Last updated: August 27, 2025
September in Caux, Switzerland presents a delightful mix of mild temperatures and refreshing conditions. With a maximum of 26°C (78°F), the warmth is complemented by a comfortable average temperature of 13°C (56°F), while cool nights can dip to 1°C (34°F). Visitors can expect 100 mm (3.9 in) of precipitation over approximately 13 days, contributing to the region's lush greenery and vibrant autumn hues. A notable humidity level of 81% enhances the crispness of the air, making September an ideal time for outdoor adventures in this picturesque alpine setting.
September in Caux, Switzerland marks a transition into milder temperatures as summer fades into autumn. With a minimum of 1°C (34°F) and an average of 13°C (56°F), the early chill invites sweaters while maintaining pleasant days, where highs can reach up to 26°C (78°F). This month beautifully balances lingering warmth from summer, making it ideal for outdoor activities against a backdrop of stunning fall foliage. As temperatures trend toward cooler evenings, visitors can relish the fresh mountain air and spectacular views, embodying the charm of early autumn in this picturesque region.
In September, Caux, Switzerland, experiences a transition in its weather patterns, marked by an average precipitation of 100 mm (3.9 in) over 13 days. This represents a notable decrease compared to the wetter months of May through August, where rainfall often peaked, particularly in May with 182 mm (7.2 in). As the summer warmth begins to wane, the region enjoys a lighter, yet consistent, rainfall that ushers in the onset of autumn. The shift from more frequent summer showers to a gentler fall precipitation lays the groundwork for the impressive winter snows that follow, highlighting Caux's dynamic climate and the seasonal changes it undergoes.
September in Caux, Switzerland, ushers in a slight uptick in humidity, settling at 81%, reminiscent of the summer months. This marks a subtle rebound from the 77% humidity recorded in August, indicating that the warm summer air lingers before the crisp autumn fully sets in. Over the course of the year, humidity levels see a predictable pattern: a gradual decline from the winter months, peaking in January at an impressive 91%, before beginning to rise again as the year shifts toward October. As the leaves start to change, September’s humidity strikes a balance, hinting at the transition into the wetter season, which typically features higher moisture levels in the fall and winter months. This rhythmic dance of humidity illustrates the charming climate shifts that make Caux such a unique destination throughout the year.
As summer transitions to autumn in Caux, Switzerland, the September UV Index reflects a notable shift in sun exposure, dropping to a high level of 7. This decrease from the very high indices of previous months signals a shift in the sun's intensity, yet caution is still warranted as a burn can occur in just 25 minutes. Throughout the earlier months of summer, the UV Index hovered at 9 and 10, urging residents and visitors to limit their sun exposure significantly. As we enter September, although the risk is lower, it's essential to remain vigilant—protective measures like sunscreen are still advisable for those enjoying the lush surroundings. For more on UV levels in this picturesque locale, check out the Caux UV Index.
UV Risk Categories
As summer gracefully transitions to autumn, September in Caux, Switzerland brings a delightful mix of warmth and mellow sunshine. With 330 hours of sunlight, it stands as a vibrant bridge between the sunny heights of July (418 hours) and the cooler days of October (288 hours). This month, though it sees a decrease from the glorious summer, still boasts significantly more sunlight than the early winter months, like November (229 hours) and December (197 hours). The gradual decline in daylight hours hints at the changing seasons, yet September remains a cherished time, inviting visitors to bask in its golden warmth before the chill sets in.
In Caux, Switzerland, September brings a sense of transition as summer wanes and autumn begins to take hold. With a sunshine probability of 37%, this month showcases a consistent trend seen throughout the warmer season. Although slightly lower than earlier summer months like July and August, the likelihood of sunny days remains stable, aligning closely with the slightly higher chances noted in the preceding October. This steady percentage suggests that visitors can still hope for pleasant weather for outdoor pursuits, though the charm of early autumn foliage adds its own beauty to the landscape even on cloudier days.
