Last updated: August 27, 2025
December in Ljubljana, Slovenia offers a captivating blend of winter chill and festive charm. With temperatures ranging from a brisk -15°C (6°F) to a maximum of 14°C (58°F), the city experiences an average temperature of 2°C (36°F), inviting residents and visitors alike to bundle up. This month, Ljubljana sees around 121 mm (4.8 in) of precipitation over 10 days, contributing to the enchanting winter scenery. Humidity lingers at a notable 88%, wrapping the city in a cozy, atmospheric embrace. Whether it's exploring the twinkling lights or enjoying warm drinks at local cafes, December presents a unique opportunity to experience the charm of Slovenia's capital in its winter glory.
In December, Ljubljana, Slovenia, showcases the onset of winter with a notable dip in temperatures. The month begins with minimums plummeting to -15°C (6°F), reflecting a stark contrast to the milder autumn months. The average temperature settles at around 2°C (36°F), providing a chilly bite to the air, while highs reach a comfortable 14°C (58°F), allowing for occasional respite from the cold. Compared to the preceding months, where temperatures rarely dipped below zero, December's trend distinctly heralds the heart of winter, inviting residents and visitors alike to bundle up and enjoy the festive atmosphere that blankets this charming city in snow.
December in Ljubljana, Slovenia, wraps up the year with a notable 121 mm (4.8 in) of precipitation over an average of 10 days. This amount positions it as one of the wetter months, particularly following the trend of increasing rainfall throughout the autumn. Although December's precipitation trumps the summer months, it falls just short of November's 131 mm (5.2 in), which often brings a generous share of rain. The city's winter climate reveals a pattern of having higher rainfall during the colder months, with December continuing the trend of wetness established in the lead-up months, signaling a shift towards the damp, chilly atmosphere typical of Ljubljana's winter season.
December in Ljubljana, Slovenia, sees humidity levels returning to a rich 88%, reminiscent of the damp chill that characterizes the winter months. This spike comes on the heels of November's 89%, signaling that the city's air is laden with moisture as temperatures drop. Throughout the year, Ljubljana experiences a gradual decline in humidity from the high levels of winter and early spring, reaching a low of 51% in August. However, as autumn settles in, humidity begins to rise again, with December's levels nearly mirroring the starting humidity of January. This pattern highlights a pattern where the city's atmosphere fluctuates rhythmically, with high humidity maintaining a persistent presence during the colder months, offering a cozy, albeit damp, winter ambiance.
In December, Ljubljana experiences a notable drop in UV Index, reflecting the transition into winter. With a UV Index of 2, the exposure category is classified as low, indicating that residents and visitors can enjoy the outdoors without the usual sunburn risks. You can safely bask in the city’s scenic views for up to 45 minutes before needing to seek shade. This contrast highlights the city's UV variations throughout the year, with higher readings peaking in the summer months of June and July at 9. Understanding these trends is crucial for sun safety. For more detailed insights, explore the Ljubljana UV Index.
UV Risk Categories
As the year draws to a close, December in Ljubljana offers a gentle tapering of daylight with 209 hours of sunshine. This marks a slight decline from the bustling month of November, which basked in 212 hours of sunlight, yet still holds a charm of its own as the city prepares for the festive season. Notably, the winter month shines brighter than the beginning of the year, as January receives only 178 hours. The trend throughout the year reveals a gradual increase in sunlight, peaking in July with a radiant 427 hours, before descending back into the cozy embrace of shorter days as winter approaches. December, with its soft glow, invites residents and visitors alike to appreciate the beauty of Ljubljana's seasonal transition, making every ray a moment to cherish amidst the hustle and bustle of holiday preparations.
While December in Ljubljana typically ushers in the winter chill, the likelihood of sunny days is relatively modest, standing at just 29%. This represents a slight increase from November's 24%, suggesting that as the year draws to a close, there may be a faint glimmer of sunshine to brighten the winter landscape. However, the overall trend indicates that sunny weather becomes increasingly elusive as the colder months progress, with January trailing even lower at 23%. In contrast, the spring months show a notable upswing, peaking in March at 58%. Thus, while December may not be the most reliable month for sun, it offers a gentle reminder that brighter days are just around the corner.
