Last updated: February 26, 2025
In April, Heidelberg, Germany experiences a dynamic range of temperatures, from a brisk minimum of -4°C (25°F) to a pleasant maximum of 27°C (80°F), with an average temperature of 10°C (51°F). This month is characterized by moderate rainfall, accumulating to 35 mm (1.4 in) over approximately 8 days, contributing to an humidity level of around 83%. These climatic conditions create a vibrant atmosphere as spring unfolds, inviting both locals and visitors to enjoy the city’s enchanting scenery amidst the fresh blooms and budding landscapes.
In April, Heidelberg begins to awaken from winter's chill, showcasing a notable rise in temperatures that invites outdoor exploration. With minimums around -4°C (25°F), the city sheds its frosty layer, while average temperatures climb to a comfortable 10°C (51°F), reaching pleasant highs of 27°C (80°F). This month marks a significant shift from the earlier spring months, where temperatures were still hovering around freezing. As nature bursts into bloom, April not only brings warmth but also a sense of renewal, inviting residents and visitors alike to enjoy the picturesque landscapes and vibrant local culture during this delightful transition into spring.
April in Heidelberg sees a noticeable dip in precipitation, with only 35 mm (1.4 in) of rain recorded over 8 days, making it one of the drier months of the year. This contrasts starkly with the heightened rainfall of the preceding months, particularly March, which experienced 92 mm (3.6 in) over 14 days. As spring unfolds, the decrease in both the amount and frequency of rainy days in April may signal a shift toward brighter, sunnier weather, paving the way for the lush blooms of May. This trend reflects a typical transition for the region, balancing the wetter winter and pre-summer months, creating a refreshing change that many residents and visitors alike look forward to each year.
In April, the humidity in Heidelberg, Germany, dips to 83%, continuing a downward trend observed since the winter months. This decrease marks a refreshing shift from the frigid 91% of January, gradually easing to 87% in March. As spring unfolds, the air feels progressively drier, paving the way for a more comfortable atmosphere that many residents and visitors welcome. Looking ahead, the humidity continues to decline into May, settling at 79%, suggesting a trend towards warmer and less humid conditions as summer approaches. This month not only highlights the transition into spring but also sets the stage for the pleasant weather that characterizes the coming months.
As April unfolds in Heidelberg, Germany, the UV Index rises to 6, marking a shift to a high exposure category. With a burn time of just 25 minutes, it’s essential to take precautions if you're planning to spend time outdoors. This month signals the start of increased sun intensity, following the milder UV levels from January to March, which had burn times of 30 to 45 minutes. Looking ahead, May brings an even greater spike, with the UV Index reaching 8, indicating very high exposure. This trend highlights the importance of being sun-smart as the days become longer and sunnier. For more details on UV trends throughout the year, visit Heidelberg UV Index.
UV Risk Categories
April brings a delightful surge of sunshine to Heidelberg, Germany, with 347 hours of bright rays illuminating the city. This significant increase from March's 275 hours marks a clear transition into spring, hinting at the vibrant life that follows. As the days grow longer and warmer, the trend continues with May showcasing 386 hours, nudging nature into full bloom. The steady ascent of sunshine hours throughout the spring and into early summer reflects Heidelberg's enchanting charm, where each sun-drenched day offers an opportunity to explore its historic beauty and lush landscapes. As summer approaches, the city basks in an impressive 413 hours of sunshine in July, making it a perfect time for outdoor adventures and relaxation in this picturesque German gem.
As spring blooms in Heidelberg, April marks a turning point in sunny weather, delivering a 47% chance of sunshine that is one of the highest for the season. This is a noticeable increase compared to the previous winter months, with January offering a mere 13% chance, and even February and March only reaching 37% and 46% respectively. Interestingly, while May dips to 32%, the month still maintains an overall trend of increasing sunlight as the year progresses. April's sunshine is a promising harbinger of warmer days ahead, inviting residents and visitors to relish in the beautiful sights of blooming flowers and longer daylight hours.
