Last updated: August 27, 2025
In April, Solothurn, Switzerland experiences a delightful transition into spring, with temperatures ranging from a crisp -4°C (24°F) at night to a pleasant 25°C (78°F) during the day. The month boasts an average temperature of 9°C (49°F), providing a refreshing climate for outdoor activities. However, visitors should be prepared for moderate precipitation, totaling 69 mm (2.7 in) over approximately 12 days, contributing to the region's lush landscapes. With humidity levels hovering around 84%, the air feels both fresh and invigorating, making April a unique time to explore the natural beauty of this charming Swiss town.
In April, Solothurn begins to shake off the chill of winter, with temperatures showing a noticeable upward trend. The month typically sees a minimum of -4°C (24°F), a significant rise from the earlier months, while average temperatures hover around 9°C (49°F). Nestled between the lingering cold and the warmth to come, the maximum can reach a delightful 25°C (78°F), hinting at the vibrant spring days ahead. As nature awakens, residents and visitors alike start to relish the milder climate, making April a captivating time to experience the blossoming beauty of Switzerland's landscapes.
In April, Solothurn experiences a noticeable decrease in precipitation, recording 69 mm (2.7 in) of rain over 12 days. This marks a drop from the wetter months of January and March, both of which saw 97 mm (3.8 in), highlighting a trend toward drier conditions as spring takes hold. With May set to follow with a significant increase to 149 mm (5.9 in) and 18 rainy days, the transition to late spring promises a return of more frequent showers. Overall, while April remains relatively mild in terms of rainfall, it serves as a bridge between the wetter winter months and the lush, rain-soaked days of early summer in Solothurn.
In April, the humidity in Solothurn, Switzerland, begins to show a noticeable decline, averaging 84%, down from 87% in March. This decrease signals the gradual transition into drier spring months, with May expected to bring even lower levels at 80%. As the year progresses, humidity continues to ebb, reaching its lowest point in August at 77%. However, the trend reverses as autumn sets in; humidity levels rise again, peaking at 91% by December. This fluctuation underscores a distinct seasonal pattern in Solothurn, where crisp spring air gives way to the dampness of winter, creating a dynamic and refreshing climate.
As spring unfolds in Solothurn, Switzerland, the UV Index sharply rises in April, reaching 6, which places it in the high exposure category. This indicates a notable shift from the previous months, where UV levels were notably lower. With a recommended burn time of just 25 minutes, it's essential for residents and visitors alike to take precautions against harmful UV radiation. This upward trend is set to continue, as the UV Index peaks in May and June, highlighting the importance of sun safety in the warmer months ahead. For those looking to plan their outdoor activities wisely, staying informed is key. For more details, visit Solothurn UV Index.
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In April, Solothurn truly shines, boasting an impressive 357 hours of sunshine that heralds the arrival of spring. This beautiful month marks a significant leap from the dreary winter months, where January only offered 161 hours. The gradual increase in sunlight throughout winter and into spring showcases the town's transformation, as February and March saw 226 and 298 hours respectively. April not only represents a 35% surge from March but also sets the stage for an even sunnier May, where the hours increase to 370. This trend of increasing sunshine continues into the summer, peaking in July with 417 hours, making Solothurn a vibrant haven for sunshine seekers.
As we transition into April in Solothurn, Switzerland, the likelihood of sunny weather begins to rise, reaching 49%—a significant increase from the earlier months of the year. January and February lingered at relatively low chances of sunshine, at 15% and 36% respectively, while March marked a promising leap to 45%. This upward trend peaks in April, suggesting that spring is finally embracing Solothurn with more frequent sunny days. However, as we move towards May and the summer months, the chance of sun dips again to 32%, indicating that while April heralds a more cheerful weather pattern, it's still a transient delight before the fluctuating patterns of spring and summer set in.
April heralds a significant shift in daylight hours for Solothurn, Switzerland, as the city enjoys 13 hours of sunshine. This increase marks a delightful transition from the 11 hours in March, emphasizing the arrival of spring and the extended warmth of the season. As daylight lengthens, the contrast with the winter months becomes evident, where January and December provided a mere 8 hours of light. Following April, the days continue to grow longer, peaking in May and June with 15 hours of daylight, offering a vibrant atmosphere perfect for outdoor activities. This gradual elongation of daylight not only boosts spirits but also invites both residents and visitors to revel in the beauty of nature awakened from its winter slumber.
