Last updated: August 27, 2025
May in Spiez, Switzerland is a month of striking contrasts, with temperatures reaching a maximum of 25°C (78°F) and dipping to a chilly minimum of -7°C (20°F), averaging around a mild 9°C (48°F). This transitional season also brings notable precipitation, totaling 182 mm (7.2 in) over 19 rainy days, resulting in a humidity level that hovers around 80%. As nature awakens in vibrant colors, May presents both challenges and charm, making it an intriguing time to experience this picturesque Swiss locale.
In May, Spiez, Switzerland experiences a delightful transition towards warmer weather, with temperatures ranging from a brisk -7°C (20°F) at night to a pleasant 25°C (78°F) during the day. This month marks a clear departure from the winter chill, as the average temperature rises to 9°C (48°F), inviting both locals and tourists to revel in the emerging beauty of spring. The steady increase in daytime highs reflects a burgeoning vitality in the landscape, perfect for outdoor activities and exploration. As nature awakens, May becomes a captivating time in Spiez, bridging the gap between the last remnants of winter and the anticipation of summer warmth.
May in Spiez, Switzerland showcases a significant uptick in precipitation, with 182 mm (7.2 in) of rainfall spread over 19 days, making it one of the wettest months of the year. This surge contrasts notably with the preceding month of April, which recorded a much lighter 94 mm (3.7 in) over just 12 days. The increased rainfall in May heralds the transition into the warm summer months, indicating that nature is gearing up for the lush growth that follows. As the showers continue through June, reaching a peak of 225 mm (8.9 in), it’s evident that May acts as a precursor to the region’s vibrant summer landscape, transforming Spiez into a picturesque haven of greenery and vitality.
As spring transitions into summer, May in Spiez, Switzerland experiences a noticeable drop in humidity, settling at 80%. This marks a significant improvement from the 92% in January and continues the downward trend initiated in the earlier months, where humidity levels gradually decreased from 89% in February to 84% in April. While May remains comfortably humid compared to the drier summer months ahead, it indicates a gradual shift towards more pleasant conditions. Interestingly, this level of humidity aligns with August, suggesting a consistency in conditions as Spiez approaches mid-year. As the temperatures rise, residents and visitors alike may welcome this slight reprieve from the higher humidity levels characteristic of the winter months.
As May unfolds in Spiez, Switzerland, residents and visitors should brace themselves for the sun's intensity, marked by a UV Index of 9, categorizing exposure as very high. This represents a notable increase from April's UV Index of 7, where protective measures were already recommended for just 25 minutes of sun exposure. In contrast, May dramatically shortens the burn time to a mere 15 minutes, highlighting the need for caution. The upward trend continues into June and July, which also showcase a peak UV Index of 10, indicating that the summer months will demand even more vigilance against sunburn. To prepare for your sunny adventures, check out this detailed guide on the Spiez UV Index to ensure safe sun exposure throughout the month.
UV Risk Categories
As spring blossoms into summer, May shines brightly in Spiez, Switzerland, boasting an impressive 361 hours of sunshine. This delightful month is a gradual peak in the trend of increasing daylight, following April’s vivid 356 hours. The progression is evident as the days grow longer and warmer, setting the stage for even sunnier months ahead, like June, which basks in 386 hours. With each passing month, the allure of Spiez becomes even more enticing, as the sun-drenched landscape invites visitors to embrace outdoor adventures and relish the longer days.
In Spiez, Switzerland, the likelihood of sunny weather sees a notable fluctuation throughout the year. Beginning the year with a modest 19% chance of sunshine in January, the sun gradually becomes more prevalent as spring arrives, reaching 48% in April. However, this promising trend takes a slight dip in May, where the chance of sunny days drops to 31%. This decrease contrasts with the upward trajectory observed in earlier months, suggesting that while May can bring charming spring blooms, it may also feature a mix of overcast days. As summer approaches, the likelihood stabilizes around 33% in both June and July, hinting at a relatively balanced forecast ahead.
