December Weather in Brno, Czech Republic

Last updated: April 1, 2025

December in Brno, Czech Republic is characterized by chilly temperatures and a festive atmosphere. With a maximum temperature reaching 10°C (51°F) and an average of just 1°C (34°F), locals and visitors alike bundle up against the cold, with nighttime lows dropping to a brisk -7°C (20°F). This month also sees considerable precipitation, averaging 51 mm (2.0 in) over approximately 13 days, contributing to a humid environment with levels around 91%. Despite the cooler conditions, December offers a unique charm as the city prepares for the holiday season, perfect for those embracing winter joys.

December Temperature in Brno

In Brno, Czech Republic, December ushers in a significant drop in temperatures as the year draws to a close. The month sees minimums dipping to around -7°C (20°F), creating a chilling ambiance, while the average temperature settles at a crisp 1°C (34°F). Although daytime highs may only reach about 10°C (51°F), it marks a notable transition from the milder temperatures of November. This trend of declining temperatures reflects a steady descent into winter, setting the scene for a picturesque season often adorned with snow. As Brno embraces the festive spirit, residents and visitors alike gear up for cozy gatherings amidst the chill, making the most of this serene yet vibrant winter month.

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

The chart illustrates December temperature patterns in Brno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec303440485666676859504134
Data source: Temperature data for Brno 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 Brno

In December, Brno experiences a notable uptick in precipitation, with 51 mm (2.0 inches) of rainfall spread over 13 days. This increase marks a slight rise compared to the preceding months, reflecting a trend of wetter conditions as winter sets in. While November had 46 mm over 9 days, December showcases the city's transformation into a season characterized by more frequent, albeit lighter, showers. This shift not only highlights the arrival of colder weather but also prepares the ground for the greener embrace of spring, even as the last month of the year wraps up in a cozy, wet blanket.

December Precipitation Trends in Brno

The chart displays monthly precipitation patterns in Brno, 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.
JanFebMarAprMayJunJulAugSepOctNovDec333536368279807191564651
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Brno

In Brno, Czech Republic, December ushers in a notable increase in humidity, reaching 91%, the highest point of the year. This trend reflects a steady rise in moisture levels as the colder months approach, with November also high at 90%. The latter part of the year shows a steady climb from October's 85%, culminating in December's damp chill. This winter humidity is in stark contrast to the drier summer months, where levels hovered around the mid-70s. As the year progresses, Brno experiences a cyclical shift from the balmy conditions of May’s 73% to the enveloping embrace of winter’s humidity, creating a distinctive rhythm in the city’s climate.

December Average Humidity in Brno

This chart illustrates the average monthly humidity levels in Brno, 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.
JanFebMarAprMayJunJulAugSepOctNovDec90%87%85%78%74%77%76%76%75%85%90%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Brno

As December rolls into Brno, the UV Index returns to a low level of 2, similar to the conditions seen at the beginning of the year in January and November. This indicates a comfortable time for outdoor activities with a burn time of 45 minutes—a significant increase compared to the very high indexes of summer months where exposure times were cut to just 15 minutes. The gradual decline from the intense sun of May through August, when the UV Index peaked at 8, reflects the changing seasons. As winter approaches, those venturing outdoors should still remain mindful of UV exposure despite the cooler temperatures. For detailed insights on UV levels throughout the year, visit Brno UV Index.

Maximum UV Index Levels in Brno for December

The chart shows the monthly maximum UV Index (UVI) for Brno 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.
JanFebMarAprMayJunJulAugSepOctNovDec235688876422
Data source: Brno 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 Brno

In Brno, Czech Republic, the trend in sunshine hours reveals a captivating seasonal rhythm. Starting with a modest 130 hours in January, the days gradually brighten and extend, reaching a peak of 433 hours in the sun-drenched month of July. As summer ebbs, sunshine hours begin to decline, with August seeing 386 hours before a noticeable drop leads into the cooler fall months. September holds onto 315 hours, while November brings a dramatic decrease to 177 hours, signaling the onset of winter. By December, Brno experiences 157 hours of sunshine, a mere flicker compared to the summer’s bounty, yet still a welcome glow during the chilly days of the year. The overall trend showcases a clear seasonal shift, from the hopeful brightness of spring and summer to the subdued light of winter, offering a unique charm to Brno's December.

Monthly Sunshine Duration in Brno: December Highlighted

The December sunshine duration represents the total number of hours Brno 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.
JanFebMarAprMayJunJulAugSepOctNovDec130h210h295h334h381h411h433h386h315h266h177h157h
Data source: Brno December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Brno During December

In Brno, Czech Republic, December's weather tends to be quite gloomy, with a mere 17% chance of sunshine, marking it as one of the dreariest months of the year. As the temperatures drop, the likelihood of bright days diminishes significantly compared to the more cheerful spring months, where the sun often makes a welcome return with a 50% chance in March. While the chance of sunny weather fluctuates throughout the year, December stands out for its limited sunlight, following a trend of declining brightness from autumn, where November has only a slightly higher 23% chance. This seasonal shift leaves residents anticipating the brighter days ahead as winter settles in.

