December Weather in Bologna, Italy

Last updated: March 24, 2025

In December, Bologna, Italy, experiences a distinctive blend of winter weather, characterized by a maximum temperature of 16°C (61°F), an average of 5°C (42°F), and a minimum drop to -6°C (22°F). This month, the city sees 74 mm (2.9 in) of precipitation spread across 10 days, making for a rather damp and chilly atmosphere. With an humidity level hovering around 85%, visitors can expect a crisp yet cozy ambiance, perfect for enjoying the city's rich culture and festive spirit during the holiday season.

December Temperature in Bologna

In Bologna, Italy, December ushers in the chill of winter, with temperatures starting to dip. As the month progresses, the minimum temperatures hover around a brisk -6°C (22°F), while the daytime average settles at a crisp 5°C (42°F). Despite the cold, Bologna's charm remains captivating, with high temperatures reaching up to 16°C (61°F). This pattern reflects a gradual transition from the milder autumn months, where November averaged 10°C (51°F), heralding the onset of the colder season. With a notable drop in temperatures compared to the preceding months, December invites visitors to bundle up and experience the city's festive atmosphere, adorned with holiday cheer.

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

The chart illustrates December temperature patterns in Bologna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec394549576575797969605042
Data source: Temperature data for Bologna 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 Bologna

In December, Bologna experiences a notable shift in precipitation, receiving 74 mm (2.9 in) of rain over approximately 10 days. This marks a continuation of the wetter pattern established in November, which recorded the highest rainfall of the year at 118 mm (4.6 in). With December's precipitation slightly lower yet substantial, it indicates the onset of winter, where moisture often combines with cooler temperatures. The steady rainfall during this time builds upon the gradual increase seen in late autumn, hinting at the region's transition from the crispness of fall to the chill of winter months. While December may be wet, it maintains a relatively moderate level of precipitation compared to the peak month of May, which boasts an impressive 112 mm (4.4 in) across more than two weeks of rain. This trend underscores Bologna’s characteristic climate, where rainfall becomes an integral part of the landscape as the year draws to a close.

December Precipitation Trends in Bologna

The chart displays monthly precipitation patterns in Bologna, 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.
JanFebMarAprMayJunJulAugSepOctNovDec24734859112486049866511874
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bologna

In Bologna, Italy, December wraps up the year with a notable humidity level of 85%, slightly lower than the high of 88% seen in November. This sustained humidity reflects a gradual decrease observed throughout the year, peaking during the colder months. From January's 87%, the city experiences a steady decline as temperatures rise, dipping to an annual low of 54% in August. As autumn approaches, humidity climbs again, reaching its zenith in late fall. This cyclical trend highlights Bologna's characteristic seasonal shifts, where moisture levels rebound with the arrival of colder weather, creating a distinct atmosphere in the final month of the year.

December Average Humidity in Bologna

This chart illustrates the average monthly humidity levels in Bologna, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%79%69%71%70%65%61%54%66%83%88%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bologna

As winter envelops Bologna in December, the UV Index drops to a low value of 2, marking a significant decrease from the very high levels seen during the summer months. This drop indicates that sun exposure is generally safe, with a burn time of approximately 45 minutes—a stark contrast to the brief 15 minutes required in the height of summer. Following a gradual decline from the intense UV index of 10 in June to 3 in November, December's soothing index encourages leisurely outdoor activities with minimal sun protection concerns. This seasonal trend highlights the importance of adapting sun safety practices throughout the year. For more detailed information, visit Bologna UV Index.

Maximum UV Index Levels in Bologna for December

The chart shows the monthly maximum UV Index (UVI) for Bologna 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.
JanFebMarAprMayJunJulAugSepOctNovDec2367810987532
Data source: Bologna 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 Bologna

December brings a gentle touch of sunshine to Bologna, with 211 hours of bright daylight illuminating the city as the year draws to a close. While winter settles in, the daylight hours are a subtle reminder of the sun's steady journey throughout the seasons. Notably, December experiences a slight dip compared to the vibrant hours of late spring and summer, yet it still holds more light than the preceding months of November. As the days gradually shorten through the fall, the relative abundance of light in December creates a cozy atmosphere, inviting locals and visitors alike to embrace the holiday spirit within this enchanting Italian city.

Monthly Sunshine Duration in Bologna: December Highlighted

The December sunshine duration represents the total number of hours Bologna 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.
JanFebMarAprMayJunJulAugSepOctNovDec180h220h310h339h381h419h427h397h336h297h209h211h
Data source: Bologna December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bologna During December

In Bologna, Italy, the likelihood of sunny weather experiences intriguing shifts throughout the year, particularly as December rolls in with a 45% chance of sunshine. While this figure offers a slight improvement over the gloomier November, which sees only a 30% chance, it still leaves much to be desired for sun-seekers. Generally, the city enjoys its sunniest months in the spring, notably March with a promising 69%, and cresting in the lively summer months, especially August at 62%. As winter approaches, the sun's presence dwindles, yet December's chances suggest that a pleasant day here and there is certainly within reach. This transitional month serves as a reminder that Bologna, despite the chill, can still offer glimpses of warmth amidst its winter landscape.

