Last updated: February 26, 2025
May weather in Heidelberg, Germany showcases a delightful mix of warmth and occasional showers. The maximum temperature can soar to a balmy 31°C (88°F), while the average hovers around 14°C (57°F), offering pleasant days. However, the evenings can be quite cool, with lows dipping to 0°C (32°F). Rainfall is a notable feature, with a total of 89 mm (3.5 in) spread over 13 days, contributing to the lush greenery of the region. With a humidity level of 79%, the environment feels refreshingly vibrant, making May a beautiful time to experience the charm of Heidelberg.
In Heidelberg, Germany, May heralds a delightful transition into warmer weather, with temperatures showcasing a remarkable shift from the chilly winter months. The month opens with a minimum temperature of 0°C (32°F), setting a refreshing tone, while the average climbs to a comfortable 14°C (57°F). As the days progress, peaks can reach a balmy 31°C (88°F), making it a perfect time to enjoy outdoor activities. This upward trend is reflective of spring fully blossoming, a stark contrast to the preceding months of April and earlier, where the temperatures were distinctly cooler. With each passing week, Heidelberg’s charm shines brighter under the warm sun, inviting both locals and visitors to revel in its scenic beauty.
In May, Heidelberg experiences a vibrant transition into late spring, marked by an average precipitation of 89 mm (3.5 in) over approximately 13 rainy days. This amount signifies a slight increase compared to the drier month of April, which saw only 35 mm (1.4 in), reflecting a trend towards wetter conditions as the season progresses. May's precipitation, while substantial, leads the city into the lush greenery of summer, providing essential moisture for blooming flora. The moderate rainfall is balanced by the burgeoning warmth, creating an ideal backdrop for outdoor activities, though residents should be prepared for the occasional spring shower. As the month gives way to June, the precipitation levels remain relatively steady, with 85 mm (3.4 in) anticipated, highlighting a consistent pattern of late spring rain that fosters the region's picturesque landscapes.
In May, Heidelberg experiences a noticeable drop in humidity levels, averaging around 79%. This trend marks a significant shift from the higher humidity seen in the earlier months, such as 91% in January and 89% in February. As spring progresses into late spring, the air becomes a bit crisper, allowing residents and visitors to enjoy outdoor activities with a more pleasant atmosphere. However, this relief is short-lived, as humidity begins to rise again starting in June, when it hovers around 82%. Overall, May serves as a transitional month where the air feels less oppressive, making it an ideal time to explore the beautiful sights of Heidelberg.
In May, Heidelberg, Germany, experiences a significant uptick in UV radiation, with the UV Index reaching a striking 8, categorized as very high. This dramatic increase from the moderate levels seen in earlier months highlights the need for sun protection, as the burn time drops to a mere 15 minutes. As spring transitions to summer, outdoor enthusiasts should be particularly cautious, ensuring they apply sunscreen and seek shade to protect against harmful UV rays. This month sets the stage for continued high UV levels into June and July, presenting a pattern that emphasizes the importance of awareness and safety in sun exposure. For more detailed information on monthly UV variations, visit Heidelberg UV Index.
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In Heidelberg, Germany, May shines brightly as a beacon of light, boasting 386 hours of sunshine, a significant leap from the previous months. This month marks a stunning transition from the long, gray days of winter, where January barely scraped 118 hours, to the vibrant, sun-drenched landscapes of late spring. May stands out not only for its considerable sunshine but also for the continuation of a splendid upward trend, with hours increasing steadily from April’s 347 hours. As summer approaches, sunshine peaks in July at 413 hours, blending pleasantly into the months that follow. This consistent surge highlights the region's shift towards brighter, warmer days, offering both residents and visitors the perfect backdrop to enjoy the blooming beauty of Heidelberg.
In May, Heidelberg experiences a 32% chance of sunny weather, a noticeable dip from the preceding months of March and April, which enjoy more favorable conditions with chances of 46% and 47% respectively. This trend suggests that while spring often brings plentiful sunshine, by May, the allure of sunny days begins to wane slightly, hinting at a gradual transition into the summer months. Comparatively, the sunny potential in May is lower than in September, which sees a 43% chance of sun, indicating that as the year progresses, sunshine becomes less predictable. However, with May still offering a respectable chance for bright days, it remains a lovely time to enjoy the outdoors, even if clouds are more likely to join the party.