Percentage of Sunny Days in December in Brno

The chart illustrates the percentage of sunny days in Brno 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 Brno experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%31%50%36%35%47%43%34%46%46%23%17%
Data source: Brno December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Brno in December

As the year winds down in Brno, Czech Republic, December brings a familiar retreat into daylight with only 8 hours available. This pattern mirrors the earlier months of January, when daylight is also limited to the same duration, marking the winter's peak. In contrast, the progression from February to June showcases a gradual increase in sunlight, peaking at an impressive 16 hours in June, which heralds the long, bright days of summer. Following this summer crescendo, daylight hours begin their slow decline, fading from 15 hours in July to just 8 hours by December, creating a rhythmic ebb and flow of light throughout the year. This seasonal dance vividly reflects nature's cycles and influences the daily life of Brno's residents, who can anticipate longer days with the arrival of spring.

Average Daylight Hours in Brno for December

The chart illustrates the variation in daylight duration in Brno throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 41m10h 8m11h 55m13h 45m15h 20m16h 9m15h 43m14h 18m12h 32m10h 43m9h 5m8h 14m
Data source: Brno daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Brno

As December unfolds in Brno, the wind begins to pick up slightly, averaging 3.3 m/s (7 mph), a transition from the more gentle breezes of late autumn. This increase sets the stage for the winter chill that characterizes the month, drawing a contrast to the milder winds of the summer, which dipped as low as 2.5 m/s in June. Interestingly, December's wind speeds reflect a slight rise compared to November's 3.2 m/s, indicating that the city's winter weather is making its presence felt. This trend of fluctuating wind speeds throughout the year—ranging from brisk gusts in the spring and fall to calmer conditions in the summer—creates a dynamic atmospheric dance that defines Brno's climate. As the year closes, those December winds herald the cozy indoor gatherings and festive celebrations that fill the city with warmth amid the cold air.

Average December Wind Speed in Brno

The chart displays monthly wind speed patterns in Brno, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.03.12.93.63.72.52.82.62.63.53.23.3 m/s
Data source: Brno December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Brno Compares to Other Months

The weather in Brno 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 Brno and find detailed weather information for every month.

December and January present distinct contrasts in weather. In December, temperatures range from a minimum of -7°C (20°F) to a maximum of 10°C (51°F), averaging around 1°C (34°F) with relatively high humidity at 91%. The month sees about 51 mm (2.0 in) of precipitation over 13 days. However, January is noticeably colder, with temperatures plummeting to a minimum of -17°C (2°F) and maintaining an average of -1°C (31°F); it can reach a maximum of 12°C (54°F). This month experiences less precipitation, totaling 33 mm (1.3 in) over 9 days, and humidity slightly decreases to 90%. For more specifics about January weather, check out Brno weather in January.

December weather tends to be slightly milder compared to February, with average temperatures hovering around 1°C (34°F) and a maximum of 10°C (51°F). In contrast, February often sees colder temperatures, with minimums dropping to -15°C (4°F) while still averaging 1°C (34°F) and peaking at 15°C (60°F). Precipitation is more frequent in December, occurring on 13 days with a total of 51 mm (2.0 in), compared to February's 8 days and 35 mm (1.4 in). Humidity is also marginally lower in February, at 87%, compared to December's 91%. For more detailed insights, check out Brno weather in February.

In December, temperatures in Brno range from a chilly -7°C (20°F) to a maximum of 10°C (51°F), with an average of around 1°C (34°F). The month typically sees 51 mm (2.0 in) of precipitation over about 13 days, along with a high humidity level of 91%. In contrast, March experiences slightly milder weather, with temperatures fluctuating between -16°C (4°F) and a pleasant 21°C (69°F), averaging around 4°C (40°F). Precipitation is lower at 35 mm (1.4 in) across only 7 days, and humidity is slightly lower at 85%. For more details on the weather in Brno during March, you can visit this link: Brno weather in March.

December weather is characterized by colder temperatures, with an average of 1°C (34°F) and extremes ranging from -7°C (20°F) to a maximum of 10°C (51°F). This month sees significant humidity at 91%, along with 13 days of precipitation totaling 51 mm (2.0 in). In contrast, April brings a much milder climate with average temperatures rising to 9°C (49°F), peaking at 26°C (80°F). With only 36 mm (1.4 in) of precipitation over 9 days, humidity decreases to 78%, marking a clear transition to spring. For more information, you can explore Brno weather in April.

