Last updated: August 27, 2025
In September, Chamonix, Switzerland experiences a captivating transition from summer warmth to the crisp beginnings of autumn. With maximum temperatures reaching 24°C (76°F) and an average of 12°C (54°F), the month offers a delightful mix of pleasant days and cooler nights, where temperatures can dip to a brisk -1°C (30°F). While the weather can be unpredictable, as indicated by the 104 mm (4.1 in) of rainfall spread over 14 days, the 81% humidity adds a touch of misty enchantment to the landscapes. September in Champery is an ideal time for visitors to enjoy the stunning natural beauty and the subtle shifts in the scenery as fall approaches.
In September, Champery, Switzerland, experiences a delightful transition from the warmth of summer to the crispness of autumn. With a minimum temperature of -1°C (30°F) and a comfortable average of 12°C (54°F), this month serves as a gentle reminder of the cooler days ahead. The maximum temperature can reach a pleasant 24°C (76°F), making it an ideal time for outdoor activities amidst the breathtaking alpine scenery. As the month progresses, the temperatures begin to dip, signaling the retreat of summer while showcasing the stunning autumn colors that envelop the landscape. September strikes a perfect balance—a bridge between seasons, offering a unique charm that captivates both nature lovers and adventurers alike.
In September, Champery experiences a noticeable dip in precipitation, with an average of 104 mm (4.1 in) of rainfall over 14 days. This reduction follows the lush summer months of June and July, which saw higher totals of 219 mm (8.6 in) and 179 mm (7.1 in) respectively. The transition into September marks a shift towards drier weather, signaling the onset of autumn while still retaining some residual moisture from the late summer. As the month progresses, the contrast in precipitation is evident when compared to May, the wettest month, which recorded 210 mm (8.3 in) over 20 days. This gentle decline serves as a precursor to the more significant rainfall expected in the coming months, particularly December, which typically sees its peak at 223 mm (8.8 in).
In September, Champery experiences a slight uptick in humidity, averaging around 81%. This marks a subtle recovery from the drier summer months, signaling a transition as autumn approaches. Following the more temperate August, which had a lower humidity of 77%, September’s levels hint at the returning moisture typical of the region as temperatures begin to cool. This seasonal shift is part of a broader trend observed throughout the year, with the highest humidity recorded in the winter months—hovering around 91% in January and December—while summer enjoys a slight dip. Overall, September stands as a bridge, maintaining moderate humidity levels that prepare Champery for the cozy embrace of fall.
As September rolls into Champery, Switzerland, the UV Index brings a notable shift in conditions, registering a high level of 7, which suggests it's time to be cautious under the sun. This marks a slight decline from the peak summer months, where the Index reached 10 in June, signaling very high exposure levels. With a recommended burn time of 25 minutes, it's a fantastic opportunity to enjoy the beautiful early autumn scenery, yet still wise to practice sun safety. As days shorten and temperatures cool, the UV Index begins its gradual descent towards the moderate levels of October. For comprehensive insights into UV exposure throughout the year, check out Champery UV Index.
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As summer transitions to autumn, September in Champéry, Switzerland, welcomes a delightful retreat from the peak sun-soaked months of July and August, which boast impressive totals of 418 and 388 hours of sunshine respectively. While September dips to 330 hours, it still holds onto glimpses of warmth, promising pleasant days to explore the breathtaking alpine landscape. This month’s sunshine, although diminished from its summer zenith, still outshines the colder months ahead, like October's 288 hours and November's 229 hours. The gradual decline in daylight hours signals the shift toward shorter days and the enchanting charm of autumn, making September a perfect time for outdoor adventures amidst the vibrant fall foliage.
In Champery, Switzerland, September brings an interesting blend of transition as summer gives way to autumn, with a 38% chance of sunny weather. This figure sits slightly below the peak summer months of July and August, which boast 37% and 42% chances of sunshine, respectively. Notably, September's probability of clear skies is higher than May's 30%, signaling a gradual shift from the vibrant summer towards cooler fall days. As the region's weather patterns exhibit fluctuations through the months, September remains a viable option for those seeking a sunlit escape before winter blankets the mountains. Embrace the crisp air and milder temperatures, as this month still offers sun-drenched moments amid the changing foliage.
