December Weather in Vihti, Finland

Last updated: August 23, 2025

In Vihti, Finland, the average temperature in December hovers around -2°C (29°F). Expect chilly conditions, with minimums plummeting to -20°C (-4°F) and highs reaching up to 6°C (43°F). Total precipitation is 70 mm (2.7 in) over approximately 15 days, contributing to a high average humidity of 95%. Prepare for a wintry mix, perfect for cozy indoor activities!

December Temperature in Vihti

In December in Vihti, the average temperature is -2°C (29°F), with maximums reaching 6°C (43°F) and minimums dipping as low as -20°C (-4°F). It's advisable to dress warmly and prepare for cold conditions if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Vihti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vihti, December typically has an average temperature of -2°C (29°F), with highs reaching up to 6°C (43°F) and lows dropping to around -20°C (-4°F).

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

December Precipitation in Vihti

In Vihti in December, the precipitation amount is 70 mm (2.7 in) over a period of 15 days.

December Precipitation Trends in Vihti

The chart displays monthly precipitation patterns in Vihti, 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 Vihti, December typically receives around 70 mm (2.7 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 Vihti

In Vihti in December, humidity is 95%. With an average temperature of -2°C (29°F), this humidity feels like a cold, damp chill that seeps into your bones, making outdoor travel uncomfortable and necessitating extra layers to stay warm and dry.

December Average Humidity in Vihti

This chart illustrates the average monthly humidity levels in Vihti, 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 Vihti is approximately 95%, 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 Vihti

In Vihti 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 Vihti.

Maximum UV Index Levels in Vihti for December

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

Data source: Vihti 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 Vihti Compares to Other Months

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

This table compares monthly weather conditions in Vihti, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	54 mm (2.1 inches)	97%	low
February Weather	-4°C (25°F)	47 mm (1.8 inches)	95%	low
March Weather	-1°C (30°F)	50 mm (2.0 inches)	93%	moderate
April Weather	3°C (38°F)	43 mm (1.7 inches)	86%	moderate
May Weather	10°C (50°F)	59 mm (2.3 inches)	75%	moderate
June Weather	16°C (61°F)	61 mm (2.4 inches)	75%	high
July Weather	18°C (64°F)	89 mm (3.5 inches)	80%	high
August Weather	16°C (61°F)	83 mm (3.3 inches)	83%	moderate
September Weather	11°C (53°F)	65 mm (2.6 inches)	90%	moderate
October Weather	6°C (44°F)	82 mm (3.2 inches)	93%	low
November Weather	2°C (37°F)	56 mm (2.2 inches)	94%	low
December Weather	-2°C (29°F)	70 mm (2.7 inches)	95%	low