December Weather in Rantsila, Finland

Last updated: August 23, 2025

In December, the average temperature in Rantsila, Finland hovers around -4°C (24°F). While the mercury can dip as low as -23°C (-9°F), it may peak at 5°C (41°F). Expect 52 mm (2.0 in) of precipitation over 13 days, and be prepared for a chilly environment with an average humidity of a striking 99%.

December Temperature in Rantsila

In December in Rantsila, the average temperature is -4°C (24°F). The maximum can reach 5°C (41°F), and the minimum can be as low as -23°C (-9°F). It's advisable to pack warm clothing if you plan to visit during this time.

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

The chart illustrates December temperature patterns in Rantsila, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rantsila, December typically has an average temperature of -4°C (24°F), with highs reaching up to 5°C (41°F) and lows dropping to around -23°C (-9°F).

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

December Precipitation in Rantsila

In Rantsila in December, the total precipitation amount is 52 mm (2.0 in) over the course of 13 days.

December Precipitation Trends in Rantsila

The chart displays monthly precipitation patterns in Rantsila, 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 Rantsila, December typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 13 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 Rantsila

In Rantsila in December, humidity is 99%. With an average temperature of -4°C (24°F), this humidity feels like a frozen fog enveloping you, making every step outside feel like a struggle as the cold dampness seeps into your bones, turning even the simplest of travel plans into a daunting adventure.

December Average Humidity in Rantsila

This chart illustrates the average monthly humidity levels in Rantsila, 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 Rantsila is approximately 99%, 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 Rantsila

In Rantsila 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 Rantsila.

Maximum UV Index Levels in Rantsila for December

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

Data source: Rantsila 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 Rantsila Compares to Other Months

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

This table compares monthly weather conditions in Rantsila, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	39 mm (1.5 inches)	100%	low
February Weather	-8°C (18°F)	38 mm (1.5 inches)	98%	low
March Weather	-4°C (26°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 (47°F)	56 mm (2.2 inches)	81%	moderate
June Weather	14°C (58°F)	58 mm (2.3 inches)	77%	high
July Weather	16°C (62°F)	89 mm (3.5 inches)	79%	high
August Weather	14°C (58°F)	93 mm (3.7 inches)	84%	moderate
September Weather	9°C (49°F)	76 mm (3.0 inches)	90%	moderate
October Weather	4°C (39°F)	79 mm (3.1 inches)	95%	low
November Weather	-1°C (31°F)	62 mm (2.4 inches)	95%	low
December Weather	-4°C (24°F)	52 mm (2.0 inches)	99%	low