Last updated: August 27, 2025
May in Grachen, Switzerland unveils a dynamic weather tapestry, with temperatures fluctuating between a maximum of 20°C (67°F) and a minimum of -13°C (9°F), creating a refreshing climate for both locals and visitors. The average temperature rests at a cool 5°C (41°F), ideal for those looking to embrace the spring chill. With 149 mm (5.9 in) of precipitation over 20 days, May is characterized by a significant number of rainy moments, enriching the lush landscapes surrounding the quaint village. High humidity levels averaging around 80% heighten the freshness of the air, making it a perfect backdrop for enjoying outdoor adventures amidst breathtaking alpine scenery.
As spring transitions to summer, Grachen, Switzerland experiences a noticeable warming trend in May. Temperatures begin to rise, with minimums around -13°C (9°F) and averages reaching 5°C (41°F), offering a refreshing change from the chilling winter months. The maximum temperature climbs to a pleasant 20°C (67°F), making it an ideal time for outdoor activities amidst the breathtaking alpine scenery. Compared to the preceding months of April and earlier, May presents a significant leap towards milder weather, attracting visitors eager to explore the lush landscapes as they awaken from their winter slumber. As budding flowers and green hills emerge, Grachen is beautifully poised to showcase its natural charm.
In May, Grachen, Switzerland, experiences a noticeable uptick in precipitation, with 149 mm (5.9 in) of rain falling over an impressive 20 days. This surge in moisture marks the wettest month of spring, transitioning from the previous month’s 89 mm (3.5 in) in April. As the region welcomes warmer temperatures, the frequency and intensity of rainfall underscore a shift towards the peak of the rainy season, setting the stage for lush landscapes and vibrant alpine flora. Notably, May stands out not just for its total rainfall but also for the number of precipitation days, highlighting a potential trend towards wetter conditions as the summer approaches.
May in Grachen, Switzerland, experiences a notable drop in humidity, settling at 80%. This shift marks a transition from the wetter winter months, where humidity hovers around 92% in January and 89% in February, down to more moderate levels as spring unfolds. As temperatures rise, April exhibits a gradual decrease to 84%, hinting at the impending warmth of summer. While June sees a slight uptick back to 82%, the overall trend indicates a more comfortable and balmy atmosphere during May, making it an inviting time for both locals and visitors. Following this month, humidity levels stabilize, remaining in the 80-83% range throughout the summer, before they gradually climb again into the wetter autumn months.
As May arrives in Grachen, Switzerland, the UV Index climbs to a striking 10, signaling a very high exposure category that necessitates caution for sunny adventures. With a burn time reduced to just 15 minutes, it's clear that the increasing strength of the sun demands heightened awareness. Following the trend set by April's UV Index of 8, May marks a significant leap in solar intensity, paving the way for the peak summer months ahead. The progression from moderate levels in winter to the approaching extreme conditions of June illustrates the region's vibrant seasonal dynamics. It's essential to stay informed and prepared to protect your skin during this time. For more insights, check out the detailed Grachen UV Index.
UV Risk Categories
In May, Grachen, Switzerland basks in a delightful 360 hours of sunshine, marking a peak in daylight that sets the stage for summer adventures. As the months progress from the chilly beginning of the year, the trend is clear: sunshine hours steadily increase from January's 176 hours to April's 355. This consistent rise culminates in June, with 388 hours of brilliant sunlight, while July further amplifies the glow with an impressive 416 hours. The rhythm of the seasons offers a stark contrast, as the sun begins to retreat in the subsequent months, but May stands out as a beacon of warmth and light, inviting both locals and travelers to revel in the splendor of the Swiss Alps during one of its sunniest months.
In Grachen, Switzerland, May presents a modest likelihood of sunny weather, with a 30% chance of sunshine grazing the Alps. This figure reflects a slight dip compared to the preceding months, where March and April enjoy higher probabilities of clear skies at 42% and 40%, respectively. As the region transitions towards summer, the sun's frequency decreases into June, highlighting a potential trend where the peak spring months offer more favorable conditions for those seeking outdoor adventures. While May may not shine as brightly as its predecessors, it still promises opportunities to bask in the beauty of the Swiss landscape amidst blossoming scenery.
