nomadseason

December Weather in Chillon, Spain

Last updated: August 27, 2025

In December, the average temperature in Chillon, Spain is a brisk 9°C (48°F). Expect chilly nights with temperatures dipping to a minimum of -2°C (29°F), while daytime can warm up to a pleasant 20°C (68°F). Be prepared for 65 mm (2.5 in) of precipitation over approximately 8 days, and keep in mind that the average humidity is a high 86%.

December Temperature in Chillon

In December in Chillon, the average temperature is 9°C (48°F), with maximums reaching up to 20°C (68°F) and minimums dropping as low as -2°C (29°F). Be prepared for a range of temperatures when traveling during this time, packing both warm layers and lighter clothing.

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

The chart illustrates December temperature patterns in Chillon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chillon, December typically has an average temperature of 9°C (48°F), with highs reaching up to 20°C (68°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec445053576775828274645247
Data source: Temperature data for Chillon 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 Chillon

In Chillon in December, the precipitation amount is 65 mm (2.5 in) over a span of 8 days.

December Precipitation Trends in Chillon

The chart displays monthly precipitation patterns in Chillon, 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 Chillon, December typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec39357878301071225547265
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Chillon

In Chillon in December, humidity is 86%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that wraps around you, making outdoor activities uncomfortable and travel less enjoyable.

December Average Humidity in Chillon

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

In Chillon 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 Chillon, you can check the information here.

Maximum UV Index Levels in Chillon for December

The chart shows the monthly maximum UV Index (UVI) for Chillon 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 Chillon typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3479101111109743
Data source: Chillon 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 Chillon Compares to Other Months

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

This table compares monthly weather conditions in Chillon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)39 mm (1.5 inches)85%moderate
February Weather10°C (50°F)35 mm (1.4 inches)78%moderate
March Weather11°C (53°F)78 mm (3.1 inches)66%high
April Weather14°C (57°F)78 mm (3.1 inches)60%very high
May Weather19°C (67°F)30 mm (1.2 inches)56%very high
June Weather24°C (75°F)10 mm (0.4 inches)44%extreme
July Weather28°C (82°F)7 mm (0.3 inches)44%extreme
August Weather28°C (82°F)12 mm (0.5 inches)42%very high
September Weather23°C (74°F)25 mm (1.0 inches)53%very high
October Weather18°C (64°F)54 mm (2.1 inches)70%high
November Weather11°C (52°F)72 mm (2.8 inches)83%moderate
December Weather9°C (48°F)65 mm (2.5 inches)86%moderate

Compare Chillon's Climate with Cities Worldwide