December Weather in , Slovenia

Last updated: August 27, 2025

December in Slovenia presents a charming winter landscape, characterized by a temperature range that peaks at a maximum of 17°C (63°F) and dips to a minimum of -6°C (21°F), showcasing the seasonal chill. With an average temperature of 2°C (37°F), residents and visitors alike experience the crispness of winter air. December also experiences 61 mm (2.4 in) of precipitation over 9 days, contributing to the region's enchanting atmosphere. Coupled with a humidity level of 89%, this month captures the essence of winter, making Slovenia a picturesque destination for those seeking seasonal beauty and tranquility.

December Temperature in

As December settles in Slovenia, a noticeable chill marks the transition from autumn to winter. Temperatures dip into the minuses, with lows around -6°C (21°F), while the average hovers at a brisk 2°C (37°F). The daily highs, however, can reach a moderate 17°C (63°F), providing a slight respite from the cold. This month showcases a blend of frosty nights and relatively mild afternoons, making it a fascinating time to experience the serene beauty of Slovenia's winter landscape. As the year closes, the country's varied climates offer a unique experience, inviting visitors to embrace its wintry charm.

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

The chart illustrates December temperature patterns in , showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In , 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).
JanFebMarAprMayJunJulAugSepOctNovDec333944536070727262544436
Data source: Temperature data for 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

December in Slovenia experiences a notable shift in precipitation patterns as winter sets in, with an average of 61 mm (2.4 in) of rainfall spread over 9 days. This is a decrease compared to the wet month of May, which sees a peak at 117 mm (4.6 in), yet December's totals indicate a consistent moisture presence as the year closes. While precipitation begins to taper off from the autumn months of October and November, the steady rainfall in December underscores the region’s transitional climate. With frequent showers that help maintain the lush landscapes, this month serves as a reminder of the cozy, wet conditions that define Slovenian winters.

December Precipitation Trends in

The chart displays monthly precipitation patterns in , 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 , December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec29443749117908690103567261
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in

In December, Slovenia experiences a notable rise in humidity, maintaining a high level of 89%—a figure consistent with November's readings. This trend of elevated humidity during the winter months is characteristic of the region, as seen with January's substantial 90%. As temperatures drop and the landscape embraces the chill of winter, moisture in the air tends to linger. As the year progresses to spring, humidity gradually decreases, reaching its lowest point at 60% in August. However, the end of the year reveals a return to those damp conditions, setting the stage for a cozy, sometimes foggy atmosphere that typifies Slovenia's winter charm.

December Average Humidity in

This chart illustrates the average monthly humidity levels in , 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 is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%84%78%73%71%73%70%60%65%84%89%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in

As the year winds down in Slovenia, December presents the lowest UV Index at 1, categorizing sunlight exposure as low with a burn time of 45 minutes. Following the high peaks of summer, where UV levels soared to 9 in July and June, the trend clearly shows a gradual decline in intensity as autumn sets in. November's UV Index drops to 2, and even earlier months maintain a much higher exposure risk, especially from May through August when levels reached very high at 8 and 9. This seasonal shift underscores the importance of adapting sun safety practices, making December a time for less concern about UV exposure, but reminding residents to stay informed year-round through resources like the UV Index.

Maximum UV Index Levels in for December

The chart shows the monthly maximum UV Index (UVI) for 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 typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: 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

As December unfolds in Slovenia, the sun graces the landscape with 197 hours of daylight, a noticeable dip compared to the vibrant summer months that saw over 400 hours in July. This decrease marks a natural transition into winter, yet December still offers a unique charm as the holiday season approaches. The trends throughout the year showcase a gradual increase in sunlight from January's 163 hours to the summer peak, illustrating Slovenia's shift from the frost of winter to the warmth of summer. Interestingly, December's sunlight, while lesser, still holds an enchanting quality, illuminating the festive decorations that adorn towns and creating a cozy atmosphere perfect for gathering with loved ones.

Monthly Sunshine Duration in : December Highlighted

The December sunshine duration represents the total number of hours 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.
JanFebMarAprMayJunJulAugSepOctNovDec163h225h302h337h367h405h424h389h323h286h209h197h
Data source: December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in During December

In Slovenia, December marks a noticeable dip in sunshine, with only a 30% chance of sunny weather. This trend continues from the gloomy November, which shares a similar likelihood of 28% for clear skies. As we look back over the months, it's evident that the probability of sunshine varies widely throughout the year; for instance, March boasts a robust 55% chance, while the summer months like June and July average around 54% and 47% respectively. Unfortunately, as winter takes hold, sunny days become increasingly scarce, making December a less favorable time for those seeking sunshine in this picturesque country.

