Last updated: August 27, 2025
September in Sils-Segl Maria, Switzerland offers a captivating transition from summer to autumn, marked by a maximum temperature of 18°C (65°F) and an average of 6°C (44°F). As temperatures dip, the region experiences a notable minimum of -12°C (11°F), inviting cooler sensations that herald the changing season. This month also sees 126 mm (5.0 in) of precipitation over approximately 15 days, resulting in a relatively high humidity level of 83%. Visitors can expect a vibrant landscape, where the lush greenery begins to give way to the warm hues of fall, accentuated by occasional rain showers, making September a picturesque time to explore this stunning Swiss locale.
In September, Sils-Segl Maria begins the transition from summer warmth to cooler autumn temperatures. The minimum temperature drops to a brisk -12°C (11°F), while the average settles at a refreshing 6°C (44°F), providing a glimpse of the chillier months ahead. The maximum temperature reaches a comfortable 18°C (65°F), making it one of the last opportunities to enjoy mild outdoor adventures before winter sets in. Compared to the preceding summer months, where temperatures hovered around 10°C to 25°C (51°F to 77°F), September's cooling trend signals the end of the warm season. As autumn approaches, visitors can experience the stunning landscape transformed by the onset of fall foliage, complemented by the crisp air that characterizes this beautiful Swiss region.
In September, Sils-Segl Maria experiences a notable shift in weather patterns, with precipitation totaling 126 mm (5.0 in) over 15 days. This amount represents a decrease from the wetter months of August and July, which saw higher totals of 195 mm (7.7 in) and 159 mm (6.3 in), respectively. Despite this decline, September still maintains a significant level of moisture, contributing to the region’s rich biodiversity and lush landscapes. The trend of increasing precipitation from the earlier months of spring to the peak of summer is evident, though the early autumn ushers in a period of relative dryness, with October expected to bring a slight uptick in rainfall again. This cyclical pattern emphasizes the delicate balance of Sils-Segl Maria’s climate, transitioning from the vibrant summer rains to the cooler, crisp days of fall.
September in Sils-Segl Maria, Switzerland, marks a subtle shift in humidity, maintaining a level of 83%. This month stands out as a moderate transition from the summer warmth of 80% in August and a precursor to the wetter months ahead, with October and December reaching 90%. As autumn sets in, the relative humidity typically remains higher than in the spring months, peaking earlier in the year at 92% in January. The overall trend indicates a gradual decline in humidity from the winter highs, followed by a mild summer dip before the fall resurgence, creating a dynamic climate that characterizes this picturesque region.
As September rolls into Sils-Segl Maria, Switzerland, the UV Index reflects a gradual decline, settling at 7, which falls into the high exposure category. This indicates a shift from the peak summer values seen in July and August, where the index hit an impressive 10. Nevertheless, the potential for sunburn remains significant, with a burn time of approximately 25 minutes. It's important to note that while September offers milder conditions, awareness of UV levels is still essential for outdoor activities. To stay informed about the daily UV Index and ensure safe sun exposure, visit the Sils-Segl Maria UV Index.
UV Risk Categories
As September unfolds in Sils-Segl Maria, Switzerland, the sun continues to grace the region with its brilliance, offering 309 hours of daylight. This month marks a transition from the sunniest peak of summer, where July basked in a remarkable 410 hours of sunlight, to the cooler hues of autumn. Interestingly, while the hours of sunshine begin to taper off from the vibrant summer months, September still boasts a healthy amount of light—more than the early winter months of November and December. With days gradually shortening but warmth lingering in the air, September invites both locals and travelers to bask in the golden glow of early fall, making it a delightful time to explore the stunning landscapes and picturesque scenery that Sils-Segl Maria has to offer.
In September, the likelihood of sunny weather in Sils-Segl Maria, Switzerland, stands at 26%, slightly lower than the summer months of July and August, which both hover around 27-32%. This decline marks a transition into the cooler autumn season, as the vibrant summer days give way to more unpredictable weather patterns. Comparatively, September's sun chances are not far off from those in May and June, contributing to a generally mild climate perfect for enjoying the stunning alpine scenery. While the sun may not shine as frequently, the enchanting landscapes during this period make Sils-Segl Maria a captivating destination for those seeking a blend of leisure and nature.
