Last updated: February 26, 2025
As September unfolds in Val-d'Isère, France, the weather presents a captivating blend of crisp mountain air and varied conditions. Maximum temperatures can reach a pleasant 18°C (65°F), while average daytime warmth settles around 8°C (46°F), creating a refreshing atmosphere for outdoor activities. However, as the month progresses, temperatures can dip to a brisk -8°C (19°F) at night, reminding visitors of the approaching winter. Rainfall is frequent, with 91 mm (3.6 in) of precipitation spread over 17 days, contributing to a humidity level of 73%. This combination sets the stage for stunning autumn landscapes and invigorating alpine adventures in this enchanting resort town.
As summer transitions into autumn in Val-d'Isère, France, September brings a noticeable shift in temperatures. With minimums dipping to -8°C (19°F) and average temperatures settling around 8°C (46°F), the chill of impending winter begins to creep in. Days can still be pleasant, with a maximum reach of 18°C (65°F), offering a mild contrast to the colder months ahead. This month serves as a bridge between the warmth of summer and the frost of winter, highlighting the region's dramatic climatic shifts. Visitors can enjoy the tranquil beauty of early autumn while preparing for the snowy landscapes that will soon blanket the alpine wonderland.
September in Val-d'Isère, France, marks a transition with 91 mm (3.6 in) of precipitation over 17 days, reflecting a decrease from the heavier summer months. This drop aligns with the approaching autumn, as rainfall tapers off after the wetter conditions of May and June. The 17 precipitation days in September suggest a mix of light and occasional heavier showers, providing a refreshing backdrop to the changing foliage. As temperatures cool and the mountain scenery transforms, September acts as a gentle prelude to the more robust precipitation that blankets the region later in the fall and winter months, particularly December’s significant 190 mm (7.5 in). Thus, while September may see less rain than its preceding months, it sets the stage for the alpine beauty that defines Val-d'Isère.
As summer transitions to autumn, September in Val-d'Isere, France, experiences a slight uptick in humidity, reaching 73%. This marks a modest increase from the notably dry August, which recorded a low of 63%. Following a steady decline throughout the warmer months, where humidity dropped from 91% in January to 72% in July, September signifies a gentle return of moisture, setting the stage for the approaching winter. Interestingly, as the year progresses into October, humidity spikes again to 89%, hinting at the seasonal shifts that characterize this picturesque Alpine region. Overall, Val-d'Isere's humidity patterns reflect the rhythm of changing seasons, with September acting as a transitional month in the cycle.
September in Val-d'Isère, France, marks a transition as summer's heat begins to wane, yet the UV Index remains at a notable 8, categorizing it as very high. With a burn time of just 15 minutes, it's essential for outdoor enthusiasts to remain vigilant about sun protection, echoing the trends set from later summer months. While January starts the year with a moderate UV Index of 3, the values climb sharply through the spring (peaking at 10 in May) and into the early summer, where it hits an extreme level of 11 in June. Even as autumn approaches, the UV risks linger, especially in early September. For a deeper understanding of UV trends and safety tips, check out Val-d'Isere UV Index.
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In Val-d'Isere, September basks in a delightful 329 hours of sunshine, marking a gentle transition from the long, vibrant days of summer to the crispness of autumn. After peaking in July with an impressive 423 hours, the sunshine begins a gradual decline, but September still holds onto a substantial amount of light, outshining both October and November. This month showcases the tail end of summer's warm embrace, where the rich hues of the landscape come alive under the sun, inviting outdoor enthusiasts and nature lovers to revel in the scenic beauty. As the days shorten, Val-d'Isere still treats visitors to a sunlit paradise, perfect for hiking or simply soaking in the breathtaking views. The trend of fading sunlight continues into the cooler months, yet September remains a standout, a charming reminder of the sunny days that have defined the summer months.
