Last updated: August 27, 2025
In Bolu, Turkey, December brings a mix of chilly temperatures and notable precipitation. The average temperature hovers around 3°C (39°F), with maximums reaching up to 16°C (62°F) and minimums plunging to a brisk -13°C (9°F). This month sees about 117 mm (4.6 in) of rain spread over approximately 16 days, resulting in a humidity level of 85% that adds a palpable chill to the air. Whether you're strolling through the winter wonderland or seeking cozy indoor retreats, Bolu's December weather is both inviting and crisp, setting the stage for a picturesque winter experience.
In December, Bolu, Turkey, begins to embrace the chill of winter, with temperatures ranging from a brisk -13°C (9°F) at night to a mild 16°C (62°F) during the day. The average temperature hovers around 3°C (39°F), providing a sharp contrast to the warmer autumn months. This gradual drop in temperatures, starting from the average highs of 21°C (69°F) in November, signals the arrival of winter, making December a month of transformation. Snowfall becomes a possibility, creating a picturesque winter landscape. Visitors can expect a charming, crisp atmosphere that encourages warm clothing and cozy indoor activities, while the breathtaking natural scenery invites outdoor exploration.
December in Bolu, Turkey, marks a notable shift in the precipitation pattern as the year draws to a close. With an average of 117 mm (4.6 in) of rainfall spread over 16 days, it emerges as one of the wetter months, comparable to March's precipitation. This surge aligns with the broader trend of increased rainfall in late autumn and early winter, signaling a transition from the drier summer months. The contrast is stark; July and August, which see only 71 mm (2.8 in) and 43 mm (1.7 in) respectively, highlight how quickly the region shifts from dry spells to a more saturated climate. As December blankets Bolu in its winter chill, the frequent rainfall not only nourishes the lush landscapes but also sets the stage for the vibrant natural tapestry that the region is known for.
In Bolu, Turkey, December brings a notable rise in humidity, reaching 85%, which mirrors the trend of increased moisture seen in the preceding months. Following a gradual decline during the summer, where the humidity dipped to a comfortable 53% in August, a steady climb returns as autumn progresses. November's 83% sets the stage for December's even higher levels, reinforcing the idea that winter in Bolu is characterized by a more humid atmosphere. This consistent pattern emphasizes the region's transition from warmer seasons to the cooler, damp conditions of winter, making December a month where the air feels distinctly rich with moisture.
In December, Bolu, Turkey experiences a noticeable drop in its UV Index, settling at a low level of 2, which signifies minimal exposure risk. This reduction in UV radiation is a significant shift from the previous months, highlighting a transition from the intense summer sun to the cooler winter period. As a result, residents and visitors can enjoy an extended burn time of 45 minutes before needing protection, making this month ideal for outdoor activities without the immediate concern of sunburn. This trend of decreasing UV levels throughout late autumn and early winter underscores the region’s seasonal changes, providing a reminder of the importance of adapting sun safety measures as conditions shift. For more details, check out the Bolu UV Index.
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In Bolu, Turkey, December brings 217 hours of sunshine, setting the stage for a transitional winter month. As the year progresses from January's modest 175 hours, there's a noticeable climb in daylight as spring approaches, culminating in 371 hours during the sun-drenched days of May. The summer months peak with 415 hours of glorious sunshine in July, showcasing Bolu’s vibrant atmosphere. However, by December, the sunlight has begun to wane again, signaling the arrival of winter and inviting a cozy ambiance throughout the region. This ebb and flow not only highlights Bolu’s distinct seasonal rhythms but also underscores the charm of experiencing each unique moment, from sunlit gardens to wintery landscapes.
In Bolu, Turkey, the likelihood of sunny weather in December hovers around 34%, which marks a slight dip compared to the preceding months. As the calendar year winds down, the chance of basking in the sun decreases from a peak of 64% in August. The trend reflects a distinct seasonal shift, where late autumn leads into winter, bringing more cloud cover and cooler temperatures. Despite the decrease, December still offers some opportunities for sun, especially when compared to the gloomier depth of winter that follows. In essence, while Bolu may not be bathed in sunlight this month, there are still moments of brightness amid the cool, crisp air.