Percentage of Sunny Days in December in Bologna

The chart illustrates the percentage of sunny days in Bologna 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 Bologna experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec37%46%69%47%48%60%54%62%55%46%30%45%
Data source: Bologna December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bologna in December

As winter descends upon Bologna, December marks the season's shortest days, offering just 8 hours of daylight. This gradual decline from the previous months highlights a clear trend: from the bright 15 hours of sunlight enjoyed in the height of summer, daylight progressively decreases, peaking at a modest 9 hours in January and November. The shift from radiant 14 hours in May to the dim twilight of December underscores the seasonal ebb and flow, where the vibrant life of summer gives way to the quieter, reflective ambiance of winter. This pattern not only influences daily routines but also enriches the cultural tapestry of Bologna, inviting residents and visitors alike to embrace the cozy charm of the city during the festive season.

Average Daylight Hours in Bologna for December

The chart illustrates the variation in daylight duration in Bologna 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 28m15h 7m13h 57m12h 28m10h 56m9h 34m8h 52m
Data source: Bologna daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Bologna

As December settles over Bologna, the city's wind takes on a gentler character, with average speeds dipping to 1.6 m/s (4 mph). This calmness marks a shift from the slightly brisk spring and early summer months, where winds tend to be livelier, peaking at 2.6 m/s (6 mph) in May. The trend throughout the year reveals a gradual decline in wind intensity as colder months approach, reaching its nadir in December, which adds to the cozy ambiance of the city during the holiday season. As the calendar year draws to a close, Bologna's tranquil December winds create an inviting backdrop, allowing residents and visitors alike to embrace the slower pace of winter.

Average December Wind Speed in Bologna

The chart displays monthly wind speed patterns in Bologna, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.12.02.12.22.62.01.92.21.72.12.01.6 m/s
Data source: Bologna December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Bologna Compares to Other Months

The weather in Bologna changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Bologna and find detailed weather information for every month.

In December, the weather typically features a wider temperature range with minimums dropping to -6°C (22°F) and average highs reaching up to 16°C (61°F). This month also experiences more precipitation, totaling 74 mm (2.9 in) over about 10 days, and a humidity level of 85%. In contrast, January sees slightly cooler average temperatures, with highs around 15°C (59°F) and a consistent minimum of -6°C (22°F). Additionally, January is notably drier, with only 24 mm (1.0 in) of precipitation spread across about 4 days, and a slightly higher humidity level of 87%. For more detailed information, check Bologna weather in January.

In December, temperatures range from a chilly minimum of -6°C (22°F) to a comfortable maximum of 16°C (61°F), with an average of 5°C (42°F). The month sees about 74 mm (2.9 in) of precipitation over approximately 10 days, coupled with a high humidity level of 85%. In contrast, February offers slightly colder mornings, with lows reaching -9°C (16°F) but warmer daytime highs that can climb to 21°C (70°F), averaging around 7°C (45°F). Precipitation is similar at 73 mm (2.9 in), but it occurs over one fewer day, and humidity drops to 79%. This shift in weather patterns marks February as a transitional month towards spring, still carrying the remnants of winter. For more details, check out the Bologna weather in February.

In December, the weather is notably colder, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 16°C (61°F), averaging around 5°C (42°F). The month experiences significant precipitation of 74 mm (2.9 in) over approximately 10 days, coupled with high humidity levels at 85%. In contrast, March sees a shift towards milder conditions, with temperatures dipping as low as -13°C (9°F) and peaking at 25°C (77°F), while the average temperature rises to about 10°C (50°F). The precipitation is less in March at 48 mm (1.9 in) across 7 days, and the humidity also decreases to 69%. For a detailed comparison, you can check Bologna weather in March.

In December, the weather tends to be quite chilly, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 16°C (61°F) and an average of just 5°C (42°F). The month experiences considerable precipitation, measuring around 74 mm (2.9 in) over about 10 days, coupled with high humidity levels of 85%. In contrast, April brings a much milder climate, with temperatures ranging from a minimum of -1°C (31°F) to a comfortable maximum of 27°C (81°F), and an average temperature of 14°C (57°F). Precipitation decreases slightly to 59 mm (2.3 in) over 8 days, while humidity drops to a more pleasant 71%. For more details on the April weather in Bologna, you can check Bologna weather in April.