As summer gracefully transitions into autumn, September in Sils-Segl Maria, Switzerland, enjoys a satisfying 12 hours of daylight. This month marks a gentle decline from August's generous 14 hours, signaling the approach of shorter days. The lengthening shadows hint at the seasonal changes ahead, as daylight decreases steadily towards October's 10 hours. This rhythm of changing light not only reflects the beautiful dance of nature but also invites both residents and visitors to embrace the serene beauty of the Swiss landscape, whether under the warm late-summer sun or the crisp early autumn skies.
As the seasons transition in Sils-Segl Maria, September witnesses a gentle shift in the wind. With an average wind speed of 1.2 m/s (3 mph), it is among the calmest months of the year, reflecting a softening breeze that invites tranquility. This subtle reduction in wind speed, following the slightly higher velocities of summer at 1.5 m/s (3 mph), suggests a gradual winding down as autumn approaches. Interestingly, September's winds are reminiscent of February's lull, both registering at 1.2 m/s. As nature prepares for the colder months ahead, the peaceful winds of September in this picturesque Swiss retreat offer a serene backdrop for reflection and appreciation of the stunning alpine surroundings.
Weather in Sils-Segl Maria varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sils-Segl Maria, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures range from a chilly min of -12°C (11°F) to a more pleasant max of 18°C (65°F), with an average of 6°C (44°F). The month experiences considerable rainfall, with 126 mm (5.0 in) over about 15 days, while humidity remains relatively high at 83%. In contrast, January is significantly colder, with temperatures plummeting to a minimum of -27°C (-17°F) and an average of -11°C (12°F), peaking at just 2°C (36°F). Precipitation decreases to 75 mm (2.9 in) over 10 days, but humidity is higher at 92%. For more details on January weather specifics, you can visit Sils-Segl Maria weather in January.
September and February present strikingly different weather patterns. In September, temperatures range from a chilly -12°C (11°F) at night to a pleasant 18°C (65°F) during the day, with an average of 6°C (44°F). It experiences higher precipitation with about 126 mm (5.0 in) spread over 15 days, and a humidity level of 83%. In contrast, February is much colder, with minimum temperatures dropping to -28°C (-18°F) and a daytime high of only 6°C (43°F), averaging -8°C (18°F). The month sees significantly less precipitation, at 59 mm (2.3 in) over 11 days, but with a higher humidity level of 89%. For more specific insights into weather conditions, check out Sils-Segl Maria weather in February.
In comparing the weather between September and March, significant differences become apparent. September boasts a milder temperature range with minimums around -12°C (11°F) and maximums reaching up to 18°C (65°F), averaging 6°C (44°F). The month experiences considerable precipitation, with 126 mm (5.0 in) spread over 15 days, alongside a relatively high humidity of 83%. In contrast, March is significantly colder, with temperatures dropping to a minimum of -26°C (-14°F) and a maximum of only 11°C (52°F), resulting in an average temperature of -5°C (23°F). Although March has less precipitation at 90 mm (3.5 in) over 13 days, the humidity remains high at 87%. For more detailed insights into March weather, you can explore Sils-Segl Maria weather in March.
When comparing the weather in September and April, notable differences emerge. September typically enjoys milder temperatures, with averages around 6°C (44°F), ranging from a minimum of -12°C (11°F) to a maximum of 18°C (65°F). In contrast, April is significantly colder, averaging -1°C (31°F), and records a minimum of -19°C (-1°F) and a maximum of 12°C (54°F). Precipitation levels are slightly higher in September at 126 mm (5.0 in) over 15 days, compared to April's 99 mm (3.9 in) over 12 days, with both months experiencing high humidity around 83-84%. For a more detailed look at April's weather in the area, you can check out Sils-Segl Maria weather in April.
When comparing the weather in September and May, we can see some interesting similarities and differences. Both months experience a maximum temperature of 18°C (65°F), but September's average is slightly warmer at 6°C (44°F) compared to May's average of 3°C (38°F). In September, the minimum temperature is a bit milder at -12°C (11°F), while May sees a lower minimum of -13°C (8°F). Precipitation is also notable; September receives 126 mm (5.0 in) over 15 days, while May has a higher total of 150 mm (5.9 in) spread over 22 days, making May the wetter month overall. Interestingly, both months have high humidity, with September at 83% and May slightly lower at 80%. For more detailed information on May weather, you can check Sils-Segl Maria weather in May.
