Last updated: August 27, 2025
December in Sibiu, Romania, brings a chilly embrace as temperatures fluctuate between a maximum of 12°C (54°F) and a biting minimum of -15°C (5°F), with an average hovering around 0°C (33°F). This wintry month is marked by high humidity levels at 90%, creating a crisp atmosphere ideal for embracing the festive season. Visitors can expect frequent precipitation, totaling 87 mm (3.4 in) over approximately 16 days, contributing to the enchanting, snow-laden landscapes that characterize this picturesque Transylvanian city during winter.
As December rolls into Sibiu, Romania, the winter chill firmly establishes itself, with temperatures ranging from a brisk -15°C (5°F) at night to a mild 12°C (54°F) during the day. The month presents a stark contrast to the milder autumn months, as average temperatures hover around 0°C (33°F), marking a clear descent into winter. As the last month of the year unfolds, residents and visitors alike can expect the landscape to transform into a winter wonderland, setting the perfect backdrop for festive celebrations. While daytime highs may feel relatively comfortable, the frigid nights remind everyone that winter has truly arrived, contributing to a magical seasonal experience in this charming Romanian city.
December in Sibiu, Romania, marks a significant shift in precipitation patterns, with an average rainfall of 87 mm (3.4 in) spread over 16 days. This increase sets December apart as one of the wetter months of the year, contrasting sharply with the drier spells observed in October and November. As temperatures begin to drop, the frequency of rainy days rises, contributing to the overall winter ambiance. This uptick in moisture not only prepares the region for the frigid January ahead but also underscores the transition into a more stable winter climate, paving the way for potential snowfall later in the season. The consistent increase in precipitation during December reflects the region's shift towards a colder, wetter climate, highlighting the changing weather patterns as the year comes to a close.
In Sibiu, Romania, the month of December brings a notable humidity level of 90%, creating a chilly and damp atmosphere as winter settles in. This figure reflects a slight uptick from November's 88%, continuing the trend of increased humidity during the colder months. As the year progresses, humidity generally decreases from a high of 91% in January to its lowest of 51% in August, building up again as autumn approaches. Thus, December's humidity marks a return to the dampness typical of the winter season, wrapping the city in a cozy, if somewhat muggy, embrace just in time for the holidays.
In Sibiu, Romania, the UV Index in December reflects a significant drop, registering at 2, which places it in the low exposure category. This is a welcome reprieve from the soaring values seen during the summer months, where the UV Index peaks at 9, demanding vigilant sun protection and allowing for only 15 minutes of safe exposure. As the year transitions from the sun-drenched summer to the cooler winter, the burn time extends to 45 minutes in December, making outdoor activities more comfortable without the constant worry of UV damage. Overall, the trend across the months illustrates a clear shift from very high UV exposure during the warmer seasons to moderate and low levels in the colder months. For more detailed insights, you can explore the Sibiu UV Index.
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In the heart of winter, December in Sibiu, Romania, begins to capture the gradual dimming of daylight with approximately 175 hours of sunshine. Although this marks a drop from the vibrant 377 hours seen in May, the city still holds on to a warm glow, especially when compared to the preceding months. With November trailing closely at 214 hours, the transition into December is a reminder of the seasonal shifts, yet plenty of sunny moments remain to brighten the holiday spirit. As winter unfolds, Sibiu's charming architecture and festive atmosphere become even more inviting, making the relatively gentle sunshine of December an essential part of its allure.
In Sibiu, Romania, December marks a significant decline in the likelihood of sunny weather, with only a 16% chance of sunshine. This drop is a stark contrast to the sunnier months preceding it, particularly July and August, which boast over 50% chances of clear skies. As winter sets in, the trend reveals a gradual decrease in sun exposure throughout the months, from October’s 49% down to December’s dismal figure. This pattern suggests that while the earlier part of the year exhibits a fair amount of sunny days, winter envelops Sibiu in cloudier, more subdued conditions, making December a month where residents might want to embrace indoor activities.
