Last updated: August 27, 2025
In Montreux, Switzerland, September brings a pleasant blend of mild temperatures and scenic beauty. The maximum temperature can reach a comfortable 26°C (78°F), while the average hovers around 13°C (56°F), making it ideal for outdoor explorations. However, as the month progresses, temperatures may dip to a cooler 1°C (34°F) at night. September also sees about 100 mm (3.9 in) of rainfall spread over 13 days, contributing to the region's lush landscapes. With an average humidity level of 81%, visitors can expect a refreshing, albeit slightly damp, atmosphere as the vibrant fall season begins to unfold.
In September, Montreux transitions gracefully from the warmth of summer to the refreshing hints of autumn. The temperatures showcase this shift, with daily lows averaging around 1°C (34°F), while daytime highs can reach up to a pleasant 26°C (78°F). This month enjoys an average temperature of 13°C (56°F), striking a perfect balance that invites both locals and tourists to explore the stunning lakeside views and picturesque vineyards. As the air turns crisper yet remains inviting, September becomes a delightful time to experience Montreux’s beauty, making it an ideal month for outdoor activities and relaxation amidst the changing foliage.
In September, Montreux experiences a shift towards the wetter months, with precipitation averaging 100 mm (3.9 in) over 13 days. This marks a noticeable decrease compared to the summer's peak, yet still contributes to the lush landscapes surrounding Lake Geneva. The previous month saw a higher total of 152 mm, highlighting the transition as the region prepares for autumn's arrival. As the year progresses, September's rainfall indicates a gradual but certain increase leading into the wetter months of October and December, which consistently bring heavier precipitation.
In September, Montreux experiences a shift in humidity as the summer fades, with levels settling at 81%. This marks a slight increase from the drier days of August, which boasted a comfortable 77% humidity. As the city transitions into autumn, humidity levels begin to rise again, echoing the patterns of the earlier months. The trend shows that while Montreux enjoys relatively lower humidity during the peak summer season, the fall brings a restorative return to the higher averages seen in the winter months. Overall, September offers a gentle blend of warmth and moisture, making it an ideal time to enjoy the breathtaking scenery along the shores of Lake Geneva.
As September unfolds in Montreux, Switzerland, the UV Index reflects a noteworthy decline from the peak summer months, settling at 7, which falls under the high exposure category. This indicates that while sunbathers can still enjoy the warm early autumn sun, they should remain cautious, as 25 minutes of unprotected exposure may lead to skin burns. Compared to earlier months, this slight reduction in UV levels marks a transition from the very high readings of summer, yet it's essential to maintain sun protection habits. As the days grow shorter and cooler, September's UV Index serves as a reminder that UV rays can still pose a risk. For more details on UV levels throughout the year, check out Montreux UV Index.
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September in Montreux, Switzerland, embraces a delightful blend of lingering summer warmth and the early hints of autumn, offering 330 hours of sunshine. This month brings a charming transition, as daylight gently wanes from the sun-drenched heights of July's 418 hours and August's 388 hours. As the days grow shorter, September still offers a generous amount of sunshine, outshining October's 288 hours and November's 229 hours. Visitors can revel in the beautiful light that bathes the stunning landscapes and vibrant lakeside views, making it a perfect time to enjoy the picturesque scenery before the crisp chill of winter arrives. The consistent upward trend in sunshine hours from January to July peaks mid-summer, creating a sunny backdrop for outdoor exploration and cultural experiences, while September gracefully holds on to those summer vibes just a little longer.
In September, Montreux, Switzerland, enjoys a 37% chance of sunny weather, which aligns closely with the trend of inconsistent sunshine experienced throughout the summer months. While July and August see a slight uptick in chances, the sunny disposition remains somewhat stable as summer transitions into autumn. Interestingly, this percentage ties with October, suggesting that September's weather can still provide pleasant, sun-drenched days, making it an ideal time for outdoor activities along the stunning shores of Lake Geneva. However, as the days grow shorter, those in search of brilliant sunshine should keep in mind that the area typically experiences variable weather during this transitional season.
