Last updated: August 27, 2025
In September, Avenches, Switzerland experiences a delightful range of temperatures, with maximums reaching 28°C (82°F) and averaging around 14°C (58°F). The month is characterized by cooler nights, dipping to a refreshing 3°C (37°F). Although the scenery thrives under the balmy weather, precipitation is not uncommon, with 83 mm (3.3 in) falling over 12 days, contributing to the region's lush landscapes. The humidity level hovers around 81%, creating a mild and comfortable atmosphere for residents and visitors alike. Whether strolling through ancient streets or enjoying the stunning Swiss countryside, September in Avenches is truly an enchanting experience.
In September, Avenches, Switzerland, begins to transition into autumn, bringing cooler temperatures that contrast with the warmth of summer. The month kicks off with nighttime lows around 3°C (37°F), while daytime highs can still reach a pleasant 28°C (82°F), creating a comfortable average temperature of 14°C (58°F). This blend of cool mornings and mild afternoons makes it an ideal time for outdoor activities, as summer's heat gradually gives way to the refreshing crispness of fall. As September progresses, the gentle descent in temperatures signals the approaching change of seasons, reflecting a harmonious balance between lingering warmth and the onset of autumn's embrace.
In September, Avenches experiences a notable transition in weather, marked by a precipitation amount of 83 mm (3.3 in) over 12 rainy days. This represents a decline from the wetter summer months, as both July and August boasted significantly higher totals of 145 mm and 130 mm, respectively. The early fall rains help to ease into the crispness of autumn, setting the stage for the wetter months ahead. As October approaches, averages suggest an increase in precipitation once more, indicating a typical seasonal pattern where the lushness of late summer gives way to a more variable autumn climate.
In Avenches, Switzerland, September marks a slight uptick in humidity at 81%, following the drier summer months of July and August, which recorded 82% and 77% respectively. As the warm embrace of summer gives way to the crispness of autumn, residents and visitors alike can expect a rejuvenating blend of atmospheric moisture. This subtle increase is part of a broader trend where humidity levels rise again in the fall, eventually peaking at 89% in October and November, echoing the elevated levels experienced in the heart of winter. With this seasonal shift, September presents a comfortable transition, striking a balance between the lingering warmth of summer and the approaching chill of autumn.
As summer gives way to autumn in Avenches, September sees a noticeable shift in the UV Index, which registers at 6, indicating a high exposure category. This reduction from August's peak of 8 suggests that while the sun is still strong, the risk of overexposure is less pronounced, allowing for a comfortable burn time of 25 minutes before the skin may begin to redden. Compared to the intense levels experienced during the midsummer months, September serves as a reminder to remain vigilant, balancing outdoor enjoyment with necessary sun protection. As you plan your activities this month, stay informed about the UV levels with resources like Avenches UV Index to ensure a safe and enjoyable experience under the sun.
UV Risk Categories
As September unfolds in Avenches, Switzerland, the city basks in a generous 332 hours of sunshine, a delightful embrace that signals the transition into autumn. The warm glow of late summer lingers, building on the peak of 418 hours reached in July, before gradually descending into the cooler months. This temperate month marks a shift from the radiant heights of summer, with daylight diminishing but still surpassing the hours of October. Residents can savor these golden days, as September maintains a bright balance between warmth and the crispness of fall, inviting both outdoor explorers and those seeking serene moments under the clear sky.
In September, the likelihood of sunny weather in Avenches, Switzerland, stands at 35%, which mirrors the pleasant yet unpredictable nature of late summer. Emerging from the summer months, which averaged slightly higher chances of sunshine, September transitions into a fall ambiance while maintaining a fairly consistent rate of sunshine. The sun’s appearance in this month suggests a lingering warmth, as residents and visitors alike can still enjoy outdoor activities amidst the shifting foliage. As the days gradually shorten, the trend of occasional sunny days provides a refreshing respite before the cooler months settle in. Visitors should prepare for a mix of sun and early autumn breezes, making September a delightful time to explore Avenches.