As spring blooms into summer, May shines brightly in Grachen, Switzerland, with daylight stretching to an invigorating 14 hours. This month marks a delightful peak in the progression of longer days, following April's 13 hours of sunlight and setting the stage for the sun-drenched June, which boasts a maximum of 15 hours. The gradual increase in daylight from January's 9 hours to May's abundant hours reflects nature's awakening, fostering a vibrant atmosphere ideal for outdoor adventures. As the year advances, daylight slowly begins its retreat, but May stands as a golden jewel in the calendar, offering an extended canvas for exploration and enjoyment in this picturesque alpine town.
In May, Grachen experiences a gentle breeze with an average wind speed of 1.2 m/s (3 mph), making it one of the calmer months of the year. This slight increase from April aligns with the gradual transition from winter to spring, as the region shakes off the last remnants of chill. As the months progress, wind speeds tend to dip, particularly during the summer, peaking in the more variable months of early and late winter. Observing this subtle trend, one can appreciate how the delicate May winds contribute to the serene beauty of Grachen, inviting outdoor enthusiasts to enjoy its captivating landscapes without the disturbances of strong gusts.
Weather in Grachen varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Grachen, focusing on differences in temperature, rainfall, humidity, and UV levels.
In May, temperatures begin to warm up significantly, with a minimum of -13°C (9°F) and average temps reaching 5°C (41°F), peaking at a comfortable 20°C (67°F). This month also sees considerable precipitation, totaling 149 mm (5.9 in) over about 20 days, with an average humidity of 80%. In contrast, January experiences much colder conditions, with minimum temperatures plunging to -27°C (-17°F) and an average temperature of -10°C (15°F), only reaching a maximum of 5°C (41°F). Precipitation in January is slightly less at 125 mm (4.9 in), spread over just 11 days, paired with a higher humidity level of 92%. For a closer look at January's climate, you can explore Grachen weather in January.
May and February present stark contrasts in weather conditions. In May, temperatures range from a chilly -13°C (9°F) at their lowest to a pleasant 20°C (67°F) at their peak, averaging around 5°C (41°F). This month also sees significant precipitation with 149 mm (5.9 in) spread over 20 days, accompanied by a humidity level of 80%. In contrast, February experiences much colder temperatures, with a minimum of -24°C (-10°F) and a maximum of only 9°C (48°F), averaging -6°C (22°F). Additionally, February has less precipitation at 82 mm (3.2 in), occurring over 12 days, but features a higher humidity of 89%. For more detailed information about February weather, you can check Grachen weather in February.
When comparing the weather in March and May, it’s clear that May tends to be significantly warmer and more pleasant. In March, temperatures can dip as low as -25°C (-12°F), with an average temperature around -3°C (27°F) and maximums reaching only 12°C (53°F). In contrast, May sees a milder range, with temperatures starting from a minimum of -13°C (9°F) to an average of 5°C (41°F) and peaking at a comfortable 20°C (67°F). Additionally, March experiences slightly lower precipitation at 109 mm (4.3 in) over 15 days compared to May's 149 mm (5.9 in) over 20 days. Humidity levels are also higher in March at 87%, compared to May's 80%. For a more detailed look at March weather, check out Grachen weather in March.
In comparing the weather conditions of May and April, notable differences emerge. May sees a significant rise in average temperatures, with a minimum of -13°C (9°F) and a maximum of 20°C (67°F), compared to April’s cooler range of -17°C (2°F) to 15°C (59°F). The increase in average temperature in May reaches 5°C (41°F), making it a more pleasant month overall. However, May experiences more precipitation, with 149 mm (5.9 in) over 20 days, compared to April's 89 mm (3.5 in) over just 11 days, despite April's slightly higher humidity at 84%. The transition from April to May indicates a shift towards warmer and wetter conditions. For more detailed information on April weather, you can visit Grachen weather in April.
May and June showcase a notable transition in weather patterns. In May, temperatures range from a chilly minimum of -13°C (9°F) to a comfortable maximum of 20°C (67°F), with an average of 5°C (41°F). This month sees considerable precipitation, totaling 149 mm (5.9 in) over 20 days, coupled with high humidity levels averaging around 80%. By contrast, June experiences milder conditions with temperatures ranging from a minimum of -3°C (26°F) to a maximum of 26°C (78°F), and an average temperature of 11°C (51°F). Precipitation slightly decreases to 130 mm (5.1 in) over 17 days, while humidity remains fairly high at 82%. For a more detailed view of June's weather, you can check out this link: Grachen weather in June.
