Last updated: August 27, 2025
September in Davos, Switzerland, offers a striking blend of cool mountain air and occasional rain, perfect for those who appreciate the crispness of early autumn. With a maximum temperature peaking at 20°C (68°F) and an average of 7°C (46°F), visitors can expect refreshing days nestled between warmer afternoons and chilly nights, sometimes dipping to a minimum of -11°C (13°F). The month sees around 134 mm (5.3 in) of precipitation across 16 days, creating a lush, vibrant landscape under a backdrop of 83% humidity. It's an ideal time for outdoor enthusiasts to enjoy the stunning natural scenery while preparing for the winter months ahead.
September in Davos, Switzerland, marks a transition from the warmth of summer to the crispness of autumn. With temperatures ranging from a chilly -11°C (13°F) at night to a comfortable daytime high of 20°C (68°F), this month offers a delightful blend of cool, refreshing air and mild sunshine. The average temperature settles around 7°C (46°F), reflecting a gradual shift as the region prepares for the colder months ahead. Compared to the warm summer highs of August, September brings a noticeable dip in temperatures, yet still maintains a pleasant ambiance, making it an ideal time for outdoor activities amidst the stunning alpine scenery. As the leaves begin to change, visitors can enjoy the beauty of early fall while staying comfortably bundled up.
In September, Davos experiences a notable shift in precipitation patterns, receiving 134 mm (5.3 in) of rain over the month, which marks a decrease from the wetter months of August and May. Rainfall occurs on 16 days, providing a refreshing contrast to the summer heat while hinting at the approaching autumn. As the landscape transforms, this moderate precipitation not only nourishes the vibrant flora but also prepares the region for the snow-laden beauty of winter. Overall, September stands out as a month of balance, with rainfall tapering off as the town transitions into the cooler, crisper days of fall.
As summer transitions to autumn in Davos, Switzerland, September brings a notable shift in humidity levels. With humidity at 83%, the month maintains a level comparable to the peak summer months, where values hovered around 80-83%. This slight uptick from the previous months signals the onset of the wetter fall season, as the air becomes richer in moisture. Overall, September's conditions reflect a gradual cooling and an increase in atmospheric moisture that foreshadows the upcoming winter months, which are characterized by higher humidity levels, often exceeding 90% by January and December.
As September rolls into Davos, Switzerland, the UV Index begins to reflect the end of summer, registering a moderate level of 7. This marks a gradual decline from the intense summer months, when values peaked at 10, indicating a very high exposure risk. During September, outdoor enthusiasts can enjoy approximately 25 minutes of safe sun exposure before the risk of burning increases significantly. This trend showcases the transition from high summer UV levels to more moderate conditions, encouraging visitors to take precautions while still relishing the beautiful alpine landscapes. For more detailed information on UV levels throughout the year, check out the Davos UV Index.
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As summer fades, September in Davos, Switzerland offers a delightful balance of sunshine, featuring 309 hours of golden rays. This month marks a gentle decline from the peak of summer, yet it still boasts substantial sunlight, maintaining the vibrant energy of the region. Following a crescendo of light in the warmer months, transitioning from 173 hours in January to an impressive 408 hours in July, September holds onto the warmth and clarity of the preceding summer. While days gradually shorten, the luminosity of autumn begins to reveal the enchanting beauty of the Swiss Alps, creating a picturesque backdrop for both outdoor enthusiasts and tranquil retreats.
As September rolls into Davos, Switzerland, the likelihood of sunny weather begins to show a promising trend, with a 35% chance of clear skies. This figure is notably higher than the summer months of July and August, which hover around 31% and 30%, respectively. While not the sunniest month, September maintains a vibrant atmosphere as the alpine scenery starts to hint at autumn's arrival. The chance of sunshine in September is reminiscent of the spring months, where the sun makes a welcome return after the winter chill, stirring excitement for outdoor activities amidst the stunning mountain backdrop. Overall, visitors can look forward to September's moderately sunny disposition, offering a delightful blend of warmth and scenery.
