December Weather in Kostroma, Russian Federation

Last updated: August 27, 2025

In December, the average temperature in Kostroma, Russian Federation hovers around -6°C (22°F). However, temperatures can dip as low as -29°C (-21°F), with highs reaching up to 7°C (45°F). This month also sees an average precipitation of 51 mm (2.0 in) spread over 12 days, contributing to a notable average humidity of 92%.

December Temperature in Kostroma

In December in Kostroma, the average temperature is -6°C (22°F), with maximums reaching 7°C (45°F) and minimums plummeting to -29°C (-21°F). It's essential to pack warm clothing and be prepared for potentially extreme cold if you plan to visit during this time.

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

The chart illustrates December temperature patterns in Kostroma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kostroma, December typically has an average temperature of -6°C (22°F), with highs reaching up to 7°C (45°F) and lows dropping to around -29°C (-21°F).

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

December Precipitation in Kostroma

In Kostroma in December, the precipitation amount is 51 mm (2.0 in) spread over 12 days.

December Precipitation Trends in Kostroma

The chart displays monthly precipitation patterns in Kostroma, 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 Kostroma, December typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 12 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 Kostroma

In Kostroma in December, humidity is 92%. With an average temperature of -6°C (22°F), this humidity feels like a chilly fog enveloping you, making each breath feel heavy and damp, which can be quite uncomfortable for traveling.

December Average Humidity in Kostroma

This chart illustrates the average monthly humidity levels in Kostroma, 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 Kostroma is approximately 92%, 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 Kostroma

In Kostroma 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 Kostroma.

Maximum UV Index Levels in Kostroma for December

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

Data source: Kostroma 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 Kostroma Compares to Other Months

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

This table compares monthly weather conditions in Kostroma, 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 (19°F)	45 mm (1.8 inches)	99%	low
February Weather	-7°C (20°F)	54 mm (2.1 inches)	97%	low
March Weather	-3°C (28°F)	44 mm (1.7 inches)	93%	moderate
April Weather	4°C (40°F)	47 mm (1.9 inches)	84%	moderate
May Weather	12°C (53°F)	61 mm (2.4 inches)	72%	moderate
June Weather	16°C (62°F)	62 mm (2.5 inches)	73%	high
July Weather	18°C (65°F)	84 mm (3.3 inches)	76%	high
August Weather	17°C (62°F)	71 mm (2.8 inches)	77%	high
September Weather	11°C (52°F)	77 mm (3.0 inches)	89%	moderate
October Weather	6°C (43°F)	74 mm (2.9 inches)	91%	low
November Weather	0°C (32°F)	64 mm (2.5 inches)	94%	low
December Weather	-6°C (22°F)	51 mm (2.0 inches)	92%	low