January Weather in Karstula, Finland

Last updated: August 23, 2025

In January, the average temperature in Karstula, Finland hovers around -6°C (22°F). Expect chilling lows of -29°C (-20°F) and highs reaching 7°C (45°F). The region sees 44 mm (1.7 in) of precipitation over approximately 12 days, contributing to a notably high average humidity of 97%.

January Temperature in Karstula

In January in Karstula, the average temperature is -6°C (22°F). The maximum can reach 7°C (45°F), while the minimum can plummet to -29°C (-20°F). Travelers should prepare for extremely cold weather and pack accordingly for their visit.

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

The chart illustrates January temperature patterns in Karstula, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karstula, January typically has an average temperature of -6°C (22°F), with highs reaching up to 7°C (45°F) and lows dropping to around -29°C (-20°F).

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

January Precipitation in Karstula

In Karstula in January, the total precipitation amounts to 44 mm (1.7 in) over the course of 12 days.

January Precipitation Trends in Karstula

The chart displays monthly precipitation patterns in Karstula, 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 Karstula, January typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Karstula

In Karstula in January, humidity is 97%. With an average temperature of -6°C (22°F), this humidity feels like walking through a foggy breath of winter, where every step becomes a challenge and the cold seeps into your bones, making travel uncomfortable and exhausting.

January Average Humidity in Karstula

This chart illustrates the average monthly humidity levels in Karstula, 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 Karstula is approximately 97%, 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 Karstula

In Karstula 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 Karstula.

Maximum UV Index Levels in Karstula for January

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

Data source: Karstula 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 Karstula Compares to Other Months

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

This table compares monthly weather conditions in Karstula, showing how January’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)	97%	low
February Weather	-7°C (20°F)	43 mm (1.7 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 (60°F)	61 mm (2.4 inches)	74%	high
July Weather	16°C (62°F)	66 mm (2.6 inches)	79%	high
August Weather	14°C (58°F)	90 mm (3.6 inches)	82%	moderate
September Weather	9°C (49°F)	74 mm (2.9 inches)	89%	moderate
October Weather	4°C (40°F)	76 mm (3.0 inches)	93%	low
November Weather	0°C (33°F)	64 mm (2.5 inches)	93%	low
December Weather	-4°C (26°F)	59 mm (2.3 inches)	95%	low