Last updated: August 27, 2025
September in Zernez, Switzerland unveils a spectacular transition into autumn, with temperatures ranging from a brisk -12°C (10°F) to a pleasant 19°C (67°F), yielding an average of 6°C (44°F). The month is characterized by 16 days of precipitation, accumulating a total of 134 mm (5.3 in), which adds to the lush landscapes that surround this charming town. With a humidity level of 83%, the air carries a refreshing crispness, making it an ideal time for those seeking to experience the serene beauty of the Swiss Alps. Whether exploring hiking trails or enjoying local cuisine, visitors will find September to be a delightful blend of cool weather and stunning natural vistas.
As September arrives in Zernez, Switzerland, the temperatures begin to shift noticeably from the warmth of summer to the crispness of autumn. With minimums dipping to -12°C (10°F) and daytime averages hovering around 6°C (44°F), this month serves as a gentle reminder of the approaching colder months. The maximum temperature can still reach a pleasant 19°C (67°F), allowing for some enjoyable outdoor activities amidst the changing foliage. Compared to the summer highs of July and August, where temperatures peaked at 24°C (76°F) and 22°C (71°F) respectively, September offers a more refreshing climate, encouraging residents and visitors alike to embrace the beauty of nature as it transitions into fall. The gradual cooldown not only shapes the local landscape but also invites a sense of tranquility, perfect for those looking to explore Zernez's stunning surroundings.
In September, Zernez experiences a noticeable shift in precipitation patterns, with 134 mm (5.3 in) of rainfall spread across 16 days. This marks a decline from the heavy downpours of August, which recorded 194 mm (7.6 in), showcasing the transition towards the drier months ahead. The weather in September remains relatively moist, as it still ranks among the wetter months, particularly after a lush summer. This timing hints at a gradual tapering off of the abundant rainfall characteristic of the warmer months, setting the stage for the crisp autumn air. The ongoing precipitation serves as a reminder of the region's dynamic climate, making Zernez a captivating destination for those who appreciate the changing seasons.
In Zernez, Switzerland, humidity levels exhibit a distinct seasonal rhythm throughout the year. As summer transitions into autumn, September witnesses a modest rise in humidity, settling at around 83%. This slight uptick follows the somewhat drier late summer months of July and August, when humidity dipped to 83% and 80%, respectively. The transition hints at the approaching autumn chill, as humidity levels will increase again, peaking at 90% in both October and December. Overall, the trend illustrates not just the high humidity values characteristic of Zernez, but also the gentle ebb and flow as seasons change, with September striking a balance before the wetter months set in.
As September unfolds in Zernez, Switzerland, the UV Index drops to 7, indicating a high level of sun exposure, with a burn time of approximately 25 minutes for unprotected skin. This represents a slight decrease from the extreme levels of summer, where values peaked at 11 in both June and July. The trend of decreasing UV intensity continues into October, where the index further declines to 6. This transitional period showcases a noticeable shift from the intense sun exposure of the previous months, making it a perfect time for outdoor activities while still being mindful of the sun's rays. For more detailed information on UV levels throughout the year, visit the Zernez UV Index.
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As summer draws to a close in Zernez, Switzerland, September ushers in a gentle transition with 311 hours of sunshine, hinting at the gradual retreat of longer, sun-drenched days. Following the heights of July and June, which boasted over 400 hours of bright skies, September maintains a respectable glow, although it falls short compared to the peak summer months. The reduction in sunlight mirrors the changing seasons, as the lush landscapes prepare for autumn's embrace. With daylight gradually waning, this month serves as a beautiful bridge, offering a blend of warmth and crispness that invites both reflection and exploration in the breathtaking Swiss Alps.
In Zernez, Switzerland, September brings a 32% chance of sunny weather, a trend that remains relatively steady compared to the summer months. Following the peak sunshine of June and July, the probability of clear skies dips slightly but still offers a fair chance of bright days. As the year transitions into autumn, this month retains a favorable balance of sun, harmonizing with the cooling temperatures and colorful foliage. Overall, while September may not boast the highest sunlit probabilities, it continues to provide pleasant opportunities for outdoor adventures amidst stunning alpine scenery.
