Last updated: August 27, 2025
Experience the charm of Arosa, Switzerland in May, where temperatures offer a delightful range, peaking at a mild 21°C (69°F) while dipping to a refreshing -13°C (9°F). The average temperature hovers around a crisp 5°C (41°F), making it an ideal time for outdoor adventures amidst stunning alpine scenery. However, prepare for diverse weather as May sees approximately 161 mm (6.3 in) of precipitation spread over 23 days, accompanied by an invigorating 80% humidity. Whether you're hiking or enjoying the local culture, the beauty of Arosa's springtime awaits!
In Arosa, Switzerland, the month of May marks a delightful transition from the lingering chill of winter to the warmth of early summer. With temperatures ranging from a minimum of -13°C (9°F) to a pleasant maximum of 21°C (69°F), May brings an average of 5°C (41°F), signaling a significant rise from the frosty averages of previous months. This gradual warming trend is evident as the landscape begins to blossom, making it an ideal time for outdoor enthusiasts to explore the picturesque alpine scenery. As the days lengthen and temperatures climb, Arosa transforms into a vibrant destination, inviting visitors to enjoy both the fresh mountain air and the enchanting beauty of spring’s emergence.
May in Arosa, Switzerland heralds a significant uptick in precipitation, with 161 mm (6.3 in) falling over the course of 23 rainy days. This substantial increase marks a noticeable shift from the preceding months; April's rainfall of 87 mm (3.4 in) over 14 days pales in comparison. As spring blossoms into full swing, May's wet weather not only contributes to the vibrant greenery but also sets the stage for the more intense summer showers that follow in June. The trend highlights May as the pivotal month where Arosa transitions into a wetter spell, making its alpine landscapes even more enchanting to residents and visitors alike.
As spring unfolds in Arosa, Switzerland, May brings a noticeable shift in humidity levels, dipping to 80%. This reduction marks a gradual decline from the winter months, where humidity levels peak at an impressive 92% in January. Throughout the preceding months, humidity steadily drops, culminating in a fresher ambiance by May. This slight decrease continues into June, where humidity rises marginally to 82%, before settling into a comfortable rhythm during the summer months. Overall, May serves as a transitional period, bridging the moist chill of winter with the warmth of summer, making it an ideal time to enjoy Arosa’s stunning natural beauty.
As we transition into May in Arosa, Switzerland, the UV Index reaches a striking 9, signifying a very high exposure category that demands attention. This sharp increase follows the pattern established in previous months, where the UV Index rapidly escalated from moderate levels in February to high in March, and further to very high in April. With a burn time of just 15 minutes, it's crucial for outdoor enthusiasts to protect themselves from the sun's intense rays this month. As the weather warms and activities in nature beckon, being mindful of UV exposure is more important than ever. For a detailed look at how UV levels fluctuate throughout the year, explore this valuable resource: Arosa UV Index.
UV Risk Categories
As spring unfolds in Arosa, Switzerland, May shines particularly bright, boasting 361 hours of glorious sunshine. This warm month marks a pivotal moment in the year, where daylight hours surge significantly from the earlier months, showcasing an impressive increase from 348 hours in April. Following May, June continues this upward trend with 386 hours, hinting at the delightful summer ahead. Overall, the sunshine in Arosa blossoms progressively through the spring months, captivating residents and visitors alike with the promise of longer, sun-kissed days that encourage outdoor adventures amid the stunning Alpine backdrop.
In Arosa, Switzerland, the likelihood of encountering sunny weather sees a modest decrease in May, with a chance of 31%. This statistic is a slight dip from the higher probabilities observed in the earlier months of January and February, where sunshine chances are significantly brighter at 21% and 43% respectively. As spring progresses, March and April offer better prospects, hanging around 41% and 37% before the slight pullback in May. Nonetheless, Arosa's weather remains generally inviting as the region transitions into summer, with June and July showing comparable chances of sun at 34% and 31%. Overall, Arosa exhibits a dynamic weather pattern, but those planning a May visit might want to prepare for a mix of sun and clouds while enjoying the beautiful alpine surroundings.