As September unfolds in Caux, Switzerland, daylight begins to gracefully wane, offering about 12 hours of sunlight—a subtle transition from the sun-drenched days of summer. This month reflects a significant drop from the bright, 15 hours of daylight seen in June, July, and August, marking a shift towards the cozier embrace of autumn. While the days are still longer than those of the chillier months that follow, September's fading light hints at the natural cycle of the seasons, bridging the gap between the vibrant warmth of late summer and the introspective quiet of winter. As twilight descends earlier, residents and visitors alike are reminded to savor each sunset, heralding the beauty of change in this picturesque Swiss landscape.
As autumn approaches in Caux, Switzerland, the September winds reveal a gentle whisper, with an average speed of just 1.2 m/s (3 mph). This marks a noticeable decline from the slightly breezier summer months, reflecting a trend of diminishing winds as the year shifts towards cooler temperatures. The steady rhythm of the winds from January through August fluctuates between 1.3 to 1.7 m/s, but September offers a softer breeze, inviting a serene transition into fall. This tranquil air, coupled with the stunning Alpine backdrop, creates a picturesque setting, perfect for reflection and enjoyment of nature’s beauty before winter sets in.
Weather in Caux varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Caux, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather in Caux is marked by a mild average temperature of 13°C (56°F), with highs reaching up to 26°C (78°F), making it a pleasant early autumn month. The humidity is relatively high at 81%, and the region experiences approximately 100 mm (3.9 in) of precipitation over 13 days. In contrast, January is significantly colder, with an average temperature of -2°C (29°F) and lows plummeting to -17°C (1°F). This winter month receives a higher precipitation of 132 mm (5.2 in) spread over 11 days, and the humidity also rises slightly to 91%. For more detailed information, check out Caux weather in January.
September and February present notably different 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 sees around 100 mm (3.9 in) of precipitation over approximately 13 days, and the humidity is relatively high at 81%. In contrast, February experiences much colder conditions, with a notable minimum temperature of -15°C (4°F) and a maximum of 15°C (59°F), averaging just 1°C (34°F). This month is slightly wetter, with 106 mm (4.2 in) of precipitation over 11 days, accompanied by even higher humidity at 89%. For more details, you can check Caux weather in February.
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 sees around 100 mm (3.9 in) of rain spread over 13 days, and humidity levels sit at 81%, creating a comfortable yet slightly moist atmosphere. In contrast, March experiences colder temperatures, with lows dropping to -16°C (4°F) and daytime highs reaching 18°C (65°F), averaging around 3°C (38°F). This month also has a higher rainfall of 135 mm (5.3 in) over 15 days, resulting in increased humidity at 87%. For more detailed weather insights, you can check Caux weather in March.
September and April showcase distinct weather patterns and temperatures. In September, temperatures range from a cool 1°C (34°F) at night to a pleasant average of 13°C (56°F) during the day, peaking at a comfortable 26°C (78°F). In contrast, April begins with colder nights, dropping to a chilly -12°C (10°F) and averages 7°C (45°F) during the day, with a maximum of 22°C (72°F). While September experiences 100 mm of precipitation over 13 days and maintains a humidity level of 81%, April is slightly drier with 76 mm of rain over 12 days, and a marginally higher humidity of 84%. For a deeper insight into April weather, you can refer to Caux weather in April.
September and May present contrasting weather patterns. September tends to be warmer, with average temperatures reaching 13°C (56°F) and maximums soaring up to 26°C (78°F), while May has slightly cooler average temperatures of 11°C (51°F) and peaks at 27°C (81°F). However, May experiences more precipitation, totaling 182 mm (7.2 in) over 19 days compared to September's 100 mm (3.9 in) across 13 days, which contributes to a similarly high humidity level of 80% in May and 81% in September. For more details, you can explore Caux weather in May.