As April sweeps into Solothurn, the wind maintains a steady presence with an average speed of 2.3 m/s (5 mph). This gentle breeze mirrors the transitional nature of spring, bridging the calm of winter and the invigorating gusts of summer. Notably, April's winds remain consistent with March, hinting at a seasonal stability before they begin to pick up in May, where speeds increase to 2.7 m/s (6 mph). The mild airflow enhances the charm of the blossoming landscape, making April an ideal time for outdoor exploration. As the year progresses, the winds typically decline through the summer months, creating a serene atmosphere that invites relaxation and reflection.
Weather in Solothurn varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Solothurn, focusing on differences in temperature, rainfall, humidity, and UV levels.
April weather generally feels milder compared to January, with average temperatures rising from a chilly 1°C (33°F) in January to a more comfortable 9°C (49°F) in April. While January can experience minimum temperatures as low as -13°C (9°F), April sees its coldest nights around -4°C (24°F). Additionally, April tends to be slightly drier, with 69 mm (2.7 in) of precipitation over approximately 12 days compared to January's 97 mm (3.8 in) across 13 days. Humidity levels are also lower in April at 84% versus January's 91%. For a more detailed insight into January conditions, visit Solothurn weather in January.
April and February present contrasting weather patterns, marked by differences in temperature, precipitation, and humidity. February experiences colder temperatures with a minimum of -11°C (13°F) and an average of 3°C (38°F), whereas April's temperatures range more broadly, with a minimum of -4°C (24°F) and an average of 9°C (49°F). In terms of precipitation, February sees slightly more rainfall at 80 mm (3.1 in) compared to April's 69 mm (2.7 in), both distributed over 12 days. Additionally, February has higher humidity at 89%, compared to April's 84%. For a deeper look into February's weather specifics, visit Solothurn weather in February.
In comparing the weather between March and April, we see a general warming trend as spring progresses. April boasts a higher average temperature of 9°C (49°F), compared to March's average of 6°C (42°F), with maximum temperatures in April reaching up to 25°C (78°F), significantly warmer than March's maximum of 21°C (69°F). Interestingly, despite April's warmer climate, it experiences slightly less precipitation at 69 mm (2.7 in) over 12 days, while March has 97 mm (3.8 in) spread over 16 days. Additionally, humidity remains high in both months, but is slightly lower in April at 84% compared to March's 87%. For a more detailed look at March weather, you can check out Solothurn weather in March.
April and May exhibit notable differences in weather patterns. April features a minimum temperature of -4°C (24°F) and an average of 9°C (49°F), with maximums reaching 25°C (78°F). It experiences 69 mm (2.7 in) of precipitation over 12 days and a relatively high humidity of 84%. In contrast, May sees a milder minimum temperature of -1°C (31°F) and a notable increase in average temperature to 13°C (55°F), with maximums climbing to 29°C (85°F). However, precipitation increases significantly to 149 mm (5.9 in) over 18 days, accompanied by slightly lower humidity at 80%. For a more detailed look into May's weather, check out Solothurn weather in May.
April and June present distinct weather characteristics, highlighting the transition from early spring to early summer. In April, temperatures range from a chilly minimum of -4°C (24°F) to a mild maximum of 25°C (78°F), with an average of 9°C (49°F). The month experiences considerable precipitation, totaling 69 mm (2.7 in) over 12 days, accompanied by relatively high humidity at 84%. In contrast, June sees a significant rise in temperature, with a minimum of 5°C (41°F), an average of 18°C (65°F), and a peak of 34°C (93°F). However, it is also wetter, with precipitation reaching 134 mm (5.3 in) over 17 days, yet humidity remains slightly lower at 82%. For more detailed weather insights, check Solothurn weather in June.
April and July present quite different weather patterns. In April, temperatures range from a chilly minimum of -4°C (24°F) to a comfortable average of 9°C (49°F), with the maximum reaching 25°C (78°F). The month experiences about 69 mm (2.7 in) of precipitation across 12 days, and humidity is relatively high at 84%. Conversely, July showcases warmer conditions, with temperatures ranging from a minimum of 8°C (47°F) to an average of 19°C (67°F), peaking at a scorching 35°C (95°F). The summer month also sees increased rainfall, totaling 140 mm (5.5 in) over 15 days, while humidity slightly decreases to 82%. For more detailed climate information, you can refer to Solothurn weather in July.
