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December Weather in Casla, Spain

Last updated: August 27, 2025

In December, the average temperature in Casla, Spain hovers around 5°C (40°F). Expect chilly lows of -4°C (25°F) and pleasant highs of 17°C (64°F). This month sees 74 mm (2.9 in) of precipitation spread over 12 days, contributing to a high average humidity of 90%. Be prepared for a damp and cool climate!

December Temperature in Casla

In December, in Casla, the average temperature is 5°C (40°F). The maximum can reach 17°C (64°F), while the minimum can dip as low as -4°C (25°F). Be sure to pack layers to stay comfortable while exploring this destination.

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

The chart illustrates December temperature patterns in Casla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casla, December typically has an average temperature of 5°C (40°F), with highs reaching up to 17°C (64°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec374144495764717163544440
Data source: Temperature data for Casla 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 Casla

In Casla in December, the precipitation amount is 74 mm (2.9 in) over a span of 12 days.

December Precipitation Trends in Casla

The chart displays monthly precipitation patterns in Casla, 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 Casla, December typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec545368967154201832538174
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Casla

In Casla in December, humidity is 90%. With an average temperature of 5°C (40°F), this humidity feels like you're walking through a dense fog, making every step feel heavier and more challenging for traveling.

December Average Humidity in Casla

This chart illustrates the average monthly humidity levels in Casla, 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 Casla is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%86%79%74%71%63%59%58%66%77%87%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Casla

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

Maximum UV Index Levels in Casla for December

The chart shows the monthly maximum UV Index (UVI) for Casla 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 Casla typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3479101111108642
Data source: Casla 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 Casla Compares to Other Months

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

This table compares monthly weather conditions in Casla, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)54 mm (2.1 inches)90%moderate
February Weather5°C (42°F)53 mm (2.1 inches)86%moderate
March Weather7°C (44°F)68 mm (2.7 inches)79%high
April Weather9°C (49°F)96 mm (3.8 inches)74%very high
May Weather14°C (57°F)71 mm (2.8 inches)71%very high
June Weather18°C (65°F)54 mm (2.1 inches)63%extreme
July Weather22°C (72°F)20 mm (0.8 inches)59%extreme
August Weather22°C (72°F)18 mm (0.7 inches)58%very high
September Weather17°C (63°F)32 mm (1.2 inches)65%very high
October Weather12°C (54°F)53 mm (2.1 inches)77%high
November Weather6°C (44°F)81 mm (3.2 inches)87%moderate
December Weather5°C (40°F)74 mm (2.9 inches)90%low

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