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December Weather in Castrillo del Val, Spain

Last updated: August 27, 2025

In December, the average temperature in Castrillo del Val, Spain hovers around 5°C (41°F), with fluctuations ranging from a chilly -8°C (19°F) to a mild 16°C (62°F). Expect about 75 mm (3.0 in) of precipitation spread over 13 days, contributing to an average humidity of 85%. Prepare for a damp and cool month!

December Temperature in Castrillo del Val

In December in Castrillo del Val, the average temperature is 5°C (41°F). Maximums can reach 16°C (62°F), while minimums can drop as low as -8°C (19°F). Be prepared for a mix of chilly days and milder weather while traveling.

December Weather in Castrillo del Val: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Castrillo del Val, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castrillo del Val, December typically has an average temperature of 5°C (41°F), with highs reaching up to 16°C (62°F) and lows dropping to around -8°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec374244485562676761534441
Data source: Temperature data for Castrillo del Val 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 Castrillo del Val

In Castrillo del Val in December, the precipitation amount is 75 mm (3.0 in) over the course of 13 days.

December Precipitation Trends in Castrillo del Val

The chart displays monthly precipitation patterns in Castrillo del Val, 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 Castrillo del Val, December typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec6363741067178372051579575
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Castrillo del Val

In Castrillo del Val in December, humidity is 85%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a challenge as the cold air clings to your skin.

December Average Humidity in Castrillo del Val

This chart illustrates the average monthly humidity levels in Castrillo del Val, 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 Castrillo del Val is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%83%82%81%81%83%87%82%77%80%83%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Castrillo del Val

In Castrillo del Val 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 Castrillo del Val, you can visit Hourly UV Index in Castrillo del Val.

Maximum UV Index Levels in Castrillo del Val for December

The chart shows the monthly maximum UV Index (UVI) for Castrillo del Val 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 Castrillo del Val typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810111198632
Data source: Castrillo del Val 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 Castrillo del Val Compares to Other Months

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

This table compares monthly weather conditions in Castrillo del Val, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)62 mm (2.5 inches)85%moderate
February Weather5°C (42°F)63 mm (2.5 inches)83%moderate
March Weather7°C (44°F)74 mm (2.9 inches)82%high
April Weather9°C (48°F)106 mm (4.2 inches)81%very high
May Weather13°C (55°F)71 mm (2.8 inches)81%very high
June Weather17°C (62°F)78 mm (3.1 inches)83%extreme
July Weather19°C (67°F)37 mm (1.4 inches)87%extreme
August Weather20°C (68°F)20 mm (0.8 inches)82%very high
September Weather16°C (61°F)51 mm (2.0 inches)77%very high
October Weather12°C (54°F)56 mm (2.2 inches)80%high
November Weather7°C (44°F)95 mm (3.7 inches)83%moderate
December Weather5°C (41°F)75 mm (3.0 inches)85%low

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