December Weather in Razlog, Bulgaria

Last updated: August 21, 2025

In Razlog, Bulgaria, December unveils a chilly atmosphere, with temperatures ranging from a maximum of 11°C (52°F) to a brisk minimum of –21°C (–6°F). The month sees an average temperature of around –1°C (30°F), highlighting the winter's chill. With 102 mm (4.0 in) of precipitation spread across 13 days, residents and visitors alike can expect overcast skies interspersed with light snow and rain. The high humidity level of 87% further contributes to the frosty feel, enveloping the town in a serene, wintry ambience that's perfect for holiday festivities.

December Temperature in Razlog

In Razlog, Bulgaria, December ushers in the heart of winter, with temperatures dipping significantly as the year comes to a close. The minimum temperatures can plunge to a brisk -21°C (-6°F), while daily averages hover around -1°C (30°F), providing a sharp contrast to the milder weather of earlier months. The maximum temperatures reach a chilly 11°C (52°F), illustrating that although the days are cold, they can still offer a glimpse of warmth under the right conditions. This month marks a notable transition where the landscape transforms into a winter wonderland, setting the stage for holiday festivities and winter sports. As the first snows blanket the region, December truly encapsulates the essence of the season in Razlog, inviting both locals and visitors to embrace its frosty charm.

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

The chart illustrates December temperature patterns in Razlog, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Razlog, 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).
JanFebMarAprMayJunJulAugSepOctNovDec243034425157626255463930
Data source: Temperature data for Razlog 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 Razlog

In December, Razlog experiences a notable increase in precipitation, with 102 mm (4.0 in) falling over approximately 13 days. This marks a significant uptick compared to the preceding months, particularly November's 62 mm across only 8 days. December's rainfall is pivotal in preparing the region for the winter season, embodying a transition from the autumn dryness of earlier months. The precipitation peaks in summer with a striking 162 mm in June, but winter sets in with its own distinct patterns, suggesting a shift in weather dynamics as the year draws to a close. This consistent moisture in December not only contributes to the area's vibrant landscape but also supports the local ecosystem through the colder months ahead.

December Precipitation Trends in Razlog

The chart displays monthly precipitation patterns in Razlog, 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 Razlog, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec7666111911151628959486762102
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Razlog

In Razlog, Bulgaria, December brings a notable increase in humidity, soaring to 87%, a slight rise from November’s 85%. As the year transitions into winter, this uptick in moisture is characteristic of the colder months. Humidity levels in Razlog exhibit a downward trend from the peak summer months, where August records a low of 47%. However, the winter months generally experience a resurgence, as seen with December's figures, reflecting a clear seasonal pattern. Overall, the data illustrates a moderate but steady fluctuation in humidity across the year, emphasizing Razlog's distinct seasonal climate.

December Average Humidity in Razlog

This chart illustrates the average monthly humidity levels in Razlog, 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 Razlog is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%83%81%71%74%63%60%47%57%76%85%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Razlog

As the year progresses in Razlog, Bulgaria, the UV Index reflects a notable trend in sun exposure. December keeps the UV Index at a moderate level of 3, similar to the beginning of the year in January. This means that residents and visitors alike can enjoy outdoor activities with a comfortable burn time of 30 minutes before needing sun protection. However, as we move through the months, there’s a clear escalation in UV levels, peaking during the summer months of June through August, where the index reaches an extreme 11. It's crucial to stay vigilant during this period with reduced burn times, while the colder months allow for a more carefree approach to sun exposure. For those interested in tracking changes, you can find more information on the Razlog UV Index.

Maximum UV Index Levels in Razlog for December

The chart shows the monthly maximum UV Index (UVI) for Razlog 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 Razlog typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3588101110108643
Data source: Razlog 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 Razlog

In Razlog, Bulgaria, December brings a gentle decline in sunshine hours, with 214 hours illuminating the month as winter settles in. This is part of a broader trend that sees daylight hours starting to recede after the summer peak of 422 hours in July. Following this summer apex, the hours gradually taper off, creating a rhythm of light that complements the changing seasons. From the promising 393 hours in June and May to the more modest totals seen in November and January, December's sunlight serves as a soft reminder of the cozy ambiance of winter. As the landscape transforms under a blanket of snow, the glimmers of daylight become precious, encouraging a reflective pause amid the festive spirit.

Monthly Sunshine Duration in Razlog: December Highlighted

The December sunshine duration represents the total number of hours Razlog 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.
JanFebMarAprMayJunJulAugSepOctNovDec179h235h288h335h393h393h422h399h342h290h230h214h
Data source: Razlog December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Razlog During December

In Razlog, Bulgaria, the likelihood of sunny weather in December hovers at 31%, reflecting a trend of diminishing sunshine as winter takes hold. While the year kicks off with a modest 26% chance of sun in January, the percentage gradually climbs through the early spring months, peaking at a notable 74% in the heart of summer. However, as autumn fades into winter, December’s sun chances dip slightly, mirroring November's 32%. This pattern emphasizes the seasonal transition, where the vibrancy of summer's rays gives way to the more subdued sunlight typical of winter months, making December a month where clear skies are a delightful rarity rather than the norm.

