nomadseason

December Weather in Castaras, Spain

Last updated: August 27, 2025

In Castaras, Spain, the average temperature in December hovers around 7°C (44°F). While temperatures can dip as low as -5°C (24°F), they can also reach a pleasant 19°C (66°F). Expect around 44 mm (1.7 in) of precipitation over 6 days, contributing to an average humidity level of 79%.

December Temperature in Castaras

In December in Castaras, the average temperature is 7°C (44°F). The maximum can reach 19°C (66°F), while the minimum can drop as low as -5°C (24°F). This variation in temperature means you should pack layers to stay comfortable while exploring.

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

The chart illustrates December temperature patterns in Castaras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castaras, December typically has an average temperature of 7°C (44°F), with highs reaching up to 19°C (66°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec414547516068757566574744
Data source: Temperature data for Castaras generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Castaras

In Castaras in December, the total precipitation amount is 44 mm (1.7 in) spread over 6 days.

December Precipitation Trends in Castaras

The chart displays monthly precipitation patterns in Castaras, 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 Castaras, December typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec423710397591793169596544
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Castaras

In Castaras in December humidity is 79%. With an average temperature of 7°C (44°F), this humidity feels like a chilly embrace that makes traveling outdoors a brisk adventure, requiring extra layers to stay comfortable while exploring the sights.

December Average Humidity in Castaras

This chart illustrates the average monthly humidity levels in Castaras, 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 Castaras is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%71%66%58%55%50%55%54%61%70%76%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Castaras

In Castaras 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 Castaras, you can check the information here.

Maximum UV Index Levels in Castaras for December

The chart shows the monthly maximum UV Index (UVI) for Castaras 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 Castaras typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec358101112121110753
Data source: Castaras 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 Castaras Compares to Other Months

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

This table compares monthly weather conditions in Castaras, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)42 mm (1.7 inches)76%moderate
February Weather7°C (46°F)37 mm (1.4 inches)71%moderate
March Weather8°C (47°F)103 mm (4.1 inches)66%very high
April Weather10°C (51°F)97 mm (3.8 inches)58%very high
May Weather16°C (60°F)59 mm (2.3 inches)55%extreme
June Weather20°C (68°F)17 mm (0.7 inches)50%extreme
July Weather24°C (76°F)8 mm (0.3 inches)55%extreme
August Weather24°C (75°F)30 mm (1.2 inches)54%extreme
September Weather19°C (66°F)69 mm (2.7 inches)61%very high
October Weather14°C (58°F)59 mm (2.3 inches)70%high
November Weather8°C (47°F)65 mm (2.6 inches)76%moderate
December Weather7°C (44°F)44 mm (1.7 inches)79%moderate

Compare Castaras's Climate with Cities Worldwide