January Weather in Lohja, Finland

Last updated: August 23, 2025

In Lohja, Finland, the average temperature in January hovers around -2°C (28°F). However, be prepared for extremes, with temperatures plummeting to a minimum of -22°C (-8°F) and occasionally reaching as high as 8°C (46°F). Additionally, expect 57 mm (2.3 in) of precipitation spread over 11 days, contributing to an average humidity of a staggering 97%. Perfect for those who appreciate a chilly, atmospheric winter!

January Temperature in Lohja

In January in Lohja, the average temperature is -2°C (28°F), with maximums reaching 8°C (46°F) and minimums dropping as low as -22°C (-8°F). Travelers should prepare for cold weather and pack accordingly when visiting during this time.

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

The chart illustrates January temperature patterns in Lohja, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lohja, January typically has an average temperature of -2°C (28°F), with highs reaching up to 8°C (46°F) and lows dropping to around -22°C (-8°F).

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

January Precipitation in Lohja

In Lohja in January, the total precipitation amount is 57 mm (2.3 in) over the course of 11 days.

January Precipitation Trends in Lohja

The chart displays monthly precipitation patterns in Lohja, 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 Lohja, January typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 11 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 Lohja

In Lohja in January, humidity is 97%. With an average temperature of -2°C (28°F), this humidity feels like a frigid fog that clings to your skin, making every step feel heavier and the cold air bite sharper; it can be quite challenging for traveling as you navigate the dampness that seeps into your clothes, leaving you feeling chilled and uncomfortable.

January Average Humidity in Lohja

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

In Lohja 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 Lohja.

Maximum UV Index Levels in Lohja for January

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

Data source: Lohja 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 Lohja Compares to Other Months

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

This table compares monthly weather conditions in Lohja, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	57 mm (2.3 inches)	97%	low
February Weather	-3°C (26°F)	49 mm (1.9 inches)	95%	low
March Weather	-1°C (31°F)	53 mm (2.1 inches)	93%	moderate
April Weather	3°C (39°F)	37 mm (1.5 inches)	86%	moderate
May Weather	10°C (50°F)	52 mm (2.0 inches)	75%	moderate
June Weather	16°C (61°F)	51 mm (2.0 inches)	75%	high
July Weather	18°C (64°F)	84 mm (3.3 inches)	80%	high
August Weather	16°C (62°F)	82 mm (3.2 inches)	83%	moderate
September Weather	12°C (54°F)	63 mm (2.5 inches)	90%	moderate
October Weather	7°C (45°F)	89 mm (3.5 inches)	93%	low
November Weather	3°C (38°F)	62 mm (2.5 inches)	94%	low
December Weather	-1°C (31°F)	74 mm (2.9 inches)	95%	low