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December Weather in Bacau, Romania

Last updated: August 27, 2025

In December, the average temperature in Bacau, Romania hovers around 2°C (35°F). Expect a minimum of -11°C (13°F) and the possibility of reaching a maximum of 16°C (61°F). With an average precipitation of 53 mm (2.1 in) spread over 9 days, the atmosphere remains humid, with an average humidity level of 90%. Prepare for a chilly yet moist month!

December Temperature in Bacau

In December in Bacau, the average temperature is 2°C (35°F). Maximum temperatures can reach 16°C (61°F), while the minimum can drop as low as -11°C (13°F). Be sure to pack layers and prepare for a wide range of temperatures if you're traveling during this time.

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

The chart illustrates December temperature patterns in Bacau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bacau, December typically has an average temperature of 2°C (35°F), with highs reaching up to 16°C (61°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec303541516169717364534335
Data source: Temperature data for Bacau 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 Bacau

In Bacau in December, the total precipitation amount is 53 mm (2.1 in) spread over 9 days.

December Precipitation Trends in Bacau

The chart displays monthly precipitation patterns in Bacau, 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 Bacau, December typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec2634383551116623330363253
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bacau

In Bacau in December humidity is 90%. With an average temperature of 2°C (35°F), this humidity feels like a cold, damp blanket that clings to your skin, making outdoor activities uncomfortable and requiring extra layers to stay warm and dry while traveling.

December Average Humidity in Bacau

This chart illustrates the average monthly humidity levels in Bacau, 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 Bacau is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%88%86%79%73%73%69%56%62%81%89%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bacau

In Bacau 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 Bacau, you can visit Hourly UV Index in Bacau.

Maximum UV Index Levels in Bacau for December

The chart shows the monthly maximum UV Index (UVI) for Bacau 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 Bacau typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Bacau 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 Bacau Compares to Other Months

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

This table compares monthly weather conditions in Bacau, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)26 mm (1.0 inches)92%low
February Weather1°C (35°F)34 mm (1.3 inches)88%moderate
March Weather5°C (41°F)38 mm (1.5 inches)86%moderate
April Weather11°C (51°F)35 mm (1.4 inches)79%high
May Weather16°C (61°F)51 mm (2.0 inches)73%very high
June Weather21°C (70°F)116 mm (4.6 inches)73%very high
July Weather22°C (72°F)62 mm (2.4 inches)68%very high
August Weather23°C (73°F)33 mm (1.3 inches)56%very high
September Weather18°C (64°F)30 mm (1.2 inches)62%high
October Weather12°C (53°F)36 mm (1.4 inches)80%moderate
November Weather6°C (43°F)32 mm (1.3 inches)89%moderate
December Weather2°C (35°F)53 mm (2.1 inches)90%low

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