Last updated: August 27, 2025
In Gruyeres, Switzerland, September brings a refreshing transition into autumn, characterized by a maximum temperature peaking at 26°C (78°F) and an average of 13°C (56°F), with nighttime lows dropping to a cool 1°C (34°F). Throughout the month, expect significant precipitation, accumulating to 100 mm (3.9 in) over approximately 13 days, creating a lush, vibrant landscape. With a humidity level averaging 81%, the air carries a crispness that invigorates the senses, making September an enchanting time to explore the picturesque charms of this Alpine region.
As September arrives in Gruyeres, Switzerland, the landscape transitions into a vibrant tapestry of early autumn hues. Temperatures during this month see a noticeable shift, starting with a minimum of 1°C (34°F) and reaching an average of 13°C (56°F), culminating in delightful highs of 26°C (78°F). This marks the tail end of summer, as the comforting warmth of August gives way to cooler evenings, inviting locals and visitors alike to enjoy the stunning scenery. The shift is subtle yet significant, highlighting a period where the crisp air becomes more invigorating while still offering ample warmth for outdoor explorations. As nature prepares for the chillier months ahead, September stands out as a beautiful bridge between summer and autumn, perfect for savoring Gruyeres' picturesque charm.
In September, Gruyeres experiences a notable shift in its precipitation patterns, with an average of 100 mm (3.9 in) of rainfall spread over 13 days. This marks a decrease compared to the wetter summer months, as both August's 152 mm and July's 165 mm set the stage for the lush landscapes. The transition into autumn brings a cooler, crisper atmosphere, while the rainfall becomes less frequent. This slight drop in both precipitation amounts and days underscores the gradual shift toward the drier autumn months, as the region prepares for the incoming chill of October, which sees an uptick back to 120 mm. Overall, September serves as a bridge between the vibrant summer and the serene fall, showcasing Gruyeres' breathtaking natural beauty amidst changing weather conditions.
As autumn approaches in Gruyeres, Switzerland, September experiences a mild humidity level of 81%, marking a subtle transition from the summer months. Following the driest period of August with a humidity of 77%, September sees a slight increase, aligning more closely with the higher levels typical of the earlier months in the year. This gradual uptick reflects the onset of cooler temperatures as the region prepares for the wetter months ahead. Notably, October and November are characterized by elevated humidity, peaking at 89%, a reminder of the atmospheric changes that come with the fall season. Overall, September's humidity indicates a balance between the lingering warmth of summer and the impending chill of winter, setting the stage for the cycle of seasons in this picturesque Swiss town.
As September rolls into Gruyeres, Switzerland, the UV Index remains at a high level of 7, which calls for caution when enjoying the last warm days of summer. After the peak values of 8 to 10 seen in the months leading up to September, the UV exposure begins to taper off slightly, but with a burn time of 25 minutes, sun protection is still essential for outdoor activities. This month marks a transition from the very high indices of mid-summer, where visitors had to be particularly vigilant. Experiencing outdoor adventures in this picturesque region is delightful, yet it’s important to stay aware of the UV levels. For further insights on UV conditions and safety, check out the Gruyeres UV Index.
UV Risk Categories
As summer gracefully transitions to autumn, September in Gruyeres, Switzerland, embraces a delightful blend of warm sunshine and crisp air. With 330 hours of sunlight, the month marks a gentle decline from the peak of summer, yet it still stands strong compared to the earlier months of the year. After basking in the lengthy days of July and August, which boast 418 and 388 hours respectively, September offers a perfect opportunity to savor the scenic landscapes without the summer crowds. Although the days begin to shorten, the rich golden hues shine on the enchanting medieval town, inviting visitors to explore its charming streets and spectacular vistas. The gradual shift in sunlight hours hints at the enchanting change of seasons, making September a unique and captivating time to experience the beauty of Gruyeres.