In Bolu, Turkey, December marks a return to shorter days, mirroring the daylight duration seen in January and November, with just 9 hours of daylight. As the year progresses, daylight hours steadily increase from the deep winter months, peaking at an impressive 15 hours in June during the summer solstice. The gradual transition is evident as days lengthen from 10 hours in February to 14 hours in May, before tapering off again in the fall. This cyclical pattern not only highlights the changing seasons but also reflects the natural rhythm of life in Bolu, inviting both residents and visitors to embrace the cozy charm of winter and the vibrant energy of summer.
As December settles in Bolu, Turkey, the landscape greets the winter with a notable shift in wind dynamics. With an average wind speed of 2.3 m/s (5 mph), December stands out as a month experiencing a slight uptick from the quieter summer months, showcasing evidence of the seasonal transition as it approaches the new year. This is a contrast to the progressively calmer winds observed from the late spring to early autumn, where speeds dipped as low as 1.6 m/s (4 mph) in October. The return of brisk winds in December not only invigorates the atmosphere but also hints at the cold fronts typical of winter, making it a time for cozy gatherings as the year wraps up.
Weather in Bolu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bolu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Bolu range from a minimum of -13°C (9°F) to a maximum of 16°C (62°F), with an average of 3°C (39°F). The month sees significant precipitation, totaling 117 mm (4.6 in) over 16 days, contributing to a high humidity level of 85%.
In contrast, January experiences colder temperatures, with minimums dropping to -19°C (-2°F) and an average of 0°C (32°F), while the maximum reaches 17°C (63°F). Precipitation decreases slightly to 91 mm (3.6 in) over 13 days, and humidity remains fairly consistent at 84%. For more details on January weather, visit Bolu weather in January.
December and February both exhibit cold temperatures with an average maximum of 16°C (62°F). However, December typically experiences milder min temperatures averaging around -13°C (9°F), compared to February's colder average minimum of -16°C (3°F). Precipitation levels are higher in December, with 117 mm (4.6 in) falling over 16 days, while February sees less rain at 81 mm (3.2 in) across 13 days. Humidity remains consistent at 85% in both months, contributing to the damp and chilly atmosphere. For specific details about February weather, you can check Bolu weather in February.
December and March share similar average precipitation levels, with December slightly higher at 117 mm compared to March's 116 mm. However, temperatures in December are generally milder, with a minimum of -13°C and a maximum of 16°C, while March shows a cooler range with a minimum of -19°C and a maximum of 21°C. Additionally, both months experience relatively high humidity, with December at 85% and March slightly lower at 84%. For a more detailed view of March weather patterns, you can check this link: Bolu weather in March.
In December, temperatures typically dip to a minimum of -13°C (9°F), with an average of around 3°C (39°F) and a high of 16°C (62°F). The month experiences significant precipitation, totaling 117 mm (4.6 in) over 16 days, coupled with high humidity levels at 85%.
In contrast, April brings milder conditions, with minimum temperatures around -3°C (26°F), an average of 9°C (48°F), and a maximum of 23°C (73°F). The precipitation is less intense at 91 mm (3.6 in) over 14 days, and humidity decreases to 78%. This transition from the cold, damp winter of December to the more temperate and gradually warming climate of April is a welcome change for many. For more details about the weather during this time, you can visit Bolu weather in April.
In December, temperatures can plunge as low as -13°C (9°F), with an average of around 3°C (39°F) and a maximum reaching 16°C (62°F). The month is characterized by high humidity at 85% and considerable precipitation, totaling 117 mm (4.6 in) over approximately 16 days. In contrast, May brings a noticeable warmth, with minimum temperatures only dropping to -1°C (30°F), and averages around 13°C (57°F), while highs can soar to 30°C (86°F). The precipitation in May slightly increases to 131 mm (5.2 in) across 17 days, but humidity decreases to 78%. For a detailed view of May's climate, you can check out Bolu weather in May.
