December Weather in Ostrava, Czech Republic

Last updated: April 1, 2025

December in Ostrava, Czech Republic presents a captivating winter atmosphere, characterized by a maximum temperature reaching 14°C (58°F) and an average hovering around 1°C (35°F). The chill of the season brings minimum temperatures dipping to -11°C (12°F), making warm attire essential for outdoor activities. Despite the cold, the month receives a notable precipitation amount of 68 mm (2.7 in) over approximately 14 days, resulting in a humidity level of 91% that envelops the city in a crisp, refreshing air. Perfect for those who appreciate the charm of winter landscapes, December in Ostrava offers a unique blend of beauty and briskness.

December Temperature in Ostrava

In December, Ostrava, Czech Republic experiences a significant dip in temperatures, ushering in the heart of winter. With minimums reaching as low as -11°C (12°F), the city is enveloped in a cold embrace, while average temperatures hover around 1°C (35°F). Despite the chill, daytime highs can still reach a mild 14°C (58°F), offering a brief respite from the winter's grasp. This month marks a transition from the crisper autumn air of November, where temperatures were slightly milder, with averages of 6°C (43°F). The consistent drop in temperatures from the previous months highlights December as a time of stark contrasts, blending the beauty of winter's serene landscapes with the lively spirit of holiday celebrations. As snow begins to blanket the region, Ostrava showcases its winter charm, becoming a quintessential destination for those looking to embrace the season's magic.

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

The chart illustrates December temperature patterns in Ostrava, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec313439485666676759514235
Data source: Temperature data for Ostrava 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 Ostrava

December in Ostrava, Czech Republic, embraces the arrival of winter with a moderate precipitation total of 68 mm (2.7 in), which is a notable increase compared to the preceding months. Spanning 14 days, this month's rainfall contributes to a crisp and chilly atmosphere, heralding the holiday season. While not the wettest month, December showcases an upward trend in precipitation that aligns with the generally increased moisture of late autumn. This pattern reflects the shift from drier conditions earlier in the year, with both November's 49 mm and October's 84 mm offering a stark contrast. As the year comes to a close, the steady precipitation makes for an enchanting winter landscape, setting the scene for serene snowy days ahead.

December Precipitation Trends in Ostrava

The chart displays monthly precipitation patterns in Ostrava, 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.
JanFebMarAprMayJunJulAugSepOctNovDec445752601018692112103844968
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Ostrava

As the year concludes, December in Ostrava, Czech Republic, experiences a notable rise in humidity, reaching 91%—the highest level since January's 90%. This increase marks a shift from the summer months, where humidity dipped to a comfortable 67% in July and 64% in August. The transition into winter brings a return to elevated moisture levels, with November already showcasing a high of 90%. Overall, the data highlights a clear trend: as colder temperatures take hold, so does the humidity, creating a damp atmosphere that permeates the city during the winter months.

December Average Humidity in Ostrava

This chart illustrates the average monthly humidity levels in Ostrava, 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%83%76%70%71%67%64%67%83%90%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Ostrava

As December rolls into Ostrava, the UV Index drops to a low level of 1, marking a significant decrease from the previous months' highs. This month, the exposure category remains comfortably low, with a burn time of 45 minutes. Following a trend seen throughout the year, December provides a welcome respite from the intense UV radiation of late spring and summer, where levels peaked at 8 in June and July. In fact, from March’s moderate UV levels of 4 to the high readings of 6 and 7 in the spring and summer months, the gradual decline showcases how UV exposure diminishes as the year winds down. For those interested in understanding more about the UV levels throughout the year, you can check the data at Ostrava UV Index.

Maximum UV Index Levels in Ostrava for December

The chart shows the monthly maximum UV Index (UVI) for Ostrava 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.
JanFebMarAprMayJunJulAugSepOctNovDec224678876421
Data source: Ostrava 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 Ostrava

December in Ostrava, Czech Republic, offers a gentle transition into winter, with 147 hours of sunshine illuminating the crisp days. While this is a drop from the vibrant summer months, it still adds a warm touch to the colder season. Throughout the year, sunshine peaks in the summer, with July basking in a remarkable 429 hours. As the months shift toward winter, the gradual decline in sunlight becomes evident, with December showcasing less than half the hours enjoyed in mid-year. Yet, even in these darker days, December's sunlight serves as a reminder of the warmth and brightness that will return with the coming spring, as this city transitions from the bustling energy of summer to the serene beauty of winter.

