Last updated: August 27, 2025
In Dornach, Switzerland, September showcases a vibrant transition from summer to autumn, with maximum temperatures reaching a warm 30°C (86°F) and an average of 16°C (60°F). While the days can be pleasant, nighttime temperatures may dip to a cool 1°C (35°F), reminding residents of the approaching chill. The month brings about 67 mm (2.6 in) of rainfall across 10 days, contributing to the lush greenery that characterizes the region. With an average humidity of 81%, it's a time when the air feels refreshing yet slightly moist, perfect for exploring the scenic beauty of Dornach amid its changing seasons.
September in Dornach, Switzerland ushers in a delightful transition into autumn, characterized by mild temperatures and a hint of crispness in the air. With average temperatures hovering around 16°C (60°F), the month balances warmth and coolness, providing perfect conditions for outdoor exploration. The highs can reach up to 30°C (86°F), reminiscent of late summer days, while the lows dip to a refreshing 1°C (35°F), inviting cozy layers for the evening. As the leaves begin to change, September showcases a perfect blend of summer's warmth and autumn's charm, setting the stage for stunning landscapes and vibrant color palettes throughout the region.
September in Dornach, Switzerland, marks a subtle transition into autumn, characterized by a moderate precipitation level of 67 mm (2.6 in). This month experiences a notable decrease in both rainfall and rainy days, with just 10 days of precipitation, making it one of the driest months of the year. Following the lush, rain-soaked summer months of June and July, which brought significant rainfall of 125 mm (4.9 in) and 117 mm (4.6 in) respectively, September’s milder conditions invite a sense of calm. As the landscape prepares for the cooler months ahead, the reduced rainfall signals a shift, reflecting how the rhythm of nature transforms with the seasons in this picturesque Swiss locale.
In September, Dornach, Switzerland, experiences a noticeable shift in humidity as the summer draws to a close. With an average humidity of 81%, the month reflects a modest increase from the drier days of August, which boasted the year's lowest reading at 77%. This slight uptick indicates a welcomed return of moisture to the air, embracing the vibrant transition to autumn. As temperatures begin to cool, the humidity levels remain relatively stable compared to the preceding months, hinting at the more humid conditions that characterize the fall with a looming rise to 89% by October. Overall, September strikes a balance between the lingering warmth of summer and the impending crispness of autumn, nurturing a refreshing atmosphere in this charming Swiss locale.
In September, Dornach, Switzerland experiences a notable shift in the UV Index, which stands at 6, categorizing sun exposure as high with a burn time of 25 minutes. This marks a decline from the intense very high levels seen in summer months, where July and June both peaked at 9. As the warmth of summer transitions into the cooler autumn months, September still presents a significant risk for sunburn, making it crucial for outdoor enthusiasts to remain mindful of their sun protection strategies. With the UV Index reducing from summer highs, it is a good opportunity to enjoy the outdoors while taking appropriate precautions. For further details on UV Index trends, check out Dornach UV Index.
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In Dornach, Switzerland, September can be enjoyed as a vibrant transition into autumn, boasting 323 hours of sunshine. This marks a delightful dip from the sun-soaked July, which captures the year's peak at 413 hours, yet remains significantly warmer than the winter months. The gradual reduction in daylight, from a lively 361 hours in May to a cozy 265 hours in October, ensures a gentle shift in ambiance. Moreover, as summer fades, September's bright days serve as a lingering embrace of warmth before the crispness of autumn fully settles in, making it an enticing time to experience the quaint charm of Dornach under a golden sun.
In Dornach, Switzerland, September brings a moderate 43% chance of sunny weather, marking a notable increase from the summer months. This slight uptick reflects a pleasant transition from August, where the likelihood of sunshine hovers around 39%, indicating that as summer wanes, there is still ample opportunity to enjoy bright days. Although not the sunniest month overall, September stands out with a favorable outlook compared to the earlier chill of January, which offers only a 17% chance of sunshine. Overall, as autumn approaches, visitors to Dornach can anticipate a mix of sunny moments interspersed with the crispness of the season, making it an ideal time for outdoor exploration and enjoyment of the serene landscape.
