Last updated: August 27, 2025
In September, Thusis, Switzerland experiences a delightful blend of mild and brisk temperatures. With maximums reaching 21°C (70°F) and a cool average of 8°C (47°F), the weather fluctuates from cozy afternoons to chilly evenings, while nighttime can dip as low as -10°C (15°F). This month sees 136 mm (5.3 in) of precipitation over approximately 15 days, leading to a serene and refreshing atmosphere, complemented by a relatively high humidity of 83%. Perfect for those who revel in the beauty of autumn’s early embrace, September in Thusis offers splendid opportunities for exploring the lush landscapes and rich cultural heritage of this picturesque Swiss town.
As September arrives in Thusis, Switzerland, a noticeable shift in temperatures marks the transition from summer to fall. The month begins with a minimum temperature of -10°C (15°F) and climbs to a maximum of 21°C (70°F), making it a refreshing period with an average temperature of 8°C (47°F). This marks a gradual decline from the warmer summer months, yet still offers pleasant days that invite outdoor exploration. With September's temperatures significantly milder than the winter extremes, it provides a unique opportunity for visitors to enjoy the breathtaking autumn scenery in this picturesque alpine town. The crisp air and vibrant foliage create a perfect backdrop for hiking and other outdoor activities, heralding the onset of the colder months to come.
In September, Thusis experiences a notable shift in precipitation patterns, with a total of 136 mm (5.3 in) of rainfall over 15 days. This amount, while significant, marks a decrease from the previous month’s peak of 201 mm (7.9 in) in August, which had seen the highest rainfall of the year. The transition into autumn brings a more moderate climate, as September's precipitation begins to taper off from the summer deluge. This trend reflects the overall pattern for the region, where rainfall tends to lessen as the year progresses, although the number of rainy days remains relatively consistent. As the lush summer greens give way to the vibrant hues of fall, September serves as a bridge, blending both the abundant moisture of summer and the drier conditions that are typically anticipated in October.
In September, Thusis, Switzerland, experiences a notable shift in humidity levels, maintaining a comfortable 83%. This marks a slight increase from the drier months of summer, which averaged around 80%, yet is significantly lower than the high humidity peaks of January and October, both hovering around 90%. As the region transitions from the warmth of summer to the crispness of autumn, the moderate humidity in September creates a refreshing atmosphere, setting the stage for the wetter months ahead. Overall, the data indicates that humidity in Thusis tends to rise and fall with the seasons, providing a varied yet consistently moisture-rich environment throughout the year.
As summer transitions to autumn, September in Thusis, Switzerland sees a noticeable decline in the UV Index, which stands at 7, categorizing it as high and allowing for a burn time of 25 minutes. This reduction follows the peak UV levels of 10 experienced in July and June, where the exposure was classified as very high. As the days grow shorter and temperatures start to cool, residents and visitors should remain cautious, as the risk of UV exposure is still significant. Compared to the preceding months, September serves as a reminder to enjoy the outdoors responsibly while still being mindful of sun safety. For detailed insights into UV levels throughout the year, visit Thusis UV Index.
UV Risk Categories
In September, Thusis, Switzerland, experiences a delightful blend of sunshine and crisp autumn air, with 309 hours of sunlight illuminating the enchanting landscapes. As summer wanes, the sun's presence gracefully dwindles from the peak brightness of July, which boasts a remarkable 408 hours, to the more temperate embrace of September. This month marks a gentle transition, as days shorten and the vibrant hues of fall begin to emerge, following a crescendo of light from earlier spring and summer months. With a steady decline continuing into October, the pleasant September sun serves as a sweet reminder of the warmth that's soon to fade, inviting both locals and visitors to savor the last golden rays before winter's chill sets in.
In Thusis, Switzerland, the likelihood of sunny weather in September stands at 36%, a refreshing boost following the summer months. As the year progresses, we observe a trend of fluctuating sunshine chances, peaking in February at 42%, before tapering off slightly during the warmer months. Interestingly, September maintains comparable sun exposure similar to both October and April, indicating a potential for pleasant late-summer days. This moderate sunshine percentage hints that visitors can still enjoy the lingering warmth and bright skies, making it an appealing time to explore the stunning landscapes of Thusis.
