December Weather in Stara Zagora, Bulgaria

Last updated: August 21, 2025

Stara Zagora experiences a chilly December, where temperatures range from a minimum of -8°C (18°F) to a maximum of 17°C (63°F), creating a stark contrast in the weather. The average temperature hovers around 4°C (40°F), ensuring a brisk atmosphere throughout the month. With 86 mm (3.4 in) of precipitation over 11 days, the month is characterized by high humidity levels at 87%, contributing to a damp, wintry environment. Whether you're braving the cold or enjoying the festive spirit, December in Stara Zagora offers a unique blend of winter charm and chilly conditions.

December Temperature in Stara Zagora

In Stara Zagora, Bulgaria, December marks the transition into deep winter, showcasing a notable drop in temperatures compared to the milder autumn months. With a minimum temperature of -8°C (18°F) and an average of only 4°C (40°F), the chill sets in firmly. While daytime highs reach a pleasant 17°C (63°F), the evenings often bring a crisp bite, highlighting the season's character. This month reflects a broader cooling trend observed from November, where the temperatures waver between -3°C (26°F) and 25°C (77°F), heralding the colder months ahead. As the year draws to a close, residents and visitors alike enjoy the tranquility that winter brings, juxtaposed with the seasonal variability that defines the region.

December Weather in Stara Zagora: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Stara Zagora, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stara Zagora, 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).
JanFebMarAprMayJunJulAugSepOctNovDec343944536269747568574739
Data source: Temperature data for Stara Zagora 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 Stara Zagora

In Stara Zagora, December marks a notable increase in precipitation, with 86 mm (3.4 in) of rainfall spread across 11 days. This uptick is a shift from the drier late summer and early autumn months, where August and September saw minimal precipitation, collecting only 23 mm and 18 mm, respectively. As the year draws to a close, December's wetter conditions prepare the landscape for winter, contrasting sharply with the earlier months. October and November provide a steady transition with 70 mm and 60 mm of rain, but December's precipitation not only surpasses these months but highlights the seasonal propensity for increased moisture, setting the stage for the coldest months ahead. The trend indicates a definitive wetting pattern, making December a critical time for replenishing local water reserves before the dry spell of late winter.

December Precipitation Trends in Stara Zagora

The chart displays monthly precipitation patterns in Stara Zagora, 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 Stara Zagora, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec5048704767104662318706086
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Stara Zagora

As December arrives in Stara Zagora, Bulgaria, the air becomes noticeably more humid, with levels rising to 87%. This slight increase follows a dip in the humidity seen during the summer months, where August recorded its lowest at 48%. Over the course of the year, the trend shows a gradual decline in humidity from the winter peak in January (88%) to the dry summer, before a mild recovery in the fall. As autumn transitions into winter, residents experience a return to a heavier, more moisture-laden atmosphere, reminiscent of the year's beginning. The seasonal shift reflects a rhythmic pattern, with December serving as a bridge between the dry warmth of summer and the cold, crisp days of winter.

December Average Humidity in Stara Zagora

This chart illustrates the average monthly humidity levels in Stara Zagora, 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 Stara Zagora is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%84%81%70%72%66%62%48%58%78%85%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Stara Zagora

In Stara Zagora, Bulgaria, the December UV Index drops to a low level of 2, signaling a significant decrease in ultraviolet radiation as winter sets in. This means residents can enjoy an extended burn time of 45 minutes without the immediate concern of sunburn, a stark contrast to the summer months where minimal exposure of just 15 minutes was needed under very high indices of 8 to 10. As the year transitions through its seasons, one can observe a clear trend: UV exposure begins low in winter, peaks dramatically in spring and summer, and then tapers off again in autumn and winter. For detailed information on UV levels throughout the year, visit Stara Zagora UV Index.

Maximum UV Index Levels in Stara Zagora for December

The chart shows the monthly maximum UV Index (UVI) for Stara Zagora 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 Stara Zagora typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997632
Data source: Stara Zagora 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 Stara Zagora

In Stara Zagora, Bulgaria, December marks the transition from the brighter days of summer to the quieter, reflective moments of winter. With 216 hours of sunshine, the month experiences a notable decline compared to the sun-drenched heights of July, which boasts an impressive 426 hours. This gradual decrease in sunlight mirrors the yearly rhythm, as the sunshine hours dip from 393 in May to their winter low. However, December's sunlight still offers a gentle glow amidst the chill, providing a soothing contrast to the long nights. As the year concludes, Stara Zagora embraces a cozy warmth, making each ray of sunshine a cherished moment before the onset of winter's embrace.

