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December Weather in Haapajaervi, Finland

Last updated: August 23, 2025

In Haapajaervi, Finland, the average temperature in December hovers around -4°C (25°F). Expect the mercury to dip as low as -21°C (-5°F), while it can rise to a maximum of 5°C (41°F). Precipitation is notable, with approximately 50 mm (2.0 in) falling over 13 days. Additionally, the air is quite moist, boasting an average humidity of 98%.

December Temperature in Haapajaervi

In December in Haapajaervi, the average temperature is -4°C (25°F), with maximums reaching 5°C (41°F) and minimums dropping to as low as -21°C (-5°F). Travelers should prepare for cold conditions and pack warm clothing to enjoy their visit comfortably.

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

The chart illustrates December temperature patterns in Haapajaervi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Haapajaervi, December typically has an average temperature of -4°C (25°F), with highs reaching up to 5°C (41°F) and lows dropping to around -21°C (-5°F).
JanFebMarAprMayJunJulAugSepOctNovDec211927364759625848393225
Data source: Temperature data for Haapajaervi 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 Haapajaervi

In Haapajaervi in December, the precipitation amount is 50 mm (2.0 in), spread over 13 days.

December Precipitation Trends in Haapajaervi

The chart displays monthly precipitation patterns in Haapajaervi, 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 Haapajaervi, December typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec404038415956788576826250
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Haapajaervi

In Haapajaervi in December humidity is 98%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that clings to your skin, making every step feel more laborious as you navigate through the frosty air, dampening your spirits as well as your clothes.

December Average Humidity in Haapajaervi

This chart illustrates the average monthly humidity levels in Haapajaervi, 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 Haapajaervi is approximately 98%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec99%97%95%87%78%74%80%85%91%95%94%98%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Haapajaervi

In Haapajaervi 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 Haapajaervi.

Maximum UV Index Levels in Haapajaervi for December

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

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

This table compares monthly weather conditions in Haapajaervi, 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)99%low
February Weather-7°C (19°F)40 mm (1.6 inches)97%low
March Weather-3°C (27°F)38 mm (1.5 inches)95%low
April Weather2°C (36°F)41 mm (1.6 inches)87%moderate
May Weather8°C (47°F)59 mm (2.3 inches)78%moderate
June Weather15°C (59°F)56 mm (2.2 inches)74%high
July Weather17°C (62°F)78 mm (3.1 inches)80%high
August Weather14°C (58°F)85 mm (3.4 inches)85%moderate
September Weather9°C (49°F)76 mm (3.0 inches)91%moderate
October Weather4°C (39°F)82 mm (3.2 inches)95%low
November Weather0°C (32°F)62 mm (2.4 inches)94%low
December Weather-4°C (25°F)50 mm (2.0 inches)98%low

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