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December Weather in Castelseras, Spain

Last updated: August 27, 2025

In December, the average temperature in Castelseras, Spain hovers around 8°C (48°F). You might experience a chill, as the minimum can drop to -4°C (26°F), while the mercury can rise as high as 20°C (69°F). Expect about 29 mm (1.1 in) of precipitation over 5 days, and be prepared for a notably high average humidity of 84%.

December Temperature in Castelseras

In December in Castelseras, the average temperature is 8°C (48°F). The maximum can reach 20°C (69°F), and the minimum can be as low as -4°C (26°F). It's advisable to pack layers to stay comfortable throughout the day.

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

The chart illustrates December temperature patterns in Castelseras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castelseras, December typically has an average temperature of 8°C (48°F), with highs reaching up to 20°C (69°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec444952566573797870615147
Data source: Temperature data for Castelseras 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 Castelseras

In Castelseras in December, the total precipitation amount is 29 mm (1.1 in) recorded over a span of 5 days.

December Precipitation Trends in Castelseras

The chart displays monthly precipitation patterns in Castelseras, 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 Castelseras, December typically receives around 29 mm (1.1 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec481729774341192030385729
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Castelseras

In Castelseras in December humidity is 84%. With an average temperature of 8°C (48°F), this humidity feels like a damp chill that seeps into your bones, making it uncomfortable for traveling and requiring you to layer up as you explore.

December Average Humidity in Castelseras

This chart illustrates the average monthly humidity levels in Castelseras, 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 Castelseras is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%73%69%64%59%58%58%64%76%82%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Castelseras

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

Maximum UV Index Levels in Castelseras for December

The chart shows the monthly maximum UV Index (UVI) for Castelseras 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 Castelseras typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689111198642
Data source: Castelseras 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 Castelseras Compares to Other Months

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

This table compares monthly weather conditions in Castelseras, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)48 mm (1.9 inches)85%moderate
February Weather10°C (50°F)17 mm (0.7 inches)80%moderate
March Weather11°C (53°F)29 mm (1.1 inches)73%high
April Weather13°C (56°F)77 mm (3.0 inches)69%very high
May Weather18°C (65°F)43 mm (1.7 inches)64%very high
June Weather23°C (73°F)41 mm (1.6 inches)59%extreme
July Weather26°C (79°F)19 mm (0.8 inches)58%extreme
August Weather26°C (79°F)20 mm (0.8 inches)58%very high
September Weather21°C (70°F)30 mm (1.2 inches)64%very high
October Weather16°C (62°F)38 mm (1.5 inches)76%high
November Weather11°C (51°F)57 mm (2.2 inches)82%moderate
December Weather8°C (48°F)29 mm (1.1 inches)84%low

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