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December Weather in San Martin de Unx, Spain

Last updated: August 27, 2025

In San Martin de Unx, Spain, the average temperature in December hovers around 7°C (44°F), with a minimum dipping to -4°C (25°F) and a maximum reaching 16°C (62°F). Expect 71 mm (2.8 in) of precipitation spread over 11 days, contributing to a high average humidity of 87%. Prepare for a chilly, moist atmosphere during your visit!

December Temperature in San Martin de Unx

In December in San Martin de Unx, the average temperature is 7°C (44°F). The maximum can reach 16°C (62°F), while the minimum can drop as low as -4°C (25°F). Be prepared for chilly weather and pack layers to stay comfortable during your travels.

December Weather in San Martin de Unx: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Martin de Unx, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Martin de Unx, December typically has an average temperature of 7°C (44°F), with highs reaching up to 16°C (62°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec414649546168737367584844
Data source: Temperature data for San Martin de Unx 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 San Martin de Unx

In San Martin de Unx in December, the precipitation amount is 71 mm (2.8 in) distributed over 11 days.

December Precipitation Trends in San Martin de Unx

The chart displays monthly precipitation patterns in San Martin de Unx, 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 San Martin de Unx, December typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec584462856455142838527571
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Martin de Unx

In San Martin de Unx in December, humidity is 87%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and requiring travelers to layer up to stay warm and dry.

December Average Humidity in San Martin de Unx

This chart illustrates the average monthly humidity levels in San Martin de Unx, 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 San Martin de Unx is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%83%81%80%81%80%76%75%81%85%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Martin de Unx

In San Martin de Unx 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 San Martin de Unx, you can visit Hourly UV Index in San Martin de Unx.

Maximum UV Index Levels in San Martin de Unx for December

The chart shows the monthly maximum UV Index (UVI) for San Martin de Unx 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 San Martin de Unx typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589111098632
Data source: San Martin de Unx 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 San Martin de Unx Compares to Other Months

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

This table compares monthly weather conditions in San Martin de Unx, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)58 mm (2.3 inches)86%moderate
February Weather8°C (46°F)44 mm (1.7 inches)85%moderate
March Weather9°C (49°F)62 mm (2.4 inches)82%moderate
April Weather12°C (54°F)85 mm (3.4 inches)81%very high
May Weather16°C (61°F)64 mm (2.5 inches)80%very high
June Weather20°C (69°F)55 mm (2.2 inches)81%extreme
July Weather23°C (73°F)14 mm (0.6 inches)80%very high
August Weather23°C (73°F)28 mm (1.1 inches)76%very high
September Weather19°C (67°F)38 mm (1.5 inches)75%very high
October Weather14°C (58°F)52 mm (2.1 inches)81%high
November Weather9°C (49°F)75 mm (3.0 inches)85%moderate
December Weather7°C (44°F)71 mm (2.8 inches)87%low

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