Last updated: February 26, 2025
September in Saint-Gervais-les-Bains brings a blend of mild temperatures and a hint of early autumn chill. With a maximum temperature reaching 21°C (71°F) and an average of 10°C (49°F), visitors can enjoy comfortable days, although nights can dip to a crisp -8°C (19°F). The month is marked by a significant 109 mm (4.3 in) of precipitation across 16 days, contributing to the lush landscapes of the region. Humidity levels hover around 73%, encapsulating the essence of this serene Alpine town as it transitions into fall. Embrace the charm of September in Saint-Gervais-les-Bains, where nature’s beauty thrives amid soft autumn hues.
As September arrives in Saint-Gervais-les-Bains, temperatures gradually shift from the warm embrace of summer to the crispness of autumn. With minimums dipping to -8°C (19°F) and an average around 10°C (49°F), the air begins to cool, offering a refreshing contrast to the hotter months. The maximums reach up to 21°C (71°F), allowing for pleasant daytime outings amidst the stunning alpine backdrop. This transition highlights a blend of summer's lingering warmth and autumn's early chill, making it an ideal time for hiking and outdoor adventures as the landscape transforms.
September in Saint-Gervais-les-Bains brings a noticeable shift in precipitation patterns, with 109 mm (4.3 in) of rain falling over 16 days. This marks a decline from the summer months, where May, with its peak of 224 mm (8.8 in), significantly contributed to the region's overall wetter atmosphere. As temperatures begin to cool, the frequency of rain days decreases slightly from August's 17 days, indicating the transition towards autumn. While September remains one of the wetter months, particularly compared to the drier spell anticipated in October with 133 mm (5.3 in), this month still provides a tapestry of nature's rhythms, preparing the landscape for the forthcoming change in seasons.
As the summer warmth begins to wane, September in Saint-Gervais-les-Bains ushers in a slight uptick in humidity, reaching 73%. This marks a notable shift from the drier summer months, where humidity dipped to a low of 63% in August. Following the trend of transitioning from summer to autumn, September's levels reflect a balance between the lingering warmth and the approaching chill of fall. As the year progresses, humidity levels will rise dramatically once again, culminating in the winter months, with values soaring to 89% in October and peaking at 91% in January. Overall, the fluctuations in humidity throughout the year capture the dynamic climate of this picturesque region, where each season brings its own unique character.
As September arrives in Saint-Gervais-les-Bains, the UV Index reflects a notable shift from the peak summer months. With a UV Index of 7, categorized as high, residents and visitors should be mindful of their sun exposure, as burn time is reduced to 25 minutes. This decline from the intense UV levels of June and July, which both reached a peak of 10, marks the transition into fall while still retaining significant sun intensity. As the sunlight begins to soften, it's essential to strike a balance between enjoying the outdoors and protecting your skin. For detailed insights on UV levels throughout the year, visit Saint-Gervais-les-Bains UV Index.
UV Risk Categories
As summer bids farewell, September in Saint-Gervais-les-Bains continues to bask in abundant sunshine, offering 331 hours of glorious daylight. This month marks a transitional period where the warmth of July and August, which boast 422 and 392 hours respectively, begins to taper. Yet, September retains a generous amount of sunlight, surpassing earlier months like October and November, which drop to 291 and 228 hours. Overall, this gradual decline in daylight showcases the beautiful rhythm of the seasons, making September an ideal time to soak up the last rays of summer while the scenery transforms into a tapestry of autumn hues.
In Saint-Gervais-les-Bains, September brings a 30% chance of sunny weather, marking a transition as summer fades into autumn. While this likelihood is a tad lower than the peak of the summer months—July and August, which boast chances of 33% and 37%, respectively—it's noteworthy that September still enjoys greater sunshine potential compared to the drearier winter months. As the region shifts from the warmth of summer, it maintains a respectable sun visibility, especially when compared to its preceding months, May and June, which see lower probabilities at 26% and 29%. With October showing a promising 45% chance of sun, there's a subtle yet uplifting trend emerging in late summer and early autumn, making September a lovely time to enjoy the scenic beauty of the French Alps.