In Spiez, Switzerland, the arrival of May marks a delightful transition into longer daylight hours, with the sun gracing the skies for a generous 15 hours each day. This increase is part of an uplifting trend that begins in winter’s chilly grip, where January offers only 9 hours of daylight. As the seasons shift from the starkness of winter to the warmth of spring, daylight steadily expands, with April already providing 13 hours of light. May's radiant days are a precursor to summer, where June, July, and August** maintain that same delightful 15-hour mark, establishing a vibrant atmosphere perfect for outdoor pursuits. Following this sunny peak, daylight gradually wanes again, as it transitions to October’s 10 hours and November’s 9 hours, echoing the cyclic nature of time in this picturesque locale.
In Spiez, Switzerland, May ushers in a gentle breeze, with an average wind speed of 1.6 m/s (4 mph), maintaining the tranquil atmosphere that characterizes this beautiful town. This month’s wind velocity is consistent with the early spring months, showcasing a slight stability as it mirrors January's and February's light gusts. As the warmer summer months approach, wind speeds tend to taper off, with June recording the lowest average of 1.3 m/s (3 mph), suggesting that the calm demeanor of May may soon give way to even quieter days. Overall, the transitional spring period hints at a cozy, inviting environment, perfect for outdoor activities amid Spiez's stunning landscapes.
Weather in Spiez varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Spiez, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January exhibit strikingly contrasting weather patterns. In May, temperatures range from a chilly -7°C (20°F) to a pleasant maximum of 25°C (78°F), with an average around 9°C (48°F). The month sees substantial precipitation, totaling 182 mm (7.2 in) over 19 days, and humidity levels at 80%, creating a fresh and invigorating atmosphere. In contrast, January is much colder, with temperatures dipping to a minimum of -19°C (-1°F) and an average of -3°C (26°F), only peaking at 9°C (48°F). Despite receiving less precipitation—123 mm (4.9 in) over 12 days—January is marked by higher humidity at 92%. For more specific insights into January's conditions, you can visit Spiez weather in January.
When comparing the weather in May to that in February, it's clear that May offers a much milder climate. With minimum temperatures reaching -7°C (20°F) and an average of 9°C (48°F), May sees a maximum of 25°C (78°F), allowing for a more comfortable experience overall. In contrast, February has harsher temperatures, with lows of -18°C (-1°F) and an average of -1°C (31°F), peaking at only 14°C (58°F). Additionally, May experiences significantly more rainfall, with 182 mm (7.2 in) over 19 days, compared to February’s 103 mm (4.0 in) across just 11 days. Interestingly, February exhibits higher humidity levels at 89%, while May's humidity sits at 80%. For a more detailed look at February conditions, visit Spiez weather in February.
When comparing the weather in March and May, a noticeable shift in temperatures and conditions can be observed. March typically sees much colder temperatures, with a minimum of -23°C (-9°F) and an average around 2°C (36°F), while May enjoys milder weather with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 25°C (78°F). Precipitation is common in both months, but May experiences a higher total rainfall of 182 mm (7.2 in) over 19 days compared to March's 125 mm (4.9 in) spread over 15 days. Furthermore, humidity levels are slightly higher in March at 87%, compared to May's 80%. For more details on March weather, you can check Spiez weather in March. Overall, May presents a more temperate and wetter climate, paving the way for the warmer days of summer ahead.
In comparing the weather between April and May, we see a notable warming trend. April features lower temperatures, with averages around 5°C (42°F), while May warms up significantly, averaging 9°C (48°F) and reaching a maximum of 25°C (78°F). Although May experiences more precipitation at 182 mm (7.2 in) over 19 days compared to April's 94 mm (3.7 in) over 12 days, the overall increase in temperature signifies a transition into late spring. Additionally, humidity remains relatively high in both months, with April at 84% and May at 80%. For a detailed look at April weather in Spiez, you can visit Spiez weather in April.
In comparing the weather between May and June, May generally experiences cooler temperatures, with a minimum of -7°C (20°F) and an average of 9°C (48°F), while June sees milder conditions with temperatures ranging from a minimum of 1°C (34°F) to an average of 14°C (57°F). Additionally, June tends to be warmer, reaching a maximum of 29°C (85°F) compared to May's maximum of 25°C (78°F). Precipitation is slightly higher in June, totaling 225 mm (8.9 in) over 18 days, versus 182 mm (7.2 in) across 19 days in May. Humidity remains fairly consistent, with May at 80% and June slightly higher at 82%. For more specific insights into the June weather, you can visit Spiez weather in June.