In Davos, Switzerland, the month of September marks a gentle transition as daylight begins to wane, offering about 12 hours of sunlight. Following the vibrant summer months, where daylight stretches to a peak of 15 hours, September serves as a bridge into the cozy embrace of autumn. The gradual decline in daylight highlights a shift in seasonal activities, as the days become noticeably shorter. As the year progresses, daylight dips further into October and November, ultimately reaching a low of only 9 hours in November. This rhythmic pattern of light not only mirrors the changing seasons but also invites residents and visitors to savor the last warm days before winter's chill sets in.
As September arrives in Davos, Switzerland, the wind whispers a familiar tune, gently echoing the breezy tranquility of summer. With an average wind speed of 1.3 m/s (3 mph), the gusts are consistent with August's calm, creating a seamless transition into the crispness of autumn. Observing the trends throughout the year, September's winds reflect a steady pattern—marked by a slight dip from the higher speeds seen in spring and early summer. Overall, the autumn winds begin to harmonize with the serene landscape, setting the stage for the enchanting transformation of the Swiss Alps as the year gracefully winds down.
Weather in Davos varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Davos, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, it's clear that these months present distinctly different climatic conditions. September enjoys milder temperatures, with an average of 7°C (46°F) and maximums reaching 20°C (68°F), while January experiences much colder conditions, averaging -9°C (16°F) and peaking at only 5°C (40°F). The precipitation in September is notably higher at 134 mm (5.3 in) over 16 days, compared to January's 92 mm (3.6 in) across 11 days. Furthermore, humidity levels in January are slightly higher at 92% compared to 83% in September, contributing to a more biting chill during the winter months. For more detailed information about January weather, visit Davos weather in January.
September and February exhibit stark contrasts in weather conditions. In September, temperatures range from a chilly min of -11°C (13°F) to a pleasant max of 20°C (68°F), with an average of 7°C (46°F). This month sees significant rainfall, totaling 134 mm (5.3 in) over 16 days, and the humidity sits at 83%, making it feel quite damp. In contrast, February is much colder, with temperatures dipping to a low of -26°C (-14°F) and reaching a maximum of only 9°C (48°F), averaging around -6°C (22°F). Precipitation is lower at 65 mm (2.6 in) over 12 days, but the humidity remains high at 89%, enhancing the chilly atmosphere. For more details on February weather, you can visit Davos weather in February.
September and March exhibit notably different weather patterns, reflecting the transition between summer and spring. In September, temperatures range from a minimum of -11°C (13°F) to a maximum of 20°C (68°F), with an average temperature of 7°C (46°F). The month sees considerable precipitation, totaling 134 mm (5.3 in) over 16 days, accompanied by humidity levels around 83%. In contrast, March experiences colder temperatures, with a minimum of -26°C (-14°F) and a maximum of 11°C (52°F), averaging at -3°C (27°F). While there is less precipitation at 92 mm (3.6 in) over the same number of days, humidity is slightly higher at 87%. For those interested in more detailed information about March in the region, refer to Davos weather in March.
September and April present contrasting weather patterns, showcasing the transition from summer to autumn and winter to spring, respectively. In September, temperatures range from a minimum of -11°C (13°F) to a comfortable maximum of 20°C (68°F), with an average of 7°C (46°F). The month experiences more precipitation, totaling 134 mm (5.3 in) over about 16 days, and high humidity at 83%. In contrast, April typically sees colder conditions, with temperatures dipping as low as -24°C (-11°F) and peaking at 15°C (59°F), averaging only 1°C (34°F). Precipitation in April is lower, at 87 mm (3.4 in) across 14 days, while humidity remains slightly elevated at 84%. For a closer look at what to expect, you can visit Davos weather in April. Overall, September offers milder and wetter conditions compared to the chillier and drier atmosphere of April.
When comparing the weather in September and May, both months exhibit relatively low temperatures, but September generally offers milder conditions. In September, the average temperature is around 7°C (46°F), with a maximum of 20°C (68°F), while May's average dips slightly to 5°C (41°F), peaking at 21°C (69°F). Rainfall is more frequent in May, with precipitation occurring on 23 days and totaling 161 mm (6.3 in), compared to September's 16 rainy days and 134 mm (5.3 in). Despite a higher average humidity of 83% in September, May maintains a close humidity level at 80%. For a detailed look at May weather in Davos, visit Davos weather in May.
