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December Weather in Lully, Switzerland

Last updated: August 27, 2025

In Lully, Switzerland, the average temperature in December hovers around 3°C (38°F). Expect chilly conditions with a minimum of -7°C (19°F) and a maximum reaching up to 13°C (56°F). The weather is quite moist, bringing about 160 mm (6.3 in) of precipitation over 18 days, contributing to an average humidity level of a high 91%. 🌧️

December Temperature in Lully

In December in Lully, the average temperature is 3°C (38°F), with maximums reaching 13°C (56°F) and minimums dropping as low as -7°C (19°F). It's advisable to pack warm clothing and prepare for chilly conditions if you plan to travel during this time.

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

The chart illustrates December temperature patterns in Lully, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lully, December typically has an average temperature of 3°C (38°F), with highs reaching up to 13°C (56°F) and lows dropping to around -7°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec353943495564676760524338
Data source: Temperature data for Lully 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 Lully

In Lully in December, the precipitation amount is 160 mm (6.3 in) spread across 18 days.

December Precipitation Trends in Lully

The chart displays monthly precipitation patterns in Lully, 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 Lully, December typically receives around 160 mm (6.3 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec99811075413310210399689790160
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lully

In Lully in December humidity is 91%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and necessitating layered clothing to stay warm and dry during your travels.

December Average Humidity in Lully

This chart illustrates the average monthly humidity levels in Lully, 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 Lully is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lully

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

Maximum UV Index Levels in Lully for December

The chart shows the monthly maximum UV Index (UVI) for Lully 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 Lully typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236689986432
Data source: Lully 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 Lully Compares to Other Months

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

This table compares monthly weather conditions in Lully, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)99 mm (3.9 inches)91%low
February Weather4°C (39°F)81 mm (3.2 inches)89%moderate
March Weather6°C (43°F)107 mm (4.2 inches)87%high
April Weather10°C (49°F)54 mm (2.1 inches)84%high
May Weather13°C (55°F)133 mm (5.2 inches)80%very high
June Weather18°C (64°F)101 mm (4.0 inches)82%very high
July Weather20°C (67°F)103 mm (4.1 inches)82%very high
August Weather19°C (67°F)99 mm (3.9 inches)77%very high
September Weather16°C (60°F)68 mm (2.7 inches)81%high
October Weather11°C (52°F)97 mm (3.8 inches)89%moderate
November Weather6°C (43°F)90 mm (3.6 inches)89%moderate
December Weather3°C (38°F)160 mm (6.3 inches)91%low

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