In Heidelberg, Germany, the daylight duration experiences a noteworthy transition throughout the year, showcasing a clear trend of increasing light as spring unfolds. Starting with a modest 8 hours in January, the days gradually lengthen, reaching 15 hours by May. This significant increase highlights the arrival of warmer weather and longer evenings, perfect for outdoor activities and enjoying the stunning spring scenery. As summer approaches, June peaks at a vibrant 16 hours of daylight, but then we see a gentle decline into August with 14 hours and further into the autumn months. This rhythmic ebb and flow of daylight continues, bringing about a cozy retreat into shorter days as winter returns, ultimately cycling back to 8 hours in December. Each month in Heidelberg reflects this dynamic interplay between light and dark, marking the seasonal shifts with a beautiful canvas of time.
In Heidelberg, May brings a noticeable uptick in average wind speed, averaging 3.5 m/s (8 mph), making it the windiest month of spring. This marks a shift from the calmer conditions of April, which recorded only 2.7 m/s (6 mph). Following May, the winds begin to decline, with June seeing a decrease to 2.1 m/s (5 mph). This trend indicates a clear seasonal progression where spring ushers in a fresher and breezier atmosphere, perfect for enjoying the picturesque landscapes of Heidelberg. As the year unfolds, the fluctuating wind speeds illustrate the dynamic nature of the region’s climate, with May standing out as a time when the gentle breezes invite outdoor exploration.
The weather in Heidelberg changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May'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.
May and January present contrasting weather conditions. In May, temperatures range from a chilly 0°C (32°F) to a warm 31°C (88°F), with an average of 14°C (57°F). This month experiences a moderate amount of precipitation at 89 mm (3.5 in) over about 13 days, with humidity levels at 79%. In contrast, January is significantly colder, with temperatures dipping between -13°C (9°F) and a maximum of only 13°C (55°F), averaging just 2°C (36°F). Precipitation in January is slightly lower, at 78 mm (3.1 in) over the same number of days, but the humidity is higher at 91%. For a closer look at January weather specifics, visit Heidelberg weather in January.
May and February present strikingly different weather conditions. In May, temperatures range from a minimum of 0°C (32°F) to a maximum of 31°C (88°F), with an average of 14°C (57°F). This month typically experiences 89 mm (3.5 in) of precipitation over 13 days, accompanied by a humidity level of 79%. Conversely, February is much colder, with temperatures ranging from a minimum of -10°C (14°F) to a maximum of 18°C (65°F) and an average of just 4°C (39°F). Though it sees slightly less precipitation at 72 mm (2.8 in) over 11 days, the humidity is slightly higher at 89%. For more detailed information, check out Heidelberg weather in February.
When comparing the weather in May to March, it's clear that May enjoys milder temperatures, with average lows around 0°C rising to comfortable highs of 31°C, while March experiences a colder average, marked by lows of -10°C and a maximum temperature of only 23°C. Precipitation levels are quite similar, with March slightly ahead at 92 mm compared to May's 89 mm, but the number of rainy days is nearly identical, with 14 days in March and 13 in May. Humidity is slightly higher in March at 87%, compared to 79% in May. For more detailed insights, you can visit Heidelberg weather in March.
In comparing the weather conditions of April and May, it's evident that May tends to be warmer and wetter. May experiences a broader temperature range, with minimums of 0°C (32°F), averaging 14°C (57°F), and reaching up to 31°C (88°F). In contrast, April starts cooler, with temperatures dipping as low as -4°C (25°F) and an average of 10°C (51°F), peaking at 27°C (80°F). Additionally, May sees significantly more precipitation, totaling 89 mm (3.5 in) over 13 days, while April only receives 35 mm (1.4 in) across 8 days. Humidity levels are also slightly higher in April at 83%, compared to 79% in May. For more details on April weather specifically, you can check Heidelberg weather in April.
Comparing the weather in May and June reveals distinct changes in temperature and conditions. In May, temperatures range from a chilly minimum of 0°C (32°F) to a comfortable average of 14°C (57°F), with a maximum reaching 31°C (88°F). The month experiences a fair amount of rain, with 89 mm (3.5 in) of precipitation spread over 13 days, and humidity levels are relatively high at 79%.
In contrast, June shows a noticeable increase in temperatures, with a minimum of 7°C (45°F) and an average of 19°C (67°F), peaking at a warm maximum of 35°C (96°F). The precipitation slightly decreases to 85 mm (3.4 in) over just 11 days, while humidity rises slightly to 82%. For more detailed insights into the weather in June, you can check Heidelberg weather in June.
