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December Weather in Vale de Santarem, Portugal

Last updated: August 27, 2025

In December, the average temperature in Vale de Santarem, Portugal hovers around 11°C (53°F), with a minimum dip to -2°C (28°F) and a maximum elevation to 20°C (68°F). Expect 59 mm (2.3 in) of precipitation spread over 8 days, contributing to a notably high average humidity of 85%. Prepare for a varied climate as you enjoy your time in this vibrant locale!

December Temperature in Vale de Santarem

In December in Vale de Santarem, the average temperature is 11°C (53°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as -2°C (28°F). Travelers should be prepared for a range of weather conditions, from mild days to chilly nights.

December Weather in Vale de Santarem: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Vale de Santarem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vale de Santarem, December typically has an average temperature of 11°C (53°F), with highs reaching up to 20°C (68°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec495456596568717270655653
Data source: Temperature data for Vale de Santarem 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 Vale de Santarem

In Vale de Santarem in December, the total precipitation amount is 59 mm (2.3 in) spread over 8 days.

December Precipitation Trends in Vale de Santarem

The chart displays monthly precipitation patterns in Vale de Santarem, 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 Vale de Santarem, December typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec3854808641154627568959
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Vale de Santarem

In Vale de Santarem in December humidity is 85%. With an average temperature of 11°C (53°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and creating a dampness in the air that can be exhausting for travelers.

December Average Humidity in Vale de Santarem

This chart illustrates the average monthly humidity levels in Vale de Santarem, 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 Vale de Santarem 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 Vale de Santarem

In Vale de Santarem 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 Vale de Santarem, you can check the information here.

Maximum UV Index Levels in Vale de Santarem for December

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

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

This table compares monthly weather conditions in Vale de Santarem, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)38 mm (1.5 inches)85%moderate
February Weather12°C (54°F)54 mm (2.1 inches)75%moderate
March Weather13°C (56°F)80 mm (3.1 inches)72%high
April Weather15°C (59°F)86 mm (3.4 inches)70%very high
May Weather18°C (65°F)41 mm (1.6 inches)70%very high
June Weather20°C (68°F)15 mm (0.6 inches)63%extreme
July Weather22°C (72°F)3 mm (0.1 inches)60%very high
August Weather22°C (72°F)6 mm (0.2 inches)60%very high
September Weather21°C (71°F)27 mm (1.1 inches)67%very high
October Weather18°C (65°F)55 mm (2.2 inches)74%high
November Weather13°C (56°F)89 mm (3.5 inches)83%moderate
December Weather11°C (53°F)59 mm (2.3 inches)85%moderate

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