nomadseason

December Weather in Castro del Rio, Spain

Last updated: August 27, 2025

In Castro del Rio, Spain, the average temperature in December hovers around 10°C (51°F), offering a mild yet refreshing climate. Temperatures can dip to a chilly -3°C (26°F), while sunny days can reach a pleasant 22°C (72°F). Expect 50 mm (2.0 in) of precipitation spread over approximately 8 days, contributing to an average humidity of 79%. Perfect for those who enjoy a cozy atmosphere!

December Temperature in Castro del Rio

In December in Castro del Rio, the average temperature is 10°C (51°F). Maximums can reach 22°C (72°F), and minimums can drop as low as -3°C (26°F). This means travelers should be prepared for a range of temperatures and pack accordingly to enjoy their visit comfortably.

December Weather in Castro del Rio: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Castro del Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castro del Rio, December typically has an average temperature of 10°C (51°F), with highs reaching up to 22°C (72°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec475356617077838476675551
Data source: Temperature data for Castro del Rio 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 Castro del Rio

In Castro del Rio in December, the total precipitation amount is 50 mm (2.0 in) spread over 8 days.

December Precipitation Trends in Castro del Rio

The chart displays monthly precipitation patterns in Castro del Rio, 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 Castro del Rio, December typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec3934816118711428446750
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Castro del Rio

In Castro del Rio in December, humidity is 79%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel somewhat uncomfortable unless you're properly layered.

December Average Humidity in Castro del Rio

This chart illustrates the average monthly humidity levels in Castro del Rio, 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 Castro del Rio 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 Castro del Rio

In Castro del Rio 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 Castro del Rio, you can check the information here.

Maximum UV Index Levels in Castro del Rio for December

The chart shows the monthly maximum UV Index (UVI) for Castro del Rio 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 Castro del Rio typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109743
Data source: Castro del Rio 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 Castro del Rio Compares to Other Months

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

This table compares monthly weather conditions in Castro del Rio, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)39 mm (1.5 inches)76%moderate
February Weather11°C (53°F)34 mm (1.3 inches)71%moderate
March Weather13°C (56°F)81 mm (3.2 inches)66%high
April Weather16°C (61°F)60 mm (2.4 inches)58%very high
May Weather21°C (70°F)18 mm (0.7 inches)55%very high
June Weather25°C (77°F)7 mm (0.3 inches)50%extreme
July Weather28°C (83°F)1 mm (0.1 inches)55%extreme
August Weather29°C (84°F)14 mm (0.5 inches)54%very high
September Weather25°C (77°F)28 mm (1.1 inches)61%very high
October Weather19°C (67°F)44 mm (1.7 inches)70%high
November Weather13°C (56°F)67 mm (2.7 inches)76%moderate
December Weather10°C (51°F)50 mm (2.0 inches)79%moderate

Compare Castro del Rio's Climate with Cities Worldwide