In Val-d'Isère, France, September presents a 25% chance of sunny weather, a pattern that reflects the transitional nature of the month. As summer gives way to autumn, the likelihood of enjoying clear skies decreases from a peak in August at 48%. This trend highlights the diminishing warmth and sunlight as the region prepares for colder months, evidenced by a drop in sunshine probability not only from August but also when compared to the relatively sunnier summer months overall. In fact, it’s one of the less favorable months for sun-seekers, standing alongside June, which similarly offers a modest 25% chance. As visitors embrace the stunning fall foliage and the crisp mountain air, they may find that while sunny days are less frequent, the charm of Val-d'Isère remains undiminished.
As summer transitions into autumn, September in Val-d'Isère marks a subtle shift in daylight, offering around 12 hours of bright sunshine. This is a noticeable decline from the 15 hours experienced in the peak summer months of June and July, indicating the onset of shorter days. Following the vibrant month of August, which still boasted 14 hours of daylight, September serves as a gentle reminder that winter is on the horizon. The diminishing daylight is a continuation of the year’s gradual decline, where daylight hours peak in June and subsequently begin to fade, illustrating the rhythmic dance of the seasons in this beautiful French alpine town.
In September, the winds in Val-d'Isere whisper gently at an average speed of 1.2 m/s (3 mph), mirroring the calm atmosphere that descends as summer wanes. This slight breeze is part of a consistent pattern seen throughout the year, where wind speeds remain relatively stable, hovering around 1.2 to 1.5 m/s from January to December. With just a subtle decline in speed as summer fades, September serves as a transitional month, softly easing into the briskness of autumn and hinting at the arrival of winter's chill. As nature begins its shift, the steady winds invite adventurers to embrace the serene beauty of this alpine paradise before the snow blankets the landscape.
The weather in Val-d'Isere 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 Val-d'Isere and find detailed weather information for every month.
September and January present stark contrasts in weather conditions. In September, temperatures range from a minimum of -8°C (19°F) to a maximum of 18°C (65°F), with an average of around 8°C (46°F) and precipitation totaling 91 mm (3.6 in) over 17 days. The humidity is relatively moderate at 73%. In contrast, January plunges to much colder averages, with temperatures as low as -25°C (-12°F) and a peak of just 5°C (41°F) for an average of -9°C (16°F). Rainfall increases to 132 mm (5.2 in) over 10 days, accompanied by higher humidity levels of 91%. For those interested in a deeper look at the January weather specifics, check out Val-d'Isere weather in January.
Comparing the weather in September and February reveals significant differences in temperature and conditions. September experiences milder temperatures with a minimum of -8°C (19°F) and an average of 8°C (46°F), peaking at 18°C (65°F), making it a relatively pleasant month. In contrast, February is much colder, with temperatures ranging from a minimum of -21°C (-6°F) to an average of -6°C (22°F) and a maximum of 8°C (47°F). Although both months see similar levels of precipitation—91 mm (3.6 in) in September versus 87 mm (3.4 in) in February—the humidity is notably higher in February at 87%, compared to 73% in September. For more detailed information about February weather, visit Val-d'Isere weather in February.
September and March present distinct weather profiles, reflecting the transition between seasons. In September, temperatures range from a low of -8°C (19°F) to a comfortable high of 18°C (65°F), leading to an average of 8°C (46°F). This month experiences 91 mm (3.6 in) of precipitation over 17 days, coupled with a humidity level of 73%. In contrast, March is significantly colder, with temperatures dipping to a minimum of -24°C (-11°F) and peaking at 10°C (50°F), yielding an average of -4°C (25°F). This month sees a higher precipitation level of 125 mm (4.9 in) spread over 16 days, accompanied by increased humidity at 84%. For more detailed insights into the weather specifics for March, you can visit Val-d'Isere weather in March.
When comparing the weather in September and April, September tends to be milder with an average temperature of 8°C (46°F) and a maximum of 18°C (65°F), while April is colder, averaging just 0°C (32°F) and peaking at 12°C (54°F). Precipitation is relatively high in both months, with September receiving 91 mm (3.6 in) over 17 days compared to April's 110 mm (4.3 in) spread over 13 days. Humidity levels are slightly higher in April at 83%, compared to 73% in September, contributing to a distinctively different feel in the air. For more detailed information about the weather in April, you can check Val-d'Isere weather in April.