Monthly Sunshine Duration in Stara Zagora: December Highlighted

The December sunshine duration represents the total number of hours Stara Zagora 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.
JanFebMarAprMayJunJulAugSepOctNovDec172h231h286h345h393h401h426h404h342h289h231h216h
Data source: Stara Zagora December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Stara Zagora During December

In December, Stara Zagora experiences a 31% chance of sunny weather, marking a slight dip in sunshine compared to the preceding months. As the year progresses from the bright heights of July and August, where sunny probabilities soar to 79% and 75% respectively, the likelihood of clear skies steadily declines. The trend suggests that while December offers a modest chance for sunshine, it's notably less than the vibrant spring months, such as April and May, which maintain a steady 44-45% sunlight probability. As winter sets in, residents and visitors alike should prepare for a mix of clouds and occasional sun, embracing the cooler, yet still charming December days in this picturesque Bulgarian city.

Percentage of Sunny Days in December in Stara Zagora

The chart illustrates the percentage of sunny days in Stara Zagora 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 Stara Zagora experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%47%44%44%45%47%79%75%54%38%35%31%
Data source: Stara Zagora December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Stara Zagora in December

As the year unfolds in Stara Zagora, Bulgaria, December marks a return to shorter days, with daylight lasting a mere 9 hours—mirroring the twilight of January and November. In contrast, the spring and summer months see a noticeable increase, peaking in June at a generous 15 hours of daylight, inviting longer outdoor excursions and vibrant activities. The gradual shift from January's cold embrace to the much brighter April with 13 hours of daylight highlights the transition into the sun-drenched summer. As days progressively lengthen from winter’s grip, the rhythm of daylight serves as a reminder of nature's cyclical beauty, offering Stara Zagora’s residents a blend of cozy winter nights and the anticipation of longer, sunlit afternoons.

Average Daylight Hours in Stara Zagora for December

The chart illustrates the variation in daylight duration in Stara Zagora throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 27m10h 33m11h 57m13h 23m14h 36m15h 13m14h 53m13h 49m12h 26m11h 1m9h 45m9h 6m
Data source: Stara Zagora daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Stara Zagora

As December arrives in Stara Zagora, Bulgaria, the wind picks up slightly, averaging 2.2 m/s (5 mph), mirroring the reliable breeziness seen earlier in the year. After a noticeable dip in November with its lowest average of 1.6 m/s (4 mph), December's winds breathe life back into the atmosphere, consistent with many months throughout the year. From the gentle April breezes to the slightly more spirited currents in July and August, the monthly averages suggest a generally mild and steady wind pattern. This consistency, especially during the winter months, makes Stara Zagora a charming destination where the fresh, crisp air enhances the beauty of the season.

Average December Wind Speed in Stara Zagora

The chart displays monthly wind speed patterns in Stara Zagora, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.22.31.92.21.72.32.02.12.11.62.2 m/s
Data source: Stara Zagora December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Stara Zagora Compares to Other Months

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

In December, temperatures in Stara Zagora typically range from a minimum of -8°C (18°F) to a maximum of 17°C (63°F), with an average of 4°C (40°F). The month experiences 86 mm (3.4 in) of precipitation over approximately 11 days and maintains a humidity level of 87%. In contrast, January sees a drop in temperatures, with a minimum of -15°C (6°F) and a maximum of 15°C (60°F), averaging around 1°C (35°F). This month has less precipitation, totaling 50 mm (2.0 in) over just 8 days, while humidity remains slightly higher at 88%. For a detailed look at January weather, check out Stara Zagora weather in January.

December weather features a broader temperature range, with minimums dropping to -8°C (18°F) and maximums reaching up to 17°C (63°F), while February sees even colder minimums at -10°C (14°F) but slightly warmer maximums peaking at 19°C (66°F). Both months share an average temperature of around 4°C (40°F), but December experiences more precipitation, with 86 mm (3.4 in) over 11 days compared to February's 48 mm (1.9 in) over 8 days. Additionally, humidity levels are relatively high in both months, with December at 87% and February slightly lower at 84%. For more details, you can check Stara Zagora weather in February.

In comparing the weather between December and March, December tends to be milder overall, with average temperatures ranging from a minimum of -8°C (18°F) to a maximum of 17°C (63°F). It experiences higher humidity at 87% and more considerable precipitation, totaling 86 mm (3.4 in) over 11 days. In contrast, March showcases a more significant temperature range, with minimum temperatures dipping to -18°C (0°F) and maximums reaching 22°C (72°F), resulting in a chillier average of 7°C (44°F). Precipitation in March is slightly lower at 69 mm (2.7 in), also spread over 11 days, and features decreased humidity at 81%. For more detailed information, check out Stara Zagora weather in March.

In December, temperatures can drop to a chilly minimum of -8°C (18°F), with an average around 4°C (40°F) and a maximum of 17°C (63°F). The month is characterized by higher precipitation, totaling 86 mm (3.4 in) over 11 days, and a high humidity level of 87%, creating a cold and damp atmosphere. In contrast, April sees a much milder climate, with temperatures ranging from a minimum of -1°C (30°F) to an average of 11°C (53°F), reaching a pleasant maximum of 27°C (81°F). Precipitation is less frequent, with only 47 mm (1.9 in) over 9 days and lower humidity at 70%. Overall, April offers a stark contrast to the cold and wet December, heralding the arrival of spring. For more details, please visit Stara Zagora weather in April.

