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December Weather in Siikainen, Finland

Last updated: August 23, 2025

In December, the average temperature in Siikainen, Finland hovers around -2°C (29°F). Be prepared for a chilly experience, with minimum temperatures dipping as low as -23°C (-9°F) and occasionally reaching up to 6°C (43°F). Expect about 68 mm (2.7 in) of precipitation spread over 14 days, resulting in an overall high average humidity of 89%. Bundle up and stay dry!

December Temperature in Siikainen

In December in Siikainen, the average temperature is -2°C (29°F). The maximum can reach 6°C (43°F), while the minimum can dip as low as -23°C (-9°F). Travelers should be prepared for very cold conditions and dress warmly to fully enjoy their visit.

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

The chart illustrates December temperature patterns in Siikainen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siikainen, December typically has an average temperature of -2°C (29°F), with highs reaching up to 6°C (43°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec262430384960646052433629
Data source: Temperature data for Siikainen 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 Siikainen

In Siikainen in December, the precipitation amount is 68 mm (2.7 in) distributed over a period of 14 days.

December Precipitation Trends in Siikainen

The chart displays monthly precipitation patterns in Siikainen, 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 Siikainen, December typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec4346474342628310676816668
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siikainen

In Siikainen in December humidity is 89%. With an average temperature of -2°C (29°F), this humidity feels like a suffocating fog that clings to your skin, making outdoor adventures less enjoyable and giving travel a heavy and oppressive feel.

December Average Humidity in Siikainen

This chart illustrates the average monthly humidity levels in Siikainen, 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 Siikainen is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%89%85%77%78%78%79%86%90%91%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siikainen

In Siikainen 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 Siikainen.

Maximum UV Index Levels in Siikainen for December

The chart shows the monthly maximum UV Index (UVI) for Siikainen 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 Siikainen typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Siikainen 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 Siikainen Compares to Other Months

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

This table compares monthly weather conditions in Siikainen, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)42 mm (1.7 inches)92%low
February Weather-4°C (24°F)46 mm (1.8 inches)90%low
March Weather-1°C (30°F)47 mm (1.8 inches)89%moderate
April Weather3°C (38°F)43 mm (1.7 inches)85%moderate
May Weather9°C (49°F)42 mm (1.7 inches)77%moderate
June Weather16°C (61°F)62 mm (2.5 inches)78%high
July Weather18°C (64°F)83 mm (3.3 inches)78%high
August Weather15°C (60°F)106 mm (4.2 inches)79%moderate
September Weather11°C (52°F)76 mm (3.0 inches)86%moderate
October Weather6°C (43°F)81 mm (3.2 inches)90%low
November Weather2°C (36°F)65 mm (2.6 inches)91%low
December Weather-2°C (29°F)68 mm (2.7 inches)89%low

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