Percentage of Sunny Days in December in Razlog

The chart illustrates the percentage of sunny days in Razlog 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 Razlog experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec26%51%47%44%45%45%72%74%52%47%32%31%
Data source: Razlog December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Razlog in December

As the year draws to a close in Razlog, Bulgaria, December ushers in a return to the shorter daylight hours, offering just 9 hours of light each day, mirroring January's brevity. This seasonal shift is part of a broader trend, where daylight gradually increases from 9 hours in January to a peak of 15 hours in June, creating a vibrant spring and summer that bask in extended sunlight. From July onward, the days begin to shorten again, showcasing nature's rhythmic cycle. As December settles in, the diminishing light reminds us of winter's embrace, even as the promise of longer days looms just around the corner with the onset of the new year. This ebb and flow of daylight not only marks the changing seasons but also invites a deeper appreciation for each fleeting moment of sunshine as we cozy up during the winter months.

Average Daylight Hours in Razlog for December

The chart illustrates the variation in daylight duration in Razlog throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 30m10h 35m11h 57m13h 21m14h 33m15h 9m14h 50m13h 47m12h 26m11h 2m9h 48m9h 10m
Data source: Razlog daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Razlog

As December sweeps into Razlog, Bulgaria, it brings with it a delightful shift in wind patterns. The average wind speed rises to 2.0 m/s (5 mph), mirroring the briskness often associated with winter's embrace. This marks a notable increase compared to the calmer months of late summer and early autumn, where speeds hovered around 1.6 to 1.7 m/s (4 mph). The transition into December's winds signals a change in atmosphere, inviting residents and visitors alike to enjoy the crisp, invigorating air. It’s a time when the gentle breeze feels both refreshing and invigorating, perfectly complementing the enchanting winter landscape.

Average December Wind Speed in Razlog

The chart displays monthly wind speed patterns in Razlog, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.01.91.91.71.81.61.61.71.71.61.72.0 m/s
Data source: Razlog December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Razlog Compares to Other Months

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

In December, temperatures typically range from a minimum of -21°C (-6°F) to a maximum of 11°C (52°F), with an average temperature of -1°C (30°F). This month experiences considerable precipitation, totaling 102 mm (4.0 in) over 13 days, and humidity levels remain high at 87%.

In comparison, January sees slightly colder temperatures with a minimum of -23°C (-9°F) and a maximum of 9°C (48°F), while the average temperature drops to -4°C (25°F). Precipitation decreases to 76 mm (3.0 in) over 10 days, and humidity climbs marginally to 88%. Overall, while both months are characterized by low temperatures and high humidity, January is cooler and slightly drier than December. For more details on January weather, visit Razlog weather in January.

In December, the weather features a significant humidity level of 87% and experiences temperatures ranging from a minimum of -21°C (-6°F) to a maximum of 11°C (52°F), with an average temperature of -1°C (30°F). This month also sees substantial precipitation, totaling 102 mm (4.0 in) over approximately 13 days. In contrast, February shares a similar temperature range, with a minimum of -21°C (-5°F) and a maximum of 13°C (55°F), but it enjoys slightly lower humidity at 83%. Additionally, February records less rainfall, accumulating 65 mm (2.6 in) across 10 days. For more detailed insights into the weather patterns, you can visit Razlog weather in February.

When comparing December and March weather, notable differences and similarities emerge. December experiences colder temperatures with an average of -1°C (30°F) and a maximum of only 11°C (52°F), whereas March sees a slight warming trend with an average of 1°C (34°F) and a maximum reaching up to 16°C (62°F). Precipitation levels are relatively close, with December receiving 102 mm (4.0 in) and March a bit more at 111 mm (4.4 in), both occurring over 13 days. Humidity is higher in December at 87%, compared to March's 81%. For a more detailed look at March conditions, you can explore Razlog weather in March.

December and April present contrasting weather experiences. In December, temperatures can drop as low as -21°C (-6°F), with an average of -1°C (30°F) and a maximum of 11°C (52°F). This month tends to be quite humid, with an average humidity of 87% and about 102 mm (4.0 in) of precipitation over 13 days. In contrast, April brings milder temperatures, with lows around -10°C (14°F) and highs reaching 20°C (69°F), resulting in an average of 6°C (42°F). The precipitation slightly decreases to 91 mm (3.6 in), with the same 13 days of rain, but humidity drops to a more comfortable 71%. For more specifics on April weather, you can check Razlog weather in April.