In Zernez, Switzerland, the transition from summer to autumn is marked by a gradual decline in daylight duration throughout September. After enjoying a lengthy 15 hours of daylight during the peak summer months of June, July, and early August, the days start to shorten, with September offering a still-generous 12 hours of natural light. This change signifies the onset of autumn, leading to a progressive decrease as the year moves toward the winter months, where daylight dwindles to just 8 hours by December. The ebbing of daylight reminds us of nature's cyclical patterns and the approaching cozy embrace of winter, while the crisp September air invites outdoor explorations under the soft glow of the early twilight.
As the warm embrace of summer fades away, September in Zernez, Switzerland, is marked by a gentle decline in average wind speeds, dropping to 1.3 m/s (3 mph). This slight decrease is part of a broader trend observed throughout the year, where wind conditions are generally milder and less variable during the late summer and fall months. For instance, the average winds peaked slightly in May and June at 1.7 m/s (4 mph), providing a refreshing backdrop to the lush landscapes. Following this peak, wind speeds gradually tapered off, creating a serene atmosphere that complements the stunning autumnal scenery. As September unfolds, the soft, whispering winds invite visitors to enjoy the tranquil beauty of the surrounding nature, setting the stage for the vibrant fall colors that soon follow.
Weather in Zernez varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Zernez, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions, highlighting the transition from late summer to mid-winter. In September, temperatures range from a minimum of -12°C (10°F) to a comfortable average of 6°C (44°F) and a maximum of 19°C (67°F), with an average humidity of 83% and significant precipitation of 134 mm (5.3 in) over 16 days. In contrast, January features much colder conditions, with temperatures plummeting to a minimum of -31°C (-23°F) and an average of -10°C (14°F), peaking at just 5°C (41°F). During this month, precipitation decreases to 97 mm (3.8 in) across 11 days, accompanied by a higher humidity of 92%. For more detailed insights, you can refer to Zernez weather in January.
September and February present stark contrasts in weather. In September, the temperatures range from a chilly -12°C (10°F) at night to a pleasant 19°C (67°F) during the day, with an average of 6°C (44°F). The month sees considerable precipitation, totaling 134 mm (5.3 in) over 16 days, and humidity levels hovering around 83%. In contrast, February is much colder, with temperatures dropping to a minimum of -28°C (-18°F) and averages around -7°C (19°F), only reaching a maximum of 6°C (44°F). Although February experiences less precipitation, at 66 mm (2.6 in) over 11 days, the humidity is slightly higher at 89%. For a closer look at February weather specifics, visit Zernez weather in February.
September and March present contrasting weather conditions. In September, temperatures range from a minimum of -12°C (10°F) to a maximum of 19°C (67°F), with an average of 6°C (44°F). The month experiences significant precipitation, totaling 134 mm (5.3 in) across 16 days, and humidity levels are high at 83%. Conversely, March is colder, with temperatures dipping to a minimum of -26°C (-14°F) and reaching a maximum of 9°C (48°F), resulting in an average temperature of -4°C (24°F). Precipitation is lower in March at 93 mm (3.7 in), also occurring over 16 days, and humidity is slightly higher at 87%. For those interested in a closer look at Zernez's conditions this time of year, you can find more information here: Zernez weather in March.
September and April present distinctly different weather conditions. In September, temperatures start to warm up, with averages around 6°C (44°F) and highs reaching 19°C (67°F), while experiencing significant precipitation of 134 mm (5.3 in) over 16 days. This month has a relatively high humidity level of 83%. In contrast, April is cooler, with average temperatures around 0°C (32°F) and highs peaking at 14°C (57°F). It receives less precipitation, totaling 80 mm (3.2 in) over 12 days, and maintains a slightly higher humidity level of 84%. For a more detailed overview of April weather, check out Zernez weather in April.
September and May present contrasting weather experiences despite similar maximum temperatures. In September, the average temperature is slightly warmer at 6°C (44°F), while May records a slightly lower average of 4°C (39°F). Interestingly, both months share the same maximum temperature of 19°C (67°F). However, September tends to be wetter with 134 mm (5.3 in) of precipitation across 16 days compared to May's 161 mm (6.3 in) across 22 days. Humidity levels are also comparable, with September at 83% and May somewhat lower at 80%. For those interested in more details, check out Zernez weather in May.
