December Weather in Jaala, Finland

Last updated: August 23, 2025

In December, the average temperature in Jaala, Finland hovers around -2°C (28°F), with a chilly minimum that can plummet to -20°C (-4°F) and a maximum reaching 5°C (42°F). Expect precipitation to amount to 73 mm (2.9 in) over 15 days, complemented by an average humidity of a staggering 96%. Be prepared for a wet and frigid month!

December Temperature in Jaala

In December in Jaala, the average temperature is -2°C (28°F), with maximums reaching 5°C (42°F) and minimums dropping as low as -20°C (-4°F). Travelers should be prepared for a range of temperatures and dress warmly to enjoy the winter scenery.

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

The chart illustrates December temperature patterns in Jaala, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jaala, December typically has an average temperature of -2°C (28°F), with highs reaching up to 5°C (42°F) and lows dropping to around -20°C (-4°F).

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

December Precipitation in Jaala

In Jaala in December, the precipitation amount is 73 mm (2.9 in) over the course of 15 days.

December Precipitation Trends in Jaala

The chart displays monthly precipitation patterns in Jaala, 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 Jaala, December typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 15 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 Jaala

In Jaala in December humidity is 96%. With an average temperature of -2°C (28°F), this humidity feels like a suffocating blanket draped over you, making each breath feel heavy and cold, which can be quite challenging for traveling.

December Average Humidity in Jaala

This chart illustrates the average monthly humidity levels in Jaala, 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 Jaala is approximately 96%, 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 Jaala

In Jaala 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 Jaala.

Maximum UV Index Levels in Jaala for December

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

Data source: Jaala 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 Jaala Compares to Other Months

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

This table compares monthly weather conditions in Jaala, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	49 mm (1.9 inches)	98%	low
February Weather	-5°C (23°F)	49 mm (1.9 inches)	96%	low
March Weather	-2°C (29°F)	44 mm (1.7 inches)	93%	moderate
April Weather	3°C (38°F)	45 mm (1.8 inches)	87%	moderate
May Weather	10°C (50°F)	54 mm (2.1 inches)	75%	moderate
June Weather	16°C (61°F)	56 mm (2.2 inches)	74%	high
July Weather	18°C (64°F)	79 mm (3.1 inches)	80%	high
August Weather	16°C (61°F)	86 mm (3.4 inches)	85%	moderate
September Weather	11°C (52°F)	64 mm (2.5 inches)	90%	moderate
October Weather	6°C (43°F)	75 mm (3.0 inches)	94%	low
November Weather	2°C (36°F)	54 mm (2.1 inches)	94%	low
December Weather	-2°C (28°F)	73 mm (2.9 inches)	96%	low