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December Weather in Arroniz, Spain

Last updated: August 27, 2025

The average temperature in Arroniz, Spain during December is a cool 7°C (45°F), with minimums plummeting to -4°C (26°F) and maximums reaching 17°C (63°F). Expect about 65 mm (2.5 in) of rainfall spread over 11 days, and enjoy the lush atmosphere with an average humidity of 87%.

December Temperature in Arroniz

In December in Arroniz, the average temperature is 7°C (45°F). Maximums can reach 17°C (63°F), and minimums can drop as low as -4°C (26°F). Be prepared for a mix of mild and chilly weather during your travels.

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

The chart illustrates December temperature patterns in Arroniz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arroniz, December typically has an average temperature of 7°C (45°F), with highs reaching up to 17°C (63°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec414649536168727266584844
Data source: Temperature data for Arroniz 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 Arroniz

In Arroniz in December, the precipitation amount is 65 mm (2.5 in) over a span of 11 days.

December Precipitation Trends in Arroniz

The chart displays monthly precipitation patterns in Arroniz, 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 Arroniz, December typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec594561815966233433507965
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arroniz

In Arroniz in December, humidity is 87%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures somewhat uncomfortable and urging travelers to seek refuge in cozy cafes or warm indoor activities.

December Average Humidity in Arroniz

This chart illustrates the average monthly humidity levels in Arroniz, 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 Arroniz 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 Arroniz

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

Maximum UV Index Levels in Arroniz for December

The chart shows the monthly maximum UV Index (UVI) for Arroniz 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 Arroniz typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689111098632
Data source: Arroniz 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 Arroniz Compares to Other Months

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

This table compares monthly weather conditions in Arroniz, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)59 mm (2.3 inches)86%moderate
February Weather8°C (46°F)45 mm (1.8 inches)85%moderate
March Weather9°C (49°F)61 mm (2.4 inches)82%high
April Weather12°C (53°F)81 mm (3.2 inches)81%very high
May Weather16°C (61°F)59 mm (2.3 inches)80%very high
June Weather20°C (68°F)66 mm (2.6 inches)81%extreme
July Weather22°C (72°F)23 mm (0.9 inches)80%very high
August Weather22°C (72°F)34 mm (1.3 inches)76%very high
September Weather19°C (66°F)33 mm (1.3 inches)75%very high
October Weather14°C (58°F)50 mm (2.0 inches)81%high
November Weather9°C (49°F)79 mm (3.1 inches)85%moderate
December Weather7°C (45°F)65 mm (2.5 inches)87%low

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