Last updated: February 26, 2025
In Bonn, Germany, January presents a chilly embrace, with average temperatures hovering around 3°C (38°F). Early in the month, you might experience maximums reaching up to 14°C (58°F), but the thermometer can dip to a frosty -8°C (18°F) on the coldest nights. The air is laden with moisture, as reflected in a high humidity level of 91%, providing a damp chill. Rainfall is frequent, with 72 mm (2.8 in) expected over 14 days, making it essential to don appropriate attire for wet conditions. Whether you’re strolling through historic sites or cozying up indoors, January in Bonn has a distinct winter charm that beckons exploration.
In Bonn, Germany, January presents a chilly embrace as winter reaches its peak. With temperatures averaging around 3°C (38°F), residents can expect a minimum drop to -8°C (18°F), making warm clothing essential. The month offers a glimpse of warmth too, with maximums climbing to 14°C (58°F), hinting at the shifting seasons ahead. As winter's grip tightens, January serves as a transitional phase, setting the stage for February's even colder lows, while also opening the door to the gradual rise in temperatures that characterize the upcoming spring months. Thus, Bonn's January weather encapsulates both the bitterness of winter and the promise of renewal.
January in Bonn, Germany, marks the beginning of the year with average precipitation measuring 72 mm (2.8 in) across 14 rainy days. This sets the tone for a typically wet winter, as January's rainfall mirrors that of March, hinting at a consistent weather pattern into early spring. Notably, the precipitation in January is significantly higher than the spring months that follow, such as April, which averages just 36 mm (1.4 in). As the year progresses, the trend showcases a peak in July with 93 mm (3.7 in) of rain, but January remains a crucial month for replenishing the region's moisture levels, laying the foundation for the blossoming seasons ahead.
In January, Bonn, Germany, experiences a notably high humidity level of 91%, setting the stage for a damp winter month. This trend of elevated moisture persists into February, where humidity slightly decreases to 90%, before gradually tapering off as spring approaches. By March, humidity levels drop to 87%, continuing a steady decline through the milder months of April (84%) and May (77%), leading to a more comfortable atmosphere. The summer months see a shift, with humidity reaching its lowest point in July (72%) and August (71%), offering a brief respite. However, as autumn arrives, humidity begins to creep back up, rising to 81% in September and peaking again in the colder months of October (88%), November (91%), and December (92%), illustrating a cyclical pattern of moisture that defines Bonn's climate throughout the year.
In January, the UV Index in Bonn, Germany, stands at 1, indicating a low exposure category with a burn time of 45 minutes. This trend of low UV levels continues into February, where the index rises slightly to 2, but remains in the same safe exposure category. As the seasons shift into spring, March and April see a noticeable increase in UV intensity, reaching a moderate level of 4 and 5 respectively, shortening the burn time to 30 minutes. The progression into summer introduces more intensity, peaking in June and July with a very high UV Index of 8, reducing burn time significantly to just 15 minutes. This pattern highlights the importance of sun protection as the year unfolds, particularly in the vibrant months ahead. For more details on the UV levels throughout the year, visit Bonn UV Index.
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In Bonn, Germany, January greets residents with a modest 111 hours of sunshine, setting the stage for a gradual increase in brightness as the year unfolds. As winter gives way to spring, February nearly doubles that amount, boasting 203 hours, and by the time March arrives, the sunshine soars to 266 hours. This upward trend continues into April and May, with a peak sunlight experience in June at 393 hours—the pinnacle of the Bonn sunshine calendar. Following the warmth of summer, the days start to shorten, yet there remains a notable 378 hours in August before a gentle decline begins in September. As autumn deepens, October offers 232 hours, ushering in cloudier months with November's 179 hours and December's 126 hours, closing the year with a soft, reflective light. This cyclical dance of sunlight not only mirrors the changing seasons but also highlights Bonn’s vibrant, yet tranquil, atmospheric narrative throughout the year.
In January, Bonn, Germany experiences a mere 10% chance of sunny weather, making it the darkest and dreariest month of the year. As the winter season progresses, the likelihood of sunshine begins to increase significantly in February, climbing to 32%, and continues to rise through the spring months, reaching a peak of 42% in March. This upward trend hints at the anticipation of brighter days ahead, as residents look forward to the more moderate weather in the coming months, particularly in April and May, when sunny days become more frequent and enjoyable. However, even as the year transitions into summer, the chance of sunshine remains fairly consistent, hovering around the 30% mark during the hotter months. Overall, the data paints a clear picture: January is undoubtedly the month to brace for clouds, but with every passing week, hope for sun starts to shine through.