As spring unfolds in Heidelberg, April marks a notable shift in daylight duration, basking in 13 hours of sunlight. This increase follows the gentle ascent from 11 hours in March, signaling a vibrant transition that paves the way for even longer days ahead. The progression of daylight reaches its peak in June with a remarkable 16 hours, but April stands out as a pivotal moment, where the growing warmth and extended evenings invite the city to thrive. As the months advance into May and June, daylight continues to stretch, offering Heidelberg's residents more opportunities to embrace the outdoors and enjoy the scenic beauty that the season brings.
In Heidelberg, April typically ushers in slightly calmer winds with an average speed of 2.7 m/s (6 mph), marking a gentle shift from the breezier days of earlier spring months. While March featured a more robust wind at 3.0 m/s, this drop suggests a subtle easing of winter's grip as the city transitions into a warmer climate. Interestingly, April's winds are less than May's projected uptick to 3.5 m/s, indicating a seasonal crescendo that continues to build as spring gives way to summer. The trend shows that while April could feel calmer, it often serves as a prelude to more spirited breezes ahead, offering a tranquil yet refreshing atmosphere that enhances Heidelberg's scenic beauty during this time of year.
The weather in Heidelberg changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April'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.
When comparing the weather in April and January, there are noticeable differences in temperature and precipitation patterns. April brings a minimum temperature of -4°C (25°F) and an average of 10°C (51°F), while January is considerably colder, with a minimum of -13°C (9°F) and an average of 2°C (36°F). The maximum temperature in April can reach a pleasant 27°C (80°F), making it a much more temperate month. In contrast, January's maximum temperature only reaches up to 13°C (55°F). Precipitation is also notable; while April sees 35 mm (1.4 in) over 8 days, January has a higher precipitation level of 78 mm (3.1 in) across 13 days. Additionally, January has a higher humidity average of 91% compared to April's 83%. For more detailed insights into January's climate, you can visit Heidelberg weather in January.
April weather in Heidelberg exhibits a noticeable warming trend compared to February. While February experiences colder temperatures with a minimum of -10°C (14°F) and an average of 4°C (39°F), April sees milder conditions, with temperatures ranging from a minimum of -4°C (25°F) to an average of 10°C (51°F) and a maximum of 27°C (80°F). Additionally, February has higher precipitation levels at 72 mm (2.8 in) over 11 days, compared to April's 35 mm (1.4 in) over 8 days, indicating generally drier conditions in the latter month. Humidity remains relatively high in both months, with February at 89% and April at 83%. For more detailed insights, you can check Heidelberg weather in February.
In comparison to March, April in Heidelberg experiences milder temperatures, with a minimum of -4°C (25°F) and an average of 10°C (51°F), compared to March's colder minimum of -10°C (15°F) and an average of 6°C (44°F). The maximum temperature also rises in April, reaching up to 27°C (80°F), while March peaks at 23°C (73°F). However, April sees less precipitation, totaling 35 mm (1.4 in) over 8 days, compared to March's higher 92 mm (3.6 in) across 14 days. Humidity slightly decreases from March's 87% to April's 83%, indicating a more comfortable atmosphere as spring takes hold. For more details on March weather, visit Heidelberg weather in March.
April and May present contrasting weather patterns. In April, temperatures range from a chilly minimum of -4°C (25°F) to a pleasant maximum of 27°C (80°F), with an average of 10°C (51°F). The month experiences 35 mm (1.4 in) of precipitation over 8 days, accompanied by high humidity levels at 83%. In contrast, May sees a mild increase in temperatures, with a minimum of 0°C (32°F), an average of 14°C (57°F), and a maximum of 31°C (88°F). However, it also witnesses higher rainfall, totaling 89 mm (3.5 in) over 13 days, though humidity slightly decreases to 79%. For a detailed look at the weather conditions in May, you can check Heidelberg weather in May.
April and June exhibit notable differences in weather patterns. In April, temperatures range from a chilly minimum of -4°C (25°F) to a pleasant average of 10°C (51°F), peaking at a warm 27°C (80°F), while June enjoys a much warmer average temperature of 19°C (67°F), with maximums soaring to 35°C (96°F). Precipitation is more frequent in June, with 85 mm (3.4 in) falling over 11 days, compared to April's 35 mm (1.4 in) over 8 days. Humidity levels remain quite similar, slightly dropping from 83% in April to 82% in June. For more insights on June weather, you can visit Heidelberg weather in June.
