January Weather in Petaejaevesi, Finland

Last updated: August 23, 2025

In January, the average temperature in Petaejaevesi, Finland hovers around -5°C (22°F). However, be prepared for extremes, as temperatures can plummet to a chilling -28°C (-17°F) or rise to a maximum of 8°C (46°F). During this month, expect about 47 mm (1.9 in) of precipitation spread over 12 days, with an astonishingly high average humidity of 99%. Dress warmly and stay dry!

January Temperature in Petaejaevesi

In January in Petaejaevesi, the average temperature is -5°C (22°F). The maximum can reach 8°C (46°F), while the minimum can drop to as low as -28°C (-17°F). Travelers should be prepared for frigid conditions and dress warmly when visiting during this time.

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

The chart illustrates January temperature patterns in Petaejaevesi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petaejaevesi, January typically has an average temperature of -5°C (22°F), with highs reaching up to 8°C (46°F) and lows dropping to around -28°C (-17°F).

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

January Precipitation in Petaejaevesi

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

January Precipitation Trends in Petaejaevesi

The chart displays monthly precipitation patterns in Petaejaevesi, 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 Petaejaevesi, 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 Petaejaevesi

In Petaejaevesi in January humidity is 99%. With an average temperature of -5°C (22°F), this humidity feels like walking through a dense fog that clings to your skin, making each breath feel heavy and every step a challenge, perfect for a surreal winter adventure but less than ideal for leisurely travel.

January Average Humidity in Petaejaevesi

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

In Petaejaevesi 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 Petaejaevesi.

Maximum UV Index Levels in Petaejaevesi for January

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

Data source: Petaejaevesi 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 Petaejaevesi Compares to Other Months

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

This table compares monthly weather conditions in Petaejaevesi, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (22°F)	47 mm (1.9 inches)	99%	low
February Weather	-6°C (21°F)	45 mm (1.8 inches)	97%	low
March Weather	-3°C (28°F)	43 mm (1.7 inches)	95%	moderate
April Weather	2°C (36°F)	47 mm (1.9 inches)	87%	moderate
May Weather	9°C (49°F)	63 mm (2.5 inches)	78%	moderate
June Weather	16°C (61°F)	58 mm (2.3 inches)	74%	high
July Weather	17°C (63°F)	70 mm (2.7 inches)	80%	high
August Weather	15°C (59°F)	93 mm (3.6 inches)	85%	moderate
September Weather	10°C (50°F)	73 mm (2.9 inches)	91%	moderate
October Weather	5°C (41°F)	76 mm (3.0 inches)	95%	low
November Weather	1°C (34°F)	65 mm (2.6 inches)	94%	low
December Weather	-3°C (26°F)	69 mm (2.7 inches)	98%	low