In Bonn, Germany, January marks the beginning of the year with a modest 8 hours of daylight, setting a tranquil tone for the winter months. As February unfolds, daylight gradually extends to 10 hours, heralding the approach of spring. This upward trend continues into March, where the days stretch to 11 hours. April surprises residents with an invigorating 13 hours of daylight, while May bathes the landscape in an ample 15 hours of sunlight, invigorating both nature and spirits. The peak daylight occurs in June, offering a generous 16 hours, allowing for longer outdoor adventures. As summer wanes, daylight begins to recede, with July and August still enjoying 15 and 14 hours, respectively. Autumn brings shorter days, dropping to 12 hours in September and dwindling to 10 by October. By November, the daylight again settles at 8 hours, before December completes the cycle, echoing January with its brief days. This seasonal dance of light and shadow beautifully illustrates the rhythm of life in Bonn, where each month brings its own unique experience of daylight.
As the January winds sweep through Bonn, Germany, they typically blow at an average speed of 3.6 m/s (8 mph), setting the tone for the month. While January's gusts are slightly lower than February's peak of 3.7 m/s, they remain consistent compared to the ebb and flow of wind speeds in the preceding and following months. By March, we see a minor dip to 3.4 m/s, hinting at a gradual transition into spring. Interestingly, the summer months witness a noticeable reduction, with speeds dropping to a gentle 2.4 m/s in June, before gradually picking up again in the fall. Overall, the data reveals that January's vibrant winds, while moderate, pave the way for a shifting pattern that reflects Bonn's distinct seasonal rhythm.
The weather in Bonn changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Bonn and find detailed weather information for every month.
In January, temperatures typically range from a minimum of -8°C (18°F) to a maximum of 14°C (58°F), with an average of around 3°C (38°F). This month sees about 72 mm (2.8 in) of precipitation over 14 days, and the humidity remains quite high at 91%. In contrast, February experiences slightly cooler minimum temperatures at -10°C (14°F) but an increased maximum of 21°C (69°F) and an average of 5°C (41°F). Precipitation in February is slightly less at 68 mm (2.7 in) over 12 days, with humidity remaining similarly high at 90%. For more detailed insights, you can check the Bonn weather in February.
January and March present distinct differences in weather patterns. January typically features colder temperatures, with minimums dropping to -8°C (18°F) and maximums reaching only up to 14°C (58°F), while March sees a notable increase in warmth, with a minimum of -10°C (15°F) and a maximum soaring to 23°C (73°F). Despite both months experiencing similar precipitation levels of 72 mm (2.8 in), March tends to have slightly more rainfall days, totaling 15 compared to January’s 14. Additionally, humidity is elevated in both months, with January hovering around 91% and March slightly lower at 87%. For more specific insights into the weather trends, you can check out Bonn weather in March.
January and April present striking contrasts in weather. In January, temperatures can plummet as low as -8°C (18°F) with an average of 3°C (38°F) and a maximum of 14°C (58°F). This month experiences considerable precipitation, totaling 72 mm (2.8 in) over 14 days, and high humidity levels at 91%. In contrast, April brings milder temperatures with a minimum of -3°C (26°F), an average of 10°C (50°F), and highs reaching up to 27°C (81°F). With only 36 mm (1.4 in) of precipitation over 9 days and lower humidity at 84%, April feels more pleasant and welcoming compared to the chill of January. For more detailed insights into April's conditions, check out Bonn weather in April.
In January, temperatures in Bonn can plummet to a minimum of -8°C (18°F), with an average of 3°C (38°F) and a maximum of 14°C (58°F). The month experiences high humidity at 91% and receives about 72 mm (2.8 in) of precipitation over 14 days. In contrast, May sees a significant warm-up, with minimum temperatures around 0°C (33°F), an average of 14°C (57°F), and highs reaching up to 33°C (91°F). Humidity drops to 77%, while precipitation remains similar at 70 mm (2.8 in) across 13 days. For a more detailed look at the delightful May weather, visit Bonn weather in May.
In January, the weather is quite cold, with temperatures ranging from a minimum of -8°C (18°F) to a maximum of 14°C (58°F), and an average temperature of around 3°C (38°F). The month typically experiences high humidity at 91% and receives about 72 mm (2.8 in) of precipitation over 14 days. In contrast, June brings much warmer temperatures, with a minimum of 8°C (47°F), an average of 19°C (66°F), and a peak of 35°C (95°F). Although there is slightly less precipitation in June at 68 mm (2.7 in), it falls over fewer days (11 days) and the humidity drops to a more comfortable 74%. For more detailed information about June weather, you can check Bonn weather in June.
