Last updated: August 27, 2025
September in Vitznau, Switzerland presents a delightful blend of seasonal transition, with temperatures ranging from a pleasant maximum of 25°C (77°F) to a cool minimum of 1°C (34°F). The average temperature hovers around 13°C (56°F), making it an ideal time for outdoor exploration. This month also brings 146 mm (5.8 in) of precipitation over approximately 15 days, contributing to lush landscapes and vibrant autumn colors. With humidity levels at a moderate 83%, visitors can expect a crisp yet refreshing atmosphere, perfect for enjoying the stunning natural beauty of this picturesque lakeside village.
As September unfolds in Vitznau, Switzerland, temperatures transition into the heart of autumn with a refreshing chill in the air. The month opens with a cool minimum of 1°C (34°F), offering a stark contrast to the warmer summer months, yet it gradually warms up to an inviting maximum of 25°C (77°F). This significant range highlights an average of 13°C (56°F), signaling the shift from the sun-kissed days of summer to the crisp serenity of fall. While the weather is still pleasant enough for outdoor adventures, the cooler nights invite cozier evenings and the breathtaking transformation of the landscape as leaves begin to change. September in Vitznau presents a perfect blend of mild days and cool nights, making it an ideal time for visitors to enjoy both the stunning scenery and the warmhearted local culture.
September in Vitznau, Switzerland, sees a moderate precipitation amount of 146 mm (5.8 in), falling within the realm of the wetter months following a notably rainy August. With 15 rainy days, this month maintains a balance, showing a slight dip in both rainfall and rainy days compared to the previous month, which had a substantial 203 mm of precipitation over 18 days. This trend suggests a gradual transition into autumn, where the showers become less frequent but still substantial enough to nourish the lush Swiss landscapes. As the region shifts towards October, an increase in rainfall is anticipated, moving towards the wetter autumn months, indicative of Vitznau’s characteristic climate patterns.
In September, Vitznau, Switzerland, experiences a humidity level of 83%, which reflects a slight increase from the summer months. This transitional period marks the end of the warm season, as humidity remains relatively steady compared to August's 80%. The trend throughout the year shows a gradual rise in humidity from the dry spring months, peaking during the colder winter months with levels soaring back to 90% in both October and December. As autumn sets in, residents and visitors can expect that the lush landscapes will thrive in this humid environment, providing a vibrant backdrop to the stunning Swiss scenery.
In September, Vitznau, Switzerland experiences a noticeable decline in UV intensity compared to the peak summer months. The UV Index settles at 6, categorizing exposure as high, with a burn time of around 25 minutes. This marks a shift from the exceptionally high levels observed in July and August, where conditions frequently reached an index of 9. As autumn approaches, sun-seekers should remain vigilant, as the risk of sunburn persists, albeit at a lower intensity. For those planning outdoor activities, it's essential to stay informed about the UV index to ensure safe sun exposure. For more details, visit Vitznau UV Index.
UV Risk Categories
Nestled on the shores of Lake Lucerne, Vitznau basks in a beautiful transition into autumn during September, where it enjoys an impressive 320 hours of sunshine. As summer peaks with July's sunlight totaling 415 hours, the days gradually begin to shorten, yet September still offers a generous amount of sunshine, outshining the chillier months that follow. After July, which boasts the highest sunshine hours, September maintains a respectable luminosity as it dips into October's 279 hours. This trend highlights how Vitznau transitions gracefully from the vibrant energy of summer into the quieter hues of autumn, making it an enchanting destination for those looking to savor the lingering warmth of the sun.
In Vitznau, Switzerland, the month of September brings a 34% chance of sunny weather, marking a slight improvement over the summer months, where the sun's presence hovered around 30%. As the year transitions into autumn, the likelihood of sunshine remains surprisingly steady compared to earlier months; notably, April offers the best chance of sun at 44%. Although September does not reach those heights, it does outperform several cooler months, such as January and November, emphasizing a lingering warmth as summer fades. This balance of sunshine and cooler temperatures makes September an appealing time to enjoy the breathtaking landscapes of Vitznau.
