Last updated: August 27, 2025
In December, Slovenia transforms into a winter wonderland, with a maximum temperature reaching 11°C (51°F), while the average hovers around 0°C (32°F). The chill can plunge as low as -14°C (8°F), inviting a cozy atmosphere perfect for winter activities. With precipitation measuring 179 mm (7.0 in) across 10 days, expect a mix of rain and snowfall, enhancing the region's picturesque landscapes. High humidity levels at 89% contribute to a brisk and refreshing climate, making December an enchanting month to explore Slovenia's natural beauty and festive spirit.
In December, Slovenia experiences a stark transition into winter as temperatures plummet. With a minimum of -14°C (8°F) and an average hovering around 0°C (32°F), the month marks the beginning of a chillier season compared to the preceding months. While daytime highs can reach up to 11°C (51°F), the nights are much colder, reflecting a notable dip from the milder autumn temperatures. This trend of dropping temperatures is consistent as the year closes, paving the way for snow-capped landscapes and cozy indoor gatherings. As winter firmly takes hold, the engaging contrast between the bright holiday festivities and the serene, frosty environment makes December a magical time to embrace Slovenia's seasonal beauty.
In December, Slovenia typically experiences 179 mm (7.0 in) of precipitation across an average of 10 days, making it a significant month for rainfall as the year comes to a close. This amount falls just short of November's 200 mm, yet it maintains the trend of increased moisture during the late autumn and early winter months. The precipitation pattern throughout the year shows a marked rise, with late spring and early summer often receiving the highest totals, peaking at 219 mm (8.6 in) in May. As December gives way to winter, this consistent rainfall lays the foundation for snow in the higher elevations, adding a wintry charm to the Slovenian landscape.
In December, Slovenia experiences a humidity level of 89%, marking a slight drop from the preceding months of October and November, which saw higher readings of 88% and 90%, respectively. This subtle dip aligns with a downward trend in humidity as the year progresses, reflecting the region's transition into winter. However, December's humidity remains notably high compared to the warmer months, such as August with its lowest average of 68%. As the year draws to a close, the consistent moisture in the air not only influences the climate but also contributes to Slovenia’s enchanting winter landscapes, making it a season of both comfort and charm.
As December arrives in Slovenia, the UV Index dips to 2, indicating a low exposure category with a burn time of 45 minutes. This marks a soothing contrast to the peak summer months, where the Index soared to 9 in July and June, demanding caution and proactive sun protection. Notably, the year witnesses an upward trend from the low levels of winter to the heights of summer, reaching 8 in May and August. As winter sets in, the focus shifts from sunbathing to embracing seasonal activities, allowing residents and visitors alike to enjoy the crisp, cool air without the worry of sunburn. For more insights on UV levels throughout the year, check out the UV Index.
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As December wraps up the year in Slovenia, it brings a gentle decline in sunshine hours with just 198 hours on average. This marks a subtle dip from November’s 199 hours, reflecting the transition into winter’s embrace. The trend of shortening days is accentuated when compared to the sparkling energy of summer months, where July basks in the highest glory with 409 hours. While December may not shine as brightly as its warmer counterparts, it offers a cozy charm that invites reflection and warmth, showcasing the beauty of Slovenia’s winter landscape beneath its soft, cloudy skies.
In December, Slovenia experiences a 35% chance of sunny weather, marking a slight uptick from the dim days of November, which sees only 27% sunshine. As winter approaches, the sun's presence becomes less predictable, with the likelihood of sunny days varying across the months. Notably, December's chances are lower than the early spring months, where sunshine is more readily available, peaking at 53% in March. Overall, while December isn't the sunniest month, it offers a modest opportunity for bright days amidst the winter chill, suggesting a lingering flicker of sunlight as the year comes to a close.
As we move through the year in Slovenia, daylight duration reflects the changing seasons in a captivating rhythm. December, with its 8 hours of daylight, represents the twilight of the year, where the sun makes a brief but precious appearance. This marks a noticeable decrease from the more generous 14 hours in May and 15 hours during the summer months of June and July. The transition from the vibrant sunlit days of spring to the hibernation of winter is evident as daylight diminishes from 11 hours in March to the year's darkest days in December. The gradual shift highlights the beauty of seasonal variation, inviting reflections on the cozy charm of Slovenia's December while eagerly anticipating the return of longer days in the coming months.
