nomadseason

December Weather in Arenas de San Juan, Spain

Last updated: August 27, 2025

In December, the average temperature in Arenas de San Juan, Spain hovers around 7°C (45°F), with a minimum that can dip as low as -4°C (24°F) and a maximum reaching up to 20°C (69°F). The region experiences about 36 mm (1.4 in) of precipitation spread over 6 days, contributing to a high average humidity of 86%.

December Temperature in Arenas de San Juan

In December in Arenas de San Juan, the average temperature is 7°C (45°F). Maximum temperatures can reach 20°C (69°F), while minimums can go as low as -4°C (24°F). Be sure to pack layers to stay comfortable during your travels!

December Weather in Arenas de San Juan: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Arenas de San Juan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arenas de San Juan, December typically has an average temperature of 7°C (45°F), with highs reaching up to 20°C (69°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec414851566675828172625045
Data source: Temperature data for Arenas de San Juan 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 Arenas de San Juan

In Arenas de San Juan in December, the total precipitation amount is 36 mm (1.4 in), which falls over the course of 6 days.

December Precipitation Trends in Arenas de San Juan

The chart displays monthly precipitation patterns in Arenas de San Juan, 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 Arenas de San Juan, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec302546632812101322445036
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Arenas de San Juan

In Arenas de San Juan in December, humidity is 86%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and necessitating cozy layers to stay warm while navigating the moist air.

December Average Humidity in Arenas de San Juan

This chart illustrates the average monthly humidity levels in Arenas de San Juan, 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 Arenas de San Juan is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%78%66%60%56%44%44%42%53%70%83%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arenas de San Juan

In Arenas de San Juan 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 Arenas de San Juan, you can check the information here.

Maximum UV Index Levels in Arenas de San Juan for December

The chart shows the monthly maximum UV Index (UVI) for Arenas de San Juan 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 Arenas de San Juan typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3469101211109743
Data source: Arenas de San Juan 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 Arenas de San Juan Compares to Other Months

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

This table compares monthly weather conditions in Arenas de San Juan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)30 mm (1.2 inches)85%moderate
February Weather9°C (48°F)25 mm (1.0 inches)78%moderate
March Weather11°C (51°F)46 mm (1.8 inches)66%high
April Weather13°C (56°F)63 mm (2.5 inches)60%very high
May Weather19°C (67°F)28 mm (1.1 inches)56%very high
June Weather24°C (76°F)12 mm (0.5 inches)44%extreme
July Weather28°C (82°F)10 mm (0.4 inches)44%extreme
August Weather27°C (82°F)13 mm (0.5 inches)42%very high
September Weather22°C (72°F)22 mm (0.9 inches)53%very high
October Weather17°C (62°F)44 mm (1.7 inches)70%high
November Weather10°C (50°F)50 mm (2.0 inches)83%moderate
December Weather7°C (45°F)36 mm (1.4 inches)86%moderate

Compare Arenas de San Juan's Climate with Cities Worldwide