In comparing the weather between September and June, we see notable differences in temperatures and precipitation. September experiences a broader range of temperatures, with minimums dropping to -12°C (11°F) and maximums reaching 18°C (65°F), resulting in an average of 6°C (44°F). In contrast, June offers milder conditions with minimums around -2°C (28°F) and maximums climbing to 25°C (77°F), averaging 9°C (49°F). Despite June being warmer, it also sees more rainfall, with precipitation at 159 mm (6.3 in) over 19 days compared to September's 126 mm (5.0 in) over 15 days. Humidity levels are quite similar, with September at 83% and June slightly lower at 82%. For a detailed overview of June weather, check out Sils-Segl Maria weather in June.
In comparing the weather of September and July, it becomes clear that September experiences cooler temperatures, with a minimum of -12°C (11°F) and an average of 6°C (44°F), while July sees warmer conditions, ranging from a minimum of 0°C (33°F) to an average of 10°C (51°F) and a maximum of 23°C (73°F). Additionally, both months are quite damp, but July has slightly higher precipitation at 159 mm (6.3 in) over 21 days compared to September’s 126 mm (5.0 in) over 15 days. Interestingly, the humidity remains consistent at 83% for both months, adding to the cool, crisp feel of September and the warmer atmosphere of July. For detailed information on July's weather, you can check Sils-Segl Maria weather in July.
In comparing the weather between August and September, it's evident that September is notably cooler. The maximum temperature in September reaches only 18°C (65°F), which is slightly lower than August's maximum of 21°C (70°F). Additionally, September experiences a more significant drop in average temperature, settling at 6°C (44°F) compared to August's 10°C (51°F). Precipitation levels are also different; September sees 126 mm (5.0 in) over 15 days, while August has a higher total of 195 mm (7.7 in) spread across 21 days. Interestingly, humidity remains fairly consistent, with September at 83% and August at 80%. For more detailed information on August conditions, you can visit Sils-Segl Maria weather in August.
In September, temperatures in Sils-Segl Maria typically range from a minimum of -12°C (11°F) to a maximum of 18°C (65°F), with an average temperature of around 6°C (44°F). The month experiences significant rainfall, totaling 126 mm (5.0 in) over 15 days and maintaining a humidity level of 83%. Conversely, October sees a slight drop in maximum temperatures, peaking at 14°C (57°F) and averaging 2°C (36°F), while the minimum temperature increases slightly to -10°C (14°F). Rainfall also increases in October, reaching 148 mm (5.8 in) over just 11 days, accompanied by higher humidity at 90%. For more detailed information, check out Sils-Segl Maria weather in October.
September and November showcase a noticeable shift in 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 temperature of 6°C (44°F). The month sees approximately 126 mm (5.0 in) of precipitation across 15 days, alongside a humidity level of 83%. In contrast, November brings a more frigid climate, with minimum temperatures dropping to -22°C (-8°F) and a maximum of only 8°C (47°F), resulting in an average temperature of -4°C (25°F). Precipitation slightly increases to 132 mm (5.2 in) over 14 days, with humidity also rising to 88%. For more details on November's weather conditions, you can refer to Sils-Segl Maria weather in November.
In September, temperatures range from a chilly -12°C (11°F) at night to a pleasant 18°C (65°F) during the day, with an average of 6°C (44°F). The month sees 126 mm (5.0 in) of precipitation over 15 days, with humidity levels at 83%. In contrast, December is significantly colder, with temperatures dropping to a minimum of -26°C (-14°F) and an average of -9°C (16°F), peaking at only 2°C (37°F). Precipitation remains similar at 125 mm (4.9 in) over 15 days, but humidity increases to 90%, creating a much crisper atmosphere. For a detailed look at winter weather conditions, check out Sils-Segl Maria weather in December.
As September arrives in Sils-Segl Maria, the weather takes on a distinctly cooler and wetter character compared to the balmy summer months. The transition is marked by lower maximum temperatures and more frequent rainy days, creating an atmosphere that is typically 83% humid. With 126 mm of precipitation spread across about half the month, the landscape begins to shift into its vibrant autumn hues, making it a serene time for those who enjoy the tranquility of nature. For a deeper understanding of what to expect throughout the year, explore the full details at Sils-Segl Maria Climate.