June Weather18°C (65°F)17 mm (0.7 inches)63%extreme
July Weather19°C (67°F)8 mm (0.3 inches)60%very high
August Weather20°C (68°F)6 mm (0.2 inches)60%very high
September Weather19°C (67°F)27 mm (1.1 inches)67%very high
October Weather18°C (64°F)63 mm (2.5 inches)74%high
November Weather14°C (58°F)90 mm (3.6 inches)83%moderate
December Weather13°C (55°F)71 mm (2.8 inches)85%moderate

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