May and July present distinctly different weather patterns. In May, temperatures range from a chilly minimum of 0°C (32°F) to a warm maximum of 31°C (88°F), with an average of 14°C (57°F). This month experiences more precipitation, totaling 89 mm (3.5 in) over 13 days, contributing to a high humidity of 79%. In contrast, July showcases warmer temperatures, with minimums at 8°C (47°F) and maximums soaring to 37°C (100°F), averaging 20°C (68°F). Additionally, July has less rainfall at 66 mm (2.6 in) over 11 days, while maintaining a slightly higher humidity level of 83%. For more specific details about the weather in July, check out Heidelberg weather in July.
When comparing the weather in May and August, notable differences emerge. May has a wider temperature range, with minimums reaching 0°C (32°F) and maximums climbing to 31°C (88°F), while August features milder minimums at 7°C (44°F) and warmer maximums up to 36°C (96°F). Precipitation levels are higher in May, with a total of 89 mm (3.5 in) over 13 days, compared to August's 60 mm (2.4 in) over 12 days. Humidity levels are also relatively high in both months, with May at 79% and August slightly higher at 84%. For a deeper look into what to expect during this summer month, you can check Heidelberg weather in August.
May and September each showcase mild temperatures with some similarities, but they differ notably in several aspects of weather. In May, temperatures can dip as low as 0°C (32°F) and peak at 31°C (88°F), averaging around 14°C (57°F). This month experiences higher precipitation, with 89 mm (3.5 in) spread over 13 days, contributing to a humid environment with a humidity level of 79%.
In contrast, September sees a minimum temperature of 4°C (39°F) and an average of 16°C (61°F), while still reaching a maximum of 31°C (89°F). Precipitation drops significantly to 58 mm (2.3 in) across just 8 days, and humidity slightly increases to 85%. Thus, while both months may reach similar high temperatures, September tends to be drier and slightly cooler overall. For more detailed insights, you can check Heidelberg weather in September.
May and October present distinct contrasts in weather patterns. In May, temperatures range from a chilly 0°C (32°F) at night to a warm 31°C (88°F) during the day, with an average of 14°C (57°F). This month experiences significant rainfall, with a total of 89 mm (3.5 in) spread over 13 days, and humidity levels are moderately high at 79%. In contrast, October features milder temperatures, with minimums around 2°C (35°F) and maximums of 26°C (78°F), averaging 11°C (52°F). It sees slightly less precipitation at 74 mm (2.9 in) over the same number of rainy days, although humidity is higher at 88%. For more detailed insights, you can check out Heidelberg weather in October.
May and November present contrasting weather experiences. In May, temperatures can range from a chilly 0°C (32°F) at night to a warm 31°C (88°F) during the day, with an average of 14°C (57°F). This month sees relatively high humidity at 79% and a notable amount of precipitation, totaling 89 mm over 13 days. In contrast, November brings cooler conditions, with temperatures dipping to a minimum of -4°C (26°F) and averaging around 6°C (43°F). The maximum temperature reaches 21°C (70°F), and while it is less rainy at 57 mm across 10 days, humidity rises slightly to 89%. Overall, November feels much colder and damp compared to the mild and often warm May. For more details on November's weather, you can refer to Heidelberg weather in November.
In comparing the weather of May and December, it’s clear that both months present distinct climatic characteristics. May enjoys a wider temperature range with highs averaging 31°C (88°F) and more pleasant conditions, while December sees significantly cooler temperatures, with a maximum of only 14°C (58°F) and a chilling minimum of -6°C (21°F). Despite May's average humidity of 79%, December is notably more humid at 91%. Additionally, while May has less precipitation (89 mm or 3.5 in over 13 days), December experiences increased rainfall, totaling 134 mm (5.3 in) over 19 days. For more insights into December's weather specifics, you can explore Heidelberg weather in December.
May in Heidelberg presents a delightful transition into warmer weather, characterized by a refreshing balance between mild temperatures and increased humidity. Unlike the chill of earlier months, the days can reach a maximum of 31°C (88°F), inviting residents and visitors to embrace outdoor activities. However, May also brings a touch of unpredictability with an average of 13 rainy days, punctuating the warmth with refreshing showers. This combination of warmth and moisture makes May distinctively vibrant compared to the colder, drier months preceding it. For a deeper insight into the changing seasons, explore more at Heidelberg Climate.