Last updated: August 27, 2025
September in Lauterbrunnen, Switzerland, offers a captivating blend of crisp mountain air and picturesque scenery. With average temperatures hovering around 6°C (44°F), peaking at a comfortable 18°C (65°F), this month marks the transition into autumn. However, cooler nights can plummet to a chilly -8°C (17°F), reminding visitors of the alpine altitude. Rainfall is quite frequent, with 16 rainy days contributing to a total of 122 mm (4.8 in) of precipitation, creating a lush and vibrant landscape. Coupled with a humidity level of 83%, September showcases Lauterbrunnen's stunning waterfalls and surrounding mountains, making it an enchanting time for exploration and adventure.
In September, Lauterbrunnen begins to embrace the transition from the warmth of summer to the coolness of autumn, with temperatures ranging from a brisk -8°C (17°F) at night to a comfortable 18°C (65°F) during the day. The average temperature settles at around 6°C (44°F), making it a delightful time for outdoor activities against the backdrop of stunning fall foliage. As the month progresses, the temperatures gradually dip, hinting at the approaching winter chill. This shift is a stark contrast to the balmy conditions experienced in July and August, showcasing Lauterbrunnen's dynamic climate and inviting visitors to experience both its picturesque landscapes and cooler, crisp air.
In September, Lauterbrunnen experiences a moderate precipitation level, with 122 mm (4.8 in) of rainfall spread over 16 days. This marks a notable decrease from the typically higher precipitation of the summer months, such as July and August, which average around 197 mm (7.8 in) and 195 mm (7.7 in), respectively. The transition into autumn begins to reveal patterns of variability, as the rainfall is consistent but less intense than peak summer. Additionally, the number of rainy days starts to decline, reflecting the shift toward drier conditions typical of the upcoming months, suggesting that while September remains lush and refreshing, it also hints at the impending seasonal change that will soon envelop the valley in the crispness of fall.
September in Lauterbrunnen, Switzerland, marks a slight uptick in humidity, settling at 83%. This month continues a trend of relatively high moisture levels following the summer, where humidity values hovered between 80% and 83%. As autumn approaches, the humidity begins to rise again in October, reaching 90%, reminiscent of the wetter winter months. This subtle dance of humidity highlights Lauterbrunnen's characteristic climate, where lush green valleys and cascading waterfalls thrive, creating a picturesque alpine landscape that captivates visitors year-round.
As summer transitions to autumn in Lauterbrunnen, Switzerland, September brings a UV Index of 7, categorized as high. This marks a decline from the intense summer levels, where the UV Index peaked at 11 in June, signaling the importance of sun protection during those hot months. However, September's 25-minute burn time indicates that while the sun is still strong, it's more forgiving than in the peak summer months. Visitors and locals alike should remain vigilant about skin safety, as the UV Index remains high before it gradually decreases further into autumn. For detailed information on UV levels throughout the year, check out Lauterbrunnen UV Index.
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As summer transitions into autumn, September in Lauterbrunnen, Switzerland, offers a delightful balance of warmth and daylight, boasting 323 hours of sunshine. This marks a gentle decline from the vibrant 417 hours of sunshine in July and 382 hours in August, signaling the end of the summer peak. However, the lingering sunshine allows visitors to revel in the breathtaking landscapes of the Swiss Alps, as the golden hues of autumn begin to emerge. Compared to earlier months, September still shines brightly, surpassing the lower totals of the subsequent months, particularly October's 287 hours and November's 231 hours. The gradual decrease in sunshine hours invites a sense of reflection and tranquility, making it a perfect time for adventurers to explore the picturesque valley bathed in early autumn light.
As September rolls into Lauterbrunnen, the likelihood of enjoying sunny weather presents a mixed picture. With a 21% chance of sunny days, this month follows a summer pattern where sunshine peaks in August at 29% but begins to wane as autumn approaches. It’s noteworthy that the sunny outlook for September is actually slightly lower than the earlier summer months, signaling a transition into the cooler season. However, the chance of sun is significantly higher than the depths of winter, where January struggles with just a 16% chance. September offers a tantalizing promise of clearer skies as the region begins to shift, making it a beautiful, albeit slightly unpredictable, time for visitors seeking to capture the shimmering beauty of Lauterbrunnen.