As summer fades, September in Avenches, Switzerland, ushers in a gentle transition, with daylight hours gradually decreasing to an average of 12 hours. Following the peak summer months of June, July, and August, which basked in a consistent 15 hours of sunlight, September marks a notable shift. Although it retains more light than the approaching autumn months like October and November, the lengthening shadows remind us that shorter days are on the horizon. This month reflects a balanced harmony, where the warmth of late summer begins to mingle with the coolness of autumn, creating a unique charm that is cherished by both locals and visitors alike.
As summer fades into autumn, September in Avenches, Switzerland, greets visitors with a gentle breeze, characterized by an average wind speed of 1.6 m/s (4 mph). This marks a notable dip from the busier, warmer months, as the wind settles after the heights of May's 2.7 m/s and June's 1.7 m/s. The shift from the more blustery summer days suggests a tranquil transition, inviting leisurely strolls through the charming streets lined with historic architecture. As the cooler weather approaches in October, with a mild increase back to 2.1 m/s, September offers a calm interlude that perfectly captures the serene beauty of the Swiss landscape in early autumn.
Weather in Avenches varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Avenches, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present dramatically different weather conditions. In September, temperatures range from a milder minimum of 3°C (37°F) to a comfortable average of 14°C (58°F), peaking at a warm 28°C (82°F). The month experiences around 83 mm (3.3 in) of precipitation over 12 days, with humidity levels at 81%. In contrast, January brings much colder temperatures, with a minimum of -17°C (2°F) and an average of 0°C (32°F), reaching a maximum of only 14°C (58°F). This month sees more precipitation at 109 mm (4.3 in) over the same number of days, accompanied by higher humidity at 91%. For a deeper look into January weather in Avenches, check out Avenches weather in January.
September and February present striking contrasts in weather. In September, temperatures range from a minimum of 3°C (37°F) to a comfortable maximum of 28°C (82°F), with an average of 14°C (58°F). The month experiences 83 mm (3.3 in) of precipitation over about 12 days and maintains a humidity level of 81%. Conversely, February is much colder, with temperatures ranging from a frigid minimum of -12°C (10°F) to a maximum of 17°C (62°F), averaging just 2°C (37°F). Precipitation slightly increases to 87 mm (3.4 in), also spread across 12 days, and humidity rises to 89%. For more detailed insights, check out Avenches weather in February.
September and March present distinctly different weather patterns. September tends to be warmer, with temperatures ranging from a chilly 3°C (37°F) at night to a pleasant 28°C (82°F) during the day, average around 14°C (58°F). In contrast, March experiences much colder temperatures, with a minimum of -14°C (7°F) and a maximum of 20°C (68°F), averaging 5°C (41°F). While September sees about 83 mm (3.3 in) of precipitation over 12 days, March has higher precipitation levels at 114 mm (4.5 in), spread across 15 days. Additionally, humidity levels are slightly higher in March at 87%, compared to 81% in September. For a more detailed view, check out Avenches weather in March.
The weather in September and April shows notable differences in temperature and precipitation patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 28°C (82°F), with an average of 14°C (58°F). This month experiences higher precipitation at 83 mm (3.3 in) over 12 days, and the humidity stands at 81%. In contrast, April features cooler conditions, with minimum temperatures dipping to -6°C (21°F) and maximums reaching 24°C (76°F), averaging around 9°C (48°F). April sees less rainfall at 65 mm (2.6 in), also spread over 12 days, and a slightly higher humidity at 84%. For those seeking insights about April weather specifics, you can refer to Avenches weather in April.
In September, the weather is characterized by a broader temperature range, with minimums around 3°C (37°F) and maximums reaching up to 28°C (82°F), offering comfortable afternoons. In contrast, May starts with cooler nights, where temperatures can dip to -2°C (29°F), though it also enjoys warm days peaking at 28°C (84°F). However, May tends to be wetter, with an average precipitation of 159 mm (6.3 in) over 18 days, compared to September's 83 mm (3.3 in) over 12 days. Humidity levels are fairly similar in both months, averaging around 80-81%. For a detailed look at the May weather specifically, you can refer to Avenches weather in May.
