January Weather in Kotka, Finland

Last updated: August 23, 2025

In January, the average temperature in Kotka, Finland hovers around -3°C (27°F), with lows plunging to -23°C (-10°F) and highs peaking at 7°C (45°F). Expect around 55 mm (2.2 in) of precipitation over approximately 12 days, coupled with an impressive average humidity of 98%. Prepare for a chilly and damp month!

January Temperature in Kotka

In January in Kotka, the average temperature is -3°C (27°F). The maximum can reach 7°C (45°F), while the minimum can drop to as low as -23°C (-10°F). Be sure to dress warmly and prepare for chilly conditions if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Kotka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kotka, January typically has an average temperature of -3°C (27°F), with highs reaching up to 7°C (45°F) and lows dropping to around -23°C (-10°F).

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

January Precipitation in Kotka

In Kotka in January, the total precipitation amount is 55 mm (2.2 in) over a span of 12 days.

January Precipitation Trends in Kotka

The chart displays monthly precipitation patterns in Kotka, 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 Kotka, January typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 12 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 Kotka

In Kotka in January, humidity is 98%. With an average temperature of -3°C (27°F), this humidity feels like walking through a damp fog, making every breath feel heavier and the chill slice deeper into your bones, creating a uniquely uncomfortable travel experience.

January Average Humidity in Kotka

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

In Kotka 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 Kotka.

Maximum UV Index Levels in Kotka for January

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

Data source: Kotka 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 Kotka Compares to Other Months

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

This table compares monthly weather conditions in Kotka, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	55 mm (2.2 inches)	98%	low
February Weather	-4°C (25°F)	55 mm (2.2 inches)	96%	low
March Weather	-1°C (30°F)	49 mm (1.9 inches)	93%	moderate
April Weather	4°C (39°F)	43 mm (1.7 inches)	87%	moderate
May Weather	10°C (50°F)	48 mm (1.9 inches)	75%	moderate
June Weather	16°C (61°F)	48 mm (1.9 inches)	74%	high
July Weather	18°C (64°F)	75 mm (3.0 inches)	80%	high
August Weather	17°C (62°F)	88 mm (3.5 inches)	85%	moderate
September Weather	12°C (54°F)	66 mm (2.6 inches)	90%	moderate
October Weather	7°C (45°F)	86 mm (3.4 inches)	94%	low
November Weather	3°C (38°F)	66 mm (2.6 inches)	94%	low
December Weather	-1°C (30°F)	81 mm (3.2 inches)	96%	low