As September rolls in, Gruyeres, Switzerland, offers a moderate chance of sunny weather, with a 37% likelihood of sunshine gracing the picturesque landscapes. This marks a continuation of a slightly elevated summer trend, where the sun shines approximately one-third of the time during the warmer months. While June through August maintain a steady rhythm of sun, September's chance mirrors its predecessors, yet it hints at the approaching transition into autumn, where the sun begins to play hide and seek more frequently. As you explore the charming streets and scenic vistas, the moderate probability of clear skies presents a delightful opportunity to enjoy the early fall ambiance.
In September, Gruyeres, Switzerland, experiences a graceful transition as daylight begins to wane, offering around 12 hours of sunlight. This marks a noticeable shift from the vibrant, sun-drenched days of summer, where daylight peaks at 15 hours in both June and July. The gradual decrease in daylight is a poignant reminder of the approaching autumn, as the days shorten from August’s 14 hours to September’s more delicate illumination. This seasonal rhythm highlights nature's cycle, blending the lingering warmth of summer with the cooler breezes of fall, inviting residents and visitors alike to savor the beautiful landscapes bathed in softer golden light.
As summer transitions to autumn, September in Gruyeres, Switzerland, is characterized by a gentle decline in wind speed, averaging 1.2 m/s (3 mph). This marks the season's calm before the cooler months, reflecting a softer rhythm in the air. Earlier months saw slightly stronger breezes, particularly with a consistent 1.6 m/s in late spring and early autumn. However, as September unfolds, the winds become subtler, inviting a serene atmosphere perfect for enjoying the picturesque landscapes. Following September, wind speeds gradually pick up again in October, highlighting the dynamic nature of Gruyeres' climatic patterns. This dance of wind reflects the region's enchanting seasonal shifts, making each month a unique experience for both residents and visitors.
Weather in Gruyeres varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Gruyeres, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather tends to be much milder, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 26°C (78°F) and an average of 13°C (56°F). The humidity is relatively high at 81%, and the month experiences about 100 mm (3.9 in) of precipitation over 13 days. In contrast, January brings a significant drop in temperatures, with a minimum of -17°C (1°F) and a maximum of 10°C (51°F), averaging -2°C (29°F). Despite having slightly less precipitation at 132 mm (5.2 in) over 11 days, January is characterized by a higher humidity level of 91%. For a more detailed look at the weather conditions in January, you can refer to Gruyeres weather in January.
September and February present contrasting weather conditions. In September, temperatures 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). The month experiences around 100 mm (3.9 in) of precipitation over 13 days, accompanied by humidity levels at 81%. In contrast, February brings much colder temperatures, with lows plunging to -15°C (4°F) and daytime highs averaging only 15°C (59°F), leading to a much cooler average of 1°C (34°F). Precipitation slightly increases to 106 mm (4.2 in) but occurs over fewer days, just 11 in total, while humidity rises to 89%. For a detailed look at February weather, visit Gruyeres weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a refreshing 1°C (34°F) to a warm 26°C (78°F), with an average of 13°C (56°F), and precipitation occurs on about 13 days, totaling 100 mm (3.9 in) and accompanied by a moderate humidity of 81%. By contrast, March sees much cooler temperatures, with a minimum of -16°C (4°F), an average of 3°C (38°F), and a maximum reaching 18°C (65°F). This month also experiences more precipitation, with 135 mm (5.3 in) spread over 15 days and higher humidity levels at 87%. For more specific information on March weather, you can check Gruyeres weather in March.
In comparing the weather of September and April, we observe a notable shift in temperatures and precipitation patterns. September tends to be milder, with average temperatures ranging from a cold 1°C (34°F) at night to a warm 26°C (78°F) during the day. In contrast, April experiences colder nights with minimum temperatures dropping to -12°C (10°F) and a slightly lower average of 7°C (45°F).
Precipitation levels are relatively close, with September receiving about 100 mm (3.9 in) over 13 days, while April sees a bit less at 76 mm (3.0 in) across 12 days. Both months maintain high humidity levels, with September at 81% and April a touch higher at 84%. For a detailed look at April weather, you can explore Gruyeres weather in April.