September and June in Davos present distinct weather patterns that reflect the transition from summer to autumn. In September, temperatures range from a chilly -11°C (13°F) at night to a comfortable 20°C (68°F) during the day, with an average of 7°C (46°F). This month sees approximately 134 mm (5.3 in) of precipitation across 16 days, combined with a relatively high humidity of 83%. In contrast, June experiences milder conditions, with temperatures varying from -2°C (28°F) at night to a warm 26°C (79°F) in the daytime, averaging 10°C (51°F). The total precipitation in June is slightly higher at 147 mm (5.8 in) over 19 days, while humidity remains similar at 82%. For a detailed look at the weather conditions in June, you can check Davos weather in June.
September weather in Davos is generally cooler than July, with average temperatures ranging from a minimum of -11°C (13°F) to a maximum of 20°C (68°F), compared to July's milder range of 2°C (36°F) to 25°C (78°F). Both months experience significant precipitation, with September receiving 134 mm (5.3 in) over 16 days, while July has slightly more at 152 mm (6.0 in) over 20 days. Humidity levels remain consistent at 83% in both months, but the cooler September temperatures make it feel quite different. For more detailed information on July weather, you can visit Davos weather in July.
In September, the weather experiences a notable drop in temperatures compared to August, with minimums reaching -11°C (13°F) and averages around 7°C (46°F), while August enjoys milder temperatures, ranging from a minimum of 0°C (31°F) to an average of 11°C (52°F). September also sees less precipitation overall, totaling 134 mm (5.3 in) over 16 days, compared to August's higher total of 197 mm (7.8 in) across 20 days. Despite being slightly cooler, September has a higher average humidity at 83% compared to August's 80%. For further insights into August weather specifically, you can visit Davos weather in August.
In comparing the weather between September and October, both months experience chilly conditions, but with some notable differences. September features a range of temperatures, averaging around 7°C (46°F) with highs reaching 20°C (68°F), while October sees a drop in average temperature to 3°C (39°F) with maximums of 16°C (61°F). Precipitation levels are similar, with September receiving 134 mm over 16 days and October slightly less at 133 mm over just 12 days. Additionally, October tends to be more humid, with humidity levels rising to 90% compared to September's 83%. For more detailed information, you can check this link: Davos weather in October.
September is characterized by milder temperatures, with average highs of 20°C (68°F) and lows around -11°C (13°F), while November experiences significantly colder conditions, averaging around -3°C (27°F) and dipping down to a minimum of -21°C (-5°F). In terms of precipitation, September sees 134 mm (5.3 in) over 16 days, whereas November has slightly less at 103 mm (4.0 in) over 13 days. Moreover, humidity levels rise from 83% in September to 88% in November, contributing to a more pronounced chill. For more details on the weather specifics in this month, check Davos weather in November.
September and December present two distinct weather profiles. In September, temperatures range from a minimum of -11°C (13°F) to a maximum of 20°C (68°F), with an average of 7°C (46°F). The precipitation during this month is significant, totaling 134 mm (5.3 in) over 16 days, and humidity levels are relatively high at 83%. In contrast, December brings considerably colder conditions, with temperatures dropping to a minimum of -27°C (-17°F) and only reaching a maximum of 4°C (40°F), resulting in an average temperature of -7°C (19°F). Precipitation is slightly less in December at 129 mm (5.1 in) over the same number of days, but the humidity increases to 90%, creating a more intense winter atmosphere. For more detailed information about the specific weather conditions in December, you can refer to Davos weather in December.
As September unfolds in Davos, it marks a transition into the cooler embrace of autumn, setting it apart from the warmer summer months. With an average temperature dipping to a crisp 7°C, the days are notably cooler, while maximum temperatures rarely exceed a pleasant 20°C. This month also tends to experience increased precipitation, with about 134 mm falling over 16 rainy days, contributing to the lush landscapes. The 83% humidity adds a distinct chill to the air, further enhancing the brisk atmosphere. For a deeper dive into how these changes reflect on the region's climate, explore Davos Climate.