As December settles in Sibiu, Romania, the days grow shorter, with only 8 hours of daylight illuminating the picturesque winter landscape. This decline in sunlight follows a gradual trend, beginning with 9 hours in November and marking the region's transition into the coldest months. The daylight duration reaches its zenith in the summer, peaking at 15 hours in June and July, but as the year comes to a close, the daylight diminishes, reminiscent of the fleeting warmth of autumn. This seasonal ebb and flow not only shapes the outdoor activities enjoyed by residents but also underscores the enchanting cyclical nature of life in Sibiu, where each month brings its own unique ambiance.
As December arrives in Sibiu, Romania, the wind whispers gently through the streets, maintaining an average speed of 1.9 m/s (4 mph), consistent with the mild breezes of the preceding months. Notably, the wind speed remains relatively stable throughout the winter season, echoing the calmness felt during January and February. While slightly tapering off in the warmer months of June and July, the wind returns to its familiar pace as the year draws to a close. This steady atmospheric rhythm highlights the peaceful charm of Sibiu, making it an ideal time for winter strolls through its picturesque old town, where the cool air invigorates the festive spirit of the season.
Weather in Sibiu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sibiu, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January both present cold weather, but January is notably harsher. In December, temperatures range from a minimum of -15°C (5°F) to a maximum of 12°C (54°F), with an average of 0°C (33°F). The month experiences 87 mm (3.4 in) of precipitation over 16 days, combined with a humidity level of 90%. In contrast, January sees even colder conditions, with a minimum temperature dropping to -26°C (-15°F) and an average of -3°C (27°F). Although January has a slight increase in the maximum temperature to 13°C (56°F), it features significantly lower precipitation, at 44 mm (1.7 in) over 9 days, and a humidity level of 91%. For more details on the conditions in January, you can visit Sibiu weather in January.
In December, temperatures can dip to a minimum of -15°C (5°F) and reach a maximum of 12°C (54°F), with an average temperature sitting at 0°C (33°F). The month experiences significant precipitation, totaling 87 mm (3.4 in) over approximately 16 days, and the humidity is relatively high at 90%. In contrast, February shows slightly colder minimum temperatures of -17°C (2°F), but it can warm up to a maximum of 16°C (61°F), maintaining the same average temperature of 0°C (33°F). Additionally, February sees less precipitation, with only 58 mm (2.3 in) falling over 11 days, and a lower humidity level of 86%. For more details on February weather, you can check Sibiu weather in February.
December and March present quite different weather patterns, despite their proximity in the winter season. In December, temperatures can drop as low as -15°C (5°F), with an average around 0°C (33°F) and a maximum of 12°C (54°F). The month experiences about 87 mm (3.4 in) of precipitation over 16 days, coupled with high humidity levels at 90%. In contrast, March brings a slight warming trend, with temperatures ranging from a minimum of -14°C (8°F) to a maximum of 21°C (70°F), and an average of 3°C (38°F). Precipitation decreases to 76 mm (3.0 in) over 13 days, and humidity is lower at 83%. For more detailed information on March weather, you can visit Sibiu weather in March.
December and April present markedly different weather conditions. In December, temperatures can plunge as low as -15°C (5°F), with an average of around 0°C (33°F) and a high of 12°C (54°F). This month also tends to be quite humid, with humidity levels reaching up to 90% and significant precipitation of 87 mm (3.4 in) over 16 days. In contrast, April witnesses a warming trend, with minimum temperatures of -8°C (18°F) and averages around 8°C (47°F), peaking at a much milder 24°C (75°F). Precipitation in April decreases to 62 mm (2.4 in) over 11 days, and humidity levels drop to a more comfortable 74%. For more detailed insights, check out Sibiu weather in April.
December and May exhibit stark contrasts in weather. In December, temperatures can plummet to a minimum of -15°C (5°F), with an average around 0°C (33°F) and maximums reaching up to 12°C (54°F). The cold month experiences high precipitation totaling 87 mm (3.4 in) over 16 days, accompanied by a humidity level of 90%, giving it a chilly and damp feel. In contrast, May brings a significant warming trend, starting with minimum temperatures at 0°C (33°F) and peaking at 27°C (80°F) with an average of 13°C (56°F). Although May registers a higher total precipitation of 147 mm (5.8 in) over 19 days, the humidity drops to 70%, resulting in a more comfortable atmosphere. For a more detailed look at what to expect during this vibrant spring month, check out Sibiu weather in May.
