Last updated: February 26, 2025
January in Heidelberg, Germany, offers a chill in the air as temperatures fluctuate between a maximum of 13°C (55°F) and a minimum of -13°C (9°F), with an average hovering around 2°C (36°F). This month sees about 78 mm (3.1 in) of precipitation spread across 13 days, contributing to a high humidity level of 91%. Despite the cold, the winter landscape charmingly transforms the city, offering a unique blend of frosty beauty and atmospheric allure for residents and visitors alike.
In January, Heidelberg, Germany, experiences a chilly transformation as winter settles in, with temperatures ranging from a brisk minimum of -13°C (9°F) to a relatively mild maximum of 13°C (55°F). The average temperature hovers around 2°C (36°F), offering a stark contrast to the warmer months just ahead. Notably, January's temperatures are at their lowest point of the year, showcasing a trend of gradually rising warmth as spring approaches. The coldest days are perfect for cozy indoor activities, while the occasional mild spell allows for brief outdoor excursions in the frost-kissed landscapes. As the month progresses, locals and visitors alike anticipate the gradual thaw and longer days that February promises.
In January, Heidelberg experiences an average precipitation of 78 mm (3.1 in), spread over approximately 13 days of rainfall. This sets a tone for a month characterized by damp and chilly weather, typical for winter. While January's precipitation slightly surpasses that of February, it is worth noting that the city sees a significant uptick in rain as the year progresses, especially in March at 92 mm. However, the most abundant rainfall occurs in December, highlighting a trend of increased moisture during the winter months. As spring approaches, the precipitation begins to taper off in April, with just 35 mm, creating a noticeable contrast with the wetter winter months. Overall, January's rainfall reflects Heidelberg's seasonal rhythm, encompassing both the challenges and beauty of its winter climate.
January in Heidelberg, Germany, is marked by a high humidity level of 91%, setting the tone for a month that feels particularly damp and chill. This figure is consistent with the city’s winter climate, where humidity remains elevated throughout the season. As the months progress, a gradual decline is observed, with February and March recording 89% and 87% humidity, respectively. However, the trend shifts slightly in the warmer months of spring and summer, culminating in April's 83% and a return to the low 80s in June and July. The humidity begins to rise again as fall approaches, peaking once more at 91% in December. Overall, Heidelberg experiences a cycle where humidity is highest in the coldest months, creating a unique atmospheric pattern that plays a significant role in the region's climate throughout the year.
In January, Heidelberg experiences a low UV Index of 2, indicating minimal sun exposure risk, with a burn time of about 45 minutes. As winter progresses into February and March, the UV Index gradually increases to 3 and 4, respectively, shifting to a moderate exposure category and reducing the safe burn time to 30 minutes. The arrival of April brings a notable spike, as the UV Index rises to 6, marking a transition to a high exposure, which means one should be more vigilant about sun protection, especially with a burn time decreasing to 25 minutes. As the days warm through May to July, UV levels peak at 8, categorized as very high, urging even greater caution with a rapid burn time of just 15 minutes. Following this summer intensity, the index gradually declines in August and September, returning to a high of 6 before tapering off once more in fall and winter months. Overall, this cyclical pattern highlights the importance of adapting sun safety measures throughout the year. For more insights, visit Heidelberg UV Index.
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In January, Heidelberg experiences a modest 118 hours of sunshine, setting the stage for a gradual increase as the year progresses. February sees a notable jump to 205 hours, hinting at the lengthening days that herald the arrival of spring. By March, the sun shines for 275 hours, and the warmth begins to permeate the air, further enhancing the city's vibrant landscape. As the months roll on, April and May bask in 347 and 386 hours respectively, inviting blooming flowers and outdoor gatherings. The peak of sunshine occurs in July with an impressive 413 hours, marking the height of summer festivities. However, as autumn approaches, a gentle decline is observed: August offers 385 hours, and September dips to 321 hours. This downward trend continues into the cooler months, wrapping up the year with 185 hours in November and 134 hours in December. The cyclical dance of sunshine not only delineates the changing seasons in Heidelberg but also reflects its charm throughout the year.
When it comes to sunny weather in Heidelberg, Germany, January is generally a tranquil month, boasting a modest 13% chance of sunshine. This stark contrast is particularly notable when compared to the subsequent months; for instance, sunshine possibilities rise significantly in February to 37% and continue to increase as spring approaches, peaking at 47% in April and March. As the year progresses, sunny days remain relatively consistent, with late summer months seeing a decline but still offering a respectable 30% chance in August. Overall, while January might be one of the cloudier months, the transition into spring brings a welcome increase in sunlit days, helping to invigorate the landscape and lift spirits.
