Last updated: August 27, 2025
In May, Interlaken, Switzerland, transforms into a vibrant canvas of changing weather, with temperatures ranging from a cozy 9°C (48°F) on average to a pleasant maximum of 25°C (78°F). Visitors should, however, prepare for a fair share of rain, as the month sees around 182 mm (7.2 in) of precipitation across 19 days, contributing to a humidity level that hovers at 80%. This blend of temperatures and moisture ensures a lush and picturesque landscape, ideal for outdoor enthusiasts and nature lovers alike. Whether exploring serene lakes or embarking on mountain hikes, May offers a refreshing experience in the heart of the Swiss Alps.
In May, Interlaken awakens with a significant transformation in temperatures, marking a shift towards warmer days and a refreshing ambiance. The minimum temperature hovers around -7°C (20°F), a stark contrast to the frigid conditions of winter, while the average climbs to a pleasant 9°C (48°F). As the month progresses, daytime highs can reach a delightful 25°C (78°F), inviting both locals and visitors to embrace outdoor adventures against the stunning alpine backdrop. This month is truly a bridge to summer, underscoring nature's vibrant rebirth and offering an ideal climate for exploring the breathtaking landscapes and enjoying the burgeoning activities that Interlaken has to offer.
May marks a significant increase in precipitation for Interlaken, Switzerland, with an impressive 182 mm (7.2 in) of rainfall spread over 19 days. This burst of moisture not only surpasses the dry spells of earlier months like April but also sets the stage for a lush, vibrant landscape as spring unfolds into summer. The rise in precipitation this month is a precursor to the higher totals seen in June and July, where averages climb even further. With its wettest month thus far, May clearly showcases Interlaken’s tendency towards wetter conditions as it transitions into the summer season, highlighting the region's lush beauty and the importance of this rainfall for the local ecosystem.
As spring unfolds in Interlaken, Switzerland, May brings a noticeable dip in humidity, dropping to 80%. This decline follows a gradual decrease from January's peak of 92%, highlighting a trend of increasing comfort as temperatures rise. The months leading up to May witness a steady reduction, with April at 84%, paving the way for sunnier, more pleasant days. Interestingly, June sees a slight uptick to 82%, indicating that while May offers some relief, the summer months can still present a touch of humidity. Overall, May stands out as a transitional period, embracing a more inviting atmosphere for outdoor adventures amid majestic alpine scenery.
As spring fades into early summer, May in Interlaken, Switzerland, brings a significant rise in the UV Index, reaching a striking 9—an indication of very high exposure. With a burn time as short as 15 minutes, it’s crucial to protect your skin during this month as the sun's intensity peaks. Following the moderate levels of January and February, the UV Index steadily climbs, peaking in May before hitting its highest point in June and July. This trend highlights the importance of staying aware of UV levels and taking precautions, making May the perfect time to enjoy the outdoors while being sun-smart. For more detailed information, visit Interlaken UV Index.
UV Risk Categories
As spring flourishes in Interlaken, Switzerland, May shines as a beacon of brightness with 361 hours of glorious sunshine, marking a delightful crescendo in daylight hours after the slow ascent from January's mere 169 hours. The month not only outshines April’s 356 hours, but it also sets the stage for an exhilarating summer, where June and July soar to a spectacular 386 and 416 hours respectively. This steady increase from early-year mildness to the lush, sun-drenched days of late spring paints a vivid picture of Interlaken's vibrant transition. As sunshine inches closer, nature awakens and the charm of this stunning locale truly begins to unfold.
In May, the likelihood of sunny weather in Interlaken, Switzerland, stands at 31%, representing a slight dip from the previous months—April peaks at 48%. This decrease suggests that while spring begins to wane, the region transitions towards the dynamic summer months. Interestingly, the early part of the year shows a gradual rise in sunshine probability, with February at 38% and March at 44%, indicating a steady march toward milder weather. However, as summer approaches, the chance of sun stabilizes around 33% in June and July, providing a glimpse of the changing patterns that characterize this beautiful alpine locale. Thus, while May isn't the sunniest month, it hints at the warmer days to come.