When comparing the weather in September and June, there are notable differences in temperature and precipitation patterns. September experiences cooler temperatures, with a minimum of -12°C (10°F) and an average of 6°C (44°F), peaking at 19°C (67°F). In contrast, June has milder conditions, with temperatures ranging from a minimum of -3°C (26°F) and averaging 10°C (50°F) to a maximum of 25°C (77°F). While September sees 134 mm (5.3 in) of precipitation over 16 days, June has slightly higher precipitation at 141 mm (5.5 in) across 20 days. Humidity levels remain similar, at 83% in September and 82% in June. For more specific insights into June weather, you can check Zernez weather in June.
In comparing the weather between July and September, we see notable differences in temperature and precipitation patterns. July tends to be warmer, with average temperatures ranging from a minimum of 1°C (33°F) to a maximum of 24°C (76°F), whereas September experiences cooler conditions, with temperatures dipping from a minimum of -12°C (10°F) to a maximum of 19°C (67°F). Additionally, although July receives slightly more precipitation at 158 mm (6.2 in) over 21 days compared to September's 134 mm (5.3 in) over 16 days, both months share the same humidity level of 83%. For more detailed insights, you can check Zernez weather in July.
In comparing the weather between September and August, September experiences cooler temperatures, with a minimum of -12°C (10°F), an average of 6°C (44°F), and a maximum of 19°C (67°F). In contrast, August is milder, featuring temperatures that range from a minimum of -1°C (30°F) up to a maximum of 22°C (71°F) and an average of 10°C (51°F). Additionally, September sees a higher precipitation level of 134 mm (5.3 in) over 16 days, while August has greater total rainfall at 194 mm (7.6 in) across 21 days. The humidity levels remain relatively similar, at 83% for September and 80% for August. For more specifics on August conditions, you can check out Zernez weather in August.
September and October present a notable transition in weather conditions. In September, temperatures range from a minimum of -12°C (10°F) to a maximum of 19°C (67°F), with an average of 6°C (44°F). The month sees about 134 mm (5.3 in) of precipitation over 16 days, accompanied by a humidity level of 83%. In contrast, October tends to be colder, with temperatures dropping slightly to a minimum of -13°C (8°F) and a maximum of 15°C (59°F), averaging around 2°C (37°F). Precipitation remains relatively consistent at 126 mm (5.0 in) over 12 days, but humidity increases to 90%. For those interested in more detailed weather information, you can check out Zernez weather in October.
September and November exhibit notable differences in weather patterns. In September, temperatures range from a minimum of -12°C (10°F) to a maximum of 19°C (67°F), bringing an average of 6°C (44°F). The month experiences 134 mm (5.3 in) of precipitation over 16 days, with a humidity level of 83%. In contrast, November is significantly colder, with temperatures dipping to -23°C (-9°F) at night and peaking at 11°C (52°F), averaging -4°C (24°F). November sees slightly less precipitation at 102 mm (4.0 in) over 13 days and a higher humidity of 88%. For a detailed look at weather specifics, visit Zernez weather in November.
In September, temperatures start to cool down but remain relatively mild, with averages around 6°C (44°F) and a maximum of 19°C (67°F). The month experiences a decent amount of precipitation, totaling 134 mm (5.3 in) over 16 days, accompanied by a humidity level of 83%. In contrast, December plunges into winter, bringing much colder temperatures with a minimum of -27°C (-16°F) and an average of -9°C (17°F). Although precipitation slightly decreases to 132 mm (5.2 in) over the same number of days, humidity rises to 90%, contributing to the cold and damp atmosphere. For a more detailed look at December weather, check out Zernez weather in December.
As September unfolds in Zernez, it brings a striking transition from the warmth of summer to the crispness of autumn. Temperatures cool significantly, averaging around 6°C, and the chance of frosty mornings becomes a reality, with lows occasionally dipping to -12°C. This month stands out with an increase in precipitation, as rain graces the landscape on about 16 days, contributing to a lush, vibrant scenery. The high humidity of 83% accentuates the fresh, invigorating air typical of early fall, creating a unique atmosphere that separates September from the preceding months. For a deeper dive into the region's weather patterns, visit Zernez Climate.