As summer gracefully transitions into autumn, September in Vitznau, Switzerland offers a gentle decline in daylight hours, with an average of 12 hours illuminating the day. Following the sun-drenched months of May through August, where daylight peaks at 15 hours, September serves as a reminder of the impending seasonal changes. The gradual decrease in sunlight reflects a broader trend, as daylight hours diminish from the vibrant 15 hours of summer, down to 10 hours in October. This steady transition not only marks the shift in seasons but also invites residents and visitors alike to savor the lingering warmth of late summer while preparing for the cozy embrace of autumn’s shorter days.
As summer gracefully transitions into autumn, the September winds in Vitznau, Switzerland, continue a gentle trend observed throughout the year. With an average wind speed of 1.2 m/s (3 mph), September shares a calmness similar to the preceding months of August and July, where breezes are soft and soothing. This consistency reflects a broader pattern, where the winds remain relatively light during the warmer months, only slightly increasing in the cooler autumn and winter. As nature prepares for the vibrant colors of fall, the mild September winds invite visitors and locals alike to embrace the tranquil beauty of Vitznau, making it a perfect time for leisurely strolls along the stunning shores of Lake Lucerne.
Weather in Vitznau varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Vitznau, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather, showcasing the transition from late summer to winter. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 25°C (77°F), with an average of 13°C (56°F). The month sees about 146 mm (5.8 in) of precipitation over 15 days and maintains a humidity level of 83%. In contrast, January features much colder conditions, with temperatures dipping as low as -15°C (5°F) and averaging around -1°C (30°F), reaching a maximum of 11°C (52°F). Precipitation levels are similar, at 144 mm (5.7 in), but occur over just 13 days, coupled with higher humidity at 92%. For more detailed insights into January's weather, you can check the following link: Vitznau weather in January.
September and February showcase stark differences in weather conditions. In September, temperatures range from a minimum of 1°C (34°F) to a comfortable maximum of 25°C (77°F), averaging around 13°C (56°F) with a substantial 146 mm (5.8 in) of precipitation over about 15 days. The humidity sits at a relatively high 83%, contributing to a generally mild atmosphere.
In contrast, February experiences much colder conditions, with temperatures plummeting to a minimum of -19°C (-1°F) and only reaching a maximum of 14°C (58°F), while averaging just 1°C (34°F). Precipitation is lower at 106 mm (4.2 in) over approximately 12 days, but the humidity is slightly higher at 89%, adding to the crisp and chilly winter environment. For more specific insights into February weather in the region, you can view Vitznau weather in February.
In September, the weather is generally milder, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 25°C (77°F) and an average of 13°C (56°F). The month experiences a fairly high level of humidity at 83% and receives about 146 mm (5.8 in) of precipitation over 15 days. In contrast, March is significantly colder, with temperatures dipping as low as -15°C (6°F) and averaging around 3°C (38°F), reaching a maximum of 18°C (64°F). Although it is slightly less rainy, March sees precipitation for 17 days totaling 127 mm (5.0 in) and has a humidity level of 87%. For a more detailed look at the weather in March, check out Vitznau weather in March.
When comparing the weather in September and April, we observe notable differences in temperature and precipitation levels. September boasts a broader temperature range, with a minimum of 1°C (34°F) and a maximum of 25°C (77°F), resulting in an average of 13°C (56°F). In contrast, April experiences cooler temperatures, with a minimum of -7°C (19°F) and an average of 7°C (45°F), peaking at 22°C (71°F).
While precipitation is fairly substantial in both months, September sees about 146 mm (5.8 in) over 15 days, compared to April’s 104 mm (4.1 in) over 12 days. Humidity remains relatively high in both months, with September at 83% and April slightly higher at 84%. For a closer look at April's weather specifics, you can check Vitznau weather in April.
When comparing the weather in September and May, we can see distinct differences in temperature and precipitation. September typically experiences a milder temperature range, with a minimum of 1°C (34°F), an average of 13°C (56°F), and a maximum of 25°C (77°F). In contrast, May usually starts with a colder minimum of -7°C (19°F), but it can warm up to a maximum of 27°C (80°F) on average.
Rainfall is more frequent in May, with 163 mm (6.4 in) over 19 days, compared to September's 146 mm (5.8 in) over 15 days. Additionally, humidity levels are slightly higher in September at 83% compared to May's 80%. For those interested in detailed weather conditions, you can check Vitznau weather in May.
