Last updated: August 27, 2025
In September, Weggis, Switzerland experiences a delightful transition into autumn, with temperatures ranging from a maximum of 25°C (77°F) to a refreshing minimum of 1°C (34°F), leading to an average temperature of 13°C (56°F). This picturesque lakeside town sees approximately 146 mm (5.8 in) of precipitation over 15 days, embodying the charm of early fall. With an average humidity of 83%, the atmosphere is often crisp, painting a serene backdrop for outdoor adventures and cultural explorations. Whether you're hiking the scenic trails or enjoying local cuisine, September in Weggis promises an enchanting experience amid stunning natural beauty.
In Weggis, Switzerland, September marks a delightful transition from the warmth of summer to the crispness of autumn. With a minimum temperature of around 1°C (34°F) and a pleasant average of 13°C (56°F), the month offers a comfortable reprieve from the hot months of July and August. The maximum temperature can reach a comfortable 25°C (77°F), making it an ideal time for outdoor activities and enjoying the stunning landscapes. As the temperatures gradually dip towards the end of the month, the crisp air hints at the approaching fall, creating a perfect atmosphere for exploring the picturesque surroundings and savoring the beauty of nature in its changing colors.
In September, Weggis experiences a notable shift in its weather patterns, receiving 146 mm (5.8 in) of precipitation over 15 days. While this amount is slightly less than the preceding month of August, which boasted 203 mm over the same number of days, September remains a crucial part of the transition into autumn. As summer's warmth fades, the consistent rainfall helps maintain the lush greenery of the region, contrasting with drier months like February and April that see much less precipitation. The early autumn showers indicate a shift in seasonal dynamics, preparing Weggis for the brisk, rainy months ahead. This blend of moisture is essential for nurturing the beautiful landscapes for which the area is renowned.
In Weggis, Switzerland, September ushers in a mild shift in humidity, settling at a comfortable 83%. This slight rise from August’s 80% mirrors the gradual transition into autumn, reminiscent of the lush greenery that defines the region. As the summer warmth yields to cooler temperatures, you can feel a hint of moisture in the air, characteristic of early fall in this picturesque lakeside town. The humidity levels, while lower than the winter months, reflect a balanced climate that invites outdoor exploration amid the stunning landscapes. With October looming, which typically spikes back to 90%, September offers a perfect blend of freshness, appealing to both residents and travelers alike.
September in Weggis, Switzerland, marks a transitional phase as the UV Index settles at 6, categorized as high. This indicates that while the intense summer sun begins to wane, precautions are still necessary—especially with a burn time of just 25 minutes for unprotected skin. Following the peak months of July and August, where the UV Index soared to a striking 9, September offers a slight reprieve but still demands attention to sun safety. As we move into fall, residents and visitors alike should remain vigilant, enjoying the beautiful landscapes while taking care under the sun. For more detailed insights, check out Weggis UV Index.
UV Risk Categories
September in Weggis, Switzerland, offers a delightful continuation of summer's warmth, boasting 320 hours of sunshine that transitions gently into the crispness of autumn. Following the peak sunlight of July, with 415 hours, and the subsequent slight dip in August, September shines as a beacon of light before the days grow shorter. This month marks a significant shift from the vibrant daylight experienced in the summer, yet it remains a comfortable balance, allowing residents and visitors alike to enjoy the stunning lakeside views and majestic mountains. As October approaches, bringing a further decrease to 279 hours, September serves as a perfect bridge between seasons, making it an ideal time to relish the beauty and tranquility of Weggis before winter sets in.
As summer transitions into autumn, September in Weggis, Switzerland, offers a moderate chance of sunny weather, with approximately 34% likelihood of clear skies. This figure reflects a slight uptick from the summer months, where the sunniest days are often overshadowed by clouds and rain. While July and August boast chances of sunshine around 31% and 33%, respectively, September continues this trend of variability. It stands out among the months, providing a quaint blend of pleasant warmth before the crispness of October sets in. As the sun begins to hide a little more, enjoying one of September's sunny spells becomes a delightful treasure.