As the seasons shift in Arosa, Switzerland, daylight duration transforms dramatically, offering an inviting glimpse of nature's awakening. January starts off with a modest 9 hours of daylight, gradually lengthening to 10 hours in February and 11 hours by March. The warmth of spring sets in by April, as daylight stretches to 13 hours, paving the way for May's peak brightness at 15 hours. This trend of extended sunlight continues into June, July, and even August, where days are equally long at 15 hours. However, as autumn approaches, a gradual decline begins, with daylight slipping to 12 hours in September and further down to 10 hours in October. By November, Arosa experiences 9 hours, and the year wraps up with a tranquil 8 hours in December. This evolving pattern highlights the rhythmic beauty of daylight in Arosa, reflecting the changing seasons and the inviting allure of longer days as spring reaches its zenith.
In Arosa, Switzerland, May ushers in a gentle increase in wind speed, averaging 1.6 m/s (4 mph), mirroring the trends of the preceding months. After a brief dip in April, the wind picks up slightly, heralding the arrival of warmer weather. This subtle uptick signifies a shift in seasons, as the landscape awakens and outdoor activities beckon. Interestingly, this month stands out as one of the windiest before the summer lull, hinting at the refreshing breezes that will soon accompany long, sun-filled days. Overall, May's mild winds contribute to the serene charm of Arosa, perfectly complementing its stunning alpine scenery.
Weather in Arosa varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Arosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, May experiences significantly milder temperatures, with an average of 5°C (41°F) compared to January's colder -9°C (16°F). While January offers a maximum of just 5°C (40°F), May reaches highs of 21°C (69°F), making it a more pleasant time of year. Precipitation is also higher in May, totaling 161 mm (6.3 in) over 23 days, whereas January sees only 92 mm (3.6 in) across 11 days. Additionally, May has a lower humidity level of 80% compared to January's brisk 92%, contributing to a more comfortable atmosphere in late spring. For more specific details, you can check the Arosa weather in January.
May and February present contrasting weather conditions. In May, temperatures fluctuate from a chilly -13°C (9°F) at night to a pleasant high of 21°C (69°F) during the day, with an average of 5°C (41°F). The month also experiences significant precipitation, totaling 161 mm (6.3 in) over 23 days, contributing to a humidity level of 80%. In contrast, February is much colder, with temperatures ranging from a frigid -26°C (-14°F) at night to a maximum of 9°C (48°F), averaging -6°C (22°F). Precipitation is notably less, at 65 mm (2.6 in) across just 12 days, though the humidity is slightly higher at 89%. For further details on February weather, you can check Arosa weather in February.
In comparing the weather between March and May, it's clear that May experiences significantly milder temperatures, with averages around 5°C (41°F), while March sees much colder conditions, with averages plummeting to -3°C (27°F). The maximum temperature in May can reach a pleasant 21°C (69°F), in stark contrast to March’s maximum of 11°C (52°F). Additionally, May brings more precipitation at 161 mm (6.3 in) over 23 days, compared to March's 92 mm (3.6 in) spread across 16 days. Humidity remains fairly high in both months, though slightly lower in May at 80% compared to March's 87%. For more detailed information about the weather in March, you can visit Arosa weather in March.
In comparing the weather between April and May, it is clear that May offers a more moderate climate. While April experiences colder temperatures with a minimum of -24°C (-11°F) and an average of just 1°C (34°F), May sees a significant rise with minimums of -13°C (9°F) and an average temperature of 5°C (41°F). Additionally, May brings warmer maximum temperatures, reaching up to 21°C (69°F) compared to April's high of 15°C (59°F). Precipitation also increases in May, with 161 mm (6.3 in) over 23 days, whereas April has only 87 mm (3.4 in) of rain over 14 days. Despite the higher precipitation in May, humidity remains similar, with April at 84% and May at 80%. For more detailed information about the weather in April, you can check Arosa weather in April.
In comparing the weather of May and June, we see a transition from cooler temperatures to milder conditions. May experiences a wider temperature range, with a minimum of -13°C (9°F) and an average of 5°C (41°F), peaking at 21°C (69°F). In contrast, June sees a milder minimum of -2°C (28°F), an average of 10°C (51°F), and a maximum of 26°C (79°F). Precipitation is slightly lower in June at 147 mm (5.8 in) over 19 days, compared to May's 161 mm (6.3 in) across 23 days. Interestingly, humidity remains relatively high in both months, with May at 80% and June slightly higher at 82%. For more detailed insights, you can check the Arosa weather in June.
