April Weather in Ulm, Germany

Last updated: February 26, 2025

April in Ulm, Germany is a month of contrast, where temperature swings create a dynamic climate. With a maximum temperature reaching 26°C (79°F), residents can enjoy warm spring days, while the average hovers around a brisk 9°C (48°F) and the occasional chill may bring temperatures down to a minimum of -6°C (21°F). Rainfall adds to the mix, with a total of 42 mm (1.7 in) spread across 9 days, contributing to the region’s lush greenery. The humidity levels can be quite high at 83%, creating a refreshing, albeit damp atmosphere, typical of early spring in this picturesque German city.

April Temperature in Ulm

April in Ulm, Germany, marks a vibrant transition from the chill of winter to the warmth of spring. With minimum temperatures rising to a chilly -6°C (21°F) and reaching a pleasant average of 9°C (48°F), days become noticeably milder. The warmth peaks with maximum highs soaring up to 26°C (79°F), showcasing a significant leap compared to the earlier months. This shift reflects an overall upward trend in temperature as Ulm shakes off the cold and embraces the budding season, inviting residents and visitors alike to enjoy the blossoming scenery and longer days. The increasing warmth in April sets the stage for even milder May and June, creating an enticing atmosphere for outdoor activities in this picturesque German city.

April Weather in Ulm: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Ulm, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec323641485463656557503935
Data source: Temperature data for Ulm generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Ulm

April in Ulm, Germany, brings a noticeable shift in precipitation patterns as the region transitions into spring. With 42 mm (1.7 in) of rain falling over just 9 days, April's precipitation is lower than the preceding months, reflecting a trend toward drier conditions as the year progresses. This reduction in both amount and frequency marks a departure from the wetter start of the year, where January through March each saw more consistent rainfall. Looking ahead, May's expected spike to 106 mm (4.2 in) and increasing precipitation days reinforces the seasonal transition, suggesting that while April may be milder, the wet spring routine soon resumes, nurturing the blooming landscapes of Ulm.

April Precipitation Trends in Ulm

The chart displays monthly precipitation patterns in Ulm, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec676668421061249010764675098
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Ulm

April in Ulm, Germany marks a noticeable shift in humidity, as levels drop to 83% from the preceding months' higher percentages. This gradual decline begins in January, where humidity peaks at 91%, and continues steadily through early spring, reaching 87% in March. The transition reflects the arrival of milder weather and the drying effects of springtime breezes, paving the way for May’s slightly lower humidity of 79%. As the season progresses into summer, humidity levels fluctuate around the mid-80s, indicating a balance between warmth and moisture. This trend underscores the dynamic interplay of seasonal changes, where Ulm enjoys a refreshing escape from the winter dampness as it moves into the blooming months ahead.

April Average Humidity in Ulm

This chart illustrates the average monthly humidity levels in Ulm, with April's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how April's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%83%79%82%83%84%86%88%89%91%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Ulm

April in Ulm, Germany marks a noticeable shift in UV exposure, with a UV Index rising to 6 and an accompanying high exposure category. This change indicates that while the days are becoming sunnier and more inviting, it's crucial to adopt sun safety practices, as the burn time decreases to just 25 minutes. The increase from March’s moderate index of 5 signifies that the danger associated with UV radiation is intensifying as spring progresses. As the weeks roll on, residents and visitors alike should be prepared for a significant leap in UV exposure as May approaches, promising even higher indexes. For those looking to understand the UV trends throughout the year, more insights can be found at Ulm UV Index.

Maximum UV Index Levels in Ulm for April

The chart shows the monthly maximum UV Index (UVI) for Ulm in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235689986422
Data source: Ulm April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

April Sunshine in Ulm

April in Ulm, Germany, brings a delightful burst of sunlight, with 347 hours illuminating the city, a significant rise from the 289 hours in March. This trend of increasing sunshine hours showcases the transition into spring, as the days grow longer and warmer, setting the stage for an even brighter May, which records 372 hours. This upward trajectory not only enhances the charm of Ulm's picturesque architecture and the Danube River but also reflects a broader seasonal pattern, where each month leading up to summer sees a steady increase in sunshine. With June peaking at 389 hours, the city basks in the warmth, allowing both locals and visitors to fully embrace the vibrant life that accompanies the sunny days ahead.

Monthly Sunshine Duration in Ulm: April Highlighted

The April sunshine duration represents the total number of hours Ulm experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec139h218h289h347h372h389h414h380h315h266h209h161h
Data source: Ulm April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ulm During April

As April rolls into Ulm, Germany, the likelihood of sunny weather begins to brighten, boasting a 42% chance of sunshine. This marks a noticeable increase from the preceding months of winter, where January's meager 11% grin of sunlight gives way to March's 40%. Although April's sunlit prospects are strong, they are quickly followed by May's 29%, suggesting a transitional phase as spring unfolds. Interestingly, April not only stands out for its balance between sun and clouds but also hints at a broader trend; the months surrounding it—particularly March and September—show varying sunny chances, punctuating the seasonal shifts that Ulm experiences throughout the year.

