Last updated: February 26, 2025
April in Mainz, Germany presents a delightful mix of spring weather, characterized by maximum temperatures reaching up to 27°C (80°F), while the average settles at a mild 10°C (50°F). The climate can still be chilly with minimum temperatures dropping to -4°C (26°F) at night. Visitors can expect around 34 mm (1.3 in) of precipitation over approximately 7 days, contributing to the region's vibrant blossom and lush greenery. High humidity levels at 83% add a touch of dampness to the air, creating an invigorating atmosphere that highlights the charm of this historical city during the spring season.
April in Mainz marks a delightful transition into spring as temperatures begin to rise significantly from the winter chill. With a minimum of -4°C (26°F), the month starts off cool but quickly embraces warmth, reaching an average of 10°C (50°F) and peaking at a maximum of 27°C (80°F). This upward trend showcases the city's shift from the frigid conditions of winter to the breezy, mild days of late spring. As the blossoms start to flower, April’s temperatures create the perfect backdrop for outdoor activities and leisurely strolls along the Rhine, inviting both locals and visitors to enjoy the vibrant renewal of the season.
In April, Mainz experiences a significant dip in precipitation, recording only 34 mm (1.3 in), the lowest since January. This pattern marks a transition into spring, with just 7 rainy days accompanying the month, compared to the wetter months preceding it. The reduction in rainfall brings a welcome change as the city begins to emerge from winter's grasp, allowing residents and visitors alike to enjoy more outdoor activities. Interestingly, this decline in precipitation paves the way for a noticeable increase in rainfall during May, hinting at the dynamic weather patterns characteristic of the region.
April in Mainz, Germany, witnesses a notable drop in humidity, settling at 83% compared to the 87% of March. This reflects a consistent trend of decreasing humidity as spring unfolds, following the damp chill of winter months, which recorded humidity levels as high as 91% in January. As the year progresses, humidity continues to decline, reaching its lowest point of 79% in May, before stabilizing in the summer months. This gradual reduction not only enhances the comfort of the warming weather but also sets the stage for the lush landscapes that characterize the region during this blooming season.
As April arrives in Mainz, Germany, the UV Index rises to 5, indicating a moderate exposure category with a burn time of just 30 minutes. This gradual increase from the lower indices of winter months reflects the shifting dynamics of spring, where sunlight becomes more prevalent and skin sensitivity to UV rays heightens. With the UV Index set to climb further in May, reaching a very high level of 8, April serves as a vital reminder to start incorporating sun protection into your daily routine. Embrace the warmer days, but be vigilant against UV exposure, as it signifies the transition to the sun-drenched months ahead. For more information on UV levels, you can visit Mainz UV Index.
UV Risk Categories
As April arrives in Mainz, Germany, the city basks in a significant surge of sunshine, accumulating an impressive 344 hours of bright daylight. This marks a notable increase from the 264 hours recorded in March, heralding the arrival of spring and its vibrant transformation. The warming days of April set the tone for an even sunnier May, where residents can anticipate 382 hours of sunshine, further igniting the seasonal cheer. This upward trend in sunlight illuminates not only the city's picturesque landscapes but also the spirits of its inhabitants, who eagerly embrace the longer days as they transition from the cold confines of winter into the blossoming warmth of spring and summer.
April in Mainz, Germany, marks a notable transition in the likelihood of sunny weather, featuring a 44% chance of sunshine. This trend follows a gradual increase from the drearier months of winter; January and February see only 12% and 33% sun chances, respectively. As spring unfolds, sunshine becomes more frequent, peaking at 45% in March before slightly dipping in April. This fluctuation hints at the dynamic nature of early spring weather, where sunshine is both celebrated and fleeting, setting the stage for the burgeoning warmth of May and beyond, which further shifts to a less predictable 31% chance of sunny days. Overall, April offers a delightful promise of brighter days ahead, even if the sun doesn't shine constantly.
As spring unfolds in Mainz, Germany, April heralds a significant shift in daylight duration, offering around 13 hours of sunlight—an increase that reflects the gradual lengthening of days following the darker winter months. This trend continues as May approaches, promising an even more generous 15 hours of daylight. The progression from January's 8 hours to April's bright offerings not only brightens the city but also invigorates outdoor activities and social gatherings. The transition showcases a vibrant transformation as nature awakens, inviting residents and visitors alike to bask in the warmth and light that spring delivers, setting the stage for the sunniest months ahead.
