Last updated: August 27, 2025
September in Celerina, Switzerland, showcases a fluctuating climate, with temperatures ranging from a maximum of 18°C (65°F) to a minimum of -12°C (11°F) and an average of 6°C (44°F). This month witnesses a generous 126 mm (5.0 in) of precipitation spread over 15 days, contributing to the region's lush landscapes and vibrant autumn colors. Humidity levels remain relatively high at 83%, creating a crisp atmosphere that envelops the scenic beauty of the Swiss Alps. Embrace September's charm, where every weather pattern tells a story of nature’s breathtaking transitions.
In September, Celerina, Switzerland begins to feel the subtle shifts of autumn, with temperatures showcasing a remarkable transition from summer warmth to crisp fall air. The month's temperature ranges from a fresh minimum of -12°C (11°F) to a pleasant maximum of 18°C (65°F), offering a comfortable average of 6°C (44°F). This represents a gradual cooling trend as the vibrant summer days recede, allowing visitors to enjoy the stunning alpine scenery without the heat. Although the temperatures drop compared to the preceding months, September often delights with clear skies and the start of autumn foliage, making it a wonderful time for outdoor exploration in this picturesque Swiss village.
In September, Celerina experiences a notable shift in precipitation patterns, with 126 mm (5.0 in) of rainfall spread across 15 days. This amount marks a decline from the peak summer months of August but maintains a healthy average compared to earlier in the year. As the transition into autumn unfolds, the reduced precipitation days suggest a more temperate climate, yet the total rainfall remains significant enough to nourish the lush alpine surroundings. With the summer rain easings, September offers a fascinating balance of cooler temperatures and manageable rainfall, setting the stage for the crispness of fall.
As summer gives way to autumn, September in Celerina, Switzerland, experiences a slight uptick in humidity, settling at 83%. This marks a subtle rise from the 80% in August, suggesting a lingering warmth in the air as the region transitions into the cooler months. Notably, humidity levels begin to climb again after their summer lows, hinting at the onset of wetter, more serene conditions that typically characterize the latter part of the year. The shift is evident as Celerina prepares for the impending embrace of winter, where humidity peaks once more in October and beyond, reaching 90% in both October and December. This seasonal pattern highlights a fascinating dance between warmth and moisture, creating a dynamic atmosphere that residents and visitors alike can appreciate.
In September, Celerina experiences a UV Index of 7, indicating a high exposure category with a burn time of 25 minutes. This month marks a notable drop from the peak intensity of the summer months, yet caution is still advised, particularly for those spending extended time outdoors. As we transition from the sun-drenched days of July and August, this gradual decline in UV levels reflects the changing seasons, reminding everyone to stay sun-smart even as autumn approaches. For detailed insights and updates on UV exposure in Celerina, visit Celerina UV Index.
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As September arrives in Celerina, Switzerland, the warmth of summer lingers with 309 hours of sunshine, offering a delightful transition into autumn. This month continues the upward trend initiated in spring, with sunshine hours peaking at 410 in July before gradually descending. Unlike the prior months that bristled with ultraviolet energy, September serves as a gentle reminder of the changing seasons, presenting a balanced blend of light as the vibrant foliage begins to unfold. Compared to earlier months, this sunshine tally still reflects a generous share of daylight, maintaining the region's charm before the sun retreats further during the colder months ahead. As the days shorten, Celerina invites you to bask in the last remnants of summer’s glow, making September a truly enchanting time to experience this alpine haven.
In Celerina, Switzerland, the likelihood of sunny weather in September tends to hover around 26%, which reflects a slight dip compared to the summer months of July and August. As we transition from the vibrant warmth of summer, the chances of sun decrease, aligning more closely with the autumn months that follow. Interestingly, this trend is not isolated to September; many parts of the year show fluctuating sunshine probabilities, peaking in late winter and early spring before settling into a steadier rhythm in the fall. Overall, while the sun may not blaze as brightly in September, the picturesque landscapes of the Alps still shimmer with a charm all their own.