In September, Lauterbrunnen experiences a notable shift in daylight duration, with the sun gracing the valley for around 12 hours each day. This marks a gentle decline from the peak of 15 hours seen in the summer months of June, July, and August, as the days gradually begin to shorten, hinting at the approaching autumn. The transitional nature of September is evident, as it retains more sunlight than the winter months ahead, yet signals the end of the long, bright days that characterize the warmer season. As the daylight wanes, the village begins to don its autumnal hues, creating a beautiful backdrop for those who cherish the changing seasons.
As September unfolds in Lauterbrunnen, Switzerland, the gentle whispers of the wind signal a seasonal shift, with average speeds dipping to a tranquil 1.0 m/s (2 mph). This change follows a summer where the breeze lingered at a steady 1.2 m/s, creating a serene atmosphere perfect for exploration. Notably, September's winds slow compared to the preceding months, reflecting the onset of autumn and its crisp, refreshing air. As the year progresses, wind speeds begin to pick up again in October, returning to 1.5 m/s, hinting at the rhythmic dance of seasons in this stunning alpine setting. The subtle variation in wind patterns echoes the enchanting beauty of Lauterbrunnen, where each month brings a new chapter to the breathtaking landscape.
Weather in Lauterbrunnen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lauterbrunnen, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures range from a chilly -8°C (17°F) at their lowest to a comfortable 18°C (65°F) at their highest, with an average of 6°C (44°F). The month experiences 122 mm (4.8 in) of precipitation over 16 days, accompanied by a humidity level of 83%. In contrast, January sees a significant drop in temperatures, with minimums plunging to -24°C (-11°F) and a maximum of only 5°C (41°F), resulting in an average of -10°C (15°F). Precipitation increases to 168 mm (6.6 in) over 13 days, and humidity levels rise to 92%. For more details on the weather conditions during this frigid month, check out Lauterbrunnen weather in January.
September and February present contrasting weather experiences. September typically boasts milder temperatures, with minimums around -8°C (17°F) and average highs reaching 18°C (65°F), while February can be significantly colder, with minimums dropping to -25°C (-12°F) and average highs only reaching 7°C (45°F). Both months see considerable precipitation, with September receiving about 122 mm (4.8 in) over 16 days and February slightly less at 114 mm (4.5 in) over 12 days. Humidity levels are also notable, with September at 83% and February slightly higher at 89%. For more detailed insights, check out the Lauterbrunnen weather in February.
In comparing the weather between September and March, we can observe significant differences in temperature and conditions. September typically experiences a milder climate, with temperatures ranging from a minimum of -8°C (17°F) to a maximum of 18°C (65°F) and an average of 6°C (44°F). In contrast, March is notably colder, with temperatures dipping as low as -26°C (-15°F), averaging -5°C (24°F), and a maximum of only 9°C (49°F). Precipitation levels are also notably high in both months; however, March has a slightly greater amount at 147 mm (5.8 in) compared to September's 122 mm (4.8 in), and both months see precipitation on around 16 days. Additionally, humidity levels are high in both months, with March at 87% and September at 83%. For more insights on March weather, you can check Lauterbrunnen weather in March.
When comparing the weather in September and April, it’s clear that September tends to be milder and more comfortable overall. September boasts an average temperature of 6°C (44°F), with a maximum reaching up to 18°C (65°F), while April sees colder temperatures, averaging -1°C (30°F) and peaking at only 11°C (53°F). Both months have significant rainfall, with September receiving 122 mm (4.8 in) over 16 days, compared to April's 102 mm (4.0 in) over 13 days. Humidity levels are similar, but April's colder temperatures make it feel chillier despite a slightly higher humidity of 84%. For more detailed insights on April weather, please check Lauterbrunnen weather in April.
September and May present contrasting weather patterns, with September generally being milder despite the lingering autumn chill. In September, temperatures range from a minimum of -8°C (17°F) to a maximum of 18°C (65°F), averaging 6°C (44°F) and accompanied by 122 mm (4.8 in) of precipitation over 16 days and a humidity level of 83%. In comparison, May experiences slightly cooler conditions, with a minimum temperature of -11°C (12°F) and a maximum of 16°C (62°F), averaging 3°C (37°F). This month sees more rainfall, totaling 165 mm (6.5 in) over 21 days, while maintaining a lower humidity of 80%. For more detailed information, you can check Lauterbrunnen weather in May.
