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December Weather in Reisjaervi, Finland

Last updated: August 23, 2025

In Reisjaervi, Finland, the average temperature in December hovers around -4°C (25°F), with a minimum dipping as low as -21°C (-6°F) and a maximum climbing to 5°C (40°F). During this chilly month, expect about 51 mm (2.0 in) of precipitation over 13 days, with an average humidity level of 95%. Prepare for a damp, cold atmosphere!

December Temperature in Reisjaervi

In December in Reisjaervi, the average temperature is -4°C (25°F). Maximums can reach 5°C (40°F), while minimums can dip as low as -21°C (-6°F). Travelers should be prepared for cold conditions and pack appropriate winter clothing.

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

The chart illustrates December temperature patterns in Reisjaervi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Reisjaervi, December typically has an average temperature of -4°C (25°F), with highs reaching up to 5°C (40°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec211927354759625848393225
Data source: Temperature data for Reisjaervi 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 Reisjaervi

In Reisjaervi in December, the precipitation amount is 51 mm (2.0 in) spread over 13 days.

December Precipitation Trends in Reisjaervi

The chart displays monthly precipitation patterns in Reisjaervi, 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 Reisjaervi, December typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec404039446256779078856351
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Reisjaervi

In Reisjaervi in December humidity is 95%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that seeps into your bones, making outdoor travel uncomfortable and necessitating warm layers to combat the dampness.

December Average Humidity in Reisjaervi

This chart illustrates the average monthly humidity levels in Reisjaervi, 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 Reisjaervi is approximately 95%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%92%85%77%74%79%82%89%93%93%95%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Reisjaervi

In Reisjaervi 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 Reisjaervi.

Maximum UV Index Levels in Reisjaervi for December

The chart shows the monthly maximum UV Index (UVI) for Reisjaervi 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 Reisjaervi typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456653211
Data source: Reisjaervi 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 Reisjaervi Compares to Other Months

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

This table compares monthly weather conditions in Reisjaervi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)40 mm (1.6 inches)97%low
February Weather-7°C (20°F)40 mm (1.6 inches)95%low
March Weather-3°C (27°F)39 mm (1.5 inches)92%low
April Weather2°C (36°F)44 mm (1.7 inches)85%moderate
May Weather8°C (47°F)62 mm (2.4 inches)77%moderate
June Weather15°C (59°F)56 mm (2.2 inches)74%high
July Weather16°C (62°F)77 mm (3.0 inches)79%high
August Weather14°C (58°F)90 mm (3.5 inches)82%moderate
September Weather9°C (49°F)78 mm (3.1 inches)89%moderate
October Weather4°C (39°F)85 mm (3.4 inches)93%low
November Weather0°C (32°F)63 mm (2.5 inches)93%low
December Weather-4°C (25°F)51 mm (2.0 inches)95%low

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