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December Weather in Caldas de Reis, Spain

Last updated: August 27, 2025

In December, the average temperature in Caldas de Reis, Spain hovers around 11°C (52°F), creating a mild atmosphere. Expect minimums of 2°C (36°F) and maximums reaching 18°C (65°F). However, be prepared for rain as 225 mm (8.9 in) of precipitation can fall over 18 days, with an average humidity level of 85%.

December Temperature in Caldas de Reis

In December in Caldas de Reis, the average temperature is 11°C (52°F). Maximums can reach 18°C (65°F) and minimums can be as low as 2°C (36°F). It's advisable to pack layers to stay comfortable while exploring the area.

December Weather in Caldas de Reis: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Caldas de Reis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Caldas de Reis, December typically has an average temperature of 11°C (52°F), with highs reaching up to 18°C (65°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec495252556063676765605452
Data source: Temperature data for Caldas de Reis 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 Caldas de Reis

In Caldas de Reis in December, the precipitation amount is 225 mm (8.9 in) spread over 18 days, indicating a moderate frequency of rainfall during that time.

December Precipitation Trends in Caldas de Reis

The chart displays monthly precipitation patterns in Caldas de Reis, 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 Caldas de Reis, December typically receives around 225 mm (8.9 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec12516716713810561293554140189225
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Caldas de Reis

In Caldas de Reis in December, humidity is 85%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making travel quite uncomfortable as the air feels heavy and can sap your energy.

December Average Humidity in Caldas de Reis

This chart illustrates the average monthly humidity levels in Caldas de Reis, 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 Caldas de Reis is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%83%82%83%83%83%82%78%79%82%84%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Caldas de Reis

In Caldas de Reis 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 Caldas de Reis, you can visit Hourly UV Index in Caldas de Reis.

Maximum UV Index Levels in Caldas de Reis for December

The chart shows the monthly maximum UV Index (UVI) for Caldas de Reis 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 Caldas de Reis typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997632
Data source: Caldas de Reis 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 Caldas de Reis Compares to Other Months

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

This table compares monthly weather conditions in Caldas de Reis, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)125 mm (4.9 inches)84%low
February Weather11°C (52°F)167 mm (6.6 inches)83%moderate
March Weather11°C (53°F)167 mm (6.6 inches)82%moderate
April Weather13°C (56°F)138 mm (5.4 inches)83%very high
May Weather16°C (61°F)105 mm (4.1 inches)83%very high
June Weather17°C (64°F)61 mm (2.4 inches)83%very high
July Weather20°C (68°F)29 mm (1.1 inches)82%very high
August Weather20°C (68°F)35 mm (1.4 inches)78%very high
September Weather18°C (66°F)54 mm (2.1 inches)79%high
October Weather16°C (60°F)140 mm (5.5 inches)82%high
November Weather12°C (54°F)189 mm (7.5 inches)84%moderate
December Weather11°C (52°F)225 mm (8.9 inches)85%low

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