As summer transitions to autumn in Weggis, Switzerland, September brings with it a gradual decline in daylight, offering about 12 hours of sunshine. This decrease follows a peak in the summer months, where June to August bask in a generous 15 to 14 hours of daylight. While March to May showcases a notable increase from 11 to 15 hours, September signals the beginning of shorter days, reminiscent of the earlier winter months. The rhythm of daylight in Weggis highlights a beautiful cycle of seasonal change, with September marking a gentle preparation for the cozy, candle-lit evenings of fall, while still allowing ample time to enjoy the stunning Swiss landscape.
As September settles in Weggis, Switzerland, the wind begins to whisper its gentle return, with an average speed of 1.2 m/s (3 mph). This marks a slight decline compared to earlier months, aligning with a broader trend of decreasing wind speeds throughout the summer. From July and August, which featured even lighter breezes, September continues the pattern of tranquility as nature prepares for the upcoming autumn. Notably, during the first half of the year, wind speeds maintained a consistent rhythm, hovering around 1.5 to 1.6 m/s (3 to 4 mph), but as the seasons shift, a serene calm prevails, inviting visitors to enjoy the stunning lakeside views in delightful peace.
Weather in Weggis varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Weggis, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present a stark contrast in weather conditions. In September, temperatures range from a 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 relatively moderate precipitation, totaling 146 mm (5.8 in) over about 15 days, accompanied by a humidity level of 83%. In contrast, January is much colder, with temperatures dipping as low as -15°C (5°F) and peaking at 11°C (52°F), averaging around -1°C (30°F). Precipitation levels are similar at 144 mm (5.7 in) across 13 days, but humidity is slightly higher at 92%. For a more detailed view of January's weather, visit Weggis weather in January.
September and February present contrasting weather patterns. 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 experiences a significant amount of precipitation, totaling 146 mm (5.8 in) over 15 days, while humidity remains relatively high at 83%. In stark contrast, February sees much colder temperatures, with a minimum of -19°C (-1°F) and a maximum of 14°C (58°F), averaging just 1°C (34°F). The precipitation in February is lower, at 106 mm (4.2 in) over 12 days, but humidity is slightly higher at 89%. For more detailed insights into February weather, you can check out Weggis weather in February.
September and March present contrasting weather patterns, reflecting the transition from summer into fall and winter into spring, respectively. 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 experiences a significant amount of rainfall, totaling 146 mm (5.8 in) across 15 days, accompanied by a relatively high humidity level of 83%. In contrast, March sees colder temperatures, with a range from a minimum of -15°C (6°F) to a maximum of 18°C (64°F) and an average of only 3°C (38°F). Despite slightly lower precipitation at 127 mm (5.0 in) over 17 days, the humidity remains high at 87%. For more detailed information, you can check out Weggis weather in March.
When comparing the weather in September and April, several distinct differences emerge. September typically enjoys milder temperatures, with an average of 13°C (56°F) and maximums reaching 25°C (77°F), compared to April's cooler average of 7°C (45°F) and a maximum of 22°C (71°F). While September experiences more rain overall, totaling 146 mm (5.8 in) over about 15 days, April records slightly less precipitation at 104 mm (4.1 in) over 12 days. Both months exhibit high humidity levels, with September at 83% and April slightly higher at 84%. For a closer look at the conditions you can expect, check out Weggis weather in April.
September and May present contrasting weather conditions, with September generally being warmer and more humid. In September, temperatures range from a chilly 1°C (34°F) to a pleasant maximum of 25°C (77°F), while May experiences cooler temperatures, with a minimum of -7°C (19°F) and a maximum of 27°C (80°F). However, May tends to have slightly more precipitation, averaging 163 mm (6.4 in) over 19 days compared to September's 146 mm (5.8 in) over 15 days. Both months have high humidity, but September's average of 83% edges out May's 80%. For a closer look at May weather specifics, you can visit Weggis weather in May.