As the seasons transition in Dornach, Switzerland, September brings a gentle decline in daylight, with the sun gracing the skies for 12 hours each day. This marks a shift from the peak of summer, where June through August basked in a generous 15 hours of daylight, gradually tapering off as autumn approaches. The month of September serves as a beautiful bridge, as the landscape begins to don its fall colors, reminding us of the fleeting brilliance of summer. Just a month later, daylight will retreat further to 10 hours in October, foreshadowing the shorter, cozier days of winter. This rhythmic ebb and flow of daylight not only reflects the passage of time but also enhances the charm of Dornach’s serene environment.
In September, the gentle winds of Dornach, Switzerland slow to an average speed of 1.7 m/s (4 mph), marking a continuation of the summer's calm. This drop from the breezy months of May and June, which boasted average speeds of 2.8 m/s (6 mph) and 1.8 m/s (4 mph) respectively, signals the transition into a more stable autumn atmosphere. The overall trend indicates that as summer fades, the winds become less vigorous, with only slightly stronger gusts returning in October. This serene backdrop allows the vibrant hues of the changing leaves to take center stage, captivating all who wander through this picturesque landscape.
Weather in Dornach varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Dornach, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinctly different weather patterns. In September, temperatures typically range from a cool 1°C (35°F) at night to a warm 30°C (86°F) during the day, with an average of 16°C (60°F). There is some rainfall, with 67 mm (2.6 in) recorded over about 10 days, and humidity averages around 81%, giving the month a mild and often pleasant feel. In contrast, January brings much colder temperatures, with lows plummeting to -13°C (8°F) and highs reaching only up to 16°C (61°F). The average temperature is a chilly 1°C (35°F), and precipitation increases to 94 mm (3.7 in) over 12 days, paired with heightened humidity levels of 91%. For a more detailed look at January's weather, you can refer to Dornach weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a chilly 1°C (35°F) at night to a warm 30°C (86°F) during the day, with an average of 16°C (60°F). This month experiences 67 mm (2.6 in) of precipitation over about 10 days, accompanied by a humidity level of 81%. In stark contrast, February is much colder, with temperatures dropping to a minimum of -14°C (7°F) and only reaching a maximum of 18°C (65°F), averaging just 4°C (39°F). This winter month sees slightly more precipitation at 77 mm (3.0 in) over 12 days, and a higher humidity of 89%. For a more in-depth look at the weather in February, you can visit Dornach weather in February.
September and March exhibit contrasting weather patterns. In September, temperatures range from a minimum of 1°C (35°F) to a maximum of 30°C (86°F), with an average of 16°C (60°F), creating a warm atmosphere as summer transitions to autumn. With 67 mm (2.6 in) of precipitation over about 10 days and humidity at 81%, the month can be quite pleasant despite occasional rain. In contrast, March experiences colder conditions, with temperatures dropping as low as -13°C (9°F) and peaking at 21°C (71°F), averaging around 6°C (43°F). This month is wetter, with 91 mm (3.6 in) of rain spread across approximately 15 days, along with slightly higher humidity at 87%. For more details on the weather during this period, you can refer to Dornach weather in March.
When comparing the weather in September and April, we see distinct differences in temperature and overall conditions. September boasts a broader temperature range, with minimums around 1°C (35°F) and maximums reaching up to 30°C (86°F), leading to an average of 16°C (60°F). In contrast, April has cooler temperatures, with minimums dipping to -4°C (25°F) and an average of 10°C (50°F), making it feel much chillier. Both months experience similar levels of precipitation, at 67 mm (2.6 in) for September and 62 mm (2.4 in) for April, with rainfall occurring over approximately 10 days in each month. Humidity levels are slightly higher in April at 84%, compared to 81% in September. For more detailed information, you can check Dornach weather in April.
When comparing the weather in September and May, one can observe notable differences in temperature and precipitation patterns. September boasts a wider temperature range, with minimums around 1°C (35°F) and occasional highs reaching up to 30°C (86°F), resulting in a comfortable average of 16°C (60°F). In contrast, May starts off a bit cooler, with minimum temperatures at 0°C (32°F) and an average of 13°C (56°F), while also flirting with similar highs of up to 30°C (87°F).
Precipitation levels also differ markedly; September receives about 67 mm (2.6 in) of rain over around 10 days, making it relatively drier compared to May, which experiences a higher precipitation rate of 133 mm (5.2 in) over approximately 17 days. The humidity remains fairly consistent between the two months, with September at 81% and May at 80%. For a detailed look at weather specifics in May, you can check Dornach weather in May.
