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December Weather in Kostinbrod, Bulgaria

Last updated: August 22, 2025

In December, the average temperature in Kostinbrod, Bulgaria hovers around 1°C (34°F). Expect chilly conditions, with minimum temperatures dipping as low as -14°C (7°F) and peaking at a mild 13°C (55°F). This month also brings considerable precipitation, with 68 mm (2.7 in) falling over approximately 12 days, resulting in an average humidity of a damp 89%. Be prepared for wet and cool weather as you explore the region!

December Temperature in Kostinbrod

In December in Kostinbrod, the average temperature is 1°C (34°F). Maximums can reach 13°C (55°F), while minimums can drop as low as -14°C (7°F). Be sure to pack warm clothing if you plan to travel during this time, as the weather can vary significantly.

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

The chart illustrates December temperature patterns in Kostinbrod, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kostinbrod, December typically has an average temperature of 1°C (34°F), with highs reaching up to 13°C (55°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec283640485764686961514234
Data source: Temperature data for Kostinbrod generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Kostinbrod

In Kostinbrod in December, the precipitation amount is 68 mm (2.7 in) over the course of 12 days.

December Precipitation Trends in Kostinbrod

The chart displays monthly precipitation patterns in Kostinbrod, 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 Kostinbrod, December typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec554774506587683325443768
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kostinbrod

In Kostinbrod in December humidity is 89%. With an average temperature of 1°C (34°F), this humidity feels like a chilling dampness that seeps into your bones, making travel uncomfortable and requiring extra layers to combat the cold and moisture.

December Average Humidity in Kostinbrod

This chart illustrates the average monthly humidity levels in Kostinbrod, 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 Kostinbrod is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%85%83%71%73%67%68%50%59%79%87%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kostinbrod

In Kostinbrod in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Kostinbrod, you can visit Hourly UV Index in Kostinbrod.

Maximum UV Index Levels in Kostinbrod for December

The chart shows the monthly maximum UV Index (UVI) for Kostinbrod 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 Kostinbrod typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24779101097632
Data source: Kostinbrod 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 Kostinbrod Compares to Other Months

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

This table compares monthly weather conditions in Kostinbrod, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)55 mm (2.2 inches)89%low
February Weather2°C (36°F)47 mm (1.8 inches)85%moderate
March Weather5°C (40°F)74 mm (2.9 inches)83%high
April Weather9°C (49°F)50 mm (2.0 inches)71%high
May Weather14°C (57°F)65 mm (2.6 inches)73%very high
June Weather18°C (64°F)87 mm (3.4 inches)67%very high
July Weather20°C (68°F)67 mm (2.7 inches)68%very high
August Weather20°C (69°F)33 mm (1.3 inches)50%very high
September Weather16°C (61°F)25 mm (1.0 inches)59%high
October Weather10°C (51°F)44 mm (1.7 inches)79%high
November Weather6°C (42°F)37 mm (1.5 inches)87%moderate
December Weather1°C (34°F)68 mm (2.7 inches)89%low

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