In September, Montreux, Switzerland experiences a gentle transition as daylight dwindles to 12 hours. Following the vibrant, sun-soaked summer months of June, July, and August, which each boasted a maximum of 15 hours of daylight, September marks the beginning of a gradual decline. This monthly shift hints at the impending autumn, contrasting sharply with the extended daylight of spring, where April celebrates 13 hours of bright sunshine. The adjustment from summer's golden glow to the soft embrace of autumnal light sets a picturesque backdrop for the enchanting landscapes of Montreux, inviting visitors to relish the beauty of early fall. As the days shorten, the rhythm of nature subtly shifts, reminding us of the seasonal cycle that defines this stunning Swiss locale.
As summer wanes and September unfolds in Montreux, Switzerland, the gentle whispers of the wind begin to shift. With an average wind speed of 1.2 m/s (3 mph), September marks the season's calmest breath, a subtle reminder of the approaching autumn. This tranquil lull follows a slight rise in wind speeds through the summer months, where July and August saw a modest increase to 1.4 m/s (3 mph) and 1.5 m/s (3 mph) respectively. As the year transitions into fall, the winds signal a changing atmosphere, leading into the more invigorating breezes of October, which return to 1.6 m/s (4 mph). Collectively, this pattern showcases a gentle ebb and flow, harmonizing nature's rhythm as Montreux prepares for the vibrant colors and cooler air of autumn.
Weather in Montreux varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Montreux, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather. In September, temperatures range from a mild 1°C (34°F) at night to a warm 26°C (78°F) during the day, with an average of 13°C (56°F). The month sees around 100 mm (3.9 in) of precipitation across 13 days, accompanied by a humidity level of 81%. In comparison, January is much colder, with temperatures dipping as low as -17°C (1°F) and averaging -2°C (29°F), while reaching a maximum of 10°C (51°F). The precipitation increases to 132 mm (5.2 in) over 11 days in January, coupled with a higher humidity of 91%. To learn more about the specific weather conditions in January, you can visit Montreux weather in January.
September and February present contrasting weather patterns, making each month unique. September typically enjoys a milder climate with average temperatures ranging from 1°C (34°F) to a pleasant 26°C (78°F), accompanied by relatively high humidity at 81%. In contrast, February experiences much colder conditions, with average temperatures hovering around 1°C (34°F) but dipping to as low as -15°C (4°F). Precipitation is somewhat similar in both months, with September recording 100 mm (3.9 in) over 13 days and February slightly higher at 106 mm (4.2 in) over 11 days. For more details about February weather, you can refer to Montreux weather in February.
September and March present a stark contrast in weather patterns. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 26°C (78°F), with an average of 13°C (56°F). Humidity levels are relatively high at 81%, and the month sees 100 mm (3.9 in) of precipitation over about 13 days. In contrast, March features a colder climate, with temperatures dropping to a minimum of -16°C (4°F) and peaking at 18°C (65°F), averaging just 3°C (38°F). The month is slightly wetter, with 135 mm (5.3 in) of precipitation over 15 days and even higher humidity at 87%. For more detailed information on the weather in March, you can visit Montreux weather in March.
September and April showcase distinct weather patterns, reflective of their transitional seasons. In September, temperatures typically range from a chilly 1°C (34°F) at night to a warm 26°C (78°F) during the day, with an average of 13°C (56°F). This month sees about 100 mm (3.9 in) of precipitation over approximately 13 days, accompanied by a high humidity level of 81%. In contrast, April experiences colder temperatures with a minimum of -12°C (10°F) and a maximum of 22°C (72°F), averaging at 7°C (45°F). It brings slightly less precipitation at 76 mm (3.0 in) over 12 days, and a humidity level of 84% that can make the air feel even colder. For more specifics on April weather, you can visit Montreux weather in April.
When comparing the weather in September and May, we see distinct differences in temperature and precipitation patterns. In September, temperatures range from a minimum of 1°C (34°F) to a comfortable maximum of 26°C (78°F), with an average temperature of 13°C (56°F) and about 100 mm (3.9 in) of rain over 13 days. In contrast, May experiences cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 27°C (81°F), averaging at 11°C (51°F), but it tends to be wetter, receiving around 182 mm (7.2 in) of rain over 19 days. Both months have similar humidity levels, with September at 81% and May slightly lower at 80%. For more details on May weather, you can check out Montreux weather in May.
