Last updated: August 27, 2025
In September, Samedan, Switzerland, experiences a dynamic shift in weather as the summer wanes, showcasing a maximum temperature of 18°C (65°F) and a cooler average of 6°C (44°F). Nights can be quite chilly, plunging to a minimum of -12°C (11°F). With 126 mm (5.0 in) of precipitation spread across 15 days, the month often brings frequent rain showers, contributing to an overall humidity level of 83%. This combination creates a refreshing atmosphere, perfect for enjoying the breathtaking landscapes and vibrant autumn colors.
In September, Samedan, Switzerland, begins to transition into autumn, with temperatures reflecting this change. Min temperatures drop to around -12°C (11°F), signaling the retreat of summer warmth, while the average temperature hovers at 6°C (44°F). The highs can reach a pleasant 18°C (65°F), offering a hint of lingering warmth but with cool evenings. This month acts as a bridge between the lingering warmth of summer and the onset of colder autumn days, making it a captivating time for those who appreciate the beauty of shifting seasons in the Swiss Alps. As the air crispens, the landscape transforms, painted in vibrant shades of gold and amber, inviting outdoor adventures amidst breathtaking scenery.
September in Samedan, Switzerland, marks a transition into autumn with an average precipitation total of 126 mm (5.0 in), making it one of the wetter months of the year. Rain graces the region for around 15 days, providing a lively contrast to the vibrant fall foliage. While slightly less than the summer months of July and August, which average 159 mm and 195 mm, respectively, September's precipitation maintains a steady rhythm of moisture that is vital for the lush alpine environment. As the year progresses towards October, where precipitation increases again to 148 mm (5.8 in) over 11 days, the gradual shift in weather patterns hints at the changing seasons, highlighting the unique climate dynamics of this picturesque Swiss town.
In September, Samedan experiences a slight uptick in humidity, with levels at 83%. This marks a subtle shift from the drier summer months of June through August, where humidity dipped to 80%. As autumn approaches, the atmosphere starts to retain more moisture, echoing the higher humidity levels common in earlier months, such as January’s peak at 92% and October’s significant rise back to 90%. Overall, September’s humidity reflects a transitional phase, setting the stage for the wetter, chillier months ahead, while still retaining some of the lingering warmth of summer.
As September arrives in Samedan, Switzerland, the UV Index begins to taper off from the peak summer values, reflecting a transition toward autumn. With an index of 7, categorized as high, residents and visitors alike should remain vigilant about sun exposure, as the recommended burn time stands at 25 minutes. This month continues a trend of elevated UV levels experienced throughout the summer, where indices consistently reached very high levels of 8 to 10 from April to August. Despite the slight decrease in September, the UV index still calls for protective measures, especially during midday hours. To stay informed about the UV conditions throughout the year, check out the detailed information at Samedan UV Index.
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September in Samedan, Switzerland, is a delightful transition from the sun-drenched heights of summer to the cooler embrace of autumn. With 309 hours of sunshine, it captures the tail end of summer's warmth, although slightly less than the peak in July at 410 hours and August’s generous 366 hours. As the days begin to shorten, September still grants an impressive amount of sunshine compared to the colder months ahead, like October's 276 hours and November's moderate 204 hours. This trend showcases how the lingering summer sunlight enriches September, making it a perfect time for outdoor activities amidst the stunning alpine scenery, all before winter’s chill sets in.
In Samedan, Switzerland, the likelihood of sunny weather in September reflects a gradual decline as summer transitions to autumn, with only a 26% chance of sunshine. This trend continues from peak summer months, where July and August maintain similar probabilities at 27% and 32% respectively. Compared to earlier spring months, such as March and April—which have higher chances of sun—September offers a more subdued embrace of sunlight. As the month progresses, layers of fog and cooler temperatures become more common, hinting at the changing seasons ahead. Thus, while September still holds moments of brilliance, one might find the sun peeking through clouds less often than in the warmer months.
