January Weather in Sahalahti, Finland

Last updated: August 23, 2025

In January, the average temperature in Sahalahti, Finland hovers around -4°C (25°F), with minimum lows plunging to -25°C (-12°F) and maximum highs reaching 7°C (45°F). This chilly month also brings about 47 mm (1.9 in) of precipitation over roughly 12 days, while the air remains notably damp, with an average humidity of 97%.

January Temperature in Sahalahti

In January in Sahalahti, the average temperature is -4°C (25°F). Maximums can reach 7°C (45°F), while minimums can plummet to as low as -25°C (-12°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for chilly conditions.

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

The chart illustrates January temperature patterns in Sahalahti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sahalahti, January typically has an average temperature of -4°C (25°F), with highs reaching up to 7°C (45°F) and lows dropping to around -25°C (-12°F).

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

January Precipitation in Sahalahti

In Sahalahti in January, the total precipitation amount reaches 47 mm (1.9 in) over the course of 12 days.

January Precipitation Trends in Sahalahti

The chart displays monthly precipitation patterns in Sahalahti, 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 Sahalahti, January typically receives around 47 mm (1.9 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 Sahalahti

In Sahalahti in January, humidity is 97%. With an average temperature of -4°C (25°F), this humidity feels like a bite of frost in the air, making every breath feel heavy and icy, leaving travelers feeling chilled to the bone as they navigate through the damp surroundings.

January Average Humidity in Sahalahti

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

In Sahalahti 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 Sahalahti.

Maximum UV Index Levels in Sahalahti for January

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

Data source: Sahalahti 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 Sahalahti Compares to Other Months

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

This table compares monthly weather conditions in Sahalahti, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	47 mm (1.9 inches)	97%	low
February Weather	-5°C (23°F)	40 mm (1.6 inches)	95%	low
March Weather	-2°C (29°F)	42 mm (1.7 inches)	93%	moderate
April Weather	3°C (37°F)	42 mm (1.7 inches)	86%	moderate
May Weather	9°C (48°F)	58 mm (2.3 inches)	75%	moderate
June Weather	15°C (59°F)	68 mm (2.7 inches)	75%	high
July Weather	17°C (63°F)	76 mm (3.0 inches)	80%	high
August Weather	16°C (60°F)	85 mm (3.3 inches)	83%	moderate
September Weather	11°C (52°F)	69 mm (2.7 inches)	90%	moderate
October Weather	6°C (43°F)	82 mm (3.2 inches)	93%	low
November Weather	2°C (36°F)	58 mm (2.3 inches)	94%	low
December Weather	-2°C (29°F)	66 mm (2.6 inches)	95%	low