Percentage of Sunny Days in April in Ulm

The chart illustrates the percentage of sunny days in Ulm throughout the year, with April highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ulm experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec11%37%41%42%29%35%32%34%46%31%18%15%
Data source: Ulm April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ulm in April

As spring unfolds in Ulm, Germany, April brings a significant increase in daylight duration, with the sun gracing the city for an impressive 13 hours each day. This marks a noticeable shift from the shorter days of winter, showcasing a gradual ascent that began in January with just 8 hours of light. The transition from the chilly shades of winter to the warming embrace of spring becomes increasingly evident, as February and March both experience incremental gains, climbing to 10 and 11 hours, respectively. By April, the days lengthen further, heralding the arrival of more outdoor activities and vibrant life, all while paving the way for the long, sun-drenched days of May and June, where daylight peaks. This trend not only brightens the landscape but also uplifts spirits, inviting residents to revel in the beauty of blooming nature and the longer evenings ahead.

Average Daylight Hours in Ulm for April

The chart illustrates the variation in daylight duration in Ulm throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 47m10h 11m11h 55m13h 42m15h 15m16h 2m15h 37m14h 14m12h 31m10h 45m9h 11m8h 21m
Data source: Ulm daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Ulm

In April, Ulm, Germany experiences a gentle breeze, with an average wind speed of 2.7 m/s (6 mph), marking a noticeable dip from the higher winds of the previous months. This decrease is part of a subtle trend observed as winter transitions to spring, where January and February boast average speeds of 3.4 m/s (8 mph) and 3.0 m/s (7 mph) respectively, before leveling off in March. As the city prepares for the warmer months, wind speeds begin to rise again in May, suggesting a gradual return of breezier days. Overall, April's calming winds offer a serene backdrop to the burgeoning spring scenery, encouraging outdoor exploration and the enjoyment of blooming landscapes.

Average April Wind Speed in Ulm

The chart displays monthly wind speed patterns in Ulm, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.43.03.02.7 m/s3.62.22.32.52.02.62.53.2
Data source: Ulm April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Ulm Compares to Other Months

The weather in Ulm 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 Ulm and find detailed weather information for every month.

April and January present contrasting weather patterns. In January, temperatures range from a chilly -15°C (5°F) at night to a maximum of 13°C (56°F) during the day, with an average of 0°C (33°F). The month experiences a high humidity of 91% and receives around 67 mm (2.6 in) of precipitation over 11 days. In contrast, April brings milder temperatures, with minimums of -6°C (21°F), averages of 9°C (48°F), and maximums soaring to 26°C (79°F). The precipitation decreases to 42 mm (1.7 in) across 9 days, accompanied by slightly lower humidity at 83%. For more details about January's climate, visit Ulm weather in January.

April weather in Ulm is generally milder compared to February, with average temperatures rising from a minimum of -6°C (21°F) in April to a maximum of 26°C (79°F), creating a more pleasant atmosphere. In contrast, February experiences much colder temperatures, dipping to as low as -18°C (-1°F), with an average of just 2°C (37°F). While April boasts only 42 mm (1.7 in) of precipitation over about 9 days, February has a higher precipitation level of 66 mm (2.6 in) spread over 11 days. Additionally, April tends to have slightly lower humidity at 83%, compared to February's 89%. For more detailed insights into February's weather, check out Ulm weather in February.

In comparing the weather between March and April, it's evident that April brings a significant rise in temperatures, with an average of 9°C (48°F) compared to March's average of 5°C (41°F). The minimum and maximum temperatures also reflect this change, with April experiencing a minimum of -6°C (21°F) and a maximum of 26°C (79°F), while March sees a minimum of -16°C (3°F) and a maximum of 21°C (70°F). Precipitation levels drop from 68 mm (2.7 in) over 13 days in March to 42 mm (1.7 in) over 9 days in April, indicating a dryer and more pleasant month. However, humidity remains relatively high in both months, with April at 83% and March at 87%. For a more detailed look at what to expect in March, you can check Ulm weather in March.

April and May showcase a notable shift in weather patterns. In April, temperatures range from a chilly minimum of -6°C (21°F) to a pleasant maximum of 26°C (79°F), with an average of 9°C (48°F). The month experiences 9 days of precipitation, accumulating 42 mm (1.7 in) of rain, alongside a relatively high humidity level of 83%. In contrast, May brings milder conditions, with temperatures ranging from -2°C (29°F) to a warmer maximum of 29°C (85°F) and an average of 12°C (54°F). However, May is also wetter, recording 106 mm (4.2 in) of precipitation over 16 days, accompanied by a slight decrease in humidity to 79%. For more detailed insights into the weather, check Ulm weather in May.