In December, the weather can be quite chilly, with temperatures ranging from a brisk minimum of -6°C (22°F) to a mild maximum of 16°C (61°F), accompanied by significant humidity levels at 85%. With an average temperature of 5°C (42°F), December experiences about 74 mm (2.9 in) of precipitation over approximately 10 days. In contrast, May brings a much warmer and more inviting climate, with temperatures stretching from a pleasant minimum of 6°C (43°F) to a hot maximum of 32°C (90°F) and an average of 18°C (65°F). The month sees increased precipitation at 112 mm (4.4 in), but it is spread across about 14 days, and humidity drops to 70%. For a more detailed look at May weather, you can check out Bologna weather in May.

December and June present stark contrasts in weather conditions. December experiences colder temperatures, with a minimum of -6°C (22°F) and an average of 5°C (42°F), while June enjoys a much warmer climate, featuring a minimum of 12°C (55°F) and an average of 24°C (75°F). Precipitation is more frequent in December, with 74 mm (2.9 in) of rain over 10 days, compared to June's 48 mm (1.9 in) spread over just 7 days. Additionally, the humidity level in December is significantly higher at 85%, making the cold feel even more intense, whereas June has a notably more comfortable humidity of 65%. For more about the conditions during this warmer month, check out Bologna weather in June.

December and July exhibit stark contrasts in weather patterns. In December, temperatures range from a chilly -6°C (22°F) at night to a mild average of 5°C (42°F), with a maximum of 16°C (61°F). Precipitation is relatively high at 74 mm (2.9 in), occurring over 10 days, and the humidity is quite high at 85%, creating a damp and cool atmosphere. In sharp contrast, July boasts much warmer temperatures, with a minimum of 15°C (60°F), an average of 26°C (79°F), and a scorching maximum of 38°C (100°F). Precipitation in July is lower at 60 mm (2.3 in) spread over 8 days, and the humidity falls to a more comfortable 61%, resulting in a hot and generally dry climate. For more detailed information on weather conditions, you can check Bologna weather in July.

December and August present strikingly different weather patterns. In December, temperatures range from a chilly -6°C (22°F) at night to a mild 16°C (61°F) during the day, with an average of 5°C (42°F). The month sees around 74 mm (2.9 in) of precipitation over 10 days and a high humidity level of 85%. In contrast, August boasts significantly warmer temperatures, with lows of 13°C (55°F) and highs soaring to 40°C (105°F), averaging around 26°C (79°F). Precipitation is lower in August, at 49 mm (1.9 in) over just 8 days, coupled with a more comfortable humidity of 54%. For detailed insights, visit Bologna weather in August.

In December, the weather tends to be much colder than in September, with temperatures ranging from a chilly -6°C (22°F) at night to a mild maximum of 16°C (61°F) during the day. In contrast, September enjoys warmer conditions, featuring temperatures that vary from a minimum of 7°C (45°F) to a comfortable average of 21°C (70°F) and even reaching highs of 34°C (93°F). While both months experience about 10 days of precipitation, December's rainfall totals around 74 mm (2.9 in) and comes with higher humidity at 85%, compared to September's 86 mm (3.4 in) and 66% humidity. For more details, you can visit Bologna weather in September.

October and December present quite different weather conditions. In October, temperatures range from a minimum of 5°C (41°F) to a maximum of 27°C (82°F), with an average of 15°C (60°F). The month experiences 65 mm (2.5 in) of precipitation over about 7 days, accompanied by a humidity level of 83%. In contrast, December sees much cooler temperatures, with a minimum of -6°C (22°F) and a maximum of 16°C (61°F), averaging 5°C (42°F). The rainfall increases slightly to 74 mm (2.9 in), occurring over approximately 10 days, and humidity rises to 85%. This shift from October's mild and relatively dry weather to December's colder and wetter conditions highlights the changing seasons. For more insights on October weather, you can check Bologna weather in October.

When comparing the weather in December to that of November, we notice several notable differences. December experiences colder temperatures, with a minimum of -6°C (22°F) and an average of 5°C (42°F), while November has milder conditions, featuring a minimum of -2°C (29°F) and an average of 10°C (51°F). Precipitation levels also drop in December, totaling 74 mm (2.9 in) over 10 days, compared to November's 118 mm (4.6 in) over 12 days, indicating that November is generally wetter. Additionally, December's humidity at 85% is slightly lower than November's 88%. For a more detailed look at November’s weather, you can visit Bologna weather in November.

Compare Bologna's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Bologna

December in Bologna marks a distinct transition into the cooler side of the year, with temperatures dipping significantly compared to the mild autumn months. As the city embraces the winter chill, you can expect crisper days characterized by a mix of frosty mornings and milder afternoons. While precipitation increases slightly, adding a touch of grey to the skyline, the humidity stays high, wrapping the atmosphere in a cool embrace. This month is perfect for cozying up in cafés or exploring the festive markets that bring warmth to the heart of the city. For a deeper insight into how December's weather compares to other months, visit Bologna Climate to plan your visit accordingly.