September weather is generally cooler than June, with temperatures ranging from a chilly minimum of 1°C (34°F) to a comfortable maximum of 25°C (77°F). In contrast, June boasts warmer temperatures, with a minimum of 4°C (39°F) and a maximum reaching up to 31°C (88°F). Precipitation is also more prevalent in June, with 189 mm (7.4 in) falling over 18 days compared to September's 146 mm (5.8 in) over 15 days. Interestingly, both months maintain high humidity levels, around 83% in September and slightly lower at 82% in June. For a more detailed look at June weather in Weggis, you can check out Weggis weather in June.
When comparing the weather in September and July, it's clear that July tends to be warmer, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 31°C (87°F). In contrast, September features a cooler range with temperatures dropping to a minimum of 1°C (34°F) and peaking at 25°C (77°F). Additionally, July experiences slightly more precipitation, averaging 190 mm (7.5 in) over 18 days, while September receives 146 mm (5.8 in) across 15 days. Both months share a high humidity level of 83%, but July's warmth and rainfall make it a more summer-like month. For further details about weather conditions, you can check Weggis weather in July.
In comparing the weather patterns of September and August, it is clear that September experiences cooler temperatures, with a minimum of 1°C (34°F) and an average of 13°C (56°F), in contrast to August's warmer minimum of 7°C (45°F) and an average of 17°C (63°F). While both months see a fair amount of rainfall, August is notably wetter, accumulating 203 mm (8.0 in) over 18 days compared to September's 146 mm (5.8 in) spread over 15 days. Humidity levels are quite similar as well, with September at 83% and August slightly lower at 80%. This transition into September marks a notable shift towards cooler and drier conditions, especially evident when exploring Weggis weather in August.
In comparing the weather between September and October, we can observe a notable decline in average temperatures. September experiences a range with minimums around 1°C (34°F) and maximums reaching 25°C (77°F), creating a comfortable climate with an average of 13°C (56°F). In contrast, October sees a drop in temperatures, with averages falling to 9°C (49°F) and maximums not exceeding 20°C (68°F). Rainfall also increases slightly, with October experiencing around 165 mm (6.5 in) of precipitation over 14 days, compared to September's 146 mm (5.8 in) over 15 days. Furthermore, humidity levels rise in October to 90%, indicating a more damp atmosphere. For a more detailed look at October weather in Weggis, feel free to visit Weggis weather in October.
September and November exhibit distinct weather patterns, with September generally being warmer and more humid. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 25°C (77°F), with an average temperature of 13°C (56°F). The month sees significant rainfall, totaling 146 mm (5.8 in) spread over 15 days, paired with a humidity level of 83%.
Conversely, November transitions into colder conditions, where the temperature drops to a minimum of -7°C (19°F) and rises only to a maximum of 19°C (66°F), leading to an average of 4°C (39°F). Precipitation is lighter at 102 mm (4.0 in) across 14 days, accompanied by a slight increase in humidity at 88%. For a more detailed insight into the weather during this month, you can visit Weggis weather in November.
September weather is characterized by a milder temperature range, with minimums around 1°C (34°F) and maximums reaching up to 25°C (77°F), resulting in an average of 13°C (56°F). This month experiences a fair amount of precipitation, totaling 146 mm (5.8 in) over 15 days, coupled with relatively high humidity at 83%. In contrast, December brings much colder temperatures, with minimums dropping to -11°C (12°F) and maximums only reaching 11°C (52°F), leading to a much lower average of 1°C (33°F). Precipitation increases slightly to 171 mm (6.7 in) over 18 days, and humidity rises to 90%. For more specifics about the winter conditions, check out Weggis weather in December.
As September unfolds in Weggis, the weather becomes a delightful blend of warmth and coolness, marking a transition from the summer heat to the crispness of autumn. With maximum temperatures reaching a pleasant 25°C and an average that hovers around 13°C, outdoor enthusiasts can take advantage of the comfortable climate. However, it's also a month that brings about increased rainfall, with precipitation occurring on about half of the days, contributing to a humidity level of 83%. This unique combination of mild temperatures and sporadic showers creates an atmospheric charm that sets September apart from both the sizzling summer months and the colder days of fall. For a deeper insight into the region's weather patterns, check out Weggis Climate.