January Weather in Sumiainen, Finland

Last updated: August 23, 2025

In January, the average temperature in Sumiainen, Finland hovers around -6°C (22°F). During this month, temperatures can dip as low as -26°C (-15°F) and rise to a maximum of 7°C (45°F). You'll also experience 45 mm (1.8 in) of precipitation spread over approximately 12 days. To top it off, the average humidity is a notable 99%, ensuring a chilly and damp atmosphere.

January Temperature in Sumiainen

In January in Sumiainen, the average temperature is -6°C (22°F). Maximums can reach 7°C (45°F), while minimums can plummet to as low as -26°C (-15°F). Travelers should be prepared for a wide range of temperatures and pack appropriately for the cold.

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

The chart illustrates January temperature patterns in Sumiainen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumiainen, 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 -26°C (-15°F).

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

January Precipitation in Sumiainen

In Sumiainen in January, the precipitation amount is 45 mm (1.8 in) over the course of 12 days.

January Precipitation Trends in Sumiainen

The chart displays monthly precipitation patterns in Sumiainen, 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 Sumiainen, January typically receives around 45 mm (1.8 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 Sumiainen

In Sumiainen in January, humidity is 99%. With an average temperature of -6°C (22°F), this humidity feels like trudging through a dense fog, making every breath a chilling reminder of the cold, while the air clings heavily to your skin, creating a uniquely uncomfortable yet eerily beautiful atmosphere for traveling.

January Average Humidity in Sumiainen

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

In Sumiainen 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 Sumiainen.

Maximum UV Index Levels in Sumiainen for January

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

Data source: Sumiainen 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 Sumiainen Compares to Other Months

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

This table compares monthly weather conditions in Sumiainen, 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)	45 mm (1.8 inches)	99%	low
February Weather	-6°C (21°F)	41 mm (1.6 inches)	97%	low
March Weather	-3°C (27°F)	38 mm (1.5 inches)	95%	moderate
April Weather	2°C (35°F)	43 mm (1.7 inches)	87%	moderate
May Weather	8°C (48°F)	60 mm (2.4 inches)	78%	moderate
June Weather	15°C (60°F)	57 mm (2.3 inches)	74%	high
July Weather	17°C (63°F)	71 mm (2.8 inches)	80%	high
August Weather	15°C (60°F)	89 mm (3.5 inches)	85%	moderate
September Weather	10°C (50°F)	80 mm (3.2 inches)	91%	moderate
October Weather	5°C (41°F)	80 mm (3.1 inches)	95%	low
November Weather	1°C (34°F)	62 mm (2.4 inches)	94%	low
December Weather	-3°C (26°F)	62 mm (2.4 inches)	98%	low