Comparing the weather in September and June reveals distinct seasonal shifts. In September, temperatures range from a chilly minimum of -8°C (17°F) to a mild maximum of 18°C (65°F), with an average of 6°C (44°F). The month also sees a significant amount of precipitation, totaling 122 mm (4.8 in) across approximately 16 rainy days and maintaining high humidity levels at 83%. In contrast, June features warmer conditions with temperatures ranging from a minimum of -4°C (25°F) to a comfortable maximum of 25°C (77°F), averaging 9°C (48°F). However, it experiences even more precipitation, totaling 168 mm (6.6 in) over about 20 days, while humidity remains slightly lower at 82%. For more detailed insights on the weather specifics during this month, you can check Lauterbrunnen weather in June.
When comparing the weather in September and July, notable differences emerge in temperature and precipitation patterns. In September, temperatures range from a minimum of -8°C (17°F) to a maximum of 18°C (65°F), with an average of 6°C (44°F). In contrast, July offers milder conditions, featuring a minimum of 0°C (32°F) and a maximum of 24°C (75°F), resulting in a more comfortable average of 10°C (51°F). Precipitation is also significantly higher in July, totaling 197 mm (7.8 in) over 24 days, compared to September's 122 mm (4.8 in) across 16 days. Interestingly, both months share the same humidity level of 83%, indicating that while July is wetter and warmer, September ushers in a chillier and drier atmosphere. For more detailed insights, you can check out Lauterbrunnen weather in July.
In September, temperatures experience a notable drop compared to August, with minimums reaching -8°C (17°F) and an average of 6°C (44°F), while August enjoys milder conditions with a minimum of -1°C (31°F) and an average of 10°C (50°F). August also sees higher maximum temperatures at 21°C (70°F) versus September's peak of 18°C (65°F). Precipitation is more pronounced in August, totaling 195 mm (7.7 in) over 21 days, whereas September experiences 122 mm (4.8 in) across 16 days. Interestingly, humidity levels remain similar, with September at 83% and August at 80%. For more detailed insights, you can check out Lauterbrunnen weather in August.
In September, the weather in Lauterbrunnen showcases a milder climate with average temperatures ranging from -8°C (17°F) to a pleasant high of 18°C (65°F). With a total precipitation of 122 mm (4.8 in) over 16 days, it experiences substantial rainfall but remains relatively comfortable, with humidity around 83%.
In contrast, October brings cooler temperatures, dipping to a minimum of -11°C (12°F) and peaking at 14°C (57°F). The month sees increased precipitation, totaling 181 mm (7.1 in) across just 13 days, while humidity rises to 90%. This shift signifies a transition into the more severe autumn conditions. For more detailed information, check Lauterbrunnen weather in October.
September and November exhibit notable differences in weather. September tends to be milder with an average temperature of 6°C (44°F), peaking at 18°C (65°F), while November sees colder conditions with an average of -4°C (25°F) and a maximum of only 10°C (50°F). Both months experience significant precipitation, with September receiving 122 mm (4.8 in) over 16 days and November slightly less at 117 mm (4.6 in) across 15 days. Additionally, humidity rises from 83% in September to 88% in November, reflecting the shift towards the winter months. For more specific details on the weather in November, you can visit Lauterbrunnen weather in November.
In comparing the weather between September and December, a significant drop in temperatures is evident. September experiences milder conditions with an average temperature of 6°C (44°F), while December sees frigid lows averaging -8°C (18°F), with nighttime temperatures plummeting to -24°C (-11°F). Additionally, September is marked by a moderate 122 mm (4.8 in) of precipitation over 16 days, whereas December receives a substantial 229 mm (9.0 in) across 19 days, resulting in a notably wetter month. Humidity levels also rise from 83% in September to 90% in December, contributing to the winter chill. For more details on this frosty month, check out Lauterbrunnen weather in December.
September in Lauterbrunnen brings a noticeable shift as summer recedes, with temperatures dipping considerably, resulting in cooler days and crisper nights. While the average temperature sits lower than the height of summer, the rich fall hues enveloping the valleys add to the allure of the landscape. Rainfall is more prevalent, with about half the month seeing precipitation, leading to increased humidity levels that create a refreshing atmosphere. This unique blend of cool weather and frequent showers distinguishes September from the warmer summer months, making it an ideal time for those seeking a quieter, more introspective experience in this breathtaking region. For more insights into the overall climate patterns, visit Lauterbrunnen Climate.