In May, temperatures in Arosa vary from a chilly minimum of -13°C (9°F) to a comfortable maximum of 21°C (69°F), with an average of 5°C (41°F). The month experiences significant precipitation, totaling 161 mm (6.3 in) over 23 days, accompanied by high humidity levels at 80%. In contrast, July offers a warmer climate, with temperatures ranging from a minimum of 2°C (36°F) to a pleasant maximum of 25°C (78°F) and an average of 11°C (53°F). Although July sees slightly less rainfall at 152 mm (6.0 in) over 20 days, the humidity rises to 83%. For more details about July weather in Arosa, check out Arosa weather in July.
In May, temperatures in Arosa range from a chilly -13°C (9°F) at night to a pleasant 21°C (69°F) during the day, averaging around 5°C (41°F). This month experiences significant precipitation, with 161 mm (6.3 in) falling over 23 days, all while maintaining a high humidity level of 80%. In contrast, August sees a broader temperature range with minimums at 0°C (31°F) and maximums reaching 23°C (74°F), leading to an average of 11°C (52°F). Although August has a slightly higher total precipitation of 197 mm (7.8 in) spread over 20 days, the humidity remains constant at 80%. For more detailed information on the weather in Arosa during August, you can check Arosa weather in August.
May and September offer distinct weather patterns, each with its own unique characteristics. In May, temperatures range from a chilly -13°C (9°F) at night to a pleasant average of 5°C (41°F), peaking at 21°C (69°F) during the day. This month experiences considerable precipitation, averaging 161 mm over 23 days, while humidity levels hover around 80%. In contrast, September sees slightly milder conditions with nighttime lows of -11°C (13°F) and an average of 7°C (46°F), with daytime highs reaching 20°C (68°F). The rainfall decreases to 134 mm over 16 days, and humidity rises slightly to 83%. For a closer look at September weather in Arosa, check out Arosa weather in September.
In comparing the weather between May and October, we see some notable differences. May experiences a wider temperature range with a minimum of -13°C (9°F) and a maximum of 21°C (69°F), averaging around 5°C (41°F). In contrast, October has milder highs and lows, ranging from a minimum of -9°C (16°F) to a maximum of 16°C (61°F), with an average temperature of 3°C (39°F). Precipitation is more frequent in May, totaling 161 mm (6.3 in) over 23 days, compared to October's 133 mm (5.3 in) across only 12 days. Additionally, October tends to be slightly more humid, at 90%, compared to May's 80%. For more specific insights on the conditions during this month, check out Arosa weather in October.
May and November display a stark contrast in weather patterns. In May, temperatures range from a minimum of -13°C (9°F) to a maximum of 21°C (69°F), with an average temperature of 5°C (41°F). The month experiences significant precipitation, totaling 161 mm (6.3 in) over approximately 23 days, accompanied by a humidity level of 80%.
In contrast, November sees much colder conditions, with temperatures dipping as low as -21°C (-5°F) and a maximum of only 12°C (55°F), resulting in an average of -3°C (27°F). The precipitation decreases to 103 mm (4.0 in) spread across 13 days, but humidity rises slightly to 88%.
For more detailed information about weather patterns in November specifically, you can check Arosa weather in November.
May and December present stark contrasts in weather. In May, temperatures range from a chilly -13°C (9°F) at night to a pleasant 21°C (69°F) during the day, with an average temperature of 5°C (41°F). The month sees significant precipitation, with 161 mm (6.3 in) falling over 23 days, and humidity levels around 80%. In contrast, December brings much colder conditions, with temperatures dipping as low as -27°C (-17°F) and averaging -7°C (19°F). The maximum temperature reaches just 4°C (40°F), accompanied by 129 mm (5.1 in) of precipitation over 16 days and a higher humidity level of 90%. For more details on the weather during this month, visit Arosa weather in December. Overall, May is characterized by mild spring-like conditions, while December is defined by the deep chill of winter.
As you step into May in Arosa, you'll experience a remarkable transition compared to the remaining months. The average temperature hovers around a refreshing 5°C, while sunny days can peak at a pleasant 21°C, offering a delightful contrast to the chill of earlier spring months. Despite this warming trend, May still maintains a notable level of humidity at 80%, leading to frequent precipitation days that contribute to the lush alpine scenery. With 161 mm of rainfall spread over approximately 23 days, it’s a month where you’ll want to embrace both the sunshine and the occasional shower. For more in-depth insights into the climate of this stunning region, be sure to check out Arosa Climate.