December Weather in Bucharest, Romania

Last updated: August 27, 2025

Bucharest in December offers a chilly yet captivating climate, where temperatures swing between a balmy 15°C (60°F) and a brisk -9°C (16°F), with an average hovering around 3°C (37°F). The city experiences a moderate 63 mm (2.5 in) of precipitation over 11 days, lending a touch of winter charm to the festive season. With humidity levels reaching 88%, the air can feel particularly crisp, making it a perfect time to embrace warm beverages and cozy gatherings. Visitors are encouraged to prepare for variable weather while enjoying the picturesque beauty that December brings to Romania's vibrant capital.

December Temperature in Bucharest

As December settles in Bucharest, the city experiences a chill that marks the heart of winter. The temperatures drop significantly, with lows reaching -9°C (16°F), while average daytime temperatures hover around a brisk 3°C (37°F). Despite the cold, the maximum temperatures can still reach a mild 15°C (60°F), offering occasional reprieves from the frost. This month signifies a transition into deeper winter, with a stark contrast to the milder temperatures of autumn. Visitors can expect a wintry atmosphere adorned with the festive spirit, making it a charming time to explore Romania's capital amidst its seasonal chill.

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

The chart illustrates December temperature patterns in Bucharest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bucharest, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec323743546371747767554537
Data source: Temperature data for Bucharest generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Bucharest

In December, Bucharest experiences a notable uptick in precipitation, recording 63 mm (2.5 in) over 11 days. This marks a consistent trend of increasing rainfall as the year draws to a close, contrasting with the lighter, drier months earlier in the autumn. The December figures highlight a shift from the relative parchedness of summer, where drought-prone months like August and September reported minimal rainfall. Following this pattern, December serves as a bridge into the wetter winter season, reflecting the city's evolving climate rhythms. With its higher rainfall, residents can expect a cozy, albeit damp, end to the year, setting the stage for the winter months ahead.

December Precipitation Trends in Bucharest

The chart displays monthly precipitation patterns in Bucharest, 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 Bucharest, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec4043614469115903323704363
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Bucharest

In Bucharest, Romania, December marks a notable return to high humidity levels, sitting at 88%, mirroring the conditions of January. This upward trend from the drier summer months, where humidity drops to as low as 48% in August, reflects the seasonal shift towards cooler temperatures. As the year progresses, humidity steadily rises from 71% in May to 87% in November, culminating in the winter months. December's dampness is influenced by the colder climate, creating a cozy yet sometimes chilly atmosphere as residents experience the moisture-laden air characteristic of the winter season. This consistent spike in humidity serves as a reminder of the cyclical nature of Bucharest’s weather patterns, providing a rich backdrop for the festive month ahead.

December Average Humidity in Bucharest

This chart illustrates the average monthly humidity levels in Bucharest, 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 Bucharest is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%85%82%73%71%70%66%48%57%79%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bucharest

As December arrives in Bucharest, Romania, the UV Index drops to a low level of 2, allowing residents and visitors to bask in the winter sun with less concern for sunburn, with a burn time of approximately 45 minutes. This decrease marks a notable shift from the peak summer months, where the index soared to 9 during July and June, indicating very high exposure levels that required careful sun protection. The gradual decline throughout the year—from 8 in May to merely 2 in December—highlights a seasonal pattern where UV radiation significantly diminishes. As you enjoy outdoor activities during this cozy month, remember to stay informed about the UV levels by checking the Bucharest UV Index for safe sun exposure.

Maximum UV Index Levels in Bucharest for December

The chart shows the monthly maximum UV Index (UVI) for Bucharest 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 Bucharest typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Bucharest 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.

December Sunshine in Bucharest

As December arrives in Bucharest, the city experiences a gentle decline in sunshine hours, totaling 191 hours for the month. This figure, while lower than the vibrant peak of summer with its impressive 425 hours in July, reflects a gradual transition from the brighter days of autumn, where September boasted 343 hours. The trend shows a steady progression from the sun-filled extravagance of long summer days, through a colorful fall, ultimately settling into the softer light of winter. Despite the increased cloud cover typical of December, the city remains bathed in a delicate glow, reminding residents and visitors alike that even in the heart of winter, Bucharest holds onto a sliver of daylight, setting the stage for the festive holiday cheer.

Monthly Sunshine Duration in Bucharest: December Highlighted

The December sunshine duration represents the total number of hours Bucharest experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec169h231h293h346h398h405h425h406h343h288h215h191h
Data source: Bucharest December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bucharest During December

In Bucharest, Romania, December ushers in cooler temperatures and a marked decrease in sunny days, with a mere 23% chance of sunshine. This is a notable drop compared to the months leading up to it, where the likelihood of enjoying sunny skies gradually increased from 27% in January to a peak of 70% in July and August. As autumn transitions to winter, the trend shows a consistent decline in sunlight, reflecting the seasonal shift that leaves this vibrant city shrouded in overcast skies. While December offers a festive atmosphere, those hoping for sunshine may find the odds stacked against them, making cozy indoor activities a more realistic expectation during this time of year.

