Last updated: August 27, 2025
In May, Riehen, Switzerland, experiences a diverse range of weather conditions, with maximum temperatures reaching 31°C (87°F) and an average of 14°C (57°F), while the minimum can dip to 1°C (33°F). This month also brings significant precipitation, totaling 126 mm (5.0 in) over 17 days, contributing to a humidity level of approximately 80%. The varied climate offers a unique blend of warmth and moisture, making May an interesting time to explore the natural beauty of the region.
May in Riehen, Switzerland marks a noticeable transition as winter gives way to warmer days. With temperatures ranging from a minimum of 1°C (33°F) to a sizzling maximum of 31°C (87°F), this month often delights residents and visitors alike with pleasant spring weather. The average temperature reaching 14°C (57°F) signifies a welcoming embrace of the season, paving the way for outdoor activities and blossoming landscapes. As daylight stretches and warmth prevails, May sets the stage for a vibrant summer, showcasing the beauty of Riehen in full bloom. The upward trend in temperatures from the chill of early months signals the awakening of nature, inviting all to enjoy the increasingly comfortable climate.
May in Riehen, Switzerland, brings a noticeable increase in precipitation, with 126 mm (5.0 in) of rain falling over the month, making it the wettest time of the spring season. This uptick is reflected in the 17 days of precipitation, a leap from April's 10 days. The abundant rainfall not only nourishes the blooming landscape but also signals a transition into a wetter period, as June follows closely with 120 mm (4.7 in). This trend highlights May as a pivotal month, setting the stage for lush greenery, as vibrant flowers and thriving vegetation come alive under the nourishing showers.
In Riehen, Switzerland, the month of May heralds a notable shift in humidity, dipping to 80%—the lowest level since the beginning of the year. This decline follows a steady transition from the highest levels of 92% in January. As spring unfolds, humidity decreases progressively, reflecting the warming trend of the season. While June sees a slight uptick to 82%, the overall pattern demonstrates a gradual easing of moisture in the air as summer approaches. The comfortable humidity in May not only makes outdoor activities more enjoyable but also sets the stage for the lush, verdant landscape that characterizes the warmer months ahead.
As May arrives in Riehen, Switzerland, the UV Index surges to 8, categorizing it as very high and significantly increasing the risk of sunburn. With a burn time of just 15 minutes, it's essential to be mindful of sun exposure during this month. This trend marks a noticeable leap from the moderate conditions of earlier months, such as April's UV Index of 6, and it foreshadows an even higher peak in the summer months ahead. Residents and visitors are encouraged to take protective measures to shield their skin as the days grow brighter and warmer. For detailed information on UV levels throughout the year, visit Riehen UV Index.
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May brings a delightful surge of sunshine to Riehen, Switzerland, with 361 hours of radiant daylight, marking the peak of a steady climb since the winter months. Following the gradual increase from January's 136 hours, each subsequent month reveals a blossoming pattern, with April's 353 hours hinting at the vibrant summer ahead. As Riehen transitions into May, the days grow longer and brighter, enhancing the beauty of the landscape and inviting residents and visitors alike to embrace outdoor activities. The momentum continues into June, where sunshine reaches a glorious 389 hours, setting the stage for sun-soaked adventures in the heart of spring. This trend not only uplifts spirits but also showcases the enchanting transformation of Riehen, drawing the community closer to nature’s warmth and brilliance.
As spring transitions into summer, Riehen, Switzerland, experiences a notable shift in weather patterns. Although May boasts a 33% chance of sunny weather, it marks a dip from the preceding months, with April enjoying a 51% likelihood of sunshine. This decline signals that while the days are getting longer, the unpredictability of spring rains still lingers. Interestingly, May's sunshine ratio aligns closely with those of June and July, suggesting a trend of fluctuating sunny days as the year progresses. As the region gears up for summertime, residents and visitors alike can remain hopeful for sunny moments amid the charming backdrop of blooming landscapes.