In Interlaken, Switzerland, the progression of daylight hours throughout the year reflects the rhythm of changing seasons. Starting with 9 hours in January, the days gradually lengthen, welcoming the blooming of spring. By April, daylight extends to 13 hours, paving the way for the vibrant month of May, where residents and visitors enjoy an invigorating 15 hours of sunlit activities. This trend of ample daylight continues through June and July, offering the perfect backdrop for outdoor adventures in the heart of the Alps. As summer gives way to autumn, the daylight begins to wane, descending to 12 hours in September and narrowing down to 9 hours by November. This gradual shift showcases not only the beauty of each season but also the enchanting transformation of Interlaken's landscape throughout the year.
May in Interlaken, Switzerland, brings a gentle breeze with an average wind speed of 1.6 m/s (4 mph), maintaining the mild conditions characteristic of spring. This month displays a slight consistency in wind speeds compared to its predecessors, with similar rates noted in January and February, while April recorded a slightly lower breeze. As the landscape bursts into vibrant blooms and outdoor activities flourish, the light winds provide a refreshing backdrop for adventures in this picturesque alpine setting. Notably, as we transition into summer with June's average dipping slightly to 1.3 m/s (3 mph), May stands out as a month where the winds contribute to a pleasant and inviting atmosphere, perfect for exploring Interlaken's breathtaking scenery.
Weather in Interlaken varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Interlaken, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present stark contrasts in weather conditions. In May, temperatures range from a chilly -7°C (20°F) to a warm 25°C (78°F), with an average of 9°C (48°F), which invites more outdoor activities. In contrast, January is characterized by its colder climate, with temperatures dropping as low as -19°C (-1°F), averaging -3°C (26°F) and peaking at just 9°C (48°F). While January experiences less precipitation at 123 mm (4.9 in) over 12 days, it has a higher humidity level of 92%, compared to May's 80% humidity and 182 mm (7.2 in) over 19 days. To learn more about January's weather specifics, check out Interlaken weather in January.
In comparison to February, May showcases a significant warming trend, with average temperatures rising from a chilly -1°C (31°F) in February to a more moderate 9°C (48°F) in May. While February sees colder nights with minimum temperatures dropping to -18°C (-1°F), May offers a much milder range, with minimum temperatures around -7°C (20°F) and maximums peaking at 25°C (78°F). Precipitation is more frequent in May, with rain occurring on 19 days and totaling 182 mm (7.2 in), compared to February’s 11 days of precipitation and 103 mm (4.0 in). Both months experience high humidity levels, with February slightly higher at 89% compared to May’s 80%. For more insights, you can check Interlaken weather in February.
May weather is significantly warmer than that of March, with average temperatures rising from a chilly 2°C (36°F) in March to a more pleasant 9°C (48°F) in May. The maximum temperatures in May can reach up to 25°C (78°F), while March only peaks at 16°C (60°F). However, May experiences more rainfall, averaging 182 mm (7.2 in) over 19 days, compared to March’s 125 mm (4.9 in) over 15 days. Additionally, the humidity remains high in both months, with March at 87% and May at 80%. For a more detailed look at March weather, you can visit this link: Interlaken weather in March.
In comparing the weather of April and May, we see a notable transition as spring progresses. April experiences a range of temperatures with a minimum of -12°C (10°F), an average of 5°C (42°F), and a maximum of 19°C (67°F). In contrast, May has a broader temperature range, with a minimum of -7°C (20°F), an average of 9°C (48°F), and a maximum of 25°C (78°F).
While April receives less precipitation at 94 mm (3.7 in) over 12 days, May sees a significant increase with 182 mm (7.2 in) over 19 days, reflecting the wetter conditions typical of late spring. Humidity levels also showcase a slight decrease, with April at 84% compared to May's 80%. For more detailed information, you can check the specific conditions during this month through Interlaken weather in April.
In comparing the weather between May and June, we notice a distinct transition from the cooler to warmer temperatures. In May, temperatures range from a minimum of -7°C (20°F) to a maximum of 25°C (78°F), with an average temperature of 9°C (48°F). It also experiences significant rainfall, totaling 182 mm (7.2 in) over 19 days, and a humidity level of 80%.
June, on the other hand, shows a noticeable increase in warmth, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 29°C (85°F) and an average of 14°C (57°F). However, it receives slightly more precipitation at 225 mm (8.9 in) over 18 days, with humidity rising to 82%. Overall, June presents a warmer and more humid climate compared to May, making it a more vibrant month. For more detailed weather insights, you can check Interlaken weather in June.