Monthly Sunshine Duration in Ostrava: December Highlighted

The December sunshine duration represents the total number of hours Ostrava 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.
JanFebMarAprMayJunJulAugSepOctNovDec133h194h294h328h376h412h429h389h310h262h191h147h
Data source: Ostrava December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ostrava During December

In Ostrava, the likelihood of sunny weather in December is notably low, with only an 18% chance of sunshine. This figure marks a significant drop compared to the preceding months; for instance, in November, the odds are slightly better at 28%. Observing the overall trend from the beginning of the year, we see a gradual increase in sunny days as spring approaches, peaking in June with a bright 51% chance. However, the darker, colder months of winter bring a notable decline, making December one of the cloudiest months of the year. This seasonal variability underscores the transition from the vibrant hues of autumn to the more subdued grey skies of winter, setting a distinct ambiance for the end of the year.

Percentage of Sunny Days in December in Ostrava

The chart illustrates the percentage of sunny days in Ostrava 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 Ostrava experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%30%41%34%33%51%40%35%42%50%28%18%
Data source: Ostrava December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ostrava in December

As December settles in, Ostrava, Czech Republic, experiences a return to shorter days, with daylight lasting around 8 hours. This marks a continuation of the trend seen throughout the late fall and winter months, where daylight gradually diminishes from October's 10 hours to November's 9, culminating in the year's shortest days. The shift from the vibrant light of late spring and summer—peaking at a generous 16 hours in June—highlights the season's cyclical nature. As daylight wanes, the contrast with the longer, sun-filled months serves as a reminder of the beauty in these seasonal transitions, inviting residents to enjoy the charm of winter's shorter days.

Average Daylight Hours in Ostrava for December

The chart illustrates the variation in daylight duration in Ostrava throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 38m10h 6m11h 55m13h 47m15h 23m16h 13m15h 47m14h 20m12h 33m10h 42m9h 3m8h 10m
Data source: Ostrava daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Ostrava

As December settles over Ostrava, the average wind speed remains steady at 3.2 m/s (7 mph), mirroring the calmer conditions typically seen in the height of the winter season. Throughout the year, wind speeds experienced a noticeable fluctuation, peaking at 3.8 m/s (9 mph) in October before gradually tapering off. This trend suggests a seasonal cycle where winds are more pronounced during the transitional months of late autumn, while December ushers in a period of relative stillness. Interestingly, the wind speeds in December are consistent with those in both January and March, hinting at a predictable winter pattern that is characteristic of the region.

Average December Wind Speed in Ostrava

The chart displays monthly wind speed patterns in Ostrava, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.53.23.43.62.32.42.62.53.83.33.2 m/s
Data source: Ostrava December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Ostrava Compares to Other Months

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

December and January present notable differences in weather conditions. In December, temperatures range from a chilly minimum of -11°C (12°F) to an average of 1°C (35°F) and can reach a maximum of 14°C (58°F). The month sees a total precipitation of 68 mm (2.7 in) over approximately 14 days, resulting in a high humidity level of 91%. In contrast, January tends to be colder, with temperatures dipping to a minimum of -18°C (0°F) and averaging around 0°C (31°F). The maximum temperature is lower at 11°C (52°F), and precipitation decreases to 44 mm (1.7 in) over about 12 days, with humidity remaining relatively stable at 90%. For more detailed insights, you can explore Ostrava weather in January.

In December, temperatures in Ostrava typically range from a chilly minimum of -11°C (12°F) to a mild maximum of 14°C (58°F), with an average temperature around 1°C (35°F). This month experiences about 68 mm (2.7 in) of precipitation over approximately 14 days, accompanied by high humidity at 91%. In contrast, February sees even colder conditions, with minimum temperatures dropping to -18°C (0°F), while the maximum can reach 17°C (63°F), maintaining an average of 1°C (34°F). February is slightly drier, with around 57 mm (2.2 in) of precipitation over 12 days and a marginally lower humidity level of 87%. For more detailed insights, you can visit Ostrava weather in February.

In December, the weather is marked by milder temperatures, with averages around 1°C (35°F) and a maximum reaching 14°C (58°F), contrasting with the colder conditions of March, where lows drop to -20°C (-4°F) and highs peak at 20°C (69°F). December typically sees more precipitation, with about 68 mm (2.7 in) spread over 14 days, while March experiences slightly less at 52 mm (2.0 in) over 12 days. Humidity levels in December are higher at 91%, while in March, they decrease to 83%. For a detailed look at the weather trends in March, you can refer to Ostrava weather in March.

December and April present distinctly different weather patterns. In December, temperatures can drop to a minimum of -11°C (12°F) and average around 1°C (35°F), with a maximum of 14°C (58°F). Alongside this chill, December experiences significant precipitation of 68 mm (2.7 in) spread over 14 days, resulting in high humidity levels of 91%. In contrast, April sees milder conditions with temperatures ranging from a minimum of -6°C (22°F) to an average of 9°C (48°F) and a maximum of 27°C (80°F). Although it receives slightly less precipitation at 60 mm (2.4 in) over 10 days, the humidity drops to a more comfortable 76%. For a more detailed look at April's weather specifics, check out Ostrava weather in April.

