December Weather in Kyyjaervi, Finland

Last updated: August 23, 2025

During December, the average temperature in Kyyjaervi, Finland hovers around -4°C (26°F). However, be prepared for a range of temperatures, with minimums dropping to -23°C (-9°F) and maximums reaching up to 5°C (40°F). Precipitation is notable, with 54 mm (2.1 in) expected over 13 days, contributing to a high average humidity of 95%.

December Temperature in Kyyjaervi

In December in Kyyjaervi, the average temperature is -4°C (26°F). Maximum temperatures can reach 5°C (40°F), while minimums can drop as low as -23°C (-9°F). Travelers should be prepared for cold conditions and pack accordingly for both chilly days and much colder nights.

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

The chart illustrates December temperature patterns in Kyyjaervi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kyyjaervi, December typically has an average temperature of -4°C (26°F), with highs reaching up to 5°C (40°F) and lows dropping to around -23°C (-9°F).

Data source: Temperature data for Kyyjaervi generated using information from the Copernicus Climate Change Service.

December Precipitation in Kyyjaervi

In Kyyjaervi in December, the precipitation amount is 54 mm (2.1 in), falling over the course of 13 days.

December Precipitation Trends in Kyyjaervi

The chart displays monthly precipitation patterns in Kyyjaervi, 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 Kyyjaervi, December typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Kyyjaervi

In Kyyjaervi in December humidity is 95%. With average temperature -4°C (26°F), this humidity feels like a chilling fog that wraps around you, making even the simplest outdoor activities feel arduous and uncomfortable for traveling.

December Average Humidity in Kyyjaervi

This chart illustrates the average monthly humidity levels in Kyyjaervi, 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 Kyyjaervi is approximately 95%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kyyjaervi

In Kyyjaervi 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 Kyyjaervi.

Maximum UV Index Levels in Kyyjaervi for December

The chart shows the monthly maximum UV Index (UVI) for Kyyjaervi 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 Kyyjaervi typically reaches 1, which falls under the low exposure category.

Data source: Kyyjaervi 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 Kyyjaervi Compares to Other Months

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

This table compares monthly weather conditions in Kyyjaervi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	42 mm (1.7 inches)	97%	low
February Weather	-7°C (20°F)	41 mm (1.6 inches)	95%	low
March Weather	-3°C (27°F)	41 mm (1.6 inches)	92%	moderate
April Weather	2°C (35°F)	46 mm (1.8 inches)	85%	moderate
May Weather	8°C (47°F)	64 mm (2.5 inches)	77%	moderate
June Weather	15°C (59°F)	61 mm (2.4 inches)	74%	high
July Weather	16°C (62°F)	72 mm (2.8 inches)	79%	high
August Weather	14°C (58°F)	92 mm (3.6 inches)	82%	moderate
September Weather	9°C (49°F)	78 mm (3.1 inches)	89%	moderate
October Weather	4°C (40°F)	82 mm (3.2 inches)	93%	low
November Weather	0°C (33°F)	64 mm (2.5 inches)	93%	low
December Weather	-4°C (26°F)	54 mm (2.1 inches)	95%	low