Percentage of Sunny Days in December in Bucharest

The chart illustrates the percentage of sunny days in Bucharest throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Bucharest experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%36%42%41%41%43%70%70%59%39%38%23%
Data source: Bucharest December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bucharest in December

In Bucharest, Romania, December marks the height of winter, and daylight hours dip to their lowest point of the year at just 8 hours. This reduction in sunlight follows a gradual decline from a peak of 15 hours in the lively summer months of June and July. As the year unfolds, the city witnesses a steady decrease in daylight, with November having 9 hours illuminating its streets before the arrival of winter. However, the seasonal ebb and flow of daylight begins anew with the promise of longer days on the horizon, signaling the approach of spring as daylight gradually increases in the coming months, reaching 10 hours by February. This cyclical pattern of daylight not only shapes daily life in the city but also sets the tone for the changing seasons, wrapping Bucharest in the unique charm of winter each December.

Average Daylight Hours in Bucharest for December

The chart illustrates the variation in daylight duration in Bucharest throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 14m10h 26m11h 56m13h 29m14h 48m15h 29m15h 7m13h 57m12h 28m10h 56m9h 34m8h 52m
Data source: Bucharest daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Bucharest

As December settles over Bucharest, the average wind speed hovers around 2.7 m/s (6 mph), a gentle reminder that winter is on the horizon. Following a notable resurgence in October, where winds picked up to 3.0 m/s (7 mph), December's breezes maintain a consistent yet subdued rhythm, reflecting the city's transition into the colder months. This slight increase from November's 2.4 m/s (5 mph) suggests a gradual shift in atmospheric conditions as winter approaches. Overall, the winds in December encapsulate a quiet strength, invoking a sense of anticipation as the days grow shorter and the chill of winter truly begins to embrace the Romanian capital.

Average December Wind Speed in Bucharest

The chart displays monthly wind speed patterns in Bucharest, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.02.72.72.62.72.02.42.32.63.02.42.7 m/s
Data source: Bucharest December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Bucharest Compares to Other Months

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

December and January present a stark contrast in temperature while sharing similar humidity levels. In December, temperatures range from a minimum of -9°C (16°F) to an average of 3°C (37°F), peaking at 15°C (60°F), along with 63 mm (2.5 in) of precipitation over 11 days. In comparison, January is notably colder, with temperatures dropping to a minimum of -23°C (-9°F) and averaging around 0°C (32°F), although it maintains the same maximum of 15°C (59°F) as December. Precipitation also decreases significantly to 40 mm (1.6 in) across just 7 days. For a detailed overview of January weather in Bucharest, you can check Bucharest weather in January.

In December, the weather typically features a minimum temperature of -9°C (16°F) and averages around 3°C (37°F), with a maximum reaching 15°C (60°F). This month experiences an average of 63 mm (2.5 in) of precipitation over about 11 days, combined with high humidity levels at 88%.

In contrast, February sees even colder lows, with temperatures dropping as low as -14°C (6°F), although it can warm up to a maximum of 21°C (69°F), maintaining the same average of 3°C (37°F). Precipitation decreases to 43 mm (1.7 in) over just 8 days and humidity slightly lowers to 85%.

For more detailed information on the weather patterns in February, you can check out Bucharest weather in February.

December weather in Bucharest features chilly temperatures, with a minimum reaching -9°C (16°F) and an average of 3°C (37°F). Despite the relatively mild maximum of 15°C (60°F), the month is characterized by high humidity at 88% and approximately 63 mm (2.5 in) of precipitation over 11 days. In contrast, March sees a broader temperature range, with minimums dipping to -19°C (-2°F) but averaging slightly warmer at 6°C (44°F). The maximum can reach a pleasant 25°C (77°F), as humidity decreases to 82% and precipitation totals around 61 mm (2.4 in) across 9 days. For a more detailed look at the weather conditions in March, visit Bucharest weather in March.

December and April weather show a marked contrast in both temperature and humidity. In December, temperatures range from a chilly -9°C (16°F) at night to a milder 15°C (60°F) during the day, with an average of around 3°C (37°F). The month experiences significant humidity at 88% and sees about 63 mm (2.5 in) of precipitation over 11 days. In contrast, April offers much milder conditions, where nighttime lows dip to -1°C (30°F) and daytime highs can soar to 29°C (84°F), averaging 12°C (54°F). The humidity in April is lower at 73%, and precipitation is reduced to 44 mm (1.7 in) over just 7 days. For more details, check Bucharest weather in April.