April and July present contrasting weather patterns. In April, temperatures range from a chilly -4°C (25°F) to a comfortable maximum of 27°C (80°F), with an average of 10°C (51°F). The month experiences around 35 mm (1.4 in) of precipitation over 8 days, coupled with a high humidity level of 83%. In contrast, July boasts warmer temperatures, with minimums of 8°C (47°F) and maximums soaring to 37°C (100°F), averaging at 20°C (68°F). Precipitation increases to 66 mm (2.6 in) and falls over 11 days, while the humidity remains consistent at 83%. For more detailed insights, you can check out Heidelberg weather in July.
April weather tends to be cooler and more variable, with temperatures ranging from a chilly minimum of -4°C (25°F) to a pleasant max of 27°C (80°F) and an average of 10°C (51°F). The month sees about 35 mm (1.4 in) of precipitation over approximately 8 days, maintaining a relatively high humidity level of 83%. In contrast, August offers a much warmer atmosphere, with minimum temperatures around 7°C (44°F) and maximums reaching 36°C (96°F), averaging 20°C (69°F). While August experiences more rainfall overall, totaling 60 mm (2.4 in) over approximately 12 days, the humidity slightly increases to 84%. For more details on weather patterns during this month, check out Heidelberg weather in August.
April and September present contrasting yet mildly temperate weather conditions. In April, temperatures range from a chilly minimum of -4°C (25°F) to a pleasant average of 10°C (51°F), peaking at 27°C (80°F) on warmer days. The month experiences around 35 mm (1.4 in) of precipitation over about 8 days, with humidity levels reaching 83%. In contrast, September typically offers a milder experience, with temperatures starting at a minimum of 4°C (39°F) and climbing to an average of 16°C (61°F), and highs of 31°C (89°F). It also sees a higher total precipitation of 58 mm (2.3 in) over the same number of days, with humidity slightly elevated at 85%. For more insights on September weather, check out Heidelberg weather in September.
April and October present distinct weather patterns as they transition between seasons. In April, temperatures range from a chilly minimum of -4°C (25°F) to a comfortable average of 10°C (51°F), peaking at a warm 27°C (80°F). The month sees around 35 mm (1.4 in) of precipitation over about 8 days, with humidity levels at a significant 83%. In contrast, October features a slightly warmer minimum of 2°C (35°F) and an average temperature of 11°C (52°F), with a maximum of 26°C (78°F). However, this month experiences more precipitation, averaging 74 mm (2.9 in) over 13 days, and a higher humidity level of 88%. Overall, while both months have mild temperatures, October tends to be wetter and more humid. For more details, visit Heidelberg weather in October.
April and November present contrasting weather patterns despite their similar minimum temperatures. In April, the average temperature rises to a milder 10°C (51°F) with a maximum of 27°C (80°F), resulting in more pleasant days. Precipitation is lower at 35 mm (1.4 in) over 8 days, while humidity hovers around 83%. In contrast, November, with an average temperature of 6°C (43°F) and a maximum of 21°C (70°F), sees increased rainfall with 57 mm (2.3 in) over approximately 10 days and a higher humidity level of 89%. For a detailed look at November weather, check out Heidelberg weather in November.
April typically offers a wider range of temperatures, with minimums around -4°C (25°F) and maximums reaching up to 27°C (80°F), creating an average of 10°C (51°F). In contrast, December experiences cooler conditions, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 14°C (58°F) and an average temperature of 4°C (39°F). Moreover, December sees significantly more precipitation, with 134 mm (5.3 in) falling over 19 days compared to April's 35 mm (1.4 in) across 8 days. Additionally, humidity levels are slightly higher in December at 91%, compared to April’s 83%. For more specific insights, you can refer to Heidelberg weather in December.
April in Heidelberg ushers in a refreshing change, as the transition from winter's chill to spring's embrace becomes palpable. With temperatures gradually rising, this month often showcases the region's delightful variability, featuring both warm sunny days and brisk nights. The typical April scene includes occasional showers, contributing to the vibrant blooming landscapes, though humidity remains high, creating a soft atmosphere. This month stands apart from the drier and warmer summer months, highlighting a unique blend of cool and mild weather that makes exploring the city particularly enjoyable. For a deeper dive into what to expect throughout the year, visit Heidelberg Climate.