When comparing the weather in September and June, we observe notable differences in temperature and precipitation. September boasts a wider temperature range, with minimums as low as 1°C (35°F) and maximums reaching 30°C (86°F). The average temperature of 16°C (60°F) reflects a transition into cooler autumn conditions, while the month sees about 67 mm (2.6 in) of precipitation over 10 rainy days and a humidity level of 81%.
In contrast, June experiences milder conditions, with minimum temperatures starting at 5°C (42°F) and maximums climbing up to 34°C (94°F). The average temperature of 19°C (66°F) indicates a warmer month, accompanied by increased precipitation of 125 mm (4.9 in) spread across 16 days, and slightly higher humidity at 82%. This makes June a wetter and generally warmer month compared to September, often characterized by the lush greenery of late spring and early summer. For more detailed insights, you can explore Dornach weather in June.
In comparing the weather of September and July, it’s clear that July tends to be hotter and more humid. With minimum temperatures starting at 8°C (47°F) and reaching up to 37°C (98°F), July boasts an average temperature of 20°C (68°F). In contrast, September experiences cooler temperatures, ranging from a minimum of 1°C (35°F) to a maximum of 30°C (86°F), with an average of 16°C (60°F). Additionally, July sees higher precipitation levels at 117 mm (4.6 in) across 14 days, compared to September's 67 mm (2.6 in) over 10 days. The humidity is slightly higher in July at 82%, while September holds steady at 81%. For more detailed information, you can check Dornach weather in July.
September weather shows a notable cooling compared to August, with minimum temperatures dropping to 1°C (35°F) compared to August's minimum of 6°C (43°F). The average temperature in September is 16°C (60°F), significantly lower than August's average of 20°C (68°F), and while September can reach a maximum of 30°C (86°F), August peaks higher at 35°C (95°F). Additionally, September tends to be wetter, with 67 mm (2.6 in) of precipitation over 10 days, compared to August's 115 mm (4.5 in) over 15 days. Though September has higher humidity at 81%, August still maintains a comfortable level at 77%. For a closer look at August weather patterns, you can check out Dornach weather in August.
September typically experiences warmer temperatures, with a minimum of 1°C and an average of 16°C, reaching highs of 30°C. The month sees around 67 mm of precipitation over approximately 10 days, accompanied by a humidity level of 81%. In contrast, October brings cooler temperatures, with a minimum dipping to -1°C and an average of 11°C, peaking at 24°C. Rainfall increases, totaling 92 mm over about 14 days, and humidity rises to 89%. For more detailed information, you can check Dornach weather in October.
In September, the weather is generally warmer, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 30°C (86°F), and an average of 16°C (60°F). The month sees around 67 mm (2.6 inches) of precipitation over approximately 10 days, with humidity levels averaging 81%. In contrast, November brings a notable drop in temperatures, with a minimum of -4°C (25°F) and an average of 5°C (41°F), peaking at 21°C (70°F). This month experiences slightly higher precipitation at 79 mm (3.1 inches) spread over 13 days, accompanied by increased humidity at 89%. The transition from the warmer September days to the chillier November air signifies a shift in the seasons. For more detailed weather information specific to November, you can check Dornach weather in November.
September and December present notably different weather conditions. In September, temperatures range from a low of 1°C (35°F) to a high of 30°C (86°F), with an average of 16°C (60°F), making it a much warmer month. Precipitation is relatively moderate at 67 mm (2.6 in) over about 10 days, while humidity sits at 81%. In contrast, December experiences much colder temperatures, with a minimum of -5°C (23°F) and an average of just 3°C (38°F), peaking at 14°C (57°F). The month sees significantly more precipitation at 129 mm (5.1 in), spread over 19 days, along with higher humidity at 91%. For more details, check out this link: Dornach weather in December.
As summer gives way to autumn, September in Dornach offers a unique shift in weather that stands apart from the hotter months. With a maximum temperature reaching 30°C, it still boasts pleasantly warm days, but the average drops to a cooler 16°C, providing a refreshing respite from the summer heat. The crisp mornings can dip as low as 1°C, creating a delightful contrast that signals the transition of the season. September also brings increased humidity and noteworthy precipitation, with about 10 days of rain contributing to the fresh, vibrant landscape. This blend of conditions enriches the charm of the month, making it a perfect time to experience Dornach. For more insights on the region's climate year-round, visit Dornach Climate.