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December Weather in Guarda, Portugal

Last updated: August 27, 2025

In December, the average temperature in Guarda, Portugal is a brisk 7°C (45°F). Expect a minimum of -3°C (27°F) and a maximum of 15°C (59°F). During this month, 85 mm (3.3 in) of precipitation typically falls over 10 days, contributing to a high average humidity of 91%. Prepare for a cool and damp experience!

December Temperature in Guarda

In December in Guarda, the average temperature is 7°C (45°F). The maximum can reach 15°C (59°F), while the minimum can be as low as -3°C (27°F). Be sure to pack appropriately for a mix of cool and chilly weather when visiting.

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

The chart illustrates December temperature patterns in Guarda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guarda, December typically has an average temperature of 7°C (45°F), with highs reaching up to 15°C (59°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec414648536166727266584845
Data source: Temperature data for Guarda 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 Guarda

In Guarda in December, the precipitation amount is 85 mm (3.3 in) over the course of 10 days.

December Precipitation Trends in Guarda

The chart displays monthly precipitation patterns in Guarda, 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 Guarda, December typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec386787884028121040669285
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Guarda

In Guarda in December humidity is 91%. With an average temperature of 7°C (45°F), this humidity feels like a thick blanket wrapping around you, making it difficult to stay comfortable while traveling.

December Average Humidity in Guarda

This chart illustrates the average monthly humidity levels in Guarda, 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 Guarda is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%85%79%77%76%64%54%52%63%78%90%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Guarda

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

Maximum UV Index Levels in Guarda for December

The chart shows the monthly maximum UV Index (UVI) for Guarda 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 Guarda typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346910111098642
Data source: Guarda 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 Guarda Compares to Other Months

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

This table compares monthly weather conditions in Guarda, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)38 mm (1.5 inches)91%moderate
February Weather8°C (47°F)67 mm (2.7 inches)85%moderate
March Weather9°C (49°F)87 mm (3.4 inches)79%high
April Weather12°C (53°F)88 mm (3.5 inches)77%very high
May Weather16°C (61°F)40 mm (1.6 inches)76%very high
June Weather19°C (66°F)28 mm (1.1 inches)64%extreme
July Weather22°C (72°F)11 mm (0.5 inches)54%very high
August Weather22°C (72°F)10 mm (0.4 inches)52%very high
September Weather19°C (67°F)40 mm (1.6 inches)63%very high
October Weather15°C (59°F)66 mm (2.6 inches)78%high
November Weather9°C (49°F)92 mm (3.6 inches)90%moderate
December Weather7°C (45°F)85 mm (3.3 inches)91%low

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