As winter envelops Ljubljana in December, the city experiences its shortest days, with only 8 hours of daylight. This trend is part of a gradual decline that begins in the warm summer months of June and July, where daylight peaks at 15 hours. The transition from the longer days of spring and summer to the cozy embrace of winter showcases a beautiful rhythm of nature; daylight gently tapers from 14 hours in May to just 9 hours in November. Despite the challenges of reduced sunlight, December's intimate hours foster a unique charm, inviting the city’s residents and visitors to enjoy the festive spirit as they embrace the longer nights ahead.
As December sets in Ljubljana, the city experiences one of its calmest months in terms of wind, with an average speed of just 1.6 m/s (4 mph). This gentle breeze is a notable shift from the earlier months of the year, where wind speeds typically hover around 2.0 m/s (5 mph) to 2.5 m/s (6 mph). The trend reveals a gradual decrease in wind intensity as the year progresses, with the summer months of June to September, already showcasing the lowest winds, ranging between 1.6 to 1.8 m/s (4 mph). By the time December rolls around, the city's atmosphere feels serene and tranquil, providing a picturesque backdrop as the winter chill settles over its historic architecture and charming streets.
Weather in Ljubljana varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ljubljana, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January both experience cold temperatures, but January is slightly milder on average. In December, the temperature ranges from a minimum of -15°C (6°F) to a maximum of 14°C (58°F), with an average of 2°C (36°F). Precipitation during this month is relatively high at 121 mm (4.8 in), occurring over 10 days and accompanied by high humidity of 88%. In contrast, January sees a more moderate range with minimum temperatures of -12°C (11°F) and maximums reaching 12°C (54°F), averaging around 1°C (34°F). Precipitation drops significantly to 51 mm (2.0 in) over just 7 days, while humidity remains consistent at 88%. For more detailed information on the weather in January, please visit Ljubljana weather in January.
In December, temperatures can drop to as low as -15°C (6°F), with an average temperature around 2°C (36°F) and a maximum reaching 14°C (58°F). The month experiences significant precipitation, totaling 121 mm (4.8 in) over approximately 10 days, and humidity levels are quite high at 88%. In contrast, February offers slightly milder conditions, with minimum temperatures around -11°C (13°F) and an average of 4°C (39°F), peaking at 19°C (67°F). Precipitation decreases to 88 mm (3.5 in) over 9 days, and the humidity dips to 82%. For more details, check out Ljubljana weather in February.
In December, the weather is characterized by significantly colder temperatures, with a minimum of -15°C (6°F) and an average of just 2°C (36°F). The month experiences higher precipitation, totaling 121 mm over approximately ten days, accompanied by high humidity at 88%. In contrast, March brings a notable warming trend, with temperatures ranging from a minimum of -14°C (8°F) to a maximum of 22°C (71°F) and an average of 6°C (43°F). Precipitation decreases to 71 mm over the same number of days, and humidity drops to a more comfortable 73%. For more details on March weather, you can explore Ljubljana weather in March.
December and April present notably different weather conditions. In December, temperatures can drop to a minimum of -15°C (6°F) and only reach a maximum of 14°C (58°F) with an average of 2°C (36°F). Notably, the month experiences high humidity at 88% and receives about 121 mm (4.8 in) of precipitation over 10 days. In comparison, April shows a significant warming trend, with temperatures ranging from a minimum of -11°C (13°F) to a comfortable maximum of 26°C (79°F), and an average temperature of 10°C (51°F). Although April sees slightly more days of precipitation at 12 days, the total amount is less at 94 mm (3.7 in) and the humidity drops to 73%. For more information on the weather trends in April, visit Ljubljana weather in April.
In December, the weather is typically cold, with temperatures ranging from a frigid -15°C (6°F) at night to a mild 14°C (58°F) during the day, and an average temperature of around 2°C (36°F). The month is characterized by high humidity at 88% and receives about 121 mm (4.8 in) of precipitation over approximately 10 days.
In contrast, May welcomes significantly warmer weather, with temperatures ranging from a chilly 1°C (34°F) at night to a hot 28°C (82°F) during the day, yielding an average temperature of 14°C (58°F). This month sees increased rainfall, totaling 166 mm (6.5 in) over about 19 days, but the humidity is lower at 70%.
For more detailed information, check out Ljubljana weather in May.
