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December Weather in Arrentela, Portugal

Last updated: August 27, 2025

In December, the average temperature in Arrentela, Portugal hovers around 14°C (57°F). Visitors can expect a minimum temperature of 6°C (43°F) and a maximum of 18°C (66°F). Throughout the month, approximately 54 mm (2.1 in) of precipitation may occur over 7 days, contributing to an average humidity of 85%.

December Temperature in Arrentela

In December in Arrentela, the average temperature is 14°C (57°F). The maximum can reach 18°C (66°F), while the minimum can be as low as 6°C (43°F). This moderate climate makes it a great time to explore the outdoors and enjoy the local attractions.

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

The chart illustrates December temperature patterns in Arrentela, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arrentela, December typically has an average temperature of 14°C (57°F), with highs reaching up to 18°C (66°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec545657596466697069655956
Data source: Temperature data for Arrentela 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 Arrentela

In Arrentela in December, the precipitation amount is 54 mm (2.1 in) over a duration of 7 days.

December Precipitation Trends in Arrentela

The chart displays monthly precipitation patterns in Arrentela, 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 Arrentela, December typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec345366633184318397054
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arrentela

In Arrentela in December, humidity is 85%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and sluggish.

December Average Humidity in Arrentela

This chart illustrates the average monthly humidity levels in Arrentela, 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 Arrentela is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arrentela

In Arrentela 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 Arrentela, you can check the information here.

Maximum UV Index Levels in Arrentela for December

The chart shows the monthly maximum UV Index (UVI) for Arrentela 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 Arrentela typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Arrentela 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 Arrentela Compares to Other Months

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

This table compares monthly weather conditions in Arrentela, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)34 mm (1.3 inches)85%moderate
February Weather13°C (56°F)53 mm (2.1 inches)75%moderate
March Weather14°C (58°F)66 mm (2.6 inches)72%high
April Weather15°C (60°F)63 mm (2.5 inches)70%very high
May Weather18°C (64°F)31 mm (1.2 inches)70%very high
June Weather19°C (67°F)8 mm (0.3 inches)63%extreme
July Weather21°C (70°F)4 mm (0.2 inches)60%very high
August Weather21°C (71°F)3 mm (0.1 inches)60%very high
September Weather21°C (69°F)18 mm (0.7 inches)67%very high
October Weather19°C (66°F)39 mm (1.5 inches)74%high
November Weather15°C (60°F)69 mm (2.7 inches)83%moderate
December Weather14°C (57°F)54 mm (2.1 inches)85%moderate

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