When comparing the weather in September and June, we can see notable differences in temperature and precipitation. September experiences a temperature range from a chilly 1°C (34°F) to a warm 26°C (78°F), with an average of 13°C (56°F). In contrast, June is generally warmer, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 32°C (89°F), resulting in an average of 16°C (60°F).
However, June also sees higher precipitation levels, with 159 mm (6.3 in) falling over 18 days, compared to September's 100 mm (3.9 in) over just 13 days. Both months have similar humidity levels, with September at 81% and June slightly higher at 82%. If you're interested in exploring more about the weather specifics for June, check out Caux weather in June.
In comparing the weather of September and July, we notice significant differences in temperature and precipitation patterns. September sees a lower temperature range, with minimums of 1°C (34°F) and maximums reaching 26°C (78°F), while July boasts a milder minimum of 6°C (44°F) and a warmer maximum of 32°C (90°F). Precipitation is more pronounced in July, totaling 165 mm (6.5 in) over 16 days, compared to September’s 100 mm (3.9 in) across 13 days, suggesting that July is both wetter and warmer. Humidity levels are fairly comparable, with September at 81% and July slightly higher at 82%. For those interested in more details, you can check out Caux weather in July.
In comparing the weather between September and August, September experiences cooler temperatures with a minimum of 1°C (34°F) and an average of 13°C (56°F), while August is warmer, featuring a minimum of 6°C (43°F) and an average of 17°C (62°F). The maximum temperatures in August reach up to 30°C (86°F), compared to a maximum of 26°C (78°F) in September. Additionally, September sees an increase in humidity at 81% with 100 mm (3.9 in) of precipitation over 13 days, while August, with 152 mm (6.0 in) of precipitation over 15 days, maintains a slightly lower humidity level of 77%. For a closer look at August weather, you can explore Caux weather in August.
September and October display a noticeable shift in 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 sees about 100 mm (3.9 in) of precipitation spread over 13 days, accompanied by a humidity level of 81%. In contrast, October temperatures dip further, with a minimum of 0°C (32°F), an average of 9°C (48°F), and a maximum of 22°C (72°F). Precipitation increases slightly to 120 mm (4.7 in), still over 13 days, and humidity rises to 89%. For more details on October weather, you can check Caux weather in October.
In September, the weather presents a mild range of temperatures with a minimum of 1°C (34°F) and a pleasant average of 13°C (56°F), peaking at a comfortable 26°C (78°F). With a total precipitation of 100 mm (3.9 in) spread over 13 days, humidity levels sit at 81%. In contrast, November ushers in a markedly cooler climate, characterized by a minimum temperature of -8°C (17°F) and a lower average of 4°C (39°F), with a maximum reaching 18°C (64°F). This month sees slightly higher precipitation at 106 mm (4.2 in) over the same number of rainy days, coupled with increased humidity at 89%. For more details about the weather during November, you can check out Caux 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), averaging around 13°C (56°F). The month experiences about 100 mm (3.9 in) of precipitation over 13 days, with humidity levels at 81%. In contrast, December brings much colder temperatures, with a minimum of -16°C (3°F), an average of 0°C (32°F), and a maximum of 11°C (52°F). Precipitation increases significantly to 208 mm (8.2 in) spread across 18 days, accompanied by higher humidity at 91%. For a detailed look at winter conditions, you can check the Caux weather in December.
As September rolls in, Caux experiences a shift in weather that distinctly contrasts with the warmer summer months. While daytime temperatures can reach a comfortable 26°C (78°F), the overall average cools to a brisk 13°C (56°F), inviting a hint of autumn into the air. With precipitation recorded on about 13 days and a total of 100 mm (3.9 in), September tends to be more humid, averaging 81%, making it one of the wetter months. This blend of warmth, coolness, and increased rainfall creates a unique atmosphere, perfect for enjoying the changing scenery. For a deeper insight into Caux's weather patterns, visit Caux Climate.