As summer fades, September in Samedan, Switzerland, witnesses a gentle decline in daylight, with approximately 12 hours of sunshine illuminating the picturesque landscape. This decrease marks the transition from the vibrant, sun-drenched days of summer, which basked in up to 15 hours of daylight during June through August. Following the peak of summer, daylight begins to wane, heralding the arrival of autumn and the impending shorter days of October, which then dip back to 10 hours. With September's gradual reduction in sunlight, the changing season invites a refreshing ambiance, as nature prepares for the inevitable transition into the cozy embrace of fall and winter.
As September arrives in Samedan, Switzerland, the gentle breezes begin to echo the arrival of autumn, with an average wind speed of 1.2 m/s (3 mph) that reflects a slight drop from the summer months. Notably, the wind remains relatively calm, providing a tranquil backdrop for scenic mountain views and leisurely outdoor activities. This trend of mild winds continues a pattern seen throughout the year, where the peak summer months of June and July maintain a steady wind speed of 1.7 m/s (4 mph). In contrast, September, with its softer gusts, marks a transition as the landscape prepares for the vibrant colors of fall. The overall consistency in wind speed across the seasons, with January to August averaging between 1.2 to 1.7 m/s, suggests that while Samedan is blessed with relatively calm weather, the subtle variations beautifully reflect the changing seasons.
Weather in Samedan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Samedan, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather in Samedan offers a much milder climate compared to January, with average temperatures hovering around 6°C (44°F) and maximums reaching up to 18°C (65°F). In contrast, January presents a harsher environment, with average temperatures plummeting to -11°C (12°F) and maximums rarely exceeding 2°C (36°F). Precipitation is more frequent in September, with 126 mm (5.0 in) falling over 15 days compared to the 75 mm (2.9 in) over 10 days in January. Additionally, humidity levels are slightly higher in January at 92%, compared to 83% in September. For more details on January weather, you can check the link: Samedan weather in January.
September and February exhibit striking contrasts in weather conditions. In September, temperatures range from a chilly minimum of -12°C (11°F) to a mild maximum of 18°C (65°F), with an average of 6°C (44°F). This month experiences significant rainfall, totaling 126 mm (5.0 inches) over approximately 15 days, accompanied by relatively high humidity at 83%. In contrast, February is much colder, with temperatures dipping to a minimum of -28°C (-18°F) and only reaching a maximum of 6°C (43°F), averaging -8°C (18°F). Precipitation in February is lighter, at 59 mm (2.3 inches) over 11 days, with humidity slightly higher at 89%. For more details on this chilly month, visit Samedan weather in February.
September and March present contrasting weather conditions. In September, temperatures range from a minimum of -12°C (11°F) to a maximum of 18°C (65°F), with an average of about 6°C (44°F). This month experiences considerable rainfall, totaling 126 mm (5.0 in) over approximately 15 days, and a humidity level of 83%. In contrast, March has much colder temperatures, with a minimum of -26°C (-14°F) and a maximum of 11°C (52°F), averaging around -5°C (23°F). Although precipitation is lower at 90 mm (3.5 in) over 13 days, humidity is slightly higher at 87%. For more details on the weather specifics, you can check Samedan weather in March.
In comparing the weather between September and April, it's clear that September offers a milder climate with an average temperature of 6°C (44°F) compared to April's chilly average of -1°C (31°F). September sees maximum temperatures reaching 18°C (65°F), while April peaks at just 12°C (54°F). Although both months experience significant precipitation—126 mm (5.0 in) in September and 99 mm (3.9 in) in April—September tends to have a slightly higher number of rainy days at 15 compared to April's 12 days. Additionally, humidity levels are quite similar, with September at 83% and April at 84%. For more detailed information, you can check Samedan weather in April.
When comparing the weather in September and May, both months exhibit similar maximum temperatures, peaking at 18°C (65°F). However, September tends to be slightly warmer overall, with average temperatures of 6°C (44°F) compared to May's 3°C (38°F). May experiences a lower minimum temperature of -13°C (8°F) versus September’s -12°C (11°F). Precipitation levels also differ, with May receiving 150 mm (5.9 in) over 22 days, while September sees 126 mm (5.0 in) across 15 days, indicating that May can be wetter despite having slightly lower humidity levels at 80% compared to September's 83%. For more detailed insights into the weather during this time, you can check out Samedan weather in May.