As summer's warmth gradually yields to the embrace of autumn, September in Celerina, Switzerland, offers a charming transition with about 12 hours of daylight. This decline from the 15 hours seen in June through August reflects nature's rhythm, inviting a calming shift in the season. As days shorten, the vibrant colors of fall begin to paint the landscape, creating a picturesque backdrop for outdoor adventures. This gradual reduction in daylight serves as a gentle reminder of the approaching winter, while still offering ample light to savor the last moments of summer's splendor. The ebb and flow of daylight throughout the year truly highlight the beauty and cyclical nature of life in this alpine paradise.
As September ushers in the arrival of autumn in Celerina, Switzerland, the winds noticeably soften, with an average speed of 1.2 m/s (3 mph)—one of the calmest months of the year. This marks a subtle decline from the summer months, where the winds consistently reached 1.7 m/s (4 mph). The earlier seasons demonstrated a gentle yet persistent breeze, highlighting a steady trend of mild conditions from January to August. As Celerina transitions towards the cooler months, the breeze picks up again in October, hinting at the impending change in weather while still allowing for those serene, wind-kissed afternoons that define the Swiss alpine landscape.
Weather in Celerina varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Celerina, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures range from a chilly -12°C (11°F) at their lowest to a mild 18°C (65°F) at their peak, with an average around 6°C (44°F). The month experiences substantial precipitation, totaling 126 mm (5.0 in) over approximately 15 days, accompanied by a humidity level of 83%. In contrast, January sees much harsher conditions, with minimum temperatures plummeting to -27°C (-17°F) and a maximum of just 2°C (36°F), leading to an average of -11°C (12°F). This winter month receives less precipitation, at 75 mm (2.9 in) over 10 days, yet the humidity is higher, at 92%. For a closer look at the chilly conditions, check out Celerina weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a chilly minimum of -12°C (11°F) to a comfortable maximum of 18°C (65°F), with an average of 6°C (44°F). This month also experiences significant precipitation, totaling 126 mm (5.0 in) over about 15 days, combined with relatively high humidity at 83%. In stark contrast, February sees even colder conditions, with temperatures dropping to a minimum of -28°C (-18°F) and an average of -8°C (18°F), peaking at just 6°C (43°F). Precipitation is less frequent, accumulating to 59 mm (2.3 in) over 11 days, and humidity rises slightly to 89%. For more insights into February weather specifics, you can refer to Celerina weather in February.
When comparing the weather in September and March, notable differences emerge. September experiences milder conditions with an average temperature of 6°C (44°F), peaking at a comfortable 18°C (65°F), while March is much colder with temperatures averaging -5°C (23°F) and a maximum of only 11°C (52°F). Precipitation is more frequent in September, occurring over 15 days with a total of 126 mm (5.0 in), compared to March, which sees 90 mm (3.5 in) over 13 days. Additionally, humidity levels remain high in both months at 83% in September and 87% in March, contributing to the distinctly cooler feel during the latter. For more detailed insights into March weather, you can check Celerina weather in March.
In comparing the weather between September and April, September tends to be milder, with average temperatures ranging from -12°C (11°F) at night to a pleasant max of 18°C (65°F) during the day, while April experiences colder conditions, with nighttime lows dropping to -19°C (-1°F) and maximums peaking at only 12°C (54°F). Precipitation is relatively high in both months, but September sees more rain, measuring 126 mm (5.0 in) over 15 days compared to April's 99 mm (3.9 in) across 12 days. Humidity levels are similar, with September at 83% and April slightly higher at 84%. For more detailed insights on April weather, you can visit Celerina weather in April.
September and May exhibit similar maximum temperatures, both reaching up to 18°C (65°F), but their overall weather characteristics differ notably. In September, the average temperature hovers around 6°C (44°F) with a minimum of -12°C (11°F), while May has slightly cooler average conditions at 3°C (38°F) and a minimum of -13°C (8°F). Precipitation levels are higher in May, accumulating to 150 mm (5.9 in) over 22 days, compared to September's 126 mm (5.0 in) across 15 days. Humidity is also a bit higher in September at 83%, whereas May maintains a humidity level of 80%. For a closer look at specific conditions, check out Celerina weather in May.