As the summer warmth begins to wane, September in Thusis, Switzerland, offers a gentle transition with about 12 hours of daylight. This month marks a noticeable reduction from the sun-drenched days of July and August, which bask in a peak of 15 hours of sunlight. The gradual decline reflects the onset of autumn, with daylight hours steadily decreasing as the year progresses towards winter. Notably, September's daylight duration still provides ample opportunity for outdoor activities, but it heralds the shift into cooler, shorter days, contrasting sharply with the longer, vibrant summers that precede it.
In Thusis, Switzerland, the month of September continues the gentle embrace of the late summer season, characterized by a subdued average wind speed of 1.2 m/s (3 mph). This moderate breeze closely aligns with the trends observed in the prior months of August and June, hinting at a consistent calmness in the air as the year transitions into autumn. Interestingly, early autumn months show a slight dip in wind activity compared to the springtime peaks, where averages hovered around 1.4 to 1.6 m/s. As nature prepares for the crispness of October, residents and visitors can relish the serene atmosphere, making September an ideal time to explore the stunning landscapes of Thusis while enjoying the soft winds whispering through the valleys.
Weather in Thusis varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Thusis, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present quite contrasting weather conditions. In September, temperatures range from a chilly -10°C (15°F) at night to a pleasant 21°C (70°F) during the day, with an average of 8°C (47°F). The month sees significant precipitation, totaling 136 mm (5.3 in) over about 15 days, accompanied by a humidity level of 83%. On the other hand, January is much colder, with temperatures plummeting to a minimum of -28°C (-19°F) and a maximum of just 6°C (43°F), averaging -8°C (18°F). Precipitation decreases to 92 mm (3.6 in) over 11 days, and humidity remains high at 92%. The stark differences in temperatures and conditions between these two months highlight the seasonal transition, making the winter chill in January particularly striking. For more details, you can check Thusis weather in January.
In September, the weather is considerably milder with average temperatures ranging from a minimum of -10°C (15°F) to a maximum of 21°C (70°F), accompanied by higher precipitation of 136 mm (5.3 in) over approximately 15 days. The humidity level sits at 83%, making it feel damp yet still relatively comfortable for outdoor activities. In contrast, February presents a more severe climate, characterized by much colder temperatures, with a minimum of -25°C (-13°F) and a maximum of only 10°C (50°F). While February experiences a lower total precipitation of 66 mm (2.6 in) over 12 days, the humidity rises to 89%, contributing to a bone-chilling cold. For more details on February weather specifics, you can visit Thusis weather in February.
September and March present contrasting weather patterns, reflecting the transition from summer to autumn and winter to spring, respectively. In September, temperatures range from a chilly -10°C (15°F) at night to a pleasant 21°C (70°F) during the day, with an average temperature of 8°C (47°F). This month sees considerable rainfall of 136 mm (5.3 in) over 15 days, accompanied by high humidity at 83%.
Conversely, March experiences much colder conditions, with temperatures dipping as low as -25°C (-13°F) and peaking at 12°C (54°F), averaging around -2°C (29°F). While precipitation is slightly lower at 95 mm (3.7 in) spread across 16 days, the humidity levels climb to 87%. For a more detailed look at March weather, you can explore Thusis weather in March.
September and April showcase notable differences in weather patterns. In September, temperatures range from a chilly -10°C (15°F) at their lowest to a pleasant max of 21°C (70°F), with an average temperature of 8°C (47°F). This month receives about 136 mm (5.3 in) of precipitation over approximately 15 days, and humidity hovers around 83%. In contrast, April experiences colder conditions, with minimum temperatures dropping to -23°C (-9°F) and a maximum of 16°C (61°F), yielding an average of just 2°C (36°F). Precipitation is also lower at 93 mm (3.7 in) over about 14 days, while humidity sits slightly higher at 84%. For a more detailed look at the weather in April, you can check out Thusis weather in April.
In comparing the weather of September and May, we observe notable differences in temperature and precipitation patterns. September typically offers a milder climate with an average temperature of 8°C (47°F), peaking at 21°C (70°F), while May is slightly cooler with an average of 6°C (43°F) and a maximum of 22°C (71°F). Precipitation is also higher in May, totaling 157 mm (6.2 in) over 22 days compared to September's 136 mm (5.3 in) over 15 days. Additionally, humidity levels are fairly similar, with September at 83% and May at 80%. For more detailed insights on May weather, you can visit Thusis weather in May.