As September rolls into Saint-Gervais-les-Bains, a gentle transition unfolds in the daylight hours, offering 12 hours of sunlight—a delightful balance as summer waves goodbye. Following the peak of 15 hours in June and July, the daylight begins its gradual decline, reflecting the onset of autumn. This month signals a shift from the exuberance of summer, with 14 hours in August, to the softer, shorter days ahead, heralding the cozy embrace of October's 10 hours. The rhythmic ebb and flow of daylight throughout the year not only highlights nature’s changing palette but also invites inhabitants and visitors alike to relish the enchanting blend of lingering warmth and early autumn's crispness.
As September unfolds in Saint-Gervais-les-Bains, the air takes on a gentle serenity with an average wind speed of just 1.0 m/s (2 mph), marking it as the calmest month of the year. This tranquil breeze contrasts with the more spirited winds of late spring and summer, which hover around 1.1 to 1.3 m/s (3 mph). Interestingly, the wind tends to decrease slightly in September, hinting at the onset of autumn's embrace. As nature prepares for the transition into cooler months, the soft winds carry a whisper of change, inviting visitors to enjoy the serene landscapes and picturesque alpine views.
The weather in Saint-Gervais-les-Bains changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Saint-Gervais-les-Bains and find detailed weather information for every month.
September weather is generally milder compared to January, with average temperatures around 10°C (49°F) and a maximum reaching 21°C (71°F). In contrast, January's temperatures plunge, with an average of -8°C (19°F) and highs only reaching 6°C (44°F). While September sees a moderate amount of precipitation at 109 mm (4.3 in) over 16 days, January is wetter, with 171 mm (6.7 in) spread across just 10 days, resulting in higher humidity levels at 91%. For a detailed look at January conditions, check out Saint-Gervais-les-Bains weather in January.
When comparing the weather in September and February, notable differences emerge. September typically sees milder temperatures, with a minimum of -8°C (19°F) and an average of 10°C (49°F), while February experiences much colder conditions, with a minimum of -21°C (-5°F) and an average of -4°C (26°F). Precipitation also varies between the two months; September receives 109 mm (4.3 in) of rain over 16 days, while February has slightly higher precipitation at 141 mm (5.5 in) but over just 11 days. Additionally, February tends to be more humid, with levels reaching 87% compared to September's 73%. For a closer look at February's weather patterns, you can check out Saint-Gervais-les-Bains weather in February.
In September, the weather in Saint-Gervais-les-Bains is generally milder, with temperatures ranging from a minimum of -8°C (19°F) to a maximum of 21°C (71°F) and an average of 10°C (49°F). The month experiences about 109 mm (4.3 in) of precipitation over 16 days, with a humidity level of 73%. In contrast, March brings much colder conditions, with temperatures dropping to a minimum of -25°C (-12°F) and reaching a maximum of 14°C (58°F), averaging around -1°C (31°F). Precipitation is higher during this month at 175 mm (6.9 in) over 15 days, alongside a higher humidity level of 84%. For more detailed insights, you can visit Saint-Gervais-les-Bains weather in March.
When comparing the weather in September and April, notable differences emerge. September tends to be warmer, with average temperatures around 10°C (49°F) and a maximum of 21°C (71°F), while April experiences a chillier average of 3°C (38°F), peaking at 17°C (63°F). Additionally, September has higher humidity levels at 73% compared to April’s 83%, although April sees slightly less precipitation overall, with 84 mm (3.3 in) compared to September's 109 mm (4.3 in) spread over fewer days. For those interested in a detailed view of April weather specifics, you can visit Saint-Gervais-les-Bains weather in April.
When comparing the weather in September and May, several key differences emerge. September generally offers milder temperatures, with an average of 10°C (49°F) and a maximum reaching 21°C (71°F), while May sees a lower average at 7°C (45°F) and a max of 23°C (74°F). However, May experiences significantly more precipitation, accumulating 224 mm (8.8 in) over 21 days, compared to September's 109 mm (4.3 in) over 16 days. Additionally, humidity is slightly higher in May at 78% versus September's 73%. For more detailed information, you can check Saint-Gervais-les-Bains weather in May.