In May, temperatures vary from a chilly minimum of -7°C (20°F) to an average of 9°C (48°F), reaching a high of 25°C (78°F). The month sees significant precipitation, with 182 mm (7.2 in) falling over 19 days, and humidity levels are relatively high at 80%. In contrast, July enjoys warmer temperatures, with a minimum of 5°C (41°F) and an average of 15°C (60°F), reaching a maximum of 29°C (84°F). Although July experiences slightly more precipitation at 219 mm (8.6 in), it is spread over 18 days and has an increased humidity level of 83%. For more detailed insights, you can check out Interlaken weather in July.
In May, temperatures show a wider range with minimums dipping to -7°C (20°F) and averaging around 9°C (48°F), while the maximum can reach up to 25°C (78°F). The month is marked by significant precipitation, averaging 182 mm (7.2 in) over 19 days, paired with a high humidity level of 80%. In contrast, August brings milder temperatures, with minimums around 5°C (41°F), an average of 15°C (59°F), and maximums reaching 28°C (82°F). While August has slightly more rainfall at 203 mm (8.0 in) over 18 days, it maintains the same humidity level of 80%. For more detailed weather information, you can check out Interlaken weather in August.
In May, the weather can be quite variable, with temperatures ranging from a chilly -7°C (20°F) at night to a pleasant 25°C (78°F) during the day, averaging around 9°C (48°F). This month experiences significant rainfall, with 182 mm (7.2 in) spread over 19 days, and humidity levels are high at 80%. In contrast, September offers milder conditions with nighttime lows of 0°C (32°F) and daytime highs peaking at 23°C (73°F), averaging 11°C (53°F). There is less precipitation at 124 mm (4.9 in) over 14 days, and humidity slightly rises to 83%. For those interested in more detailed information, check out Interlaken weather in September.
In May, temperatures begin to warm up with an average of 9°C (48°F), ranging from a chilly -7°C (20°F) at night to a pleasant maximum of 25°C (78°F) during the day. The month tends to be quite wet, with a total precipitation of 182 mm (7.2 in) spread across 19 days, and humidity levels around 80%. Meanwhile, October experiences cooler temperatures, with an average of 7°C (45°F), ranging from a minimum of -4°C (26°F) to a maximum of 19°C (67°F). Although October has less precipitation at 138 mm (5.4 in) over just 13 days, the humidity is slightly higher at 90%. For more detailed insights, you can explore Interlaken weather in October.
May and November present contrasting weather patterns, reflecting the transition from spring to late autumn. In May, temperatures typically range from a low of -7°C (20°F) to a pleasant average of 9°C (48°F), peaking at 25°C (78°F), accompanied by considerable precipitation of 182 mm (7.2 in) over 19 days and a humidity level of 80%. In contrast, November features cooler temperatures with a minimum of -10°C (13°F) and an average of just 2°C (35°F), while the maximum reaches 18°C (64°F). Precipitation is lower, totaling 97 mm (3.8 in) across 13 days, and humidity increases slightly to 88%. For those interested in the specific conditions of November, you can find more details here: Interlaken weather in November.
May and December present quite contrasting weather conditions. 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 experiences considerable precipitation, totaling 182 mm (7.2 in) over 19 days, and humidity levels are relatively high at 80%. In contrast, December brings much colder weather, with temperatures ranging from a minimum of -13°C (8°F) to a maximum of 9°C (49°F) and averaging -2°C (29°F). Although precipitation is slightly lower at 175 mm (6.9 in) over 17 days, the humidity is higher at 90%. For more information, visit Interlaken weather in December.
May in Interlaken brings a delightful transition into warmer weather, with temperatures gradually rising and nature blooming vibrantly. While the days can reach a pleasant maximum of 25°C, the crisp morning air often reminds us of winter's lingering chill, with lows dipping around -7°C. This month stands out as relatively wet, with significant precipitation adding a lushness to the surrounding landscapes, though it’s balanced by charming sunny spells. With an average humidity of around 80%, May offers a refreshing experience that contrasts with the dry heat of summer. For more detailed insights on the weather patterns throughout the year, visit Interlaken Climate.