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December Weather in Rios, Spain

Last updated: August 27, 2025

In December, the average temperature in Rios, Spain hovers around 6°C (43°F), with a minimum dipping to -4°C (26°F) and a maximum reaching 15°C (59°F). Expect considerable precipitation, accumulating to 189 mm (7.4 in) over approximately 16 days. Notably, the average humidity is high, at 91%, making for a damp and chilly atmosphere.

December Temperature in Rios

In December in Rios, the average temperature is 6°C (43°F). Maximums can reach 15°C (59°F), while minimums can drop as low as -4°C (26°F). Be prepared for a range of weather conditions during your travels!

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

The chart illustrates December temperature patterns in Rios, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rios, December typically has an average temperature of 6°C (43°F), with highs reaching up to 15°C (59°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec404446505762676762554643
Data source: Temperature data for Rios 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 Rios

In Rios in December, the precipitation amount is 189 mm (7.4 in) occurring over the course of 16 days.

December Precipitation Trends in Rios

The chart displays monthly precipitation patterns in Rios, 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 Rios, December typically receives around 189 mm (7.4 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec851311251037753242343105140189
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rios

In Rios in December, humidity is 91%. With an average temperature of 6°C (43°F), this humidity feels like a thick blanket wrapped around you, making travel uncomfortable and sticky as every step becomes a challenge against the heavy, damp air.

December Average Humidity in Rios

This chart illustrates the average monthly humidity levels in Rios, 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 Rios is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%85%79%77%76%64%54%52%63%78%90%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rios

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

Maximum UV Index Levels in Rios for December

The chart shows the monthly maximum UV Index (UVI) for Rios 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 Rios typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246910111098642
Data source: Rios 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 Rios Compares to Other Months

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

This table compares monthly weather conditions in Rios, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)85 mm (3.3 inches)91%low
February Weather7°C (44°F)131 mm (5.2 inches)85%moderate
March Weather8°C (46°F)125 mm (4.9 inches)79%high
April Weather10°C (50°F)103 mm (4.0 inches)77%very high
May Weather14°C (58°F)77 mm (3.0 inches)76%very high
June Weather17°C (62°F)53 mm (2.1 inches)64%extreme
July Weather20°C (68°F)24 mm (0.9 inches)54%very high
August Weather20°C (67°F)23 mm (0.9 inches)52%very high
September Weather17°C (63°F)43 mm (1.7 inches)63%very high
October Weather13°C (55°F)105 mm (4.1 inches)78%high
November Weather8°C (46°F)140 mm (5.5 inches)90%moderate
December Weather6°C (43°F)189 mm (7.4 inches)91%low

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