As spring unfolds in Riehen, Switzerland, daylight duration begins a captivating ascent, especially notable in May when the sun graces the landscape for 15 hours. This month marks the peak of increasing daylight that started from a modest 8 hours in January. Following April's generous 13 hours, May serves as a vibrant threshold into the summer months, ensuring long, bright days that contribute to the region's natural beauty and outdoor activities. By June and through July, daylight remains steady at 15 hours, creating an inviting atmosphere for locals and visitors alike. However, as summer wanes, daylight gradually retreats, easing from 14 hours in August to 12 hours in September, before continuing its descent into the shorter days of autumn and winter. This rhythmic ebb and flow of daylight not only defines the seasonal experience in Riehen but also underscores the profound connection between nature and daily life in this picturesque Swiss locale.
In May, Riehen, Switzerland experiences a gentle rise in average wind speed, clocking in at 2.7 m/s (6 mph). This uptick follows the steadiness of the preceding months, where wind speeds hovered around 2.3 m/s (5 mph) from January through April. As spring fully blossoms, the invigorating breeze of May not only brings a refreshing change but also hints at the seasonal transition ahead. This slight increase in wind speed signifies a shift toward warmth and vitality, contrasting with the calmer, cooler air of the early spring months. Interestingly, just as summer approaches, the wind begins to soften again in June, dipping to 1.7 m/s (4 mph), reflecting the region's characteristic, gentle climatic rhythms.
Weather in Riehen varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Riehen, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January showcase strikingly different weather patterns. In May, temperatures range from a chilly 1°C (33°F) at night to a warm 31°C (87°F) during the day, with an average temperature of 14°C (57°F). The month experiences 126 mm (5.0 in) of precipitation over 17 days, accompanied by a relatively high humidity of 80%. In contrast, January features much colder conditions, with nighttime temperatures plunging to -13°C (8°F) and daytime highs averaging only 1°C (35°F). The month sees 89 mm (3.5 in) of precipitation across 12 days, and humidity levels are slightly higher at 92%. For more specifics on January's conditions, you can check Riehen weather in January.
When comparing the weather between February and May, it's clear that May offers significantly milder temperatures. In February, temperatures can drop as low as -13°C (9°F) and average around 4°C (39°F), whereas May experiences a more comfortable average of 14°C (57°F), peaking at 31°C (87°F). Precipitation in May is higher, with 126 mm (5.0 in) falling over 17 days, compared to February's 75 mm (2.9 in) over 12 days. Additionally, while February has a humidity level of 89%, May's humidity sits at a slightly lower 80%, contributing to the overall feel of warmth. For more detailed insights on February weather, you can refer to Riehen weather in February.
In comparing the weather between May and March, it is evident that May enjoys significantly warmer temperatures, with average highs reaching 14°C (57°F) compared to March's more modest average of 6°C (44°F). While March sees minimum temperatures dipping to -12°C (10°F), May only experiences a chilly minimum of 1°C (33°F). Precipitation is more abundant in May, with 126 mm (5.0 in) spread over 17 days, compared to March's 87 mm (3.4 in) over 14 days. Interestingly, both months have high humidity levels, with March slightly higher at 87%. For more insights into March weather, visit Riehen weather in March.
In comparing the weather of May and April, it's evident that May tends to be warmer and wetter. May experiences a broader temperature range, with minimums of 1°C (33°F) and maximums reaching up to 31°C (87°F), averaging around 14°C (57°F). In contrast, April's temperatures are cooler, with a minimum of -4°C (26°F) and a maximum of 26°C (80°F), averaging only 10°C (50°F). Additionally, May receives more precipitation, totaling 126 mm (5.0 in) over 17 days, while April sees only 59 mm (2.3 in) over 10 days. Humidity levels are relatively similar, with May at 80% and April slightly higher at 84%. For a detailed look at April's weather, you can visit Riehen weather in April.
May and June both offer a pleasant divergence in weather as spring transitions to early summer. In May, temperatures range from a cool 1°C (33°F) at night to a warm 31°C (87°F) in the day, averaging around 14°C (57°F). However, it also brings higher precipitation, with about 126 mm (5.0 in) falling over 17 days, and humidity levels hovering around 80%.
In contrast, June sees a more consistent warmth, with minimum temperatures rising to 6°C (43°F) and maximums reaching 34°C (94°F), leading to an average of 19°C (66°F). Rainfall is slightly less at 120 mm (4.7 in) across 16 days, and humidity edges up to 82%. For a detailed overview of the weather during this month, you can check Riehen weather in June.