In comparing the weather between September and May, September emerges as a month of warmer 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, May experiences slightly cooler temperatures, with a minimum of -3°C (27°F) and an average of 11°C (51°F), but matches September with a maximum of 27°C (81°F). Precipitation levels are notably higher in May, totaling 182 mm (7.2 in) over 19 days, compared to September's 100 mm (3.9 in) over 13 days. Humidity levels are quite similar, with September at 81% and May at 80%. For a more detailed look at May weather, you can visit Gruyeres weather in May.
September and June showcase distinct weather characteristics. 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). The month experiences 100 mm (3.9 in) of precipitation over 13 days, accompanied by a high humidity level of 81%. Conversely, June is typically warmer, with temperatures fluctuating between 4°C (39°F) to 32°C (89°F) and an average of 16°C (60°F). The precipitation in June is higher at 159 mm (6.3 in) spread across 18 days, while humidity levels are slightly elevated at 82%. For a closer look at the specifics, you can check Gruyeres weather in June. Overall, June tends to be warmer and wetter than September.
When comparing the weather in September and July, it’s clear that July tends to be warmer and wetter. July boasts a minimum temperature of 6°C (44°F) and an average high of 32°C (90°F), while September cooler temperatures, with a minimum of 1°C (34°F) and a maximum reaching 26°C (78°F). Precipitation levels also differ, as July receives 165 mm (6.5 in) over 16 days compared to September's 100 mm (3.9 in) over 13 days. Humidity remains relatively consistent in both months, with September at 81% and July slightly higher at 82%. For more specific insights on July weather, check out Gruyeres weather in July.
September weather features a cooler temperature range, with minimums dropping to 1°C (34°F) and an average high of 26°C (78°F), compared to August's milder minimum of 6°C (43°F) and a maximum of 30°C (86°F). Additionally, September experiences increased precipitation, totaling 100 mm (3.9 in) over 13 days, although slightly less than August's 152 mm (6.0 in) across 15 rainy days. Humidity is also slightly higher in September at 81%, compared to August's 77%, contributing to a more damp atmosphere as summer gives way to autumn. For a detailed overview of the conditions, check out Gruyeres weather in August.
September typically offers a warmer climate compared to October, with average temperatures around 13°C (56°F) and maximums reaching 26°C (78°F). In contrast, October sees a drop in average temperature to 9°C (48°F) and a maximum of 22°C (72°F). Precipitation levels are slightly higher in October, with 120 mm (4.7 in) expected over 13 days, compared to 100 mm (3.9 in) in September. Additionally, humidity increases from 81% in September to 89% in October, contributing to a more damp atmosphere. For more detailed information, you can check Gruyeres weather in October.
September and November present quite contrasting 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). The month experiences about 100 mm (3.9 in) of precipitation across 13 days, and humidity levels sit at 81%. In comparison, November brings cooler temperatures, with a minimum of -8°C (17°F) and a slightly higher maximum of 18°C (64°F), averaging around 4°C (39°F). Precipitation increases slightly to 106 mm (4.2 in) over the same number of days, while humidity also rises to 89%. For a closer look at November weather, you can visit Gruyeres weather in November.
In September, the weather is generally mild, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 26°C (78°F) and an average of 13°C (56°F). The month experiences around 100 mm (3.9 in) of precipitation over 13 days, accompanied by a humidity level of 81%. In contrast, December brings much colder conditions, with temperatures dropping significantly, averaging around 0°C (32°F) and ranging from -16°C (3°F) to 11°C (52°F). Precipitation increases to 208 mm (8.2 in) over 18 days, and humidity rises to 91%. For a more detailed look at the weather conditions, you can visit Gruyeres weather in December.
As summer transitions to autumn, September in Gruyeres brings a delightful shift in weather, characterized by milder temperatures and increased humidity. Compared to the hotter months, visitors can expect cooler evenings and crisp mornings, creating a refreshing atmosphere perfect for exploring the stunning scenery. Although rainfall is more frequent with a notable number of precipitation days, the landscape flourishes under the lush greenery that follows. This unique blend of weather makes September an ideal time to immerse yourself in the natural beauty of Gruyeres. For a deeper understanding of what to expect throughout the year, visit Gruyeres Climate.