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December Weather in Ristijaervi, Finland

Last updated: August 23, 2025

In December, the average temperature in Ristijaervi, Finland hovers around -5°C (23°F). Expect the mercury to dip as low as -22°C (-7°F), while occasionally reaching a maximum of 3°C (38°F). The weather brings along 66 mm (2.6 in) of precipitation over 17 days, with an astonishing average humidity of 100%.

December Temperature in Ristijaervi

In December in Ristijaervi, the average temperature is -5°C (23°F). Maximums can reach 3°C (38°F), while minimums can drop as low as -22°C (-7°F). Be sure to dress warmly and prepare for chilly conditions if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Ristijaervi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ristijaervi, December typically has an average temperature of -5°C (23°F), with highs reaching up to 3°C (38°F) and lows dropping to around -22°C (-7°F).
JanFebMarAprMayJunJulAugSepOctNovDec171624334457615747382922
Data source: Temperature data for Ristijaervi 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 Ristijaervi

In Ristijaervi in December, the precipitation amount is 66 mm (2.6 in) spread over 17 days.

December Precipitation Trends in Ristijaervi

The chart displays monthly precipitation patterns in Ristijaervi, 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 Ristijaervi, December typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec4743494356719210384928066
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Ristijaervi

In Ristijaervi in December, humidity is 100%. With an average temperature of -5°C (23°F), this humidity feels like a heavy, frigid blanket enveloping you, making each breath feel cold and damp, and leaving your skin clammy as you navigate the icy landscape.

December Average Humidity in Ristijaervi

This chart illustrates the average monthly humidity levels in Ristijaervi, 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 Ristijaervi is approximately 100%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec101%99%94%88%83%79%83%88%91%96%96%100%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Ristijaervi

In Ristijaervi 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 Ristijaervi.

Maximum UV Index Levels in Ristijaervi for December

The chart shows the monthly maximum UV Index (UVI) for Ristijaervi 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 Ristijaervi typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112356653211
Data source: Ristijaervi 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 Ristijaervi Compares to Other Months

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

This table compares monthly weather conditions in Ristijaervi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)47 mm (1.9 inches)101%low
February Weather-9°C (16°F)43 mm (1.7 inches)99%low
March Weather-5°C (24°F)49 mm (1.9 inches)94%low
April Weather1°C (34°F)43 mm (1.7 inches)88%moderate
May Weather7°C (44°F)55 mm (2.2 inches)83%moderate
June Weather14°C (58°F)71 mm (2.8 inches)79%high
July Weather16°C (61°F)92 mm (3.6 inches)83%high
August Weather14°C (57°F)103 mm (4.0 inches)87%moderate
September Weather9°C (48°F)84 mm (3.3 inches)91%moderate
October Weather3°C (38°F)92 mm (3.6 inches)96%low
November Weather-1°C (30°F)80 mm (3.2 inches)96%low
December Weather-5°C (23°F)66 mm (2.6 inches)100%low

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