In December, Slovenia experiences a gentle breeze, with an average wind speed of 1.6 m/s (4 mph), maintaining a trend of consistent wind patterns throughout the year. The month stands out with a slight increase from the calmer summer months of June through August, when winds hovered around 1.5 m/s (3 mph). As the seasons transition, the wind begins to pick up slightly in the fall, reaching its peak in October at 1.9 m/s (4 mph), before settling back to December’s mild conditions. This gradual rise and fall creates a refreshing yet serene atmosphere during the winter, perfect for enjoying Slovenia's picturesque landscapes amid the crisp air.
Weather in varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in , focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January both feature cold temperatures, with January slightly colder on average. In December, temperatures range from a minimum of -14°C (8°F) to a maximum of 11°C (51°F), whereas January experiences a similar minimum of -14°C (7°F) but a lower maximum of 8°C (47°F). Precipitation in December is notably higher at 179 mm (7.0 in) over 10 days compared to January's 65 mm (2.6 in) over just 6 days. January also sees a marginally higher humidity level at 91%, compared to December's 89%. For more details, you can check the weather in January.
In December, temperatures typically range from a chilly -14°C (8°F) at night to a maximum of 11°C (51°F) during the day, resulting in an average temperature of around 0°C (32°F). This month also sees a significant amount of precipitation, with 179 mm (7.0 in) spread over 10 days, and the humidity levels sit at a high 89%.
In contrast, February experiences slightly colder nights with a minimum temperature of -17°C (2°F), while the daytime highs can reach up to 16°C (62°F), yielding an average of 1°C (34°F). Precipitation is less frequent in February, totaling 122 mm (4.8 in) over 9 days, and humidity remains fairly consistent at 87%. For a detailed look at weather patterns, you can find more information on weather in February.
December and March both feature cold temperatures, but the weather conditions vary significantly. In December, the temperatures range from a chilling -14°C (8°F) at night to a milder 11°C (51°F) during the day, averaging around 0°C (32°F). This month also sees considerable precipitation, with 179 mm (7.0 in) falling over 10 days, coupled with high humidity at 89%.
In contrast, March experiences a greater temperature fluctuation, with nighttime lows of -17°C (2°F) and daytime highs soaring up to 20°C (68°F), leading to an average of 4°C (39°F). While March has slightly less precipitation at 113 mm (4.5 in) spread across 11 days, the humidity decreases to 82%. For more detailed information, you can check the weather in March.
December weather is characterized by cold temperatures, with a minimum of -14°C (8°F) and an average around freezing at 0°C (32°F), making it feel quite chilly. The month experiences significant precipitation totaling 179 mm (7.0 in) over approximately 10 days, paired with high humidity levels of 89%. In contrast, April ushers in a noticeable warming trend, with temperatures ranging from a minimum of -10°C (15°F) to an enjoyable maximum of 24°C (76°F). Precipitation in April is slightly lower at 155 mm (6.1 in) but occurs over more days, totaling 14. The humidity also drops to 79%, offering a fresher feel. For a more detailed look, see the weather in April.
December and May present contrasting weather patterns, each with its own unique characteristics. In December, temperatures can drop as low as -14°C (8°F), with an average around freezing at 0°C (32°F) and maximums reaching only 11°C (51°F). The month is marked by high humidity at 89% and significant precipitation, totaling 179 mm (7.0 in) over approximately 10 days. In contrast, May offers a much milder climate, with minimum temperatures around -1°C (31°F) and average highs soaring to 24°C (75°F). Though May sees increased overall precipitation at 219 mm (8.6 in) across 23 days, the lower humidity of 74% contributes to a more comfortable atmosphere. For a detailed overview of the differences, check out weather in May.
