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December Weather in Siauliai, Lithuania

Last updated: August 23, 2025

In Siauliai, Lithuania, the average temperature in December hovers around 0°C (32°F), with a chilly minimum of -21°C (-6°F) and a mild maximum reaching 10°C (49°F). Expect about 50 mm (2.0 in) of precipitation over the course of 12 days, contributing to a notably high average humidity of 95%. Prepare accordingly for a damp and cold month!

December Temperature in Siauliai

In December in Siauliai, the average temperature is 0°C (32°F). The maximum can reach 10°C (49°F), while the minimum can drop as low as -21°C (-6°F). Be prepared for a range of chilly weather conditions when traveling to Siauliai during this month.

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

The chart illustrates December temperature patterns in Siauliai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siauliai, December typically has an average temperature of 0°C (32°F), with highs reaching up to 10°C (49°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec292935445363646356474031
Data source: Temperature data for Siauliai 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 Siauliai

In Siauliai in December, the precipitation amount is 50 mm (2.0 in), occurring over the course of 12 days.

December Precipitation Trends in Siauliai

The chart displays monthly precipitation patterns in Siauliai, 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 Siauliai, December typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec443645356551917562605250
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siauliai

In Siauliai in December, humidity is 95%. With an average temperature of 0°C (32°F), this humidity feels like walking through a thick fog, making each breath feel heavy and damp, while the chill in the air adds an extra layer of discomfort for traveling.

December Average Humidity in Siauliai

This chart illustrates the average monthly humidity levels in Siauliai, 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 Siauliai is approximately 95%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%92%90%86%72%74%76%74%83%91%93%95%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siauliai

In Siauliai in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Siauliai.

Maximum UV Index Levels in Siauliai for December

The chart shows the monthly maximum UV Index (UVI) for Siauliai 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 Siauliai typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765321
Data source: Siauliai 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 Siauliai Compares to Other Months

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

This table compares monthly weather conditions in Siauliai, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)44 mm (1.7 inches)94%low
February Weather-2°C (29°F)36 mm (1.4 inches)92%low
March Weather1°C (35°F)45 mm (1.8 inches)90%moderate
April Weather6°C (44°F)35 mm (1.4 inches)86%moderate
May Weather12°C (53°F)65 mm (2.5 inches)72%high
June Weather17°C (64°F)51 mm (2.0 inches)74%high
July Weather18°C (65°F)91 mm (3.6 inches)76%high
August Weather17°C (63°F)75 mm (2.9 inches)74%high
September Weather13°C (56°F)62 mm (2.4 inches)83%moderate
October Weather9°C (48°F)60 mm (2.4 inches)91%moderate
November Weather4°C (40°F)52 mm (2.1 inches)93%low
December Weather0°C (32°F)50 mm (2.0 inches)95%low

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