January Weather in Ilomantsi, Finland

Last updated: August 23, 2025

In January, the average temperature in Ilomantsi, Finland hovers around -8°C (19°F), with extremes ranging from a frigid -31°C (-24°F) to a milder 5°C (42°F). This month experiences an average precipitation of 49 mm (1.9 in) spread over 13 days, contributing to a notably high average humidity of 99%. Stay warm and prepared for a chilly, damp winter!

January Temperature in Ilomantsi

In January in Ilomantsi, the average temperature is -8°C (19°F). Maximum temperatures can reach 5°C (42°F), while minimums can drop as low as -31°C (-24°F). Travelers should be prepared for extremely cold conditions and dress warmly when visiting during this time.

January Weather in Ilomantsi: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Ilomantsi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilomantsi, January typically has an average temperature of -8°C (19°F), with highs reaching up to 5°C (42°F) and lows dropping to around -31°C (-24°F).

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

January Precipitation in Ilomantsi

In Ilomantsi in January, the precipitation amount is 49 mm (1.9 in) over the course of 13 days.

January Precipitation Trends in Ilomantsi

The chart displays monthly precipitation patterns in Ilomantsi, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Ilomantsi, January typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 13 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Ilomantsi

In Ilomantsi in January humidity is 99%. With an average temperature of -8°C (19°F), this humidity feels like stepping into a thick fog that chills you to the bone, making outdoor travel uncomfortable and challenging as the dampness seeps into your clothes and freezes your breath.

January Average Humidity in Ilomantsi

This chart illustrates the average monthly humidity levels in Ilomantsi, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Ilomantsi is approximately 99%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Ilomantsi

In Ilomantsi in January, 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 Ilomantsi.

Maximum UV Index Levels in Ilomantsi for January

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

Data source: Ilomantsi January 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 January Weather in Ilomantsi Compares to Other Months

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

This table compares monthly weather conditions in Ilomantsi, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (19°F)	49 mm (1.9 inches)	99%	low
February Weather	-8°C (18°F)	50 mm (2.0 inches)	98%	low
March Weather	-4°C (25°F)	54 mm (2.1 inches)	95%	moderate
April Weather	1°C (35°F)	46 mm (1.8 inches)	88%	moderate
May Weather	9°C (48°F)	60 mm (2.4 inches)	79%	moderate
June Weather	15°C (60°F)	60 mm (2.3 inches)	76%	high
July Weather	17°C (62°F)	95 mm (3.7 inches)	83%	high
August Weather	15°C (59°F)	105 mm (4.1 inches)	89%	moderate
September Weather	9°C (49°F)	78 mm (3.1 inches)	91%	moderate
October Weather	4°C (40°F)	85 mm (3.4 inches)	95%	low
November Weather	0°C (31°F)	61 mm (2.4 inches)	95%	low
December Weather	-5°C (24°F)	71 mm (2.8 inches)	97%	low