December and June present starkly contrasting weather conditions. In December, temperatures range from a chilly -14°C (8°F) at their lowest to a mild 11°C (51°F) at their highest, with an average hovering around 0°C (32°F). This month is characterized by high humidity at 89% and significant precipitation, totaling 179 mm (7.0 in) over approximately 10 days. In contrast, June features much warmer temperatures, with lows of 4°C (39°F) and highs soaring up to 33°C (92°F), and an average temperature of 18°C (64°F). Although June sees higher precipitation on more days—totaling 143 mm (5.6 in) across 17 days—the lower humidity at 75% contributes to a more comfortable atmosphere. For more detailed information, visit weather in June.
December and July present stark contrasts in weather conditions. In December, temperatures can plunge to a minimum of -14°C (8°F), with an average of 0°C (32°F) and a maximum of 11°C (51°F). This month is characterized by high humidity at 89% and considerable precipitation, totaling 179 mm (7.0 in) over approximately 10 days. In contrast, July enjoys much milder temperatures, with a minimum of 9°C (48°F), an average of 19°C (66°F), and a maximum of 30°C (87°F). While July also sees significant rainfall at 163 mm (6.4 in), it falls across more days, totaling 19 days of precipitation, and the humidity is notably lower at 74%. For a detailed look at July weather, visit weather in July.
December and August present stark contrasts in weather conditions. In December, temperatures can plummet to a minimum of -14°C (8°F) and generally hover around freezing point, with an average of 0°C (32°F) and a maximum of 11°C (51°F). The month is characterized by high humidity levels at 89% and significant precipitation, totaling 179 mm (7.0 in) over approximately 10 days. In contrast, August brings much warmer temperatures, with a minimum of 7°C (45°F), an average of 19°C (67°F), and a high of 31°C (88°F). While precipitation is slightly lower at 172 mm (6.8 in), it occurs over more days, totaling 17. Humidity also decreases to 68%. These differences highlight the dramatic seasonal variation in climate. For more details about the conditions during this month, check out weather in August.
In December, the weather is significantly colder than in September, with temperatures ranging from a chilly -14°C (8°F) at night to a mild 11°C (51°F) during the day, while September enjoys a much warmer average of 14°C (58°F) and highs reaching 26°C (78°F). Precipitation is similar in both months, with December receiving 179 mm (7.0 in) over approximately 10 days compared to September's 189 mm (7.4 in) over 15 days. Additionally, December's higher humidity at 89% contrasts with September's more moderate 74%, contributing to a damp and crisp winter atmosphere distinct from the milder, transitioning weather of early autumn. For further details, you can check the weather in September.
December weather contrasts significantly with that of October. In December, temperatures can plummet to a minimum of -14°C (8°F) with an average hovering around 0°C (32°F), while October maintains a milder climate with a minimum of -2°C (29°F) and an average of 10°C (50°F). Precipitation also rises in December, totaling 179 mm (7.0 in) over approximately 10 days, compared to 143 mm (5.6 in) across 11 days in October. Humidity levels remain comparably high in both months, with December at 89% and October at 88%. For a detailed look at the conditions, you can check the link: weather in October.
In comparing the weather of December to that of November, we can see notable differences in temperature and precipitation patterns. December experiences lower temperatures with a minimum of -14°C (8°F), an average of 0°C (32°F), and a maximum of 11°C (51°F), while November is milder, featuring a minimum of -11°C (12°F), an average of 5°C (41°F), and a maximum of 16°C (62°F). Additionally, December has slightly less precipitation, totaling 179 mm (7.0 in) over 10 days, compared to November's 200 mm (7.9 in) across 12 days. Humidity remains high in both months, with December at 89% and November at 90%. For a more detailed overview, you can check the weather in November.
As December settles in, it brings a notable shift in weather compared to the milder months preceding it. With lower temperatures, often dipping into the negatives, and an average that hovers around freezing, this month ushers in the essence of winter. The increased humidity and significant precipitation, typically manifesting as snow, contribute to a serene, frosty landscape characterized by shorter daylight hours. This transition not only marks a stark contrast to the warmer seasons but also invites a cozy, festive atmosphere. For a deeper understanding of the climate nuances and patterns, you can explore more details here: Climate.