December Weather in Nastola, Finland

Last updated: August 23, 2025

In December, the average temperature in Nastola, Finland hovers around -2°C (28°F). During this time, temperatures can dip as low as -20°C (-4°F) or rise to a maximum of 5°C (42°F). Expect about 72 mm (2.8 in) of precipitation over 15 days, coupled with a cozy average humidity of 96%. 🌧️

December Temperature in Nastola

In December in Nastola, the average temperature is -2°C (28°F), with maximums reaching 5°C (42°F) and minimums dropping as low as -20°C (-4°F). Travelers should be prepared for a range of temperatures and dress warmly to enjoy the winter scenery.

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

The chart illustrates December temperature patterns in Nastola, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nastola, December typically has an average temperature of -2°C (28°F), with highs reaching up to 5°C (42°F) and lows dropping to around -20°C (-4°F).

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

December Precipitation in Nastola

In Nastola in December, the total precipitation amount is 72 mm (2.8 in) over the course of 15 days.

December Precipitation Trends in Nastola

The chart displays monthly precipitation patterns in Nastola, 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 Nastola, December typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 15 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Nastola

In Nastola in December humidity is 96%. With an average temperature of -2°C (28°F), this humidity feels like a suffocating blanket draped over you, making each breath feel heavy and cold, which can be quite challenging for traveling.

December Average Humidity in Nastola

This chart illustrates the average monthly humidity levels in Nastola, 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 Nastola is approximately 96%, 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 Nastola

In Nastola 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 Nastola.

Maximum UV Index Levels in Nastola for December

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

Data source: Nastola 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 Nastola Compares to Other Months

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

This table compares monthly weather conditions in Nastola, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	49 mm (1.9 inches)	98%	low
February Weather	-5°C (24°F)	46 mm (1.8 inches)	96%	low
March Weather	-2°C (29°F)	44 mm (1.8 inches)	93%	moderate
April Weather	3°C (38°F)	47 mm (1.9 inches)	87%	moderate
May Weather	10°C (50°F)	54 mm (2.1 inches)	75%	moderate
June Weather	16°C (61°F)	62 mm (2.4 inches)	74%	high
July Weather	17°C (64°F)	77 mm (3.0 inches)	80%	high
August Weather	16°C (61°F)	84 mm (3.3 inches)	85%	moderate
September Weather	11°C (52°F)	61 mm (2.4 inches)	90%	moderate
October Weather	6°C (43°F)	77 mm (3.0 inches)	94%	low
November Weather	2°C (36°F)	54 mm (2.1 inches)	94%	low
December Weather	-2°C (28°F)	72 mm (2.8 inches)	96%	low