As September arrives in Champery, Switzerland, daylight begins to gradually wane, offering around 12 hours of sunlight—a subtle transition from the vibrant summer months. Following June and July’s peak of 15 hours, the days shorten, hinting at the cozy embrace of autumn. This month reflects a continuation of the longer days experienced in May and June, yet it marks the onset of shorter daylight patterns that will dominate the deeper months of fall and winter. The gradual decline in daylight highlights a rhythm of nature, where the cozy hues of autumn foliage become a backdrop to the dwindling sunshine, inviting a sense of tranquility as the landscape prepares for the colder season ahead.
As September settles in Champery, Switzerland, the air takes on a gentle serenity, with an average wind speed of only 1.2 m/s (3 mph). This marks one of the calmest months of the year, continuing a trend of decreasing winds that began in June. Following a relatively stable spring and summer, where wind speeds hovered around 1.4 to 1.6 m/s, September’s breeziness invites a peaceful ambiance, perfect for leisurely strolls through the picturesque landscapes. As the autumn chill approaches, September's subtler winds prepare the way for the brisk gusts of October and December, which will soon bring a notable increase in speed, reminding us of the dynamic shifts in nature.
Weather in Champery varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Champery, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January in Champery present starkly contrasting weather conditions. September typically features milder temperatures, with a minimum of -1°C (30°F) and an average of 12°C (54°F), peaking at a comfortable 24°C (76°F). The month experiences 104 mm (4.1 in) of precipitation spread over 14 days, alongside a humidity level of 81%. In contrast, January is much colder, with temperatures plunging to a minimum of -19°C (-2°F) and an average of -3°C (27°F), with a maximum reaching only 9°C (48°F). While January sees slightly higher precipitation at 124 mm (4.9 in), it occurs over fewer days (10), and the humidity increases to 91%. For more detailed information on January weather in Champery, please visit Champery weather in January.
In September, the weather typically presents a mild range of temperatures, with a minimum of -1°C (30°F) and an average of 12°C (54°F), peaking at a comfortable 24°C (76°F). This month experiences considerable rainfall, totaling 104 mm (4.1 inches) over approximately 14 days, alongside a humidity level of 81%. In contrast, February is significantly colder, with temperatures reaching a minimum of -18°C (0°F) and averaging around 0°C (32°F), while the maximum temperature only climbs to 15°C (59°F). February also has slightly higher precipitation at 113 mm (4.4 inches) over 11 days, combined with an even higher humidity of 89%. For more details, you can check Champery weather in February.
In September, the weather is generally milder with average temperatures around 12°C (54°F), while March experiences much colder conditions, averaging just 2°C (36°F). September also boasts a warmer maximum temperature of 24°C (76°F) compared to March's maximum of 17°C (63°F). Both months receive significant precipitation, with September totaling 104 mm (4.1 in) over approximately 14 days, while March sees an even heavier precipitation of 137 mm (5.4 in) across 15 days. Humidity levels are relatively high in both months, but slightly higher in March at 87% versus September's 81%. For detailed insights into what to expect during March, you can refer to Champery weather in March.
In September, the weather is generally milder, with average temperatures around 12°C (54°F), peaking at a comfortable 24°C (76°F), while experiencing a minimum of -1°C (30°F). In contrast, April tends to be cooler, with average temperatures of 6°C (43°F) and a minimum of -14°C (7°F), although it can reach a high of 21°C (69°F). Both months see a fair amount of precipitation, with September receiving 104 mm (4.1 in) over approximately 14 days, while April has slightly less at 85 mm (3.4 in) over 12 days. Additionally, humidity is similar, with September at 81% and April at 84%. For more detailed weather information, you can visit Champery weather in April.
When comparing the weather in September and May, several key differences emerge. September tends to be warmer overall, with an average temperature of 12°C (54°F) and a high reaching 24°C (76°F), while May averages slightly cooler at 10°C (50°F) with a maximum of 27°C (81°F). However, May experiences more frequent rain, with precipitation recorded on 20 days and a total of 210 mm (8.3 in), compared to September's 14 days of rain and 104 mm (4.1 in). Additionally, both months exhibit high humidity levels near 80%, but September's humidity is slightly higher at 81%. For more detailed information about weather conditions in May, you can check Champery weather in May.