In December, temperatures can drop as low as -9°C (16°F), with an average of 3°C (37°F) and a maximum reaching only 15°C (60°F). The month also sees significant humidity at 88%, coupled with 63 mm (2.5 in) of precipitation over 11 days. In contrast, May brings a much warmer climate, with temperatures ranging from a minimum of 4°C (39°F) to an average of 17°C (63°F) and a maximum of 31°C (88°F). Although May experiences slightly higher precipitation at 69 mm (2.7 in) over the same number of rainy days, the humidity drops to a more comfortable 71%. For more detailed insights into May's weather, you can check Bucharest weather in May.

December and June present striking contrasts in weather. In December, temperatures can drop as low as -9°C (16°F), with an average of 3°C (37°F) and a maximum of 15°C (60°F). The month experiences 63 mm (2.5 in) of precipitation over approximately 11 days, coupled with high humidity at 88%. In contrast, June boasts much milder conditions, with minimum temperatures around 7°C (46°F) and averages reaching 22°C (71°F), peaking at a scorching 37°C (99°F). Rainfall increases to 115 mm (4.5 in) spread across 15 days, but the humidity is lower at 70%. For more information, visit Bucharest weather in June.

December and July present stark contrasts in weather. December experiences temperatures ranging from a chilling -9°C (16°F) at night to a mild 15°C (60°F) during the day, with an average around 3°C (37°F). The month sees about 63 mm (2.5 in) of precipitation over 11 days, accompanied by high humidity levels at 88%. In contrast, July boasts much warmer conditions, with minimum temperatures of 12°C (54°F) and maximums reaching 38°C (100°F), averaging around 24°C (75°F). Although precipitation in July is slightly higher at 90 mm (3.5 in), it occurs over just 10 days, and the humidity is considerably lower at 66%. For more detailed insights, visit Bucharest weather in July.

December and August present strikingly different weather conditions. In December, temperatures can plummet as low as -9°C (16°F), with an average of just 3°C (37°F) and a maximum of 15°C (60°F). The month is characterized by high humidity levels at 88% and considerable precipitation, totaling 63 mm (2.5 in) over 11 days. In contrast, August boasts much warmer temperatures, ranging from a minimum of 11°C (52°F) to an average of 25°C (77°F), and can reach highs of 38°C (101°F). The humidity is significantly lower at 48%, and rainfall is less frequent, with only 33 mm (1.3 in) over 6 days. For more details on summer weather, check out Bucharest weather in August.

December weather is notably colder, with average temperatures ranging from a minimum of -9°C (16°F) to a maximum of 15°C (60°F). In contrast, September offers much milder conditions, with average temperatures ranging from a minimum of 1°C (35°F) to a maximum of 36°C (97°F). Additionally, December experiences higher precipitation levels, receiving about 63 mm (2.5 in) over 11 days, while September sees significantly less rain, totaling only 23 mm (0.9 in) over just 3 days. Furthermore, the humidity in December is quite high at 88%, compared to a more moderate 57% in September. For more details, you can check Bucharest weather in September.

In comparing the weather of December to that of October, we see significant differences in temperature and overall conditions. December experiences colder temperatures, with a minimum of -9°C (16°F) and an average of 3°C (37°F), whereas October has a more temperate climate featuring a minimum of 1°C (33°F) and an average of 13°C (56°F). Precipitation in December is quite similar to October, with 63 mm (2.5 in) over 11 days compared to October’s 70 mm (2.8 in) over just 7 days. Additionally, December's humidity is higher at 88%, contrasting with October’s 79% humidity. For more detailed insights, visit Bucharest weather in October.

In comparing the weather between November and December, December tends to be colder, with minimum temperatures dipping to -9°C (16°F) compared to November's minimum of -5°C (24°F). The average temperature in December is also lower at 3°C (37°F), while November enjoys a warmer average of 7°C (45°F). Additionally, December experiences more precipitation, totaling 63 mm (2.5 in) over 11 days, whereas November sees 43 mm (1.7 in) over just 8 days. Humidity levels remain similar between the two months, with December at 88% and November slightly lower at 87%. For more detailed insights on November weather, see Bucharest weather in November.

Compare Bucharest's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Bucharest

As December unfolds in Bucharest, the weather takes on a notably cool and crisp character that sets it apart from the milder months of the year. With daytime temperatures rarely exceeding 15°C (60°F), the city feels the chill more intensely as nights plunge to a minimum of -9°C (16°F). This month also welcomes increased chances of precipitation, averaging around 63 mm (2.5 in) over 11 days, enhancing the wintery atmosphere. Combined with high humidity levels reaching 88%, December in Bucharest is infused with a unique blend of winter charm. For a deeper dive into what to expect throughout the year, visit Bucharest Climate.