September and June exhibit notable differences in weather patterns. In June, temperatures range from a minimum of 4°C (39°F) to a maximum of 31°C (88°F), with an average temperature of 16°C (60°F). In contrast, September experiences cooler temperatures, with lows of 1°C (34°F) and highs reaching 25°C (77°F), averaging around 13°C (56°F). Additionally, June sees more precipitation, totaling 189 mm (7.4 in) over 18 days compared to September's 146 mm (5.8 in) over 15 days. Both months feature high humidity levels, with September slightly higher at 83% compared to June's 82%. For more details on June weather, check out Vitznau weather in June.
In comparing the weather between September and July, September presents a cooler climate with a minimum temperature of 1°C (34°F) and an average of 13°C (56°F), while July enjoys warmer conditions, featuring a minimum of 7°C (45°F) and an average of 17°C (63°F). July also sees higher maximum temperatures, peaking at 31°C (87°F), compared to September’s max of 25°C (77°F). Precipitation is significant in both months, with July receiving 190 mm (7.5 in) over 18 days and September seeing 146 mm (5.8 in) over 15 days. Notably, both months share the same humidity level of 83%. For a more detailed look at July weather, you can explore Vitznau weather in July.
In comparing the weather of September and August, September experiences cooler temperatures with a minimum of 1°C (34°F) and an average of 13°C (56°F), while August sees milder conditions with a minimum of 7°C (45°F) and an average of 17°C (63°F). Additionally, August typically reaches higher maximum temperatures, peaking at 29°C (84°F) compared to September's peak of 25°C (77°F). Precipitation is also noticeably higher in August, with 203 mm (8.0 in) recorded over 18 days, while September experiences 146 mm (5.8 in) across 15 days. Both months maintain high humidity levels, with September slightly higher at 83% compared to August's 80%. For a detailed look at weather specifics, you can check Vitznau weather in August.
September and October exhibit a noticeable shift in weather conditions. In September, while the temperatures can reach a maximum of 25°C (77°F) and the average is 13°C (56°F), October brings cooler days with a maximum temperature of only 20°C (68°F) and an average of 9°C (49°F). Precipitation increases slightly from September to October, rising from 146 mm (5.8 in) over 15 days to 165 mm (6.5 in) over 14 days, with October also seeing a rise in humidity to 90% compared to September's 83%. For a closer look at October's weather in Vitznau, check out Vitznau weather in October.
September and November showcase distinct shifts in weather patterns. September enjoys milder temperatures, ranging from a minimum of 1°C (34°F) to a maximum of 25°C (77°F), with an average of 13°C (56°F). The month sees a fair amount of precipitation, totaling 146 mm (5.8 in) over 15 days, and a relatively high humidity level of 83%. In contrast, November brings cooler weather, with temperatures dipping further, including a minimum of -7°C (19°F) and a maximum of 19°C (66°F), averaging just 4°C (39°F). The precipitation decreases slightly to 102 mm (4.0 in) over 14 days, accompanied by higher humidity at 88%. For more specific weather details during this month, you can check Vitznau weather in November.
September and December present strikingly different weather patterns. In September, temperatures range from a mild minimum of 1°C (34°F) to a pleasant maximum of 25°C (77°F), with an average of 13°C (56°F). The month experiences about 146 mm (5.8 in) of precipitation over 15 days, accompanied by relatively high humidity at 83%. In contrast, December enters winter with much colder temperatures, featuring a minimum of -11°C (12°F), an average of 1°C (33°F), and a maximum of just 11°C (52°F). Precipitation increases to 171 mm (6.7 in) over 18 days, and humidity rises to 90%. For more detailed insights, you can check out Vitznau weather in December.
As September arrives in Vitznau, the weather transitions noticeably from the warmth of summer to the coolness of autumn. The days are still pleasantly warm, with a maximum temperature reaching up to 25°C, but the nights can feel quite chilly as they drop to around 1°C. This month also sees a significant amount of precipitation, with rain falling on nearly half the days, leading to a high humidity level of 83%. Compared to the dryer summer months, September brings a refreshing change but also a reminder of the cooler season ahead. For more detailed insights, check out Vitznau Climate.