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December Weather in Unhais-o-Velho, Portugal

Last updated: August 27, 2025

In December, the average temperature in Unhais-o-Velho, Portugal hovers around 8°C (47°F). Expect a chilly range where the minimum can dip to -2°C (28°F) and the maximum soars to 17°C (63°F). Rain may appear, with an average precipitation of 134 mm (5.3 in) spread over 13 days. Additionally, the average humidity stands high at 87%, making it a notably damp month.

December Temperature in Unhais-o-Velho

In December in Unhais-o-Velho, the average temperature is 8°C (47°F). Maximum temperatures can reach 17°C (63°F), while minimums can drop as low as -2°C (28°F). Be prepared for a diverse range of weather conditions when traveling this month.

December Weather in Unhais-o-Velho: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Unhais-o-Velho, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unhais-o-Velho, December typically has an average temperature of 8°C (47°F), with highs reaching up to 17°C (63°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec434749536064707066594946
Data source: Temperature data for Unhais-o-Velho 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 Unhais-o-Velho

In Unhais-o-Velho in December, the precipitation amount is 134 mm (5.3 in) recorded over the course of 13 days.

December Precipitation Trends in Unhais-o-Velho

The chart displays monthly precipitation patterns in Unhais-o-Velho, 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 Unhais-o-Velho, December typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec64104135138664115184898145134
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Unhais-o-Velho

In Unhais-o-Velho 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 Unhais-o-Velho

This chart illustrates the average monthly humidity levels in Unhais-o-Velho, 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 Unhais-o-Velho 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 Unhais-o-Velho

In Unhais-o-Velho 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 Unhais-o-Velho, you can check the information here.

Maximum UV Index Levels in Unhais-o-Velho for December

The chart shows the monthly maximum UV Index (UVI) for Unhais-o-Velho 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 Unhais-o-Velho typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346910111098643
Data source: Unhais-o-Velho 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 Unhais-o-Velho Compares to Other Months

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

This table compares monthly weather conditions in Unhais-o-Velho, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)64 mm (2.5 inches)87%moderate
February Weather9°C (48°F)104 mm (4.1 inches)81%moderate
March Weather10°C (50°F)135 mm (5.3 inches)78%high
April Weather12°C (53°F)138 mm (5.4 inches)79%very high
May Weather16°C (60°F)66 mm (2.6 inches)78%very high
June Weather18°C (64°F)41 mm (1.6 inches)71%extreme
July Weather21°C (70°F)15 mm (0.6 inches)63%very high
August Weather21°C (70°F)18 mm (0.7 inches)64%very high
September Weather19°C (66°F)48 mm (1.9 inches)71%very high
October Weather15°C (59°F)98 mm (3.9 inches)79%high
November Weather10°C (50°F)145 mm (5.7 inches)86%moderate
December Weather8°C (47°F)134 mm (5.3 inches)87%moderate

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