April and August present markedly different weather conditions. In April, temperatures range from a chilly minimum of -4°C (24°F) to a pleasant maximum of 25°C (78°F), with an average of 9°C (49°F). The month experiences about 69 mm (2.7 in) of precipitation over approximately 12 days, accompanied by a high humidity of 84%. In contrast, August sees warmer temperatures, with minimums of 6°C (44°F) and maximums reaching up to 33°C (91°F), resulting in an average of 19°C (66°F). The month is wetter, with 145 mm (5.7 in) of rain over 17 days, but the humidity is slightly lower at 77%. To explore more about this month in detail, visit Solothurn weather in August.
April and September both showcase a range of temperatures, but they differ significantly in their overall climate profiles. In April, the average temperature is around 9°C (49°F), with a notable minimum of -4°C (24°F) and a maximum of 25°C (78°F). The month tends to be quite humid, with an 84% humidity level and 69 mm (2.7 in) of precipitation spread across 12 days. In contrast, September offers warmer temperatures, averaging 15°C (59°F), with a minimum of 2°C (35°F) and a maximum of 29°C (84°F). While it has slightly more precipitation at 77 mm (3.0 in), the humidity is a bit lower at 81%. Both months experience rainfall on approximately 12 days, highlighting a relatively consistent pattern in precipitation. For a more detailed look at September weather, check out Solothurn weather in September.
April and October present a transition in weather patterns, showcasing differing characteristics as seasons change. In April, temperatures range from a minimum of -4°C (24°F) to a maximum of 25°C (78°F), with an average of 9°C (49°F) and relatively lower precipitation at 69 mm (2.7 in) over 12 days. In contrast, October sees slightly cooler temperatures, ranging from -2°C (28°F) to 23°C (73°F), with an average of 10°C (50°F), and increased precipitation of 102 mm (4.0 in) spread across 14 days. Furthermore, the humidity is a touch higher in October at 89%, compared to April's 84%. To explore more about October weather in Solothurn, you can check this link: Solothurn weather in October.
April and November exhibit distinct weather patterns, highlighting the transition from spring to late autumn. In April, temperatures range from a minimum of -4°C (24°F) to a pleasant maximum of 25°C (78°F), with an average of 9°C (49°F). The month experiences about 69 mm (2.7 in) of precipitation over approximately 12 days, accompanied by relatively high humidity at 84%. In contrast, November sees cooler temperatures, with a minimum of -5°C (24°F) and a maximum of 20°C (68°F), averaging just 4°C (40°F). Precipitation increases slightly to 79 mm (3.1 in) across 13 days, and humidity rises to 89%. This juxtaposition underscores the milder, sometimes warmer conditions of April compared to the chillier and more humid atmosphere of November. For more details, you can check Solothurn weather in November.
April and December present contrasting weather conditions. In April, temperatures range from a chilly minimum of -4°C (24°F) to a pleasant maximum of 25°C (78°F), with an average of 9°C (49°F). The month sees around 69 mm (2.7 in) of precipitation over approximately 12 days, all while maintaining a humidity level of 84%. In contrast, December is considerably colder, with temperatures dipping to a minimum of -7°C (20°F) and peaking at a maximum of 13°C (57°F), culminating in an average of just 2°C (36°F). Additionally, December experiences more precipitation, totaling 130 mm (5.1 in) over 19 days, and a higher humidity of 91%. For more details on December weather conditions, you can visit Solothurn weather in December.
April in Solothurn showcases a refreshing transition from the chill of winter to the budding warmth of spring. With temperatures ranging from crisp mornings to pleasantly mild afternoons, this month sets a dynamic stage for outdoor activities. While there's a fair share of precipitation, with about 12 rainy days contributing to the overall moisture, the high humidity of 84% adds to the invigorating atmosphere. Unlike the extremes found in summer or the biting cold of winter, April offers a unique blend of rejuvenation, making it a delightful time to experience the lush landscapes of Solothurn. For a more detailed understanding of seasonal changes, explore Solothurn Climate.