December and June present starkly contrasting weather conditions. In December, temperatures can plummet to a minimum of -13°C (9°F), with an average of 3°C (39°F) and a maximum of 16°C (62°F). The month experiences significant precipitation, totaling 117 mm (4.6 in) over approximately 16 days, combined with high humidity levels reaching 85%. On the other hand, June brings a much milder climate, with temperatures ranging from a minimum of 4°C (39°F) to a pleasant maximum of 27°C (82°F), averaging around 17°C (62°F). Although June has a slightly higher precipitation level of 129 mm (5.1 in) spread over 19 days, the humidity is lower at 71%. This comparison highlights the winter chill of December versus the warm, humid conditions of June. For more details, you can check Bolu weather in June.
In December, temperatures can dip as low as -13°C (9°F), while averaging around 3°C (39°F) and peaking at 16°C (62°F). The month is characterized by high humidity at 85%, accompanied by 117 mm (4.6 in) of precipitation spread over 16 days. In contrast, July enjoys milder weather with minimum temperatures of 7°C (45°F), an average of 19°C (67°F), and maximums reaching 31°C (88°F). With only 71 mm (2.8 in) of precipitation over 11 days and a lower humidity of 62%, July offers a much drier and more comfortable atmosphere. For more details, check out the Bolu weather in July.
When comparing the weather in December and August, notable differences emerge. December experiences significantly colder temperatures, with a range from a low of -13°C (9°F) to a mild high of 16°C (62°F), while August boasts much warmer conditions, with temperatures ranging from a low of 9°C (48°F) to a high of 33°C (92°F). Additionally, December is characterized by considerable precipitation, averaging 117 mm (4.6 in) over 16 days, compared to August's lighter rainfall, which totals only 43 mm (1.7 in) over 7 days. Humidity levels also differ, with December maintaining a high humidity of 85%, while August has a more comfortable 53%. For more detailed information, check out Bolu weather in August.
December and September feature strikingly different weather patterns. In December, temperatures range from a chilly -13°C (9°F) to a mild 16°C (62°F), averaging around 3°C (39°F), with high humidity at 85% and significant precipitation of 117 mm (4.6 in) over 16 days. In contrast, September enjoys much warmer conditions, with temperatures varying from a minimum of 1°C (34°F) to a peak of 34°C (93°F), averaging 16°C (62°F). The month sees considerably less precipitation, totaling 51 mm (2.0 in) over just 8 days, and lower humidity at 61%. For more details, check out Bolu weather in September.
The weather in December is significantly colder than in October, with average temperatures ranging from a minimum of -13°C (9°F) to a maximum of 16°C (62°F), compared to October's more moderate range of -2°C (29°F) to 29°C (85°F). December also sees a higher level of precipitation, with 117 mm (4.6 in) over 16 wet days, whereas October experiences 78 mm (3.1 in) over just 9 days. Additionally, December's humidity is higher at 85% compared to October's 76%, contributing to a much chillier atmosphere overall. For more detailed information about October's weather, you can check Bolu weather in October.
When comparing the weather in December to that of November, several notable differences emerge. December experiences a lower minimum temperature, dropping to -13°C (9°F), compared to November’s milder -6°C (21°F). The average temperature also sees a decline, with December averaging 3°C (39°F) versus November's 7°C (44°F). Additionally, December has significantly more precipitation, with 117 mm (4.6 in) over 16 days, compared to November’s 59 mm (2.3 in) across 8 days. Despite the slight increase in humidity from November (83%) to December (85%), the colder temperatures and wetter conditions of December create a distinctly different winter atmosphere. For more detailed information about November weather, check out Bolu weather in November.
In December, Bolu experiences a notable shift in weather compared to other months, plunging into the heart of winter with lower temperatures that can dip significantly below freezing. The typical average temperature hovers around a chilly 3°C (39°F), presenting a brisk atmosphere that contrasts sharply with the milder fall months. Precipitation is frequent, with about half the month seeing rain or snow, accumulating to 117 mm (4.6 in) over 16 days, adding a damp chill to the air. The humidity remains high at 85%, contributing to a cold and frosty ambiance that can be less inviting than the more temperate spells earlier in the year. For those interested in a deeper understanding of this transformative time, explore more at Bolu Climate.