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December Weather in Chaves, Portugal

Last updated: August 27, 2025

In Chaves, Portugal, the average temperature in December hovers around 7°C (45°F), with a minimum dipping to -3°C (27°F) and a maximum reaching 16°C (61°F). Expect 114 mm (4.5 in) of precipitation spread over 11 days, contributing to an average humidity level of 87%.

December Temperature in Chaves

In December in Chaves, the average temperature is 7°C (45°F), with maximums reaching 16°C (61°F) and minimums dropping as low as -3°C (27°F). Be prepared for a mix of cool and chilly weather, ideal for layering and enjoying outdoor activities.

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

The chart illustrates December temperature patterns in Chaves, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chaves, December typically has an average temperature of 7°C (45°F), with highs reaching up to 16°C (61°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec424648525964696964574845
Data source: Temperature data for Chaves 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 Chaves

In Chaves in December, the total precipitation amount is 114 mm (4.5 in) spread over 11 days.

December Precipitation Trends in Chaves

The chart displays monthly precipitation patterns in Chaves, 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 Chaves, December typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec4387909049391915307180114
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Chaves

In Chaves in December, humidity is 87%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures somewhat uncomfortable and urging travelers to seek refuge in cozy cafes or warm indoor activities.

December Average Humidity in Chaves

This chart illustrates the average monthly humidity levels in Chaves, 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 Chaves is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%81%78%79%78%71%63%64%71%79%86%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Chaves

In Chaves in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Chaves, you can visit Hourly UV Index in Chaves.

Maximum UV Index Levels in Chaves for December

The chart shows the monthly maximum UV Index (UVI) for Chaves 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 Chaves typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246910111098642
Data source: Chaves 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 Chaves Compares to Other Months

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

This table compares monthly weather conditions in Chaves, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)43 mm (1.7 inches)87%low
February Weather8°C (46°F)87 mm (3.4 inches)81%moderate
March Weather9°C (48°F)90 mm (3.5 inches)78%high
April Weather11°C (52°F)90 mm (3.5 inches)79%very high
May Weather15°C (59°F)49 mm (1.9 inches)78%very high
June Weather18°C (64°F)39 mm (1.5 inches)71%extreme
July Weather21°C (69°F)19 mm (0.8 inches)63%very high
August Weather20°C (69°F)15 mm (0.6 inches)64%very high
September Weather18°C (65°F)30 mm (1.2 inches)71%very high
October Weather14°C (57°F)71 mm (2.8 inches)79%high
November Weather9°C (48°F)80 mm (3.2 inches)86%moderate
December Weather7°C (45°F)114 mm (4.5 inches)87%low

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