When comparing the weather in September and June, there are noticeable differences in temperature and precipitation. September experiences milder temperatures, with minimums around 3°C (37°F) and averages at 14°C (58°F), while June boasts warmer conditions, starting from a minimum of 6°C (43°F) and averaging 17°C (63°F). The maximum temperatures in June can reach as high as 33°C (91°F), significantly warmer than September’s peak of 28°C (82°F). Additionally, June tends to be wetter, with precipitation totaling 135 mm (5.3 in) over 18 days, compared to September's 83 mm (3.3 in) over 12 days. Humidity levels remain fairly similar, hovering around 81% in September and 82% in June. For further details about the specific weather in June, you can visit Avenches weather in June.
September weather in Avenches features a more moderate temperature range, with minimums around 3°C (37°F) and maximums reaching 28°C (82°F), compared to July's warmer temperatures, which range from a minimum of 9°C (48°F) to a maximum of 34°C (94°F). Although September offers cooler days with an average temperature of 14°C (58°F), it does see significant precipitation, totaling 83 mm (3.3 in) over about 12 rainy days. In contrast, July experiences higher rainfall at 145 mm (5.7 in) over 17 days, contributing to the season's high humidity levels, which hover around 82% in both months. For more detailed insights about July’s weather, check Avenches weather in July.
In comparing the weather between August and September, we see a notable shift in temperature and precipitation patterns. August typically experiences warmer temperatures, with a minimum of 7°C (44°F) and an average of 18°C (65°F), peaking at 33°C (92°F). In contrast, September has cooler temperatures, ranging from a minimum of 3°C (37°F) to an average of 14°C (58°F) and a maximum of 28°C (82°F). August also has more rainfall, with 130 mm (5.1 in) over 17 days, while September receives lesser precipitation at 83 mm (3.3 in) across 12 days. Humidity levels are slightly higher in September at 81%, compared to August's 77%. For more details on August weather specifically, you can visit Avenches weather in August.
September tends to feature warmer temperatures, with a minimum of 3°C (37°F) and an average of 14°C (58°F), peaking at a comfortable 28°C (82°F). This month also sees a moderate level of precipitation at 83 mm (3.3 in) over 12 days, with humidity at 81%. In contrast, October brings cooler weather, where temperatures drop significantly, with a minimum of 0°C (32°F) and an average of 10°C (50°F), reaching a maximum of 22°C (72°F). Precipitation increases to 108 mm (4.3 in) occurring over 13 days, with humidity rising to 89%. For a more detailed forecast, you can check Avenches weather in October.
September and November present striking contrasts in weather conditions. In September, temperatures range from a mild 3°C (37°F) at night to a warm 28°C (82°F) during the day, with an average of 14°C (58°F). The month experiences a moderate level of precipitation at 83 mm (3.3 in) over roughly 12 days, and the humidity sits at a comfortable 81%. In contrast, November brings much cooler temperatures, with nighttime lows dropping to -4°C (25°F) and daytime highs reaching just 19°C (66°F), averaging around 4°C (40°F). This month also sees slightly higher precipitation at 90 mm (3.5 in) across about 14 days, accompanied by an increase in humidity to 89%. For more detailed insights, you can check Avenches weather in November.
September weather in Avenches features a milder climate, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 28°C (82°F) and an average of 14°C (58°F). The month experiences a fair amount of rainfall, totaling 83 mm (3.3 in) over about 12 days, along with a comfortable humidity level of 81%. In contrast, December brings a stark shift in conditions, with temperatures dropping significantly to a minimum of -8°C (17°F) and an average of 2°C (35°F), peaking at a maximum of 12°C (54°F). Precipitation also increases in December, reaching 158 mm (6.2 in) over 19 days, coupled with higher humidity at 91%. For a more detailed overview of December's weather, you can view Avenches weather in December.
As September unfolds in Avenches, the weather offers a delightful transition into autumn with mild temperatures and a hint of crispness in the air. With an average temperature that balances warmth with the coolness of early morning and late evening, this month stands apart from the intense heat of summer. Precipitation becomes more frequent, indicating the seasonal shift, while humidity levels remain relatively high, creating a sometimes-thick atmosphere. For a detailed look at how Avenches' September weather compares throughout the year, be sure to check out Avenches Climate.