May and July showcase distinct weather patterns, reflecting the transition from spring to summer. In May, temperatures range from a cool 1°C (33°F) at night to a warm 31°C (87°F) during the day, with an average of 14°C (57°F). The month experiences significant rainfall, totaling 126 mm (5.0 in) over 17 days, coupled with a humidity level of 80%. In contrast, July brings milder nights with temperatures starting at a minimum of 9°C (49°F) and peaking at a maximum of 36°C (98°F), averaging around 20°C (69°F). Rainfall is slightly less, at 122 mm (4.8 in) over 15 days, and humidity rises slightly to 83%. For a deeper understanding of July weather, you can visit Riehen weather in July.
May and August present distinct weather characteristics. In May, temperatures range from a chilly 1°C (33°F) at night to a warm 31°C (87°F) during the day, with an average of 14°C (57°F). The month typically experiences around 126 mm (5.0 in) of precipitation over 17 days, accompanied by high humidity at 80%. In contrast, August boasts milder temperatures, with minimums of 7°C (44°F) and maximums reaching 34°C (94°F), and an average of 20°C (68°F). Precipitation slightly decreases to 115 mm (4.5 in) over 15 days, while humidity remains constant at 80%. For more details, check out Riehen weather in August.
May and September present distinct weather patterns. In May, temperatures range from a minimum of 1°C (33°F) to a maximum of 31°C (87°F), with an average of 14°C (57°F). The month is characterized by relatively high precipitation, totaling 126 mm (5.0 in) over approximately 17 days, coupled with a humidity level of 80%. In contrast, September offers a slightly warmer climate, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 30°C (86°F), averaging 16°C (61°F). Precipitation in September is significantly lower at 69 mm (2.7 in) across 12 days, and humidity rises slightly to 83%. For more detailed insights on the weather in September, you can visit Riehen weather in September.
May typically experiences milder temperatures, with averages around 14°C (57°F) and highs reaching up to 31°C (87°F). In contrast, October sees cooler conditions, with average temperatures dropping to about 11°C (52°F) and a maximum of 24°C (75°F). While May is marked by higher humidity at 80% and more precipitation (126 mm over 17 days), October features slightly less rain at 89 mm over 13 days and a higher humidity level of 90%. For a more detailed look at October's climate, you can check out Riehen weather in October.
May and November present quite distinct weather patterns. In May, temperatures range from a minimum of 1°C (33°F) to a pleasant average of 14°C (57°F), reaching a maximum of 31°C (87°F) on warmer days. The month is characterized by significant precipitation, with 126 mm (5.0 in) of rain over approximately 17 days, and humidity levels around 80%. In contrast, November experiences cooler temperatures, with a minimum of -4°C (25°F), an average of 5°C (42°F), and a maximum of 21°C (70°F). While it receives less rainfall, totaling 73 mm (2.9 in) over about 12 days, the humidity increases slightly to 88%. For detailed weather insights, you can explore Riehen weather in November.
May and December showcase contrasting climates, with May featuring a broader temperature range from a chilly 1°C (33°F) to a warm 31°C (87°F) and an average of 14°C (57°F). In comparison, December exhibits colder temperatures, with a minimum of -5°C (24°F) and a maximum of 14°C (58°F), averaging only 3°C (38°F). Both months experience similar levels of precipitation, with May receiving 126 mm (5.0 in) over 17 days and December slightly less at 124 mm (4.9 in) over 18 days. Notably, December is characterized by higher humidity at 90%, compared to May's 80%. For more detailed insights into December weather, you can visit Riehen weather in December.
May in Riehen stands out with its vibrant temperatures and heightened humidity, signaling a transition into the warmth of summer. While the month can reach impressive highs of 31°C, it also retains a cooler average that contrasts sharply with the peaks of summer. Frequent precipitation, with rain falling on nearly half the days, adds a refreshing touch to the blossoming landscape, making May significantly wetter than the drier summer months ahead. The month’s unique blend of warm days and occasional showers creates a dynamic atmosphere perfect for enjoying nature’s revival. For more details on what to expect year-round, visit Riehen Climate.