In Heidelberg, Germany, the journey through January reveals a gradual awakening of sunlight as the month draws on. With only 8 hours of daylight, January represents the tail end of winter's hibernation, where the days are at their shortest. However, this modest illumination begins to blossom into 10 hours by February, signaling a shift as spring approaches. As we progress into March and April, daylight stretches further to 11 and 13 hours, respectively, inviting longer, brighter days that rejuvenate both nature and spirit. This upward trend continues into the summer months, reaching a peak of 16 hours in June, the zenith of daylight. Even as summer fades, daylight remains significant; July and August offer 15 and 14 hours, before gently descending back to 12 hours in September. The cycle repeats as October and November usher in shorter days once again, culminating in another 8 hours by December. This rhythmic ebb and flow of daylight not only marks the changing seasons but also encapsulates the vibrant life of Heidelberg throughout the year.
In Heidelberg during January, the average wind speed reaches a brisk 3.2 m/s (7 mph), setting a tone that is slightly fresher than in the subsequent months. Interestingly, February sees a small drop to 2.9 m/s, closely followed by a slight recovery in March, where the winds pick up to 3.0 m/s. It appears that the early months of the year generally maintain a moderate breeziness, peaking again in May at 3.5 m/s (8 mph) before transitioning to lighter winds in the summer months. The trend indicates a gradual decline in wind speed as the year progresses, hitting a low of 2.0 m/s (4 mph) in September, before slightly climbing back up to 2.6 m/s by October. This seasonal variation reflects the gentle shift from winter's crisp breath to summer's soft whispers, highlighting the charming and ever-changing character of Heidelberg's winds throughout the year.
The weather in Heidelberg 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 Heidelberg and find detailed weather information for every month.
January and February present distinct differences in weather. January typically experiences colder temperatures with a minimum of -13°C (9°F) and an average of 2°C (36°F), while February sees a slight rise in temperatures, ranging from a minimum of -10°C (14°F) to an average of 4°C (39°F). Additionally, February can reach milder maximum temperatures of up to 18°C (65°F), compared to January's peak of 13°C (55°F). Precipitation levels are similar, with January receiving 78 mm (3.1 in) over 13 days, while February has slightly lower precipitation at 72 mm (2.8 in) over 11 days. Humidity remains quite high in both months, at 91% for January and 89% for February, indicating a damp atmosphere. For more detailed information, you can check Heidelberg weather in February.
In January, the weather is notably colder, with average temperatures ranging from a chilling -13°C (9°F) to a mild 13°C (55°F), and a high humidity of 91%. The month sees about 78 mm (3.1 in) of precipitation over approximately 13 days, making it a rather damp and chilly time of year. In contrast, March brings a gradual warming trend, with temperatures ranging from -10°C (15°F) to a pleasant max of 23°C (73°F), averaging around 6°C (44°F). Precipitation increases slightly to 92 mm (3.6 in) over about 14 days, and humidity decreases to 87%. For more detailed information on March weather, you can check Heidelberg weather in March.
January and April present a stark contrast in weather conditions. January often greets residents with frigid temperatures, ranging from a chilling minimum of -13°C (9°F) to a mild maximum of 13°C (55°F), while April sees significant warmth with temperatures ranging from -4°C (25°F) to a maximum of 27°C (80°F). Precipitation is more frequent in January, averaging 78 mm (3.1 in) over 13 days, compared to April's lighter rainfall of 35 mm (1.4 in) across just 8 days. Additionally, January's humidity levels are higher at 91%, while April's humidity drops slightly to 83%, making for a much more comfortable atmosphere during the spring month. For more details, check out Heidelberg weather in April.
In January, the weather is considerably colder, with temperatures ranging from a frigid minimum of -13°C (9°F) to a milder maximum of 13°C (55°F), while the average temperature hovers around 2°C (36°F). Precipitation is relatively low with about 78 mm (3.1 in) falling over 13 days, and the air feels quite humid at 91%. In stark contrast, May brings a dramatic shift in climate: temperatures begin at 0°C (32°F) but can soar to a high of 31°C (88°F), with an average of 14°C (57°F). While precipitation slightly increases to 89 mm (3.5 in) over the same number of days, the humidity decreases to a more comfortable 79%. This transition marks a welcome move from the chill of winter to the warmth of spring. For more details, check out Heidelberg weather in May.