In comparing the weather of September and June, we see distinct differences in temperature and precipitation patterns. September experiences a broader temperature range with minimums dipping to -12°C (11°F) and maximums reaching 18°C (65°F), resulting in an average of 6°C (44°F). In contrast, June is generally warmer, with minimum temperatures around -2°C (28°F) and highs peaking at 25°C (77°F), leading to an average of 9°C (49°F). Precipitation is slightly less in September at 126 mm (5.0 in) across about 15 days, compared to June's 159 mm (6.3 in) over 19 days. Humidity levels remain comparable, with September at 83% and June slightly lower at 82%. For a more detailed look at the June weather, check out Celerina weather in June.
In comparing the weather of September and July, it’s evident that September experiences cooler temperatures, with a minimum of -12°C (11°F) and an average of 6°C (44°F), while July enjoys milder conditions, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 23°C (73°F). Precipitation is slightly higher in July, totaling 159 mm (6.3 in) over 21 days, compared to September’s 126 mm (5.0 in) across 15 days. Interestingly, both months maintain the same humidity level at 83%, creating a consistently damp atmosphere. For more specifics on July weather, check out Celerina weather in July.
September generally experiences cooler temperatures compared to August, with minimums dropping to -12°C (11°F) and an average of 6°C (44°F), while August has a minimum temperature of 0°C (33°F) and averages at 10°C (51°F). The maximum temperature in September peaks at 18°C (65°F), compared to 21°C (70°F) in August. Although September has less total precipitation at 126 mm (5.0 in) over 15 days, it still presents a relatively humid environment with an 83% humidity level, slightly above August's 80% with 195 mm (7.7 in) over 21 days. For more detailed insights, check Celerina weather in August.
In September, temperatures in Celerina fluctuate between a minimum of -12°C (11°F) and a maximum of 18°C (65°F), with an average of 6°C (44°F). The month experiences about 126 mm (5.0 in) of precipitation over 15 days, accompanied by a humidity level of 83%. By contrast, October sees cooler temperatures, with a minimum of -10°C (14°F) and a maximum of 14°C (57°F), resulting in a lower average of 2°C (36°F). Furthermore, this month has even higher precipitation, totaling 148 mm (5.8 in) over 11 days, and increased humidity at 90%. To learn more about Celerina's October weather, visit Celerina weather in October.
September and November exhibit significant differences in weather characteristics. September is generally milder, with temperatures ranging from a minimum of -12°C (11°F) to a maximum of 18°C (65°F), averaging around 6°C (44°F). In contrast, November is considerably colder, featuring a minimum temperature of -22°C (-8°F) and a maximum of 8°C (47°F), with an average of -4°C (25°F). Both months see substantial precipitation, with September receiving 126 mm (5.0 in) over 15 days and November slightly higher at 132 mm (5.2 in) across 14 days. Humidity levels also rise from September's 83% to November's 88%. For a more detailed look at conditions, check out Celerina weather in November.
September and December weather conditions present a stark contrast. In September, temperatures range from a minimum of -12°C (11°F) to a maximum of 18°C (65°F), with an average of 6°C (44°F). This month experiences around 126 mm (5.0 in) of precipitation over about 15 days, accompanied by a humidity level of 83%. Conversely, December sees much colder temperatures, with a minimum of -26°C (-14°F), an average of -9°C (16°F), and a maximum of only 2°C (37°F). Precipitation remains relatively stable at 125 mm (4.9 in) over the same number of days, but with a slightly higher humidity of 90%. For a more detailed look into December's weather, you can visit Celerina weather in December.
As September rolls in, Celerina experiences a notable transition in its weather, marked by cool temperatures that gradually shift from the warmth of summer. With an average temperature of just 6°C, the crisp air becomes a defining feature, inviting visitors to revel in the colorful autumn landscapes. Unlike the heavier rainfall typical of the summer months, September sees moderate precipitation spread over approximately half the days of the month, creating a fresh, revitalizing atmosphere. With humidity levels peaking at 83%, the air feels both invigorating and refreshing as the days grow shorter. To explore more about how September weather fits into the broader climate patterns, visit Celerina Climate.