December Weather in Bucuresti, Romania

Last updated: August 27, 2025

December in Bucuresti, Romania presents a chilly tapestry of winter weather. With maximum temperatures hovering around 15°C (60°F) and an average of just 3°C (37°F), the city's cold embrace is undeniable. The frigid nights can plunge to a bone-chilling minimum of -9°C (16°F). During this month, Bucuresti experiences 63 mm (2.5 in) of precipitation, spread over approximately 11 days, contributing to a muggy ambiance with humidity levels reaching a high 88%. Whether you’re strolling through festively adorned streets or cozying up indoors, December offers a unique charm shaped by its wintry backdrop.

December Temperature in Bucuresti

In December, Bucharest experiences the first whispers of winter, with temperatures ranging from a minimum of -9°C (16°F) to a maximum of 15°C (60°F). The average temperature settles around 3°C (37°F), offering a sharp contrast to the milder conditions of November. As the city prepares for the festive season, residents and visitors alike can expect crisp air and a chance of snowflakes making their debut. The trend of dropping temperatures becomes noticeable as December marks a transition into the colder months, showcasing the enchantment of the season while encouraging warm gatherings and holiday cheer.

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

The chart illustrates December temperature patterns in Bucuresti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bucuresti, 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 Bucuresti 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 Bucuresti

In December, Bucuresti experiences a notable increase in precipitation, with an average of 63 mm (2.5 in), making it one of the wetter months of the year. This surge is accompanied by rainfall on 11 days, reflecting a shift from the drier autumn months. As temperatures drop, the combination of increased precipitation and extended wet days contributes to a chilly, often gray atmosphere, making December an important transitional month in the city's weather pattern. This trend underscores the region's winter climate, where moisture begins to accumulate, setting the stage for the colder months ahead.

December Precipitation Trends in Bucuresti

The chart displays monthly precipitation patterns in Bucuresti, 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 Bucuresti, 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.
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December Humidity in Bucuresti

In București, Romania, the December humidity typically settles at a high level of 88%, mirroring the moisture levels of the preceding January. As the year progresses, a noticeable trend emerges: humidity begins at its peak in the winter months, declining through spring and summer, where it dips to a comfortable 48% in August. However, as autumn approaches, humidity levels rebound sharply, with November hitting 87%. This cycle not only highlights the seasonal shifts in the city’s climate but also emphasizes how December brings residents back into the embrace of the damp winter air, setting the stage for the cold months ahead.

December Average Humidity in Bucuresti

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

In December, Bucuresti experiences a low UV Index of 2, reflecting a significant shift from the intense summer months. With a burn time of 45 minutes, residents and visitors can enjoy outdoor activities with minimal risk of skin damage. This month serves as a tranquil endpoint to the year, as the UV exposure falls back from July and August's peaks of 9, which demand immediate protection. As winter approaches, the UV Index remains moderate for the earlier part of the year, ranging from 3 in February to 8 in May, highlighting the importance of adapting sun safety practices with the changing seasons. To learn more about UV trends throughout the year, visit Bucuresti UV Index.

Maximum UV Index Levels in Bucuresti for December

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

December in Bucuresti welcomes a cozy decline in sunshine hours, basking in 191 hours of radiant light. As the year draws to a close, this figure stands in contrast to the vibrant peak of summer, where the city enjoys over 400 hours of sunshine in June and July. While December's sunlight is less abundant than earlier months, it's a serene pause after the energetic glow of autumn. The gradual reduction from 215 hours in November highlights the shift towards winter, yet still provides ample opportunities for enjoying the city's festive charm. As daylight recedes, residents find beauty in the softer hues of winter, making December an enchanting time in this historical city.

Monthly Sunshine Duration in Bucuresti: December Highlighted

The December sunshine duration represents the total number of hours Bucuresti 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: Bucuresti December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bucuresti During December

In București, Romania, the likelihood of sunny weather takes a noticeable dip in December, with only a 23% chance of sunshine. This marks a significant contrast to the vibrant summer months, such as July and August, where the sun shines brightly 70% of the time. As the year transitions from the warm days of summer to the cold of winter, the chances of encountering sun steadily decrease; for instance, the promise of sunlight drops from 39% in October to a mere 38% in November. The consistent downward trend through the fall months culminates in December's relatively gloomy forecast, making it one of the cloudier times in the capital. Thus, if you're planning a sunny getaway or outdoor activities, it's wise to look to summer months when the skies are clear and inviting.