In December, the weather is characterized by much colder temperatures, ranging from a minimum of -15°C (6°F) to a maximum of 14°C (58°F), with an average of around 2°C (36°F). The month sees about 121 mm (4.8 in) of precipitation over approximately 10 days, and the humidity is quite high at 88%, contributing to a chilly and damp atmosphere. In stark contrast, June boasts a much warmer climate with temperatures varying from a minimum of 6°C (43°F) to a peak of 34°C (94°F), averaging 20°C (68°F). Precipitation is lower at 84 mm (3.3 in) over 12 days, and the humidity drops to 69%, making June a more comfortable and pleasant month overall. For more details about June weather specifically, check out this link: Ljubljana weather in June.
December and July present stark contrasts in weather. December typically experiences a cold climate, with temperatures ranging from a frosty minimum of -15°C (6°F) to a mild maximum of 14°C (58°F) and an average of just 2°C (36°F). This month tends to be quite damp, with around 121 mm (4.8 in) of precipitation over approximately 10 days and a high humidity level of 88%. In contrast, July brings warmer conditions, with temperatures ranging from a comfortable minimum of 10°C (51°F) to a sweltering maximum of 34°C (93°F) and an average of 21°C (70°F). Although July has slightly less rainfall at 98 mm (3.9 in) spread across 13 days, its lower humidity at 63% contributes to a more pleasant experience. For more details, check the Ljubljana weather in July.
December and August present starkly contrasting weather conditions. In December, temperatures can plunge as low as -15°C (6°F), with an average of 2°C (36°F) and a maximum hitting only 14°C (58°F). The month is quite damp, with 121 mm (4.8 in) of precipitation over approximately 10 days and a high humidity level of 88%. In contrast, August boasts a much milder climate, featuring minimum temperatures of 8°C (47°F) and average highs around 21°C (70°F), peaking at a sweltering 35°C (96°F). Precipitation is slightly lower at 100 mm (3.9 in) spread over 12 days, accompanying a much more comfortable humidity level of 51%. For those curious about the specifics of August weather, further details can be found here: Ljubljana weather in August.
In December, the weather is significantly colder compared to September, with temperatures ranging from a low of -15°C (6°F) to a high of 14°C (58°F) and an average of just 2°C (36°F). This month sees higher humidity levels at 88% and experiences 121 mm (4.8 in) of precipitation over 10 days. In contrast, September boasts much milder conditions, with temperatures peaking at 29°C (85°F) and averaging 16°C (61°F). It also has a lower humidity level of 64% and slightly more precipitation at 159 mm (6.3 in) spread across 12 days. For more detailed information, you can check Ljubljana weather in September.
In comparing the weather between October and December, we see a significant shift in temperatures and overall conditions. October boasts a milder climate with average temperatures ranging from 0°C (31°F) to a pleasant 24°C (76°F), while December's temperatures plunge, with a minimum of -15°C (6°F) and an average of just 2°C (36°F). Precipitation is also slightly higher in December, with 121 mm (4.8 in) over about 10 days, compared to October's 98 mm (3.9 in) across 9 days. Furthermore, December's humidity rises to 88%, making the air feel colder than its temperatures suggest. For more details about weather conditions in October, you can visit this link: Ljubljana weather in October.
In comparing the weather between November and December, December tends to be much colder with an average temperature of 2°C (36°F) compared to November's warmer average of 6°C (44°F). The minimum temperatures drop significantly, from -6°C (22°F) in November to a chilling -15°C (6°F) in December. Additionally, both months experience considerable precipitation, with December recording 121 mm (4.8 in) over approximately 10 days, slightly less than November’s total of 131 mm (5.2 in) over 11 days. Humidity remains consistent, with December at 88% and November slightly higher at 89%. For more details on November's weather, you can check out Ljubljana weather in November.
As December unfolds in Ljubljana, the weather takes a notable turn, marking a shift from the milder autumn days to the chill of winter. Visitors can expect a sharp drop in temperatures, with averages hovering around the frosty 2°C and nighttime lows dipping to -15°C, making it one of the coldest months of the year. Additionally, the city experiences increased precipitation, with about 121 mm falling over 10 days, often in the form of rain or snow, contributing to the festive atmosphere as the holiday season approaches. The high humidity of 88% can make the cold feel more intense, contrasting sharply with the drier months preceding it. Despite the chill, December in Ljubljana is a charming time, inviting cozy gatherings and captivating winter scenery. To learn more about the city’s climate throughout the year, visit Ljubljana Climate.