December Weather in Joroinen, Finland

Last updated: August 23, 2025

In December, the average temperature in Joroinen, Finland hovers around -4°C (26°F). Expect chilly conditions with a minimum plunge to -23°C (-8°F) and a maximum of 4°C (39°F). Be prepared for some damp days, as precipitation averages 67 mm (2.6 in) spread over 15 days, contributing to an impressive 98% humidity level.

December Temperature in Joroinen

In December in Joroinen, the average temperature is -4°C (26°F). Maximums can reach 4°C (39°F), while minimums can drop to as low as -23°C (-8°F). Be prepared for crisp conditions and dress warmly to make the most of your travel experience.

December Weather in Joroinen: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Joroinen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Joroinen, December typically has an average temperature of -4°C (26°F), with highs reaching up to 4°C (39°F) and lows dropping to around -23°C (-8°F).

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

December Precipitation in Joroinen

In Joroinen in December, the precipitation amount is 67 mm (2.6 in) over the course of 15 days.

December Precipitation Trends in Joroinen

The chart displays monthly precipitation patterns in Joroinen, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Joroinen, December typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 15 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Joroinen

In Joroinen in December humidity is 98%. With an average temperature of -4°C (26°F), this humidity feels like a bone-chilling embrace, making it difficult to enjoy outdoor activities and travel comfortably.

December Average Humidity in Joroinen

This chart illustrates the average monthly humidity levels in Joroinen, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Joroinen is approximately 98%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Joroinen

In Joroinen in December, 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 Joroinen.

Maximum UV Index Levels in Joroinen for December

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

Data source: Joroinen December 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 December Weather in Joroinen Compares to Other Months

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

This table compares monthly weather conditions in Joroinen, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	48 mm (1.9 inches)	99%	low
February Weather	-6°C (21°F)	42 mm (1.7 inches)	98%	low
March Weather	-3°C (27°F)	44 mm (1.7 inches)	95%	moderate
April Weather	2°C (36°F)	44 mm (1.7 inches)	87%	moderate
May Weather	9°C (49°F)	58 mm (2.3 inches)	78%	moderate
June Weather	16°C (61°F)	63 mm (2.5 inches)	75%	high
July Weather	17°C (63°F)	82 mm (3.2 inches)	83%	high
August Weather	15°C (60°F)	84 mm (3.3 inches)	88%	moderate
September Weather	10°C (51°F)	77 mm (3.0 inches)	92%	moderate
October Weather	5°C (42°F)	73 mm (2.9 inches)	95%	low
November Weather	1°C (34°F)	61 mm (2.4 inches)	94%	low
December Weather	-4°C (26°F)	67 mm (2.6 inches)	98%	low