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December Weather in Cillan, Spain

Last updated: August 27, 2025

In December, the average temperature in Cillan, Spain hovers around 5°C (41°F). Expect a chill, with lows dipping to -5°C (24°F) and warm afternoons reaching up to 17°C (62°F). The weather is likely to be wet, with 64 mm (2.5 in) of precipitation spread over 11 days. Be prepared for a damp experience with an average humidity of 91%.

December Temperature in Cillan

In December in Cillan, the average temperature is 5°C (41°F). The maximum can reach 17°C (62°F), while the minimum can drop to as low as -5°C (24°F). Be prepared for a mix of cool and mild weather during your travels.

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

The chart illustrates December temperature patterns in Cillan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cillan, December typically has an average temperature of 5°C (41°F), with highs reaching up to 17°C (62°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec374244495765717163544441
Data source: Temperature data for Cillan 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 Cillan

In Cillan in December, the total precipitation amount is 64 mm (2.5 in) spread over 11 days.

December Precipitation Trends in Cillan

The chart displays monthly precipitation patterns in Cillan, 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 Cillan, December typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec394759874542201434646764
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cillan

In Cillan in December humidity is 91%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling outdoors a rather uncomfortable experience unless you're dressed warmly and prepared for the moist air that clings to your skin.

December Average Humidity in Cillan

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

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

Maximum UV Index Levels in Cillan for December

The chart shows the monthly maximum UV Index (UVI) for Cillan 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 Cillan typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3479101111108642
Data source: Cillan 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 Cillan Compares to Other Months

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

This table compares monthly weather conditions in Cillan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)39 mm (1.5 inches)91%moderate
February Weather6°C (42°F)47 mm (1.9 inches)85%moderate
March Weather7°C (44°F)59 mm (2.3 inches)79%high
April Weather10°C (49°F)87 mm (3.4 inches)77%very high
May Weather14°C (58°F)45 mm (1.8 inches)76%very high
June Weather18°C (65°F)42 mm (1.7 inches)64%extreme
July Weather21°C (71°F)19 mm (0.8 inches)54%extreme
August Weather21°C (71°F)14 mm (0.5 inches)52%very high
September Weather17°C (63°F)34 mm (1.3 inches)63%very high
October Weather12°C (55°F)64 mm (2.5 inches)78%high
November Weather7°C (44°F)67 mm (2.6 inches)90%moderate
December Weather5°C (41°F)64 mm (2.5 inches)91%low

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