May and July weather patterns showcase a notable shift as the seasons progress. In May, temperatures range from a chilly minimum of -13°C (9°F) to a pleasant maximum of 20°C (67°F), with an average of 5°C (41°F). The month experiences significant precipitation, totaling 149 mm (5.9 in) over approximately 20 days, contributing to a high humidity level of 80%. In contrast, July sees milder conditions with minimum temperatures of 0°C (33°F) and maximums reaching 25°C (76°F), averaging 13°C (55°F). Precipitation decreases to 108 mm (4.2 in) across 16 days, while humidity slightly rises to 83%. For more detailed insights into July's climate, you can check Grachen weather in July.
In May, temperatures see a wider range with a minimum of -13°C (9°F), an average of 5°C (41°F), and a maximum of 20°C (67°F). The month is characterized by considerable precipitation, totaling 149 mm (5.9 in) over 20 days, keeping humidity consistent at 80%. Conversely, August presents milder conditions, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 24°C (76°F) and a more moderate average of 12°C (54°F). Precipitation is slightly lower at 119 mm (4.7 in), occurring over 16 days, while humidity remains steady at 80%. For a closer look at the weather in August, you can check Grachen weather in August.
In May, temperatures range from a minimum of -13°C (9°F) to a maximum of 20°C (67°F), with an average of 5°C (41°F). The month experiences significant precipitation, totaling 149 mm (5.9 in) over approximately 20 days, and maintains a high humidity level at 80%. In contrast, September offers a milder temperature range, with minimums around -6°C (22°F), averages of 8°C (47°F), and highs reaching 21°C (70°F). This month sees reduced precipitation of 89 mm (3.5 in) across about 13 days, while the humidity remains high at 83%. For a closer look at the September weather in the region, check out Grachen weather in September.
May and October exhibit distinct differences in weather, despite their similarities in average temperatures. In May, temperatures range from a low of -13°C (9°F) to a high of 20°C (67°F), with a notably lower average temperature of 5°C (41°F). The month is characterized by significant precipitation of 149 mm (5.9 in) spread over 20 days, and a humidity level of 80% gives it a relatively damp feel.
In contrast, October experiences a slightly milder temperature range, with minimums around -8°C (18°F) and maximums of 16°C (61°F), leading to an average temperature of 4°C (39°F). It has a similar amount of precipitation at 148 mm (5.8 in), but this is spread over just 11 days, indicating less frequent rainfall. Interestingly, October is slightly more humid at 90%, which can contribute to a chillier and more overcast atmosphere. For more insights into October weather, you can visit Grachen weather in October.
In May, the weather brings milder temperatures, ranging from a minimum of -13°C (9°F) to a maximum of 20°C (67°F) with an average of 5°C (41°F). This month typically experiences about 149 mm (5.9 in) of precipitation over 20 days, accompanied by a humidity level of 80%. In contrast, November sees much colder conditions, with temperatures varying from a low of -23°C (-10°F) to a high of 12°C (55°F) and an average temperature of -3°C (27°F). There is also less precipitation in November, totaling 109 mm (4.3 in) across 15 days, though the humidity slightly increases to 88%. For a more detailed look at November conditions, you can check Grachen weather in November.
May and December present strikingly different weather patterns. In May, temperatures range from a chilly minimum of -13°C (9°F) to a pleasant maximum of 20°C (67°F), with an average of 5°C (41°F). This month sees about 149 mm (5.9 in) of precipitation over 20 days and maintains a humidity level of 80%. In contrast, December experiences much harsher conditions, with temperatures dipping as low as -28°C (-18°F) and an average of -8°C (17°F) while peaking at 5°C (42°F). With higher overall precipitation at 170 mm (6.7 in) over just 17 days, the humidity reaches 90%, contributing to the winter chill. For more details on December weather, you can visit Grachen weather in December.
May in Grachen showcases a distinct shift in weather patterns compared to the preceding months. With temperatures beginning to rise and the days growing longer, the average climate is a refreshing change from the chill of winter, allowing visitors to enjoy the beautiful blooming landscapes. However, the month is not without its share of rain, as evidenced by a considerable number of precipitation days, contributing to the lush greenery. The high humidity adds a unique touch to the alpine air, making May a fascinating blend of warmth and moisture. For a more detailed understanding of what to expect this month and throughout the year, be sure to check out Grachen Climate.