As the season changes in Mainz, Germany, April brings a gentle shift in the average wind speed, which drops to 2.7 m/s (6 mph). This marks a slight decline from the preceding months, particularly March, when winds were more spirited at 3.0 m/s (7 mph). Interestingly, April's breezy demeanor is moderate compared to the stronger gusts anticipated in May, where the average wind speed picks up to 3.4 m/s (8 mph). Overall, the trend suggests a transitional calmness in April, creating a perfect backdrop for spring's bloom before the winds pick up again in the approaching month.
The weather in Mainz 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 Mainz and find detailed weather information for every month.
When comparing the weather in April and January, significant differences emerge. In April, temperatures range from a minimum of -4°C (26°F) to a maximum of 27°C (80°F), with an average of 10°C (50°F), showcasing the arrival of spring. In contrast, January experiences much colder temperatures, with a minimum of -9°C (15°F), an average of 2°C (37°F), and a maximum of 13°C (55°F). Precipitation is also higher in January, totaling 56 mm (2.2 in) over 11 days, compared to April's 34 mm (1.3 in) over 7 days. Additionally, January has a slightly higher humidity level at 91% compared to April's 83%. For more details on January weather, you can visit Mainz weather in January.
April generally experiences milder temperatures compared to February, with an average of 10°C (50°F) compared to February's 4°C (39°F). While both months can experience a range of conditions, February tends to be colder with minimum temperatures dropping as low as -11°C (13°F), whereas April's minimum is slightly more bearable at -4°C (26°F). Precipitation is slightly lower in April at 34 mm (1.3 in) over 7 days, compared to February's 52 mm (2.0 in) over 11 days. Additionally, April's humidity is marginally lower at 83%, while February records a higher level at 89%. For a more detailed look at February weather, you can refer to Mainz weather in February.
In comparing the weather patterns of March and April, it's clear that April offers a more varied climate. The average temperature in April reaches 10°C (50°F), a notable increase from March's average of 6°C (44°F), while April also sees higher maximum temperatures, peaking at 27°C (80°F) compared to March’s maximum of 22°C (72°F). However, March experiences colder minimum temperatures, dipping down to -11°C (13°F), while April's lowest temperature is a milder -4°C (26°F). In terms of precipitation, March is wetter, recording 63 mm (2.5 in) over 13 days, versus April's 34 mm (1.3 in) across 7 days. Humidity remains relatively high in both months, with March slightly higher at 87% compared to April's 83%. For more detailed insights into March's weather, visit Mainz weather in March.
April and May present a noticeable shift in weather patterns. April experiences temperatures ranging from a brisk minimum of -4°C (26°F) to a pleasant maximum of 27°C (80°F), with an average temperature of 10°C (50°F). It sees a relatively low precipitation level of 34 mm (1.3 in) over 7 days and maintains a high humidity of 83%. In contrast, May brings warmer temperatures, with a minimum of 0°C (33°F), an average of 14°C (57°F), and a peak of 32°C (90°F). However, it also has increased precipitation at 71 mm (2.8 in) spread over 12 days, while humidity slightly decreases to 79%. For more detailed information, visit Mainz weather in May.
April and June present quite different weather experiences. In April, temperatures range from a chilly minimum of -4°C (26°F) to a comfortable average of 10°C (50°F), occasionally peaking at 27°C (80°F). The month sees about 34 mm (1.3 inches) of precipitation over 7 days, coupled with a high humidity of 83%. In contrast, June offers warmer conditions, with temperatures starting at a minimum of 7°C (45°F) and averaging 19°C (67°F), reaching highs of up to 36°C (97°F). Precipitation increases to 76 mm (3.0 inches) over 11 days, maintaining similar humidity levels at 82%. For more detailed information, you can check out Mainz weather in June.
