December Weather in Vammala, Finland

Last updated: August 23, 2025

In December, the average temperature in Vammala, Finland hovers around -2°C (29°F). Expect chilly days, with minimums reaching -20°C (-3°F) and maximums peaking at 6°C (43°F). Precipitation is fairly common, with about 63 mm (2.5 in) falling over 13 days, contributing to a high average humidity of 95%. Dress warmly and be prepared for damp weather!

December Temperature in Vammala

In December in Vammala, the average temperature is -2°C (29°F). Maximum temperatures can reach 6°C (43°F), while the minimum can drop as low as -20°C (-3°F). It's advisable for travelers to prepare for chilly conditions and dress in layers to stay warm during their visit.

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

The chart illustrates December temperature patterns in Vammala, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vammala, 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 (-3°F).

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

December Precipitation in Vammala

In Vammala in December, the precipitation amount is 63 mm (2.5 in) spread over 13 days.

December Precipitation Trends in Vammala

The chart displays monthly precipitation patterns in Vammala, 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 Vammala, December typically receives around 63 mm (2.5 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 Vammala

In Vammala 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 Vammala

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

In Vammala 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 Vammala.

Maximum UV Index Levels in Vammala for December

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

Data source: Vammala 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 Vammala Compares to Other Months

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

This table compares monthly weather conditions in Vammala, 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)	45 mm (1.8 inches)	97%	low
February Weather	-4°C (24°F)	41 mm (1.6 inches)	95%	low
March Weather	-1°C (30°F)	43 mm (1.7 inches)	93%	moderate
April Weather	4°C (39°F)	42 mm (1.6 inches)	86%	moderate
May Weather	10°C (50°F)	54 mm (2.1 inches)	75%	moderate
June Weather	16°C (61°F)	65 mm (2.5 inches)	75%	high
July Weather	17°C (64°F)	80 mm (3.2 inches)	80%	high
August Weather	16°C (61°F)	84 mm (3.3 inches)	83%	moderate
September Weather	11°C (52°F)	60 mm (2.4 inches)	90%	moderate
October Weather	6°C (43°F)	75 mm (3.0 inches)	93%	low
November Weather	2°C (36°F)	56 mm (2.2 inches)	94%	low
December Weather	-2°C (29°F)	63 mm (2.5 inches)	95%	low