In December, temperatures in Ostrava can drop as low as -11°C (12°F), with an average around 1°C (35°F) and a maximum reaching 14°C (58°F). The month sees about 68 mm (2.7 in) of precipitation spread over 14 days, accompanied by high humidity levels at 91%. In stark contrast, May brings much milder temperatures, with minimums around -2°C (29°F), averages climbing to 13°C (56°F), and maximums soaring to 29°C (84°F). This month experiences higher precipitation at 101 mm (4.0 in) over 16 days, but the humidity is significantly lower at 70%. For a detailed look at the weather, you can check out Ostrava weather in May.

December and June present strikingly different weather patterns. In December, temperatures can dip as low as -11°C (12°F), averaging around 1°C (35°F), and can reach a maximum of 14°C (58°F). The month is characterized by high humidity at 91% and about 68 mm (2.7 in) of precipitation spread over 14 days. In contrast, June offers a much warmer climate, with minimum temperatures of 5°C (41°F) and averages around 19°C (66°F), peaking at 32°C (90°F). Although June experiences slightly more precipitation at 86 mm (3.4 in) over the same number of rainy days, it boasts a significantly lower humidity level of 71%. For more detailed information, visit Ostrava weather in June.

December and July present stark contrasts in weather conditions. In December, temperatures range from a chilly minimum of -11°C (12°F) to a maximum of 14°C (58°F), with an average temperature of just 1°C (35°F). The month experiences significant humidity at 91% and about 68 mm (2.7 in) of precipitation over 14 days. In contrast, July offers much milder weather, with temperatures ranging from a minimum of 7°C (44°F) to a sweltering maximum of 35°C (95°F) and an average temperature of 19°C (67°F). Although July has a slightly higher total precipitation of 92 mm (3.6 in) over the same number of days, the humidity is notably lower at 67%. For more insights on July weather, you can visit Ostrava weather in July.

The weather in December and August presents a stark contrast in Ostrava. In December, temperatures can plunge to a minimum of -11°C (12°F) while averaging around 1°C (35°F) and occasionally reaching a maximum of 14°C (58°F). This month typically experiences high humidity at 91% and about 68 mm (2.7 in) of precipitation over 14 days. In comparison, August is significantly warmer, with temperatures ranging from a minimum of 7°C (45°F) to a comfortable average of 20°C (68°F), hitting highs of 33°C (92°F). August also sees more precipitation, totaling 112 mm (4.4 in) across the same number of days, but the humidity is notably lower at 64%. For more details on the weather in August, you can visit Ostrava weather in August.

In December, the weather in Ostrava is cold and crisp, with temperatures ranging from a minimum of -11°C (12°F) to a maximum of 14°C (58°F), and an average of around 1°C (35°F). The month experiences significant humidity at 91% and sees about 68 mm (2.7 in) of precipitation over 14 days, resulting in a damp atmosphere. In contrast, September brings a much milder climate, with temperatures varying from a minimum of 1°C (34°F) to a maximum of 30°C (87°F), averaging 15°C (59°F). Although it is slightly wetter with 103 mm (4.1 in) of precipitation over 13 days, the humidity is lower at 67%. For more details, you can check Ostrava weather in September.

In comparing the weather between October and December, October tends to be milder, with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 24°C (76°F), while in December, temperatures drop significantly, averaging 1°C (35°F) and peaking at 14°C (58°F). Precipitation is slightly higher in October, totaling 84 mm (3.3 in) over 11 days compared to December's 68 mm (2.7 in) across 14 days. Additionally, December experiences increased humidity at 91%, compared to 83% in October, contributing to a colder and more damp feel during the winter month. For more detailed weather insights, you can check Ostrava weather in October.

December typically brings colder temperatures compared to November, with minimums dropping to -11°C (12°F) and maximums reaching only 14°C (58°F), while November experiences slightly milder conditions with minimums around -8°C (17°F) and maximums peaking at 19°C (66°F). Precipitation levels also increase in December, accumulating to 68 mm (2.7 in) over 14 days, compared to November's 49 mm (1.9 in) spread over 9 days. Humidity levels remain quite high, with December averaging 91% and November slightly lower at 90%. For those interested in a more detailed look at November's weather, you can check out Ostrava weather in November.

Compare Ostrava's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Ostrava

As December settles over Ostrava, the weather transforms into a cooler and more humid experience compared to other months. With temperatures averaging around 1°C, along with occasional highs of 14°C and chilling lows dipping to -11°C, residents and visitors alike feel the seasonal shift. The month is characterized by a notable increase in precipitation, featuring about 14 rainy days that contribute to the high humidity level of 91%. This combination of cold and dampness sets December apart, wrapping the city in a crisp, wintry atmosphere that's perfect for enjoying festive activities. For a deeper dive into the climate trends in Ostrava, be sure to check out Ostrava Climate.