April weather presents a more variable climate, with temperatures ranging from a chilly minimum of -4°C (26°F) to a comfortable average of 10°C (50°F) and peaking at 27°C (80°F). In contrast, July experiences a warmer and more consistent climate, with minimums of 8°C (47°F), an average of 20°C (69°F), and maximum temperatures soaring to 39°C (103°F). While April sees less overall precipitation (34 mm or 1.3 in) across 7 days, July has higher rainfall totaling 64 mm (2.5 in) over 11 days, despite maintaining the same humidity level of 83%. For more insights on July weather, visit Mainz weather in July.
April and August present distinctly different weather patterns. In April, temperatures range from a chilly minimum of -4°C (26°F) to a pleasant maximum of 27°C (80°F), with an average temperature of around 10°C (50°F). The month experiences about 34 mm (1.3 in) of precipitation over 7 days, accompanied by high humidity levels at 83%.
In contrast, August sees warmer conditions with a minimum temperature of 7°C (44°F) and a much higher average of 20°C (68°F), reaching up to 36°C (96°F) at times. Precipitation increases to 60 mm (2.3 in) spread across 12 days, with humidity slightly rising to 84%. For more detailed information, check out Mainz weather in August.
April and September present contrasting weather patterns. In April, temperatures range from a brisk minimum of -4°C (26°F) to a pleasant average of 10°C (50°F), peaking at a warm 27°C (80°F). The month sees an average precipitation of 34 mm (1.3 in) over 7 days, with humidity levels at 83%. In contrast, September offers a milder climate, with minimum temperatures starting at 3°C (37°F) and an average of 16°C (61°F), reaching a maximum of 33°C (91°F). Rainfall increases slightly to 45 mm (1.8 in) over the same number of days, accompanied by a slightly higher humidity of 85%. For more detailed information, you can check Mainz weather in September.
April and October exhibit distinct weather patterns, with April showcasing a broader temperature range, from a chilly minimum of -4°C (26°F) to a warm maximum of 27°C (80°F), while averaging around 10°C (50°F). In contrast, October features milder temperatures, with a minimum of 0°C (32°F) and a maximum of 26°C (79°F), averaging at 11°C (52°F). Precipitation is more pronounced in October, totaling 53 mm (2.1 in) over 11 days, compared to April's 34 mm (1.3 in) over 7 days. Both months are characterized by relatively high humidity, with April at 83% and October slightly higher at 88%. For more specifics about the conditions in October, check out Mainz weather in October.
April and November present contrasting weather patterns despite their similar minimum temperatures, with both months starting at around -4°C (25°F). In April, the average temperature rises to a warmer 10°C (50°F), peaking at 27°C (80°F), while November experiences a cooler average of 6°C (43°F) with a maximum of 21°C (70°F). Precipitation levels also differ, with April receiving 34 mm (1.3 in) over about 7 days compared to November's 47 mm (1.9 in) over 11 days, making November slightly wetter. Additionally, humidity is higher in November, averaging 89% compared to April's 83%. For more detailed insights, you can explore Mainz weather in November.
When comparing the weather in April and December, we see notable differences in temperature and precipitation. April experiences a broader temperature range, with minimums around -4°C (26°F) and maximums reaching 27°C (80°F), resulting in a comfortable average of 10°C (50°F). In contrast, December is cooler overall, with average temperatures hovering around 4°C (39°F), ranging from a minimum of -6°C (21°F) to a maximum of 14°C (58°F). Additionally, December tends to be wetter, receiving 94 mm (3.7 in) of precipitation over 17 days compared to April’s 34 mm (1.3 in) across 7 days. This leads to a higher humidity level in December at 91%, slightly exceeding April’s 83%. For more detailed insights, you can check Mainz weather in December.
As April unfolds in Mainz, the weather presents a vibrant transition from the chill of winter to the warmth of spring. With temperatures that can reach a pleasant 27°C (80°F), this month is notably warmer compared to the colder winter months, yet it still feels cool, particularly with an average of 10°C (50°F). Humidity levels peak at 83%, creating a sense of freshness in the air, while a moderate precipitation of 34 mm (1.3 in) over about a week brings both the beauty of blossoming flowers and the potential for spring showers. This blend of warmth and moisture makes April a unique month in Mainz's climate calendar, striking the perfect balance between briskness and warmth. For a deeper dive into what to expect throughout the year, explore the Mainz Climate page.