December Weather in Viitasaari, Finland

Last updated: August 23, 2025

In December, the average temperature in Viitasaari, Finland hovers around -4°C (26°F), with potential extremes ranging from a chilly -21°C (-5°F) to a mild 4°C (40°F). Expect 60 mm (2.4 in) of precipitation spread over 14 days, contributing to an average humidity of a stunning 98%. Prepare for a frosty atmosphere!

December Temperature in Viitasaari

In December in Viitasaari, the average temperature is -4°C (26°F). Maximums can reach 4°C (40°F), and minimums can be as low as -21°C (-5°F). If you're traveling during this time, be prepared for cold temperatures and pack accordingly to stay warm and comfortable.

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

The chart illustrates December temperature patterns in Viitasaari, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Viitasaari, December typically has an average temperature of -4°C (26°F), with highs reaching up to 4°C (40°F) and lows dropping to around -21°C (-5°F).

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

December Precipitation in Viitasaari

In Viitasaari in December, the precipitation amount is 60 mm (2.4 in) spread over 14 days.

December Precipitation Trends in Viitasaari

The chart displays monthly precipitation patterns in Viitasaari, 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 Viitasaari, December typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Viitasaari

In Viitasaari in December humidity is 98%. With an average temperature of -4°C (26°F), this humidity feels like a bone-chilling embrace, making it difficult to enjoy outdoor activities and travel comfortably.

December Average Humidity in Viitasaari

This chart illustrates the average monthly humidity levels in Viitasaari, 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 Viitasaari is approximately 98%, 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 Viitasaari

In Viitasaari 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 Viitasaari.

Maximum UV Index Levels in Viitasaari for December

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

Data source: Viitasaari 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 Viitasaari Compares to Other Months

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

This table compares monthly weather conditions in Viitasaari, 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)	44 mm (1.7 inches)	99%	low
February Weather	-7°C (20°F)	41 mm (1.6 inches)	97%	low
March Weather	-3°C (27°F)	38 mm (1.5 inches)	95%	moderate
April Weather	2°C (35°F)	44 mm (1.7 inches)	87%	moderate
May Weather	8°C (47°F)	61 mm (2.4 inches)	78%	moderate
June Weather	15°C (60°F)	57 mm (2.3 inches)	74%	high
July Weather	17°C (63°F)	75 mm (3.0 inches)	80%	high
August Weather	15°C (59°F)	89 mm (3.5 inches)	85%	moderate
September Weather	10°C (50°F)	81 mm (3.2 inches)	91%	moderate
October Weather	5°C (41°F)	83 mm (3.3 inches)	95%	low
November Weather	1°C (33°F)	64 mm (2.5 inches)	94%	low
December Weather	-4°C (26°F)	60 mm (2.4 inches)	98%	low