In September, the weather sees a gradual cooling with temperatures ranging from a chilly -1°C (30°F) to a comfortable max of 24°C (76°F), resulting in an average temperature of 12°C (54°F). The month experiences moderate precipitation of 104 mm (4.1 in) over 14 days, accompanied by high humidity at 81%. In contrast, June is significantly warmer, with temperatures starting at a minimum of 2°C (36°F) and peaking at 30°C (87°F), leading to a higher average of 14°C (58°F). June also receives more rainfall, totaling 219 mm (8.6 in) across 18 days, while maintaining a similar humidity level of 82%. For more detailed insights, you can check out Champery weather in June.
In comparing the weather between September and July, notable differences emerge in both temperature and precipitation. September experiences cooler temperatures, with a minimum of -1°C (30°F) and an average of 12°C (54°F), while July boasts warmer conditions, starting from a minimum of 4°C (40°F) and reaching an average of 16°C (61°F). The maximum temperature in July can soar up to 30°C (86°F), significantly higher than September's peak of 24°C (76°F). In terms of rainfall, July sees a greater amount with 179 mm (7.1 in) over 16 days compared to September's 104 mm (4.1 in) across 14 days. Despite the slight increase in humidity in July at 82%, both months maintain high humidity levels, with September at 81%. For those curious about the specific weather details of July, you can find more information here: Champery weather in July.
September weather presents a notable shift compared to August, with cooler temperatures ranging from a minimum of -1°C (30°F) to a maximum of 24°C (76°F), while August enjoys warmer averages from a minimum of 4°C (40°F) to a high of 29°C (84°F). Precipitation also changes, with September receiving 104 mm (4.1 in) over 14 days, compared to August's wetter conditions, which bring 167 mm (6.6 in) across 15 days. Despite its higher humidity of 81%, September feels less oppressive than August's 77%, as the cooling temperatures signal the approach of autumn. For more details, you can check Champery weather in August.
In September, temperatures in Champery range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 24°C (76°F), with an average temperature of 12°C (54°F). The month experiences 104 mm (4.1 in) of precipitation over 14 days, accompanied by a humidity level of 81%. In contrast, October sees a decline in average temperatures, with a minimum of -7°C (19°F) and a maximum of 21°C (70°F), resulting in an average of 8°C (46°F). The month is slightly wetter, with 121 mm (4.8 in) of rainfall across 13 days, and increased humidity at 89%. For more detailed insights, check out Champery weather in October.
In comparing the weather between September and November, notable differences in temperature and conditions emerge. September generally presents milder temperatures, with a minimum of -1°C (30°F) and an average of 12°C (54°F), peaking at 24°C (76°F). This month experiences substantial rainfall, totaling 104 mm (4.1 in) across 14 days and maintaining a humidity level around 81%. In contrast, November brings a sharper chill, with temperatures dropping as low as -14°C (8°F) and averaging just 2°C (36°F), with a maximum of 18°C (65°F). Precipitation slightly increases to 109 mm (4.3 in), occurring over 12 days, and humidity rises to 89%. For more detailed insights into November weather, you can visit Champery weather in November.
In September, temperatures in Champery range from a brisk -1°C (30°F) to a pleasant 24°C (76°F), with an average of 12°C (54°F). The month sees around 104 mm (4.1 in) of precipitation over 14 days, while humidity levels hover at 81%. By contrast, December brings much colder weather, with temperatures plummeting to a minimum of -17°C (2°F) and reaching a maximum of 11°C (51°F), averaging around -2°C (29°F). Precipitation increases significantly to 223 mm (8.8 in) across 17 days, and humidity rises slightly to 91%. For more details on the winter climate, you can visit Champery weather in December.
As September rolls into Champery, the weather showcases a unique transition from the warmer summer months to the chillier fall season. While daytime temperatures can still reach a pleasant 24°C (76°F), evenings often dip as low as -1°C (30°F), inviting a cozy atmosphere that contrasts sharply with the relentless heat of July and August. The increased humidity, averaging around 81%, coupled with a notable 104 mm (4.1 in) of precipitation over 14 rainy days, adds to the lush, vibrant landscape characteristic of early autumn. This blend of warmth and moisture transforms Champery into a picturesque backdrop perfect for outdoor activities—making September a delightful time to experience the charm of the Swiss Alps. For a deeper dive into weather patterns throughout the year, visit Champery Climate.