December Weather in Iisalmi, Finland

Last updated: August 23, 2025

In December, the average temperature in Iisalmi, Finland hovers around -4°C (24°F), with a chill that can plunge as low as -22°C (-8°F) and reach a milder maximum of 4°C (40°F). Expect a precipitation amount of 65 mm (2.6 in) spread over 15 days, contributing to a damp climate, with an average humidity of 98%. Stay warm and prepared for a true winter experience!

December Temperature in Iisalmi

In December in Iisalmi, the average temperature is -4°C (24°F), with maximums reaching 4°C (40°F) and minimums plummeting to -22°C (-8°F). Travelers should prepare for cold weather and dress in layers to stay warm during their visit.

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

The chart illustrates December temperature patterns in Iisalmi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iisalmi, December typically has an average temperature of -4°C (24°F), with highs reaching up to 4°C (40°F) and lows dropping to around -22°C (-8°F).

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

December Precipitation in Iisalmi

In Iisalmi in December, the total precipitation amount reaches 65 mm (2.6 in) over the course of 15 days.

December Precipitation Trends in Iisalmi

The chart displays monthly precipitation patterns in Iisalmi, 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 Iisalmi, December typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 15 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 Iisalmi

In Iisalmi in December humidity is 98%. With an average temperature of -4°C (24°F), this humidity feels like an icy mist that clings to your skin, making it uncomfortable for traveling and causing everything to feel damp and frosty, as if you are enveloped in a chill that cuts through even the thickest layers of clothing.

December Average Humidity in Iisalmi

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

In Iisalmi 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 Iisalmi.

Maximum UV Index Levels in Iisalmi for December

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

Data source: Iisalmi 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 Iisalmi Compares to Other Months

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

This table compares monthly weather conditions in Iisalmi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	48 mm (1.9 inches)	99%	low
February Weather	-8°C (18°F)	44 mm (1.7 inches)	97%	low
March Weather	-4°C (26°F)	44 mm (1.7 inches)	95%	low
April Weather	2°C (35°F)	46 mm (1.8 inches)	87%	moderate
May Weather	8°C (47°F)	56 mm (2.2 inches)	78%	moderate
June Weather	15°C (59°F)	70 mm (2.8 inches)	74%	high
July Weather	17°C (63°F)	88 mm (3.5 inches)	80%	high
August Weather	15°C (58°F)	101 mm (4.0 inches)	85%	moderate
September Weather	9°C (49°F)	85 mm (3.4 inches)	91%	moderate
October Weather	4°C (40°F)	88 mm (3.5 inches)	95%	low
November Weather	0°C (32°F)	77 mm (3.0 inches)	94%	low
December Weather	-4°C (24°F)	65 mm (2.6 inches)	98%	low