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December Weather in Valadares, Portugal

Last updated: August 27, 2025

In December, the average temperature in Valadares, Portugal hovers around 8°C (47°F), with a minimum of -2°C (28°F) and a maximum reaching 17°C (62°F). Expect considerable precipitation, averaging 189 mm (7.4 in) over 15 days, contributing to a high average humidity of 87%.

December Temperature in Valadares

In December in Valadares, the average temperature is 8°C (47°F). Maximum temperatures can reach 17°C (62°F), while minimums can drop as low as -2°C (28°F). It's advisable to pack layers and be prepared for chilly evenings when visiting during this time.

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

The chart illustrates December temperature patterns in Valadares, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valadares, December typically has an average temperature of 8°C (47°F), with highs reaching up to 17°C (62°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec434850546063686965585047
Data source: Temperature data for Valadares 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 Valadares

In Valadares in December, the precipitation amount is 189 mm (7.4 in) spread over 15 days.

December Precipitation Trends in Valadares

The chart displays monthly precipitation patterns in Valadares, 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 Valadares, December typically receives around 189 mm (7.4 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec891451501417555262042107148189
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Valadares

In Valadares in December, humidity is 87%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration uncomfortably muggy despite the cool air.

December Average Humidity in Valadares

This chart illustrates the average monthly humidity levels in Valadares, 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 Valadares 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 Valadares

In Valadares 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 Valadares, you can visit Hourly UV Index in Valadares.

Maximum UV Index Levels in Valadares for December

The chart shows the monthly maximum UV Index (UVI) for Valadares 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 Valadares typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34699111098642
Data source: Valadares 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 Valadares Compares to Other Months

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

This table compares monthly weather conditions in Valadares, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)89 mm (3.5 inches)87%moderate
February Weather9°C (48°F)145 mm (5.7 inches)81%moderate
March Weather10°C (50°F)150 mm (5.9 inches)78%high
April Weather12°C (54°F)141 mm (5.6 inches)79%very high
May Weather16°C (60°F)74 mm (2.9 inches)78%very high
June Weather17°C (64°F)55 mm (2.2 inches)71%extreme
July Weather20°C (69°F)26 mm (1.0 inches)63%very high
August Weather20°C (69°F)20 mm (0.8 inches)64%very high
September Weather18°C (66°F)42 mm (1.7 inches)71%very high
October Weather15°C (59°F)106 mm (4.2 inches)79%high
November Weather10°C (50°F)148 mm (5.8 inches)86%moderate
December Weather8°C (47°F)189 mm (7.4 inches)87%low

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