May and July exhibit contrasting weather patterns, reflecting the transition from spring to summer. In May, temperatures range from a chilly minimum of -7°C (20°F) to a pleasant maximum of 25°C (78°F), with an average of 9°C (48°F). The month also sees considerable precipitation, totaling 182 mm (7.2 in) over 19 days, accompanied by high humidity levels of around 80%. In contrast, July experiences milder temperatures, with a minimum of 5°C (41°F) and a maximum of 29°C (84°F), resulting in an average of 15°C (60°F). While it is slightly wetter than May, July's precipitation reaches 219 mm (8.6 in) over 18 days, with humidity increasing to 83%. For a detailed overview of July weather, you can refer to Spiez weather in July.
May and August exhibit notable differences in weather, despite sharing similar humidity levels of 80%. In May, temperatures can drop to a chilly -7°C (20°F), with an average of 9°C (48°F) and a high of 25°C (78°F). This month also experiences significant precipitation, totaling 182 mm (7.2 in) over 19 days. In contrast, August enjoys milder conditions, with a minimum temperature of 5°C (41°F), an average of 15°C (59°F), and a maximum of 28°C (82°F). Precipitation in August is slightly higher at 203 mm (8.0 in), spread across 18 days. For more details on August weather specifically, check out Spiez weather in August.
May and September offer contrasting weather experiences. In May, temperatures range from a chilly minimum of -7°C (20°F) to a pleasant maximum of 25°C (78°F), with an average of 9°C (48°F). This month also sees significant precipitation, totaling 182 mm (7.2 in) over 19 days, with humidity levels hovering around 80%. In contrast, September presents milder conditions, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 23°C (73°F), averaging 11°C (53°F). The precipitation is less, at 124 mm (4.9 in) over 14 days, and humidity slightly increases to 83%. For more details about September weather, check out Spiez weather in September.
May and October in this region exhibit notable differences in weather patterns. In May, temperatures range from a minimum of -7°C (20°F) to a maximum of 25°C (78°F), with an average of 9°C (48°F). The month experiences fairly high precipitation levels of 182 mm (7.2 in) over 19 days, along with a humidity level of 80%. In contrast, October's temperatures are milder, with a minimum of -4°C (26°F) and a maximum of 19°C (67°F), averaging around 7°C (45°F). Precipitation is lower at 138 mm (5.4 in) over 13 days, but humidity climbs to 90%. For more details about October weather, you can check Spiez weather in October.
May and November present contrasting weather patterns, reflecting the transition between spring and winter. In May, temperatures range from a chilly -7°C (20°F) to a pleasant max of 25°C (78°F), with an average of 9°C (48°F). This month typically sees significant rainfall, with 182 mm (7.2 in) falling over 19 days, and humidity levels at a comfortable 80%. In contrast, November brings colder conditions, with temperatures dipping to a minimum of -10°C (13°F) and averaging around 2°C (35°F), peaking at 18°C (64°F). This month experiences less precipitation at 97 mm (3.8 in) over 13 days, although humidity is slightly higher at 88%. For more detailed information, you can check out Spiez weather in November.
May and December present distinctly different weather patterns. In May, temperatures range from a chilly -7°C (20°F) at night to a pleasant 25°C (78°F) during the day, with an average of 9°C (48°F). This month also sees 19 days of precipitation, contributing to a total of 182 mm (7.2 in) of rainfall, accompanied by a humidity level of 80%. In contrast, December experiences colder temperatures, with minimums dropping to -13°C (8°F) and daytime highs only reaching up to 9°C (49°F), averaging -2°C (29°F). The month is slightly drier, with 17 days of precipitation totaling 175 mm (6.9 in) and a higher humidity level of 90%. For more detailed insights into the winter weather, you can check out Spiez weather in December.
May in Spiez ushers in a refreshing transition from the chill of winter to the warmth of summer, characterized by mild temperatures that can reach a pleasant 25°C (78°F). With an average of 9°C (48°F), the month provides a welcome reprieve from the lower winter readings, although cooler nights are still common. While the air is filled with the promise of blooming flowers, expect frequent rain, with precipitation occurring on about 19 days and totaling 182 mm (7.2 in), contributing to the region's lush greenery. The high humidity at 80% further enhances the freshness of late spring, making May significantly wetter and more vibrant compared to the drier preceding months. For more detailed information, check out Spiez Climate.