In January, the weather in Bonn can be quite chilly, with temperatures ranging from a minimum of -8°C (18°F) to a maximum of 14°C (58°F), and an average temperature of about 3°C (38°F). The month experiences significant humidity at 91% and receives around 72 mm (2.8 in) of precipitation over 14 days. In contrast, July brings much warmer conditions, with minimum temperatures around 8°C (47°F) and maximums soaring up to 40°C (105°F), averaging 20°C (67°F). While July sees slightly higher precipitation at 93 mm (3.7 in) over just 11 days, the humidity drops to 72%. For more detailed information, check out Bonn weather in July.
January and August present strikingly different weather conditions. In January, temperatures can drop to a chilling minimum of -8°C (18°F), with an average of 3°C (38°F) and a maximum reaching 14°C (58°F). The month sees considerable precipitation, totaling 72 mm (2.8 in) over about 14 days, paired with high humidity at 91%. In contrast, August boasts a much milder climate, with minimum temperatures starting at 7°C (44°F) and peaking at an impressive 36°C (98°F), averaging 20°C (67°F). This month also experiences slightly more rainfall at 80 mm (3.2 in) over 15 days, but humidity decreases to 71%. For a closer look at August's climate, check out Bonn weather in August.
In January, temperatures can be quite chilly, with a minimum of -8°C (18°F) and an average of 3°C (38°F), while the maximum climbs to only 14°C (58°F). The month sees substantial precipitation, averaging 72 mm (2.8 in) over about 14 days, coupled with high humidity at 91%. In contrast, September experiences a more moderate climate, with minimum temperatures around 2°C (36°F) and an average of 16°C (60°F). The temperatures can soar to a maximum of 34°C (93°F), making it feel much warmer. Precipitation is lower at 55 mm (2.2 in) over 10 days, and humidity is also reduced to 81%. For more details on September weather, visit Bonn weather in September.
In January, the weather is significantly colder with temperatures ranging from a minimum of -8°C (18°F) to a maximum of 14°C (58°F), creating a chilly environment with an average temperature of 3°C (38°F). The precipitation level is similar to October, with 72 mm (2.8 in) over 14 days, but the high humidity of 91% adds to the discomfort of the cold. In contrast, October offers a milder climate, with temperatures starting at a minimum of 0°C (33°F) and reaching up to 27°C (80°F), boasting an average temperature of 12°C (54°F). The precipitation remains at 71 mm (2.8 in) over the same number of days, but the slightly lower humidity of 88% makes for a more pleasant experience. For those interested in exploring the specifics of October’s weather, you can find more information here: Bonn weather in October.
January and November exhibit distinct weather patterns, with January generally being colder. In January, temperatures range from a minimum of -8°C (18°F) to a maximum of 14°C (58°F), with an average of 3°C (38°F). The month receives about 72 mm (2.8 in) of precipitation over approximately 14 days. In contrast, November sees milder temperatures, with lows of -4°C (26°F) and highs reaching 20°C (69°F), averaging around 7°C (45°F). There is less precipitation in November, totaling around 54 mm (2.1 in) over 12 days. Both months share a high humidity level of 91%, but the more temperate November conditions can feel more pleasant. For more details, you can check Bonn weather in November.
In comparing the weather of January and December, January tends to be slightly colder, with minimum temperatures dropping to -8°C (18°F) compared to December's minimum of -5°C (23°F). The average temperature in January is around 3°C (38°F), while December maintains a slightly warmer average of 5°C (41°F). Precipitation levels are also lower in January, totaling 72 mm (2.8 in) over 14 days, in contrast to December's 100 mm (4.0 in) spread across 19 days. Humidity remains high in both months, with January at 91% and December at 92%. For a detailed overview of December weather, visit Bonn weather in December.
January in Bonn is a month characterized by its chilly embrace, with temperatures often dipping significantly compared to the milder months that precede and follow it. The cold air is accompanied by a notable level of humidity and increased precipitation days, making this period feel quite damp and brisk. As the landscape takes on a wintery charm, visitors can experience the city's beauty in a unique light, although they should come prepared for fluctuating weather conditions. Overall, January's atmospheric conditions create an experience that starkly contrasts with the more temperate seasons. For further insights into Bonn’s weather patterns, check out Bonn Climate.