December and June present a striking contrast in weather. In December, temperatures plummet with a minimum of -15°C (5°F) and an average temperature hovering around 0°C (33°F), while reaching a maximum of only 12°C (54°F). The month experiences considerable precipitation, totaling 87 mm (3.4 in) over 16 days, accompanied by high humidity at 90%. In contrast, June brings a warm and inviting climate, where temperatures range from a minimum of 5°C (41°F) to a maximum of 30°C (86°F), with an average of 17°C (63°F). Although June receives more precipitation at 148 mm (5.8 in) over 17 days, the humidity is significantly lower at 67%. For more details about the weather in June, you can visit Sibiu weather in June.
The weather in December contrasts sharply with that of July, highlighting the significant seasonal differences. In December, temperatures can drop to a chilling minimum of -15°C (5°F) and average around 0°C (33°F), while July boasts much warmer conditions, with minimums of 7°C (45°F) and average highs reaching 19°C (66°F), peaking at 31°C (88°F). Precipitation is fairly consistent between the two months, with December receiving 87 mm (3.4 in) over 16 days and July slightly wetter at 128 mm (5.0 in) across 17 days. Additionally, December's humidity is notably high at 90%, compared to the more moderate 65% in July. For more detailed insights about July weather specifically, you can check Sibiu weather in July.
December and August present contrasting weather conditions. In December, temperatures can plummet as low as -15°C (5°F), with an average around 0°C (33°F) and a maximum reaching 12°C (54°F). The month is characterized by high humidity at 90% and frequent precipitation, occurring on about 16 days for a total of 87 mm (3.4 in). In contrast, August experiences much milder temperatures, with a minimum of 7°C (45°F), an average of 20°C (67°F), and highs soaring up to 33°C (92°F). Although August receives slightly more precipitation at 97 mm (3.8 in), it falls over fewer days, only 11 days, and the humidity is significantly lower at 51%. For more details, check out Sibiu weather in August.
In December, the weather is markedly colder, with temperatures ranging from a frigid minimum of -15°C (5°F) to a maximum of 12°C (54°F) and an average of around 0°C (33°F). The month sees significant precipitation, with 87 mm (3.4 in) falling over 16 days, coupled with high humidity levels of 90%. In contrast, September offers much milder conditions, featuring temperatures that vary from a minimum of -2°C (28°F) to a warm maximum of 30°C (87°F), with an average temperature of 15°C (59°F). Precipitation in September is lower, at 62 mm (2.4 in), over 10 days, and the humidity is notably more comfortable at 58%. For a closer look at September's weather patterns, you can visit Sibiu weather in September.
When comparing the weather in December and October, it's clear that December is significantly colder. In December, temperatures can drop as low as -15°C (5°F) with an average around 0°C (33°F), whereas October enjoys much milder temperatures, ranging from a minimum of -3°C (27°F) to a maximum of 25°C (78°F). Additionally, December experiences more precipitation, totaling 87 mm (3.4 in) over 16 days, compared to October's 56 mm (2.2 in) over just 8 days. The humidity in December is also higher, sitting at 90% compared to October's 80%, contributing to the overall chill of the winter month. For more details about October's climate, you can visit Sibiu weather in October.
In comparing the weather of December and November, it is clear that December experiences significantly colder temperatures, with a minimum of -15°C (5°F) and an average of 0°C (33°F), contrasted with November's milder minimum of -7°C (20°F) and average of 5°C (42°F). Additionally, December is wetter, receiving 87 mm (3.4 in) of precipitation over 16 days, while November has only 50 mm (2.0 in) over 10 days. Humidity remains high in both months, with December at 90% compared to November's 88%. For more detailed insights into November's conditions, you can check Sibiu weather in November.
As December settles in, Sibiu's weather transforms dramatically, presenting a colder and wetter backdrop compared to other months. The average temperatures hover around the freezing point, with chilling lows that remind residents of winter's full embrace. Rain and snow become more frequent, contributing to the 87 mm of precipitation that falls over approximately 16 days. Humidity peaks at a damp 90%, enhancing the often brisk air. While the allure of festive lights and seasonal charm grips the city, December's climate starkly contrasts with the milder and drier months that precede it. For a deeper dive into how Sibiu’s weather evolves throughout the year, explore Sibiu Climate.