In comparing the weather between September and June, September experiences cooler temperatures, with a minimum of -12°C (11°F) and an average of 6°C (44°F), while June is significantly warmer, marked by a minimum of -2°C (28°F) and an average of 9°C (49°F). The maximum temperatures in September reach 18°C (65°F), in stark contrast to June's higher maximum of 25°C (77°F). Additionally, both months see a notable amount of precipitation, with September receiving 126 mm (5.0 in) over approximately 15 days and June surpassing that at 159 mm (6.3 in) over 19 days. Humidity levels remain relatively similar, with September at 83% and June slightly lower at 82%. For a more detailed look at June's weather specifics, you can check Samedan weather in June.
In comparing the weather between September and July, it's clear that July tends to be milder and more temperate. With an average temperature of 10°C (51°F) and highs reaching up to 23°C (73°F), July offers warmer conditions, whereas September experiences cooler averages of 6°C (44°F) and maximums of only 18°C (65°F). Both months have similar humidity levels at 83%, but precipitation in July is slightly higher at 159 mm (6.3 in) over 21 days, compared to September's 126 mm (5.0 in) over 15 days. For more detailed insights, you can visit Samedan weather in July.
In comparing the weather of September and August, September exhibits cooler temperatures, with averages ranging from a minimum of -12°C (11°F) to a maximum of 18°C (65°F), while August offers milder conditions, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 21°C (70°F). Precipitation is slightly less in September, totaling 126 mm (5.0 in) over 15 days, compared to August's 195 mm (7.7 in) over 21 days. Additionally, humidity remains relatively high in both months, with September at 83% and August at 80%. For a detailed breakdown of August weather, you can visit Samedan weather in August.
In comparing the weather between September and October, September showcases a slightly warmer climate with maximum temperatures reaching 18°C (65°F) compared to October's peak of 14°C (57°F). However, October brings a notable dip in average temperature, dropping to 2°C (36°F) from September's 6°C (44°F). Additionally, October experiences increased precipitation, with 148 mm (5.8 in) over 11 days, surpassing September’s 126 mm (5.0 in) across 15 days. Humidity also climbs in October, averaging 90% compared to September's 83%. For more detailed insights on October weather, visit Samedan weather in October.
September and November present stark contrasts in weather conditions. September generally experiences milder temperatures, with averages around 6°C (44°F) and maximums reaching up to 18°C (65°F). In contrast, November temperatures plummet, averaging -4°C (25°F) and peaking at a modest 8°C (47°F). Precipitation is fairly consistent between the two months, with September receiving 126 mm (5.0 in) over 15 days and November slightly higher at 132 mm (5.2 in) over 14 days. Humidity levels also rise from 83% in September to 88% in November, enhancing the chill in the air. For a more detailed look at weather conditions in November, visit Samedan weather in November.
In September, the weather is considerably milder with average temperatures around 6°C (44°F) and maximums reaching 18°C (65°F), while December sees a significant drop, with average temperatures plummeting to -9°C (16°F) and highs only reaching 2°C (37°F). Both months experience similar levels of precipitation at approximately 126 mm (5.0 in) in September and 125 mm (4.9 in) in December, though the colder month of December has higher humidity at 90% compared to September's 83%. The more temperate September conditions are ideal for outdoor activities, while December's harsh cold and snow create a distinctly wintry atmosphere. For a detailed look at December weather in the area, you can check Samedan weather in December.
As September arrives in Samedan, it marks a transition from the warmth of summer to the crispness of autumn. The temperatures start to cool, with a noticeable drop from the sweltering highs of July and August, accompanied by increased precipitation, as rain graces the region on about half the days of the month. With humidity levels climbing to 83%, the air feels heavier and more saturated, a departure from the dryer summer months. This blend of cooler temperatures and frequent showers transforms the landscape, making it a picturesque time for hiking and enjoying the rich colors of changing foliage. For more detailed insights into how Samedan's September weather compares with other months, visit Samedan Climate.