nomadseason

December Weather in Petaejaevesi, Finland

Last updated: August 23, 2025

In December, the average temperature in Petaejaevesi, Finland hovers around -3°C (26°F), with minimums dipping as low as -23°C (-9°F) and maximums reaching up to 5°C (40°F). Expect 69 mm (2.7 in) of precipitation over 15 days, coupled with a high average humidity of 98%—perfect for cozy, indoor activities!

December Temperature in Petaejaevesi

In December in Petaejaevesi, the average temperature is -3°C (26°F), with maximums reaching 5°C (40°F) and minimums dropping as low as -23°C (-9°F). Travelers should be prepared for extremely cold conditions and pack accordingly.

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

The chart illustrates December temperature patterns in Petaejaevesi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petaejaevesi, December typically has an average temperature of -3°C (26°F), with highs reaching up to 5°C (40°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec222127364861635950413326
Data source: Temperature data for Petaejaevesi generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Petaejaevesi

In Petaejaevesi in December, the precipitation amount is 69 mm (2.7 in) over the course of 15 days.

December Precipitation Trends in Petaejaevesi

The chart displays monthly precipitation patterns in Petaejaevesi, 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 Petaejaevesi, December typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec474543476358709373766569
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Petaejaevesi

In Petaejaevesi in December humidity is 98%. With an average temperature of -3°C (26°F), this humidity feels like a biting chill that creeps into your bones, making traveling uncomfortable and potentially hazardous as you navigate through the frosty air.

December Average Humidity in Petaejaevesi

This chart illustrates the average monthly humidity levels in Petaejaevesi, 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 Petaejaevesi 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 Petaejaevesi

In Petaejaevesi 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 Petaejaevesi.

Maximum UV Index Levels in Petaejaevesi for December

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

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

This table compares monthly weather conditions in Petaejaevesi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (22°F)47 mm (1.9 inches)99%low
February Weather-6°C (21°F)45 mm (1.8 inches)97%low
March Weather-3°C (28°F)43 mm (1.7 inches)95%moderate
April Weather2°C (36°F)47 mm (1.9 inches)87%moderate
May Weather9°C (49°F)63 mm (2.5 inches)78%moderate
June Weather16°C (61°F)58 mm (2.3 inches)74%high
July Weather17°C (63°F)70 mm (2.7 inches)80%high
August Weather15°C (59°F)93 mm (3.6 inches)85%moderate
September Weather10°C (50°F)73 mm (2.9 inches)91%moderate
October Weather5°C (41°F)76 mm (3.0 inches)95%low
November Weather1°C (34°F)65 mm (2.6 inches)94%low
December Weather-3°C (26°F)69 mm (2.7 inches)98%low

Compare Petaejaevesi's Climate with Cities Worldwide