In comparing the weather between September and June, we see notable differences in temperatures and precipitation. September features a wider temperature range, with minimums dipping to -10°C (15°F) and maximums reaching 21°C (70°F), while June has milder temperatures, ranging from -2°C (29°F) to a higher maximum of 27°C (81°F). Both months experience significant precipitation, but September sees slightly less, with 136 mm (5.3 in) compared to June's 148 mm (5.8 in), occurring over 15 and 19 days respectively. Humidity remains relatively consistent, with September at 83% and June at 82%. For more detailed information on weather trends, you can explore Thusis weather in June.
When examining the weather patterns of September and July, distinct differences emerge. September experiences a wider temperature range, with minimums dipping to -10°C (15°F) and maximums reaching up to 21°C (70°F), resulting in an average of 8°C (47°F). In contrast, July offers a milder climate, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 26°C (79°F), averaging 12°C (54°F). Both months see significant precipitation, with September receiving 136 mm (5.3 in) over 15 days, while July has slightly more at 148 mm (5.8 in) over 20 days. Notably, humidity levels remain constant at 83% for both months. For more detailed weather insights, check out Thusis weather in July.
In August, the weather tends to be warmer with average temperatures ranging from a minimum of 0°C (33°F) to a maximum of 24°C (76°F), compared to September's cooler conditions where the average temperature falls between -10°C (15°F) and 21°C (70°F). August also experiences higher precipitation, with 201 mm (7.9 in) over 19 days, while September sees a decrease to 136 mm (5.3 in) over 15 days. Humidity levels are relatively similar, with August at 80% and September slightly higher at 83%. For a closer look at the specifics of August weather, you can visit Thusis weather in August.
In comparing the weather of September and October, noticeable shifts can be observed. September experiences milder conditions with average temperatures around 8°C (47°F), ranging from a minimum of -10°C (15°F) to a maximum of 21°C (70°F). In contrast, October sees a decrease in average temperature to 4°C (40°F), with a range from -8°C (17°F) to 17°C (62°F).
While September has slightly lower precipitation at 136 mm (5.3 in) over 15 days, October sees a slight increase to 142 mm (5.6 in) but with fewer rainy days, totaling only 12. Additionally, October's humidity rises to 90%, compared to September's 83%, contributing to a cooler, more damp atmosphere. For more details on the weather conditions specific to Thusis in October, you can check this link: Thusis weather in October.
September and November present quite a contrast in weather conditions. In September, the temperatures range from a chilly -10°C to a pleasant 21°C, with an average of 8°C, and the month sees around 136 mm of precipitation over 15 days, alongside a humidity level of 83%. By November, the situation shifts considerably; the minimum temperature drops to -19°C, while the average plummets to -2°C, leading to cooler days with a maximum of just 13°C. Precipitation also decreases to 104 mm over 13 days, but humidity rises slightly to 88%. For more details on what to expect in November, check out Thusis weather in November.
In September, the weather presents a mild transition into the cooler seasons, with temperatures ranging from a chilly minimum of -10°C (15°F) to a pleasant maximum of 21°C (70°F). The average temperature hovers around 8°C (47°F), while precipitation levels reach 136 mm (5.3 in) over approximately 15 days. Humidity is relatively high at 83%, contributing to a typically brisk feel.
In contrast, December ushers in much colder conditions, with temperatures plummeting to a frigid minimum of -26°C (-15°F) and averaging -6°C (21°F), peaking at a maximum of just 6°C (42°F). Precipitation slightly decreases to 130 mm (5.1 in) but occurs over 17 days, while humidity rises to 90%, adding to the icy atmosphere. For a closer look at December weather conditions, visit Thusis weather in December.
As September unfolds in Thusis, the weather presents a fascinating transition from the warmth of summer to the crispness of autumn. With mild maximum temperatures around 21°C, contrasting sharply with cooler averages of 8°C, this month serves as a bridge to the impending chill. The frequent precipitation, seen on about 15 days, contributes to the landscape's lushness, while humidity levels hovering around 83% add a touch of damp crispness to the air. Therefore, September stands out as a time of transformation, where one can experience vast differences in daily temperatures and the lingering remnants of summer rains. To learn more about what to expect throughout the year, visit Thusis Climate.