Comparing the weather in September and June reveals distinct seasonal differences. In September, temperatures range from a minimum of -8°C (19°F) to a maximum of 21°C (71°F), with an average of 10°C (49°F). The month experiences 109 mm (4.3 in) of precipitation over about 16 days and maintains a humidity level of 73%. Conversely, June boasts warmer temperatures, with a minimum of -3°C (28°F) and a maximum of 28°C (83°F), averaging 12°C (54°F). Rainfall is higher in June, with 167 mm (6.6 in) spread across 20 days, and humidity is slightly higher at 75%. For more detailed information about June weather, you can visit Saint-Gervais-les-Bains weather in June. Overall, June offers milder conditions than September, albeit with more frequent rain.
When comparing the weather in September and July, it's clear that September experiences cooler temperatures, with a minimum of -8°C (19°F) and an average of 10°C (49°F), while July boasts warmer temperatures, with a minimum of 2°C (36°F) and an average of 14°C (57°F). In July, temperatures can reach a maximum of 27°C (81°F), significantly higher than September's maximum of 21°C (71°F). Precipitation is also heavier in July, with 162 mm (6.4 in) over 18 days compared to September's 109 mm (4.3 in) over 16 days. Humidity levels are quite similar, with September at 73% and July slightly lower at 72%. For more details, check Saint-Gervais-les-Bains weather in July.
In comparing the weather of September to that of August, September experiences a notable drop in temperature, with an average of 10°C (49°F) compared to August's warmer average of 13°C (56°F). The maximum temperature in September reaches only 21°C (71°F), while August peaks at 25°C (77°F). Additionally, September is slightly wetter, with 109 mm (4.3 in) of precipitation over 16 days, in contrast to August's 149 mm (5.9 in) spread over 17 days. September also has higher humidity levels at 73%, compared to August's 63%. For more detailed insights, you can check Saint-Gervais-les-Bains weather in August.
September and October exhibit notable differences in weather patterns. While September enjoys average temperatures around 10°C (49°F) with maximums reaching 21°C (71°F), October sees a decline in both average and maximum temperatures, averaging just 5°C (42°F) and peaking at 18°C (65°F). Additionally, October tends to be wetter, with increased precipitation of 133 mm (5.3 in) over 13 days, compared to September's 109 mm (4.3 in) across 16 days. The humidity also rises significantly in October, reaching 89%, compared to 73% in September. For more detailed insights, you can check out Saint-Gervais-les-Bains weather in October.
September and November exhibit notable differences in weather patterns. September tends to be milder, with average temperatures ranging from a minimum of -8°C (19°F) to a maximum of 21°C (71°F) and an average of 10°C (49°F). It experiences 109 mm (4.3 in) of precipitation over 16 days, with humidity at 73%. In contrast, November becomes significantly colder, recording a minimum temperature of -18°C (-1°F) and an average temperature of -1°C (30°F), while peaking at 15°C (60°F). Although precipitation increases slightly to 120 mm (4.7 in) during 13 days, the humidity rises to 90%, contributing to a chillier atmosphere. For more details on November weather, check Saint-Gervais-les-Bains weather in November.
September and December present strikingly different weather patterns. In September, temperatures range from a minimum of -8°C (19°F) to a pleasant average of 10°C (49°F), peaking at 21°C (71°F), accompanied by 109 mm (4.3 in) of precipitation over about 16 days and a humidity level of 73%. In contrast, December sees a much colder climate with temperatures dropping to a minimum of -23°C (-8°F) and an average of -6°C (22°F), reaching a maximum of 8°C (46°F). Precipitation rises significantly to 295 mm (11.6 in) across 19 days, coupled with a higher humidity of 90%. For more details on the frigid conditions, check out Saint-Gervais-les-Bains weather in December.
As September graces Saint-Gervais-les-Bains, the weather begins to shift noticeably from the summer's warmth. The days are marked by milder temperatures, with a refreshing coolness setting in, especially during the nights. Unlike the drier summer months, September sees a moderate amount of precipitation, with the sky opening up on about half of the days. The air is filled with a crisp, invigorating humidity that can make the scenic landscapes even more enchanting. This transition not only enhances the beauty of the region but also invites visitors to experience the local charm before the winter chill arrives. For more about seasonal changes and detailed climate insights, check out Saint-Gervais-les-Bains Climate.