In December, the weather is significantly colder, with average temperatures hovering around -1°C (30°F) and nighttime lows plunging to -21°C (-6°F). The month also sees substantial precipitation of 102 mm (4.0 in) over 13 days, combined with high humidity levels of 87%. In contrast, May welcomes warmer temperatures, with averages reaching 11°C (51°F) and daytime highs peaking at 24°C (76°F). While May experiences slightly higher precipitation at 115 mm (4.5 in) over 19 days, the humidity is notably lower at 74%. For more details, you can check Razlog weather in May.

December and June exhibit strikingly different weather patterns. In December, temperatures can plummet to a chilling minimum of -21°C (-6°F), with an average of -1°C (30°F) and a maximum of 11°C (52°F). The month sees considerable precipitation at 102 mm (4.0 in) over 13 days, coupled with high humidity levels of 87%, creating a cold and damp atmosphere. In contrast, June brings a much milder climate, where temperatures range from a minimum of 1°C (34°F) to an average of 14°C (57°F) and peak at 28°C (83°F). Rainfall increases to 162 mm (6.4 in), spread across 20 days, but the humidity drops significantly to 63%, resulting in a more comfortable and pleasant environment. For more insights, you can visit Razlog weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures can plummet to a minimum of -21°C (-6°F), with an average temperature around -1°C (30°F) and a maximum of 11°C (52°F). This month is characterized by high humidity at 87% and considerable precipitation, receiving about 102 mm (4.0 in) over 13 days. In contrast, July offers a much milder climate, with minimum temperatures around 6°C (43°F) and average temperatures reaching 16°C (62°F), peaking at a maximum of 30°C (86°F). The summer month experiences lower humidity at 60% and slightly less precipitation, totaling 89 mm (3.5 in) over 14 days. For those interested in a detailed overview of July weather, you can find more information here: Razlog weather in July.

December and August present stark contrasts in weather. December typically experiences frigid temperatures, with a minimum of -21°C (-6°F) and an average of -1°C (30°F), topped off with a maximum of 11°C (52°F). This winter month also sees significant precipitation, totaling 102 mm (4.0 in) over 13 days, coupled with high humidity at 87%. In contrast, August brings a much warmer climate, with temperatures ranging from a minimum of 5°C (42°F) to an average of 17°C (63°F) and a peak of 30°C (86°F). The summer month enjoys less precipitation, amounting to 59 mm (2.3 in) over just 8 days, and lower humidity at 47%. For more specific details, check Razlog weather in August.

In comparing the weather between December and September, it's evident that December is significantly colder, with average temperatures hovering around -1°C (30°F) and occasional lows dipping as low as -21°C (-6°F). In contrast, September enjoys milder temperatures, averaging 13°C (55°F), with highs reaching up to 27°C (81°F).

Additionally, December experiences higher precipitation, with 102 mm (4.0 in) over 13 days, compared to September's 48 mm (1.9 in) over just 8 days. Humidity levels also differ markedly, with December's humidity at 87%, making it feel quite damp, while September has a more comfortable humidity level of 57%. For a closer look at Razlog's climate in September, you can check Razlog weather in September.

In comparing the weather between December and October, December is notably colder, with average temperatures hovering around -1°C (30°F) and a minimum plummet to -21°C (-6°F). In contrast, October enjoys a milder climate, with temperatures ranging from a low of -4°C (25°F) to a comfortable average of 8°C (47°F) and occasional peaks of 23°C (74°F). Additionally, December experiences significantly higher precipitation, with 102 mm (4.0 in) over about 13 days, while October has less rain at 67 mm (2.6 in) across 8 days. The humidity is also higher in December at 87%, compared to October's 76%. For more detailed information, you can check the Razlog weather in October.

December weather presents a significant shift from November as temperatures drop considerably. In December, the minimum temperature can plummet to -21°C (-6°F), while the average temperature hovers around -1°C (30°F) with a maximum of 11°C (52°F). This contrasts sharply with November, where temperatures range from a minimum of -12°C (11°F) to a more comfortable average of 4°C (39°F) and a maximum reaching 19°C (67°F). Additionally, December sees increased precipitation, totaling 102 mm (4.0 in) over 13 days, compared to November's 62 mm (2.5 in) over just 8 days. The humidity remains relatively high in both months, with December at 87% and November at 85%. For more details on this month's weather, you can check Razlog weather in November.

Compare Razlog's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Razlog

In Razlog, December brings a notable shift in weather, characterized by colder temperatures and increased precipitation compared to other months. The chill of winter sets in, with average temperatures dipping significantly, creating a stark contrast to the milder conditions of fall. Humidity levels peak, contributing to an atmospheric chill, while the number of rainy days rises, making December a month of varied weather patterns. This transition not only affects daily life but also enhances the region's natural beauty, preparing it for the picturesque winter landscape. For more insights on what to expect throughout the year, visit Razlog Climate.