Percentage of Sunny Days in December in Bucuresti

The chart illustrates the percentage of sunny days in Bucuresti 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 Bucuresti experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%36%42%41%41%43%70%70%59%39%38%23%
Data source: Bucuresti December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bucuresti in December

In Bucuresti, Romania, the daylight duration experiences a captivating ebb and flow throughout the year, with December marking the nadir at just 8 hours of sunlight. This decrease in daylight follows a gradual decline from the summer's peak of 15 hours in June and July, revealing a distinct seasonal rhythm. As the year progresses from vibrant spring days with 13 to 14 hours of light in April and May, it gently fades into shorter hours, culminating in the long nights of winter. While January and February see a modest lengthening of daylight to 9 and 10 hours, respectively, the cycle continues, reminding us of nature's persistent transformation and the arrival of spring just around the corner.

Average Daylight Hours in Bucuresti for December

The chart illustrates the variation in daylight duration in Bucuresti 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: Bucuresti daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Bucuresti

In December, Bucharest experiences a gentle breeze with an average wind speed of 2.7 m/s (6 mph), reflecting a slight uptick from the quieter November winds. As the year winds down, the city's atmospheric conditions reveal an overall stable pattern, with wind speeds hovering around 2.4 to 3.0 m/s during the latter months. This trend indicates that December, similar to the preceding months like October, offers a mild, crisp air that makes for invigorating walks through the city's historic streets. As the winter chill sets in, the calm winds create a serene ambiance, inviting locals and visitors alike to embrace the beauty of this enchanting city at the year's end.

Average December Wind Speed in Bucuresti

The chart displays monthly wind speed patterns in Bucuresti, 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: Bucuresti December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Bucuresti Compares to Other Months

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

December and January in Bucuresti present a noticeable shift in temperature and precipitation patterns. December sees milder temperatures, with a minimum of -9°C (16°F), an average of 3°C (37°F), and a maximum reaching 15°C (60°F). In contrast, January experiences a colder climate, with minimum temperatures dropping to -23°C (-9°F) and an average of 0°C (32°F), while the maximum remains similar at 15°C (59°F). In terms of precipitation, December has 63 mm (2.5 in) over 11 days, while January is drier, with only 40 mm (1.6 in) over 7 days. Despite the drop in temperatures, both months maintain a high humidity level of 88%. For more details, check Bucuresti weather in January.

In December, the weather tends to be milder than in February, with temperatures ranging from a minimum of -9°C (16°F) to a maximum of 15°C (60°F) and an average of 3°C (37°F). The month experiences about 63 mm (2.5 in) of precipitation over 11 days, coupled with a high humidity level of 88%. In February, however, the climate shifts to colder temperatures, with a minimum dropping to -14°C (6°F) and a higher maximum of 21°C (69°F), yet the average remains the same at 3°C (37°F). Precipitation decreases to 43 mm (1.7 in) over 8 days, with humidity slightly lower at 85%. For more detailed information on February weather, you can visit Bucuresti weather in February.

In December, the weather typically features a milder average temperature of around 3°C (37°F), with minimums dipping to -9°C (16°F) and maximums reaching 15°C (60°F). The month sees approximately 63 mm (2.5 in) of precipitation over 11 days, accompanied by high humidity levels at 88%. In contrast, March experiences a broader temperature range, with averages of 6°C (44°F) and maximums soaring up to 25°C (77°F). Although the minimum temperature can plunge to -19°C (-2°F), precipitation levels remain similar, at about 61 mm (2.4 in) over just 9 days, and the humidity is slightly lower at 82%. For a more detailed look at the shifting weather patterns in the region, check out Bucuresti weather in March.

December and April present contrasting weather conditions, showcasing the transition from winter to spring. In December, temperatures can plunge to a minimum of -9°C (16°F), while the average hovers around 3°C (37°F) and can reach up to 15°C (60°F). The month experiences considerable humidity at 88%, alongside 63 mm (2.5 in) of precipitation over 11 days. In stark contrast, April brings a warmer climate with temperatures ranging from a minimum of -1°C (30°F) to a pleasant average of 12°C (54°F) and a maximum of 29°C (84°F). With only 44 mm (1.7 in) of precipitation spread across 7 days and a lower humidity of 73%, April signifies a more comfortable and vibrant atmosphere. For a detailed look at weather conditions, check out Bucuresti weather in April.