Percentage of Sunny Days in December in

The chart illustrates the percentage of sunny days in 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 experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%48%55%39%38%54%47%44%51%43%28%30%
Data source: December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in in December

As the year winds down, December in Slovenia greets residents with a modest 8 hours of daylight, the shortest duration since the summer months. This decline from 9 hours in November signals the deepening embrace of winter, following a gradual decrease from the 15 hours enjoyed in the lush days of late spring and early summer. Observing the trends, daylight begins its steady ascent in January, climbing to 10 hours in February before springing forward in March, where it reaches 11 hours. The contrast is stark after the vibrant summer months, illustrating a clear cycle: longer days that nurture growth give way to the quieter, dimmer reflections of winter. As hours of sunlight wane, the cozy ambiance of the approaching holiday season blankets Slovenia, inviting moments of warmth and togetherness beneath the soft glow of those fleeting daylight hours.

Average Daylight Hours in for December

The chart illustrates the variation in daylight duration in throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h10h 18m11h 56m13h 36m15h 2m15h 46m15h 23m14h 6m12h 30m10h 50m9h 22m8h 36m
Data source: daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in

As December rolls in, Slovenia experiences a gentle breeze with an average wind speed of 2.1 m/s (5 mph), slightly higher than the calmer months of August and September at 1.9 m/s. Despite the chill of winter, this month’s winds indicate a return from November’s subdued gusts of 2.0 m/s. The trend shows a gradual increase in wind speeds from the serene summer months, peaking in April at 3.0 m/s. While December’s winds may not reach those heights, they carry a refreshing touch, serving as a subtle reminder of the dynamic climate that characterizes Slovenia’s winter landscape.

Average December Wind Speed in

The chart displays monthly wind speed patterns in , 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.52.63.02.92.32.51.91.92.62.02.1 m/s
Data source: December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Compares to Other Months

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 exhibit notable differences in weather patterns. December experiences a slightly milder average temperature of 2°C (37°F), with maximum temperatures reaching up to 17°C (63°F), while January shows a cooler average of 1°C (33°F) and a lower maximum of 15°C (59°F). Precipitation levels in December are higher at 61 mm (2.4 in) over 9 days, compared to January's 29 mm (1.1 in) spread over just 6 days. Humidity remains quite high in both months, with December at 89% and January slightly higher at 90%. For more details, you can check weather in January.

December and February present distinct winter weather patterns. In December, temperatures range from a minimum of -6°C (21°F) to a maximum of 17°C (63°F), with an average of 2°C (37°F). The month sees about 61 mm (2.4 in) of precipitation over 9 days, and a high humidity level of 89%. In contrast, February experiences slightly colder conditions with a minimum of -12°C (10°F) and a maximum of 20°C (68°F), yielding an average temperature of 4°C (39°F). Precipitation in February is lower, at 44 mm (1.7 in) over just 8 days, and humidity decreases to 84%. For more detailed insights, check out weather in February.

In December, temperatures typically range from a chilly -6°C (21°F) at night to a mild 17°C (63°F) during the day, with an average of 2°C (37°F). The month sees about 61 mm (2.4 in) of precipitation over 9 days and experiences higher humidity levels at 89%. In contrast, March brings slightly warmer temperatures, with nighttime lows dropping to -18°C (0°F) and daytime highs reaching up to 23°C (73°F), averaging at 7°C (44°F). March also sees less precipitation, tallying 37 mm (1.4 in) over 8 days, accompanied by lower humidity at 78%. For more detailed information, you can check the weather in March.

In December, the weather is notably colder, with average temperatures hovering around 2°C (37°F) and nighttime lows dropping to -6°C (21°F). The month sees about 61 mm (2.4 in) of precipitation over approximately 9 days and a high humidity level of 89%, contributing to a brisk and damp atmosphere. In contrast, April experiences a milder climate, with average temperatures rising to 11°C (53°F) and highs reaching up to 28°C (82°F). Although April has slightly less precipitation at 49 mm (1.9 in) over 10 days, the humidity decreases to 73%, making for a more comfortable and pleasant outdoor experience. For more detailed insights on the weather conditions in April, you can visit weather in April.

December and May exhibit stark contrasts in weather conditions. In December, temperatures typically range from a chilly min of -6°C (21°F) to a milder max of 17°C (63°F), with an average of 2°C (37°F). The month sees about 61 mm (2.4 in) of precipitation over 9 days, accompanied by high humidity levels of 89%. In contrast, May brings a significant rise in temperatures, with a minimum of 1°C (35°F) and a maximum reaching 31°C (88°F), averaging 16°C (60°F). Precipitation increases to 117 mm (4.6 in) spread over 17 days, but the humidity decreases to 71%. For a detailed look at weather trends in May, visit weather in May.

