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December Weather in Siimusti, Estonia

Last updated: August 23, 2025

In Siimusti, Estonia, the average temperature in December hovers around -2°C (30°F), with extremes ranging from a chilling -22°C (-8°F) to a mild 8°C (47°F). During this period, you can expect around 55 mm (2.2 in) of precipitation spread over approximately 14 days, contributing to a notably high average humidity of 93%. Prepare for a brisk and damp month!

December Temperature in Siimusti

In December in Siimusti, the average temperature is -2°C (30°F), with a maximum reaching 8°C (47°F) and a minimum dropping as low as -22°C (-8°F). Travelers should prepare for chilly conditions and dress warmly to enjoy their time in this winter wonderland.

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

The chart illustrates December temperature patterns in Siimusti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siimusti, December typically has an average temperature of -2°C (30°F), with highs reaching up to 8°C (47°F) and lows dropping to around -22°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec272631415162646154453729
Data source: Temperature data for Siimusti 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 Siimusti

In Siimusti in December, the total precipitation amount is 55 mm (2.2 in) over a duration of 14 days.

December Precipitation Trends in Siimusti

The chart displays monthly precipitation patterns in Siimusti, 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 Siimusti, December typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec404547475164689067755355
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siimusti

In Siimusti in December, humidity is 93%. With an average temperature of -2°C (30°F), this humidity feels like a biting chill that envelops you, making every breath a frosty reminder of the cold while also feeling heavier in the air, dampening the spirit of exploring the surroundings.

December Average Humidity in Siimusti

This chart illustrates the average monthly humidity levels in Siimusti, 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 Siimusti is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%90%87%73%77%80%84%89%93%93%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siimusti

In Siimusti 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 Siimusti.

Maximum UV Index Levels in Siimusti for December

The chart shows the monthly maximum UV Index (UVI) for Siimusti 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 Siimusti typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457764211
Data source: Siimusti 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 Siimusti Compares to Other Months

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

This table compares monthly weather conditions in Siimusti, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)40 mm (1.6 inches)95%low
February Weather-3°C (26°F)44 mm (1.8 inches)93%low
March Weather0°C (32°F)47 mm (1.9 inches)90%moderate
April Weather5°C (41°F)47 mm (1.8 inches)87%moderate
May Weather11°C (51°F)51 mm (2.0 inches)73%moderate
June Weather17°C (62°F)64 mm (2.5 inches)77%high
July Weather18°C (64°F)68 mm (2.7 inches)80%high
August Weather16°C (62°F)90 mm (3.5 inches)84%high
September Weather12°C (54°F)67 mm (2.6 inches)89%moderate
October Weather7°C (45°F)75 mm (3.0 inches)92%low
November Weather3°C (38°F)53 mm (2.1 inches)93%low
December Weather-2°C (30°F)55 mm (2.2 inches)93%low

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