December and May showcase contrasting weather characteristics. In December, temperatures can plunge as low as -9°C (16°F), with an average around 3°C (37°F) and maximums reaching 15°C (60°F). This month experiences high humidity at 88%, alongside 63 mm (2.5 in) of precipitation spread over 11 days. On the other hand, May brings a significant rise in temperatures, with minimums of 4°C (39°F), an average of 17°C (63°F), and maximums soaring to 31°C (88°F). While May sees a slightly higher total precipitation of 69 mm (2.7 in) over the same number of rainy days, humidity levels drop to 71%. For more details on May weather specifically in Bucharest, you can visit Bucuresti weather in May.

December and June present starkly contrasting weather patterns. In December, temperatures can plummet as low as -9°C (16°F), with an average of 3°C (37°F) and maximums reaching only 15°C (60°F). The month is characterized by higher humidity at 88% and sees about 63 mm (2.5 in) of precipitation over 11 days. In contrast, June brings much warmer conditions, with minimum temperatures around 7°C (46°F) and an average of 22°C (71°F), soaring to highs of 37°C (99°F). June experiences increased rainfall, totaling 115 mm (4.5 in) over 15 days, but with significantly lower humidity at 70%. For more specifics about the June weather, you can check Bucuresti weather in June.

December and July in Bucuresti present stark contrasts in weather. December experiences colder temperatures, with a minimum of -9°C (16°F) and an average of 3°C (37°F), while July enjoys much warmer conditions, with a minimum of 12°C (54°F) and an average of 24°C (75°F). Precipitation levels are relatively comparable, with December receiving 63 mm (2.5 in) over 11 days and July slightly wetter at 90 mm (3.5 in) across 10 days. Additionally, humidity is higher in December at 88%, compared to a more comfortable 66% in July. For more details on the July weather, you can visit Bucuresti weather in July.

When comparing the weather in December and August, a stark contrast emerges. December experiences much colder temperatures, with averages around 3°C (37°F), while in August, the temperatures are significantly warmer, averaging 25°C (77°F) and peaking at 38°C (101°F). Additionally, December sees higher humidity at 88% and more frequent precipitation, totaling 63 mm (2.5 in) over 11 days, compared to August's milder conditions with only 33 mm (1.3 in) over 6 days and a humidity level of 48%. For more details on August weather specifically, you can visit the following link: Bucuresti weather in August.

In December, the weather is characterized by significantly colder temperatures, with a minimum of -9°C (16°F) and an average of 3°C (37°F), contrasting sharply with September's mild climate, where temperatures range from a minimum of 1°C (35°F) to an average of 20°C (68°F) and can even reach a maximum of 36°C (97°F). December experiences more frequent precipitation, totaling 63 mm (2.5 in) over 11 days, while September is much drier, with only 23 mm (0.9 in) falling over just 3 days. Additionally, the humidity in December is notably higher at 88%, compared to 57% in September, creating a distinct difference in comfort levels between the two months. For more detailed insights, visit Bucuresti weather in September.

In December, the weather becomes significantly colder, with temperatures ranging from a minimum of -9°C (16°F) to a maximum of 15°C (60°F) and an average temperature of 3°C (37°F). The month experiences about 63 mm (2.5 in) of precipitation spread over 11 days, accompanied by high humidity levels of 88%. In contrast, October presents a much milder climate, with temperatures varying from a minimum of 1°C (33°F) to a warm maximum of 31°C (87°F), and an average of 13°C (56°F). October's precipitation is slightly higher at 70 mm (2.8 in) but falls over fewer days, totaling just 7. This seasonal transition highlights the shift from the cool, wet conditions of October to the much chillier and damp December weather. For more specific details, you can refer to Bucuresti weather in October.

In comparison to November, December experiences a notable drop in average temperatures, with minimums reaching -9°C (16°F) and an average high of just 15°C (60°F). While November sees milder conditions, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 28°C (82°F) and an average of 7°C (45°F), December's chill is accompanied by increased precipitation, totaling 63 mm (2.5 in) over 11 days, compared to November's 43 mm (1.7 in) over 8 days. Both months are characterized by high humidity levels, with December slightly higher at 88% compared to November's 87%. For more details on November's weather, visit Bucuresti weather in November.

Compare Bucuresti's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Bucuresti

As December sets in, București transforms into a winter wonderland, with its weather marked by cooler temperatures and a notable increase in humidity. Although daily highs can reach a comfortable 15°C, the average dips significantly, heralding the arrival of chillier days and nights. With at least 11 days of precipitation throughout the month, residents and visitors alike should be prepared for a mix of rain and the first glimpses of winter snow. This blend of conditions not only distinguishes December from the milder fall months but also sets the stage for a festive atmosphere in the city. For a deeper dive into the data, explore Bucuresti Climate.