In December, temperatures in Murska Sobota can be quite chilly, with lows reaching -6°C (21°F) and an average of just 2°C (37°F), making it a time for warm clothing and cozy indoor activities. The month sees around 61 mm (2.4 in) of precipitation over approximately 9 days, coupled with high humidity at 89%, creating a damp atmosphere. In contrast, June offers a significant warm-up; minimum temperatures rise to 8°C (47°F), with averages of 21°C (70°F) and maximums soaring to 35°C (95°F). Rainfall also increases slightly to 90 mm (3.5 in) over 12 days, but the overall humidity drops to a more comfortable 73%. For more details on June's weather conditions, check out weather in June.

In December, the weather is much chillier, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 17°C (63°F), and an average of only 2°C (37°F). The month is characterized by high humidity at 89% and about 61 mm (2.4 in) of precipitation spread over 9 days. In contrast, July brings warm summer conditions, featuring temperatures that range from a minimum of 10°C (51°F) to a scorching maximum of 35°C (96°F), with an average of 22°C (72°F). July experiences slightly more precipitation, at 86 mm (3.4 in) over 13 days, but with a much more comfortable humidity level of 70%. For a detailed insight into July's climate, please visit weather in July.

December and August present stark contrasts in weather conditions. In December, temperatures range from a chilly minimum of -6°C (21°F) to a maximum of 17°C (63°F), with an average of just 2°C (37°F). The month sees about 61 mm (2.4 in) of precipitation over 9 days, accompanied by high humidity levels at 89%. In comparison, August boasts much warmer temperatures, with a minimum of 9°C (48°F) and a maximum reaching up to an impressive 37°C (100°F), which averages around 22°C (72°F). Precipitation in August is slightly higher at 90 mm (3.5 in) over 11 days, but the humidity is considerably lower at 60%. For more details on the weather in August, check this link: weather in August.

December and September present dramatically different weather patterns. In December, temperatures can plummet to a minimum of -6°C (21°F), with an average of just 2°C (37°F) and a maximum reaching 17°C (63°F). This month sees an overall high humidity level of 89% and experiences around 61 mm (2.4 in) of precipitation over approximately 9 days. Conversely, September offers much milder conditions, with temperatures ranging from a minimum of 2°C (37°F) to a pleasant average of 17°C (63°F) and highs that can soar to 32°C (90°F). It is also wetter in September, with 103 mm (4.1 in) of precipitation spread over 10 days, accompanied by a comparatively lower humidity of 65%. For more details on September weather, visit weather in September.

In December, the weather turns significantly colder compared to October, with temperatures ranging from a minimum of -6°C (21°F) to an average of 2°C (37°F) and a maximum of 17°C (63°F). In contrast, October boasts milder conditions, with temperatures from a minimum of 0°C (32°F) to an average of 12°C (54°F) and highs reaching up to 26°C (79°F). Both months experience a similar amount of precipitation, with December receiving 61 mm (2.4 in) over 9 days, slightly more than October's 56 mm (2.2 in) over 8 days. Additionally, December's humidity is higher at 89%, compared to October's 84%, contributing to a chillier atmosphere as winter approaches. For more detailed information on the weather, check out weather in October.

In comparing the weather between November and December, we see notable differences in temperature and precipitation. In December, the minimum temperature remains the same as in November at -6°C (21°F), but the average temperature drops to 2°C (37°F) compared to November's warmer average of 7°C (44°F). Additionally, while both months experience precipitation on 9 days, December receives slightly less rainfall at 61 mm (2.4 in) compared to November's 72 mm (2.8 in). Despite these shifts, humidity levels in both months remain consistent at 89%. For more details, you can check the weather in November.

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Conclusion: What to Expect From December Weather in

As December settles in, the weather presents a stark contrast to the milder months, ushering in a cooler, more contemplative atmosphere. With temperatures averaging around 2°C (37°F) and dropping to chilly lows of -6°C (21°F), the month invites cozy gatherings and warm attire. This is the time when the landscape is often kissed by a modest 61 mm (2.4 in) of precipitation over about 9 days, contributing to the season's characteristic humidity of 89%. The shift from autumn’s indulgent warmth to winter’s crisp embrace marks December as a month of transformation. For those interested in gaining a better understanding of the climatic patterns in this region, explore more at Climate.