April and June exhibit notable differences in weather patterns. In April, temperatures range from a chilly minimum of -6°C (21°F) to a pleasant maximum of 26°C (79°F), with an average of 9°C (48°F). The month sees around 42 mm (1.7 in) of precipitation spread over 9 days, and humidity levels are relatively high at 83%. In contrast, June experiences milder temperatures, with minimums of 5°C (41°F) and maximums soaring to 33°C (92°F), averaging 17°C (64°F). However, it also brings more rain, with a total of 124 mm (4.9 in) over 14 days, while humidity remains slightly lower at 82%. Overall, June offers a warmer but wetter experience compared to the cooler and drier April. For more detailed insights, check out Ulm weather in June.

April and July present contrasting weather patterns. In April, temperatures range from a chilly minimum of -6°C (21°F) to a pleasant average of 9°C (48°F), with a maximum reaching 26°C (79°F). However, the month experiences moderate precipitation of 42 mm (1.7 in) over 9 days, coupled with high humidity at 83%. In contrast, July offers much warmer conditions, with temperatures starting at a minimum of 6°C (44°F) and averaging 18°C (65°F), peaking at a scorching 34°C (94°F). This month sees increased rainfall, totaling 89 mm (3.5 in) over 13 days, while maintaining the same humidity level of 83%. For more details, you can view Ulm weather in July.

April and August present contrasting weather patterns, showcasing the shift from the chill of spring to the warmth of summer. In April, temperatures range from a brisk minimum of -6°C (21°F) to a mild average of 9°C (48°F), peaking at a comfortable 26°C (79°F). This month tends to be relatively wet, with 42 mm (1.7 in) of precipitation occurring over about 9 days, alongside a high humidity level of 83%.

In contrast, August enjoys a significantly warmer climate, with minimum temperatures starting at 6°C (44°F) and an average of 18°C (65°F), reaching highs as elevated as 32°C (90°F). The month is also wetter than April, experiencing 107 mm (4.2 in) of rainfall across approximately 14 days, while the humidity remains similar at 84%. For more detailed insights, you can visit Ulm weather in August.

April and September present contrasting yet mild weather conditions. In April, temperatures range from a chilly minimum of -6°C (21°F) to a pleasant maximum of 26°C (79°F), with an average temperature of 9°C (48°F). The month sees about 42 mm (1.7 in) of precipitation over approximately 9 days, along with a humidity level of 83%. In comparison, September offers warmer temperatures, with a minimum of 1°C (35°F) and a maximum of 28°C (83°F), averaging around 14°C (58°F). However, it experiences slightly higher precipitation at 64 mm (2.5 in) over 12 days, and humidity remains high at 85%. For more details on September weather, check out Ulm weather in September.

April and October present a striking contrast in weather patterns. In April, temperatures range from a chilly minimum of -6°C (21°F) to a pleasant maximum of 26°C (79°F), with an average of 9°C (48°F). The month is relatively dry, with 42 mm (1.7 in) of precipitation over about 9 days and humidity levels at 83%. In contrast, October features slightly cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 23°C (74°F), yielding an average of 10°C (50°F). Precipitation increases to 67 mm (2.6 in) over 12 days, coupled with higher humidity at 88%. For a more detailed look at what to expect, you can check out Ulm weather in October.

April and November present contrasting but similarly cool weather patterns. In April, temperatures typically range from a chilly minimum of -6°C (21°F) to a pleasant maximum of 26°C (79°F), with an average of 9°C (48°F). Rainfall during this month amounts to 42 mm (1.7 inches) over approximately 9 days, and the humidity stands at 83%. In comparison, November features slightly milder temperatures, with a minimum of -4°C (25°F) and a maximum of 19°C (66°F), resulting in an average of 4°C (39°F). Precipitation increases to 50 mm (2.0 inches) over 10 days, accompanied by higher humidity at 89%. For more detailed weather insights, refer to Ulm weather in November.

In April, temperatures begin to warm up, ranging from a chilly minimum of -6°C (21°F) to a pleasant maximum of 26°C (79°F), with an average of 9°C (48°F). The month enjoys relatively low precipitation at 42 mm (1.7 in) over about 9 days, accompanied by a humidity level of 83%. In contrast, December is much colder, with minimum temperatures dropping to -9°C (16°F) and averaging only 2°C (35°F), peaking at 13°C (56°F). December is also significantly wetter, with 98 mm (3.9 in) of rainfall spread over 17 days and slightly higher humidity at 91%. For more detailed information about winter weather, you can check Ulm weather in December.

Compare Ulm's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Ulm

April in Ulm brings a delightful transition from the chill of winter to the promise of spring. With temperatures ranging from a brisk 9°C to a pleasant 26°C, the month showcases significant fluctuations, making it uniquely vibrant compared to the more stable temperatures of summer and winter. While April does see its share of precipitation, with about 42 mm spread across nine rain-soaked days, the increased humidity at 83% adds a refreshing touch to the air. This variability offers a charming backdrop for the blooming landscapes and lively outdoor activities, highlighting why understanding weather patterns, such as those detailed on Ulm Climate, can enhance your experience of this enchanting city.