When comparing the weather in September and June, a few notable differences emerge. September typically sees temperatures ranging from a minimum of 1°C (34°F) to a maximum of 26°C (78°F), with an average of 13°C (56°F). In contrast, June offers warmer conditions, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 32°C (89°F), averaging 16°C (60°F). Rainfall is also more significant in June, totaling 159 mm (6.3 in) over 18 days, compared to September's 100 mm (3.9 in) across 13 days. Humidity levels are fairly close, with September at 81% and June slightly higher at 82%. For more specific details about the weather, you can check Montreux weather in June.
When comparing the weather in September and July, we see distinct differences in temperature and precipitation patterns. September experiences cooler temperatures, with a minimum of 1°C (34°F) and an average of 13°C (56°F), peaking at 26°C (78°F). In contrast, July boasts milder conditions, with temperatures ranging from a minimum of 6°C (44°F) to an average of 17°C (63°F) and reaching a maximum of 32°C (90°F). Precipitation also varies, with September receiving 100 mm (3.9 in) over 13 days, while July sees more rain at 165 mm (6.5 in) across 16 days. Both months have high humidity levels, with September at 81% and July slightly higher at 82%. For more detailed insights, you can check out Montreux weather in July.
In comparing the weather between August and September, it is evident that September experiences cooler temperatures, with a minimum of 1°C (34°F) and an average of 13°C (56°F) compared to August's warmer minimum of 6°C (43°F) and average of 17°C (62°F). August also boasts higher maximum temperatures, reaching 30°C (86°F) compared to September's peak of 26°C (78°F). Furthermore, September sees more frequent rainfall, with precipitation occurring on 13 days and totaling 100 mm (3.9 in), while August has slightly more precipitation on 15 days at 152 mm (6.0 in). However, September has a higher humidity level at 81% compared to August's 77%. For more details on August weather specifically, you can visit Montreux weather in August.
September typically showcases warmer temperatures, with an average of 13°C (56°F) and a maximum of 26°C (78°F), while October experiences a notable drop, averaging 9°C (48°F) and peaking at 22°C (72°F). Both months share a similar number of days with precipitation (13 days), but October tends to be slightly wetter, receiving 120 mm (4.7 in) of rain compared to September's 100 mm (3.9 in). Additionally, October has higher humidity, averaging 89% versus September's 81%. For more specific conditions, you can check Montreux weather in October.
In September, temperatures range from a chilly minimum of 1°C (34°F) to a comfortable maximum of 26°C (78°F), with an average of 13°C (56°F). This month experiences 100 mm (3.9 in) of precipitation over about 13 days, and humidity sits at 81%. In contrast, November brings a more significant drop in temperatures, with minimums plunging to -8°C (17°F) and a stark average of 4°C (39°F), though it can still reach a maximum of 18°C (64°F). Precipitation slightly increases to 106 mm (4.2 in) over the same number of rainy days, and humidity rises to 89%. For a detailed view of weather conditions, check Montreux weather in November.
In September, the weather features a comfortable temperature range with a minimum of 1°C (34°F) and a pleasant average of 13°C (56°F), peaking at 26°C (78°F). The month sees around 100 mm (3.9 inches) of precipitation over 13 days, accompanied by a humidity level of 81%. In contrast, December is much colder, with temperatures dropping significantly to a minimum of -16°C (3°F), averaging around 0°C (32°F), and reaching a maximum of 11°C (52°F). This month experiences increased precipitation at 208 mm (8.2 inches) over 18 days, with humidity rising to 91%. For more details on December weather, you can visit Montreux weather in December.
September in Montreux offers a unique transition from the warm summer months to the cooler embrace of autumn. With an average temperature that hovers around a crisp 13°C, visitors will experience refreshing days that can still boast a maximum peak of 26°C. However, as the month progresses, cooler nights set in, reminding us that winter is approaching. Rainfall becomes more frequent, with about 13 days of precipitation, contributing to the region’s lush greenery, while the humidity levels rise to 81%, adding a refreshing feel to the air. This blend of mild temperatures and occasional showers creates a picturesque setting perfect for exploring the natural beauty of Montreux. For a more in-depth look at the weather patterns throughout the year, check out Montreux Climate.