December and May showcase strikingly different weather patterns. In December, temperatures range from a chilly -7°C (20°F) at night to a mild 10°C (51°F) during the day, while frequent precipitation accumulates to around 51 mm (2.0 in) over about 13 days, complemented by high humidity levels of 91%. In contrast, May brings a much warmer climate, with nighttime lows of -1°C (30°F) and daytime highs soaring up to 31°C (87°F). This month also experiences increased rainfall, totaling approximately 82 mm (3.2 in) across 15 days, yet the humidity is considerably lower at 73%. For more details on May weather, check out Brno weather in May.

When comparing the weather in December and June, significant differences become apparent. December experiences much colder temperatures, with averages around 1°C (34°F) and a potential low of -7°C (20°F), while June boasts warmer averages of 19°C (67°F) and can reach highs of 32°C (90°F). Precipitation is slightly higher in June at 79 mm (3.1 in) over 12 days, compared to December's 51 mm (2.0 in) spread over 13 days. Additionally, December is characterized by a high humidity level of 91%, contributing to a chillier atmosphere, whereas June's humidity sits at a more moderate 77%. For a more detailed overview, check out Brno weather in June.

December and July present stark contrasts in weather conditions. In December, temperatures can drop as low as -7°C (20°F), with an average of 1°C (34°F) and maxing out at 10°C (51°F). The month is characterized by high humidity at 91% and typically experiences 51 mm (2.0 in) of precipitation over about 13 days. In contrast, July showcases a much warmer climate, with temperatures ranging from a minimum of 5°C (41°F) to an average of 20°C (67°F) and peaking at 33°C (92°F). Despite slightly more precipitation at 80 mm (3.1 in) over 12 days, the lower humidity of 76% contributes to a more comfortable feel. For more details on the weather during this summer month, you can check Brno weather in July.

December weather in Brno is characterized by colder temperatures, with averages hovering around 1°C (34°F) and a maximum of only 10°C (51°F). In contrast, August brings a much warmer climate, with average temperatures reaching 20°C (69°F) and highs peaking at 34°C (93°F). While both months experience a comparable number of rainy days—13 in December and 12 in August—the total precipitation in August is slightly higher at 71 mm (2.8 in) compared to 51 mm (2.0 in) in December. Additionally, December's humidity is notably higher at 91%, making it feel much chillier than the more comfortable 76% in August. For more details about August weather, you can visit Brno weather in August.

December weather is characterized by much colder temperatures, with lows reaching -7°C (20°F) and an average of just 1°C (34°F), compared to September's milder conditions, where temperatures range from a minimum of 0°C (31°F) to a comfortable average of 15°C (59°F). While December sees about 51 mm (2.0 in) of precipitation over 13 days, September experiences higher precipitation at 91 mm (3.6 in) across 10 days, yet with lower humidity at 75% compared to December's 91%. For more detailed insights, you can check Brno weather in September.

In comparing the weather between October and December, it is clear that December is significantly colder, with average temperatures hovering around 1°C (34°F), while October enjoys milder conditions with averages around 10°C (50°F). The maximum temperatures in December reach only up to 10°C (51°F), contrasting sharply with October's highs of 22°C (72°F). Moreover, December experiences increased humidity at 91%, compared to October's 85%, making the air feel even chillier during the winter month. Precipitation is somewhat similar, with December recording 51 mm (2.0 in) over 13 days and October slightly higher at 56 mm (2.2 in) throughout 10 days. For more detailed information, you can visit Brno weather in October.

When comparing the weather in December to that of November, notable differences emerge. December experiences slightly lower temperatures, with a minimum of -7°C (20°F) and an average of 1°C (34°F), while November is milder, with temperatures ranging from a minimum of -8°C (18°F) to an average of 5°C (41°F). The maximum temperatures in November can reach as high as 16°C (62°F), significantly higher than December's maximum of 10°C (51°F). Precipitation levels are comparable, with December receiving 51 mm (2.0 in) over 13 days and November having 46 mm (1.8 in) over 9 days. Interestingly, both months exhibit high humidity, with December at 91% and November at 90%. For more detailed information, you can visit Brno weather in November.

Compare Brno's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Brno

As December settles over Brno, the city transforms into a winter wonderland, with temperatures notably cooler than in previous months. The contrast between the brisk days and chilly nights is evident, creating a unique atmosphere that makes this month distinct. With higher humidity levels and frequent precipitation, December can be particularly damp, begging for cozy indoor activities. While the chill may deter some, it invites others to embrace the festive spirit and enjoy the beauty of the season. For those curious about the broader climate patterns throughout the year, check out Brno Climate to deepen your understanding.