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December Weather in Mortagua, Portugal

Last updated: August 27, 2025

In December, the average temperature in Mortagua, Portugal hovers around 10°C (50°F), with minimums dipping to -3°C (27°F) and maximums reaching up to 19°C (66°F). Expect an average precipitation amount of 168 mm (6.6 in) over 14 days, accompanied by a high humidity of 87%. Stay prepared for a chilly yet lively atmosphere!

December Temperature in Mortagua

In December in Mortagua, the average temperature is 10°C (50°F). Maximums can reach 19°C (66°F), and minimums can be as low as -3°C (27°F). Be prepared for moderate weather and pack layers to ensure comfort while exploring.

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

The chart illustrates December temperature patterns in Mortagua, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mortagua, December typically has an average temperature of 10°C (50°F), with highs reaching up to 19°C (66°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec465052566265707068615350
Data source: Temperature data for Mortagua 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 Mortagua

In Mortagua in December, the total precipitation amount is 168 mm (6.6 in) over a span of 14 days.

December Precipitation Trends in Mortagua

The chart displays monthly precipitation patterns in Mortagua, 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 Mortagua, December typically receives around 168 mm (6.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec921351551496838121542111167168
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mortagua

In Mortagua in December humidity is 87%. With an average temperature of 10°C (50°F), this humidity feels like a heavy cloak wrapping around you, making every step feel laborious and the air thick with moisture, challenging your comfort while traveling.

December Average Humidity in Mortagua

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

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

Maximum UV Index Levels in Mortagua for December

The chart shows the monthly maximum UV Index (UVI) for Mortagua 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 Mortagua typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689111098642
Data source: Mortagua 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 Mortagua Compares to Other Months

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

This table compares monthly weather conditions in Mortagua, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)92 mm (3.6 inches)87%moderate
February Weather10°C (51°F)135 mm (5.3 inches)81%moderate
March Weather11°C (53°F)155 mm (6.1 inches)78%high
April Weather13°C (56°F)149 mm (5.9 inches)79%very high
May Weather17°C (62°F)68 mm (2.7 inches)78%very high
June Weather18°C (65°F)38 mm (1.5 inches)71%extreme
July Weather21°C (70°F)12 mm (0.5 inches)63%very high
August Weather21°C (71°F)15 mm (0.6 inches)64%very high
September Weather20°C (68°F)42 mm (1.7 inches)71%very high
October Weather16°C (61°F)111 mm (4.4 inches)79%high
November Weather11°C (53°F)167 mm (6.6 inches)86%moderate
December Weather10°C (50°F)168 mm (6.6 inches)87%low

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