In January, the weather is characterized by cold temperatures with a minimum of -13°C (9°F) and an average of just 2°C (36°F), reaching a maximum of 13°C (55°F). The month also experiences significant humidity at 91% and sees about 78 mm (3.1 in) of precipitation over 13 days. In contrast, June brings milder and more comfortable weather, with a minimum temperature of 7°C (45°F) and an average of 19°C (67°F), peaking at a warm 35°C (96°F). Although precipitation increases slightly to 85 mm (3.4 in), it occurs over a shorter duration of 11 days, and humidity drops to 82%. For more specific details about the weather in June, you can visit Heidelberg weather in June.
In January, the weather is quite chilly, with temperatures ranging from a brisk -13°C (9°F) to a mild 13°C (55°F), averaging around 2°C (36°F). The month experiences considerable precipitation, totaling 78 mm (3.1 in) over 13 days, accompanied by high humidity levels at 91%. In contrast, July presents a much warmer climate, where temperatures vary from a comfortable 8°C (47°F) to a scorching 37°C (100°F), averaging 20°C (68°F). Although July sees slightly less precipitation at 66 mm (2.6 in) over 11 days, the humidity remains relatively high at 83%. For those interested in more details, check out Heidelberg weather in July.
In January, the weather is notably cold, with temperatures often dropping to a minimum of -13°C (9°F) and averaging around 2°C (36°F), reaching a maximum of 13°C (55°F). The month experiences substantial precipitation of 78 mm (3.1 in) over approximately 13 days, accompanied by high humidity levels at 91%. In stark contrast, August brings much warmer conditions, with minimum temperatures around 7°C (44°F) and an average of 20°C (69°F), peaking at a sweltering 36°C (96°F). While August experiences slightly less precipitation, at 60 mm (2.4 in) over about 12 days, the humidity is relatively lower at 84%. For more details, check out Heidelberg weather in August.
In January, the weather is starkly cold, with temperatures ranging from a frigid minimum of -13°C (9°F) to a more moderate maximum of 13°C (55°F), and an average of 2°C (36°F). The high humidity at 91% combined with 78 mm (3.1 in) of precipitation over 13 days creates a distinctly chilly atmosphere. In contrast, September brings a welcome warmth, with temperatures starting at a minimum of 4°C (39°F) and soaring to a maximum of 31°C (89°F), averaging 16°C (61°F). With only 58 mm (2.3 in) of precipitation spread across 8 days and lower humidity at 85%, September offers a much drier and more pleasant climate. For more details, check out Heidelberg weather in September.
January and October present quite different weather experiences. In January, temperatures can plummet as low as -13°C (9°F), with an average temperature of around 2°C (36°F) and a maximum of 13°C (55°F). The month sees significant precipitation, amounting to 78 mm (3.1 in) over approximately 13 days, coupled with high humidity at 91%.
In contrast, October offers a milder climate with minimum temperatures around 2°C (35°F) and an average of 11°C (52°F), peaking at a comfortable 26°C (78°F). Precipitation in October is slightly lower at 74 mm (2.9 in) over the same duration of 13 days, but humidity levels remain relatively high at 88%. For more details about October weather in Heidelberg, check out Heidelberg weather in October.
In January, temperatures can be quite frigid, with a minimum of -13°C (9°F) and an average of just 2°C (36°F), while November sees milder conditions with minimum temperatures around -4°C (26°F) and an average of 6°C (43°F). The winter month of January also experiences more precipitation, totaling 78 mm (3.1 in) over 13 days, compared to November's 57 mm (2.3 in) over 10 days. Additionally, humidity levels are slightly higher in January at 91%, while in November, it remains at a comfortable 89%. For more detailed information, you can check out Heidelberg weather in November.
In comparing January and December weather, January experiences slightly colder temperatures with a minimum of -13°C (9°F) and an average of 2°C (36°F), while December is milder, with a minimum of -6°C (21°F) and an average of 4°C (39°F). Additionally, January typically sees less precipitation at 78 mm (3.1 in) over 13 days, compared to December's higher total of 134 mm (5.3 in) over 19 days. Interestingly, both months share the same high humidity level of 91%. For more details on the weather during this month, check out Heidelberg weather in December.
January in Heidelberg presents a notably chillier landscape compared to other months, with temperatures often dipping well below freezing and an average humidity of 91% that creates a crisp atmosphere. This month experiences a significant amount of precipitation, with about 13 rainy days contributing to a total of 78 mm of rainfall, making it one of the wetter months of the year. As you navigate through the cold, it’s important to prepare for the fluctuating weather, which can swing from mild, sunny afternoons to frigid, overcast days. For a deeper understanding of how the January climate fits into the broader yearly patterns, explore the detailed insights at Heidelberg Climate.