December and May present significantly contrasting weather conditions. In December, temperatures can drop to a chilling minimum of -8°C (18°F), with an average of 4°C (40°F) and a maximum around 17°C (63°F). The month is characterized by high humidity at 87%, along with moderate precipitation of 86 mm (3.4 in) spread over 11 days. In comparison, May brings a far more hospitable climate, featuring milder temperatures with a minimum of 4°C (40°F) and an average soaring to 17°C (63°F), peaking at a warm 32°C (89°F). Precipitation in May diminishes to 66 mm (2.6 in) over 12 days, and humidity decreases to 72%. For those seeking more detailed information, you can visit Stara Zagora weather in May.

December and June present a stark contrast in weather conditions. December features colder temperatures, with an average of 4°C (40°F) and lows that can drop to -8°C (18°F), while June offers a much warmer climate, boasting an average of 21°C (69°F) and highs reaching up to 36°C (96°F). Precipitation is also notable in both months, with December receiving 86 mm (3.4 in) over approximately 11 days and June experiencing slightly more at 104 mm (4.1 in) across about 16 days. Additionally, June's humidity is lower at 66%, compared to December's higher humidity level of 87%. For a detailed look at June weather specifics in Stara Zagora, visit Stara Zagora weather in June.

The weather in December and July presents a striking contrast. December temperatures range from a chilling minimum of -8°C (18°F) to a maximum of 17°C (63°F), with an average of 4°C (40°F). This month also experiences higher humidity at 87% and significant precipitation of 86 mm (3.4 in) over 11 days. In contrast, July boasts much warmer conditions, with temperatures ranging from a minimum of 12°C (54°F) to a scorching maximum of 38°C (100°F) and an average of 23°C (74°F). The humidity drops to 62%, and there’s less rainfall, totaling 66 mm (2.6 in) over just 10 days. For more information, check out Stara Zagora weather in July.

December and August present strikingly different weather conditions. In December, temperatures range from a chilly -8°C (18°F) at the minimum to a mild 17°C (63°F) at its peak, with an average of 4°C (40°F). This month also experiences significant precipitation of 86 mm (3.4 in) over 11 days, fueled by high humidity levels of 87%. In contrast, August boasts a much warmer climate, with temperatures soaring from a minimum of 12°C (53°F) to a maximum of 39°C (103°F), averaging 24°C (76°F). Rainfall is minimal at just 23 mm (0.9 in) over 6 days, accompanied by lower humidity levels of 48%. For a detailed look at the weather in August, check out Stara Zagora weather in August.

December and September present contrasting weather patterns. In December, the temperatures range from a chilly minimum of -8°C (18°F) to a maximum of 17°C (63°F), with an average of 4°C (40°F). The month sees considerable precipitation, totaling 86 mm (3.4 in) over 11 days, and humidity is notably high at 87%. In stark contrast, September offers much milder conditions, with minimum temperatures around 3°C (38°F) and maximums soaring to 35°C (95°F). The average temperature for September is a warm 20°C (68°F), accompanied by only 18 mm (0.7 in) of rain across just 4 days and lower humidity at 58%. For a detailed look at September's weather in Stara Zagora, you can visit Stara Zagora weather in September.

In December, temperatures in Stara Zagora drop significantly, with a range from a chilly -8°C (18°F) at night to a mild 17°C (63°F) during the day, resulting in an average of just 4°C (40°F). In contrast, October enjoys much warmer temperatures, with minimums around 1°C (34°F) and maximums soaring to 32°C (90°F), averaging 14°C (57°F). Additionally, December experiences more rainfall, totaling 86 mm (3.4 in) over 11 days, compared to October's 70 mm (2.7 in) across just 7 days. The humidity also peaks in December at 87%, creating a damp, cool atmosphere, whereas October feels a bit drier at 78%. For a closer look at the specific weather conditions of October, you can refer to Stara Zagora weather in October.

When comparing the weather of December to November, it is clear that December experiences colder temperatures overall, with a minimum of -8°C (18°F) compared to November's minimum of -3°C (26°F). The average temperature in December drops to 4°C (40°F), while November's average is warmer at 8°C (47°F). Additionally, December sees more significant precipitation, totaling 86 mm (3.4 in) over 11 days, whereas November receives 60 mm (2.4 in) across 8 days. Humidity levels are relatively similar, with December at 87% and November at 85%. For more detailed information on November's weather conditions, you can check Stara Zagora weather in November.

Compare Stara Zagora's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Stara Zagora

As December ushers in winter, Stara Zagora experiences a notable shift from the milder temperatures of previous months. The average temperature dips to a chilly 4°C (40°F), while the contrast between day and night becomes more pronounced, with lows often reaching -8°C (18°F). This month is marked by increased humidity levels at 87%, and the likelihood of rain persists, as evidenced by nearly half the month seeing precipitation. For those keen on understanding how December fits into the broader climatic landscape, you can explore more at Stara Zagora Climate.