When comparing the weather in September and May, we see some notable differences. September features a slightly warmer average temperature of 8°C (46°F) compared to May's average of 4°C (39°F), although both months have the same maximum temperature of 18°C (65°F). However, May tends to be wetter, with precipitation reaching 181 mm (7.1 in) over 20 days, while September sees only 91 mm (3.6 in) across 17 days. Additionally, humidity levels are higher in May at 78%, compared to 73% in September. For more detailed information about the weather during this time, check out Val-d'Isere weather in May.
When comparing the weather in September and June, it’s clear that both months exhibit distinct characteristics. September experiences cooler temperatures, with a minimum of -8°C (19°F) and an average of 8°C (46°F), while June offers a milder climate, featuring a minimum of -3°C (27°F) and an average of 10°C (50°F). Additionally, June tends to be wetter, receiving 166 mm (6.5 in) of precipitation across 22 days, compared to September’s 91 mm (3.6 in) over 17 days. Humidity levels are fairly similar, hovering around 73% in September and slightly higher at 75% in June, contributing to the muggy feel during the summer month. For more detailed information on June weather in Val-d'Isere, you can refer to Val-d'Isere weather in June.
When comparing the weather in September and July, notable differences emerge. September tends to be cooler, with temperatures ranging from a minimum of -8°C (19°F) to a maximum of 18°C (65°F), while July offers milder conditions with temperatures from 1°C (33°F) to 22°C (71°F). Precipitation levels are higher in July, averaging 143 mm (5.6 in) over 18 days, compared to September's 91 mm (3.6 in) spread over 17 days. Humidity remains relatively consistent, with September at 73% and July at 72%. These factors make July generally more pleasant for outdoor activities. For those interested in detailed July conditions, you can find more information here: Val-d'Isere weather in July.
In comparing the weather between August and September, we notice a distinct shift in temperatures and precipitation. August experiences a milder range, with minimum temperatures around 0°C (33°F) and maximums reaching 22°C (73°F), leading to an average of 12°C (53°F). This month also sees significant rainfall, totaling 156 mm (6.1 in) over 19 days, with a relatively lower humidity of 63%. In contrast, September brings cooler temperatures with a minimum of -8°C (19°F) and a maximum of 18°C (65°F), averaging 8°C (46°F). The precipitation decreases to 91 mm (3.6 in) over 17 days, but the humidity rises to 73%. For more detailed insights on August weather, you can check Val-d'Isere weather in August.
September's weather features a more moderate temperature range, with average highs reaching 18°C (65°F) and lows of -8°C (19°F). The month receives a total precipitation of 91 mm (3.6 in) spread over 17 days, with humidity averaging around 73%. In contrast, October brings cooler temperatures, with an average high of 15°C (59°F) and a notable drop in average temperature to 3°C (38°F). Additionally, October experiences increased rainfall, totaling 141 mm (5.6 in) over 12 days, accompanied by higher humidity levels of 89%. For more insights into October weather patterns, you can explore Val-d'Isere weather in October.
September and November present contrasting weather patterns that highlight the transition into winter. In September, temperatures range from a minimum of -8°C (19°F) to a maximum of 18°C (65°F), with an average of 8°C (46°F) and relatively moderate precipitation of 91 mm (3.6 in) spread over 17 days. The humidity is at a comfortable 73%. In stark contrast, November experiences significantly colder temperatures, with a minimum of -21°C (-6°F), an average of -3°C (27°F), and a maximum of 12°C (54°F). This month also sees increased precipitation of 147 mm (5.8 in) over 16 days, accompanied by higher humidity at 90%. For more details on November's weather specifics, check out Val-d'Isere weather in November.
In September, temperatures in Val-d'Isère range from a chilly minimum of -8°C (19°F) to a pleasant maximum of 18°C (65°F), with an average of 8°C (46°F). The month experiences significant rainfall, totaling 91 mm (3.6 in) across about 17 days, and humidity levels average around 73%. In contrast, December brings much colder conditions, with temperatures plunging to a minimum of -21°C (-5°F) and an average of -7°C (19°F), peaking at just 3°C (38°F). This month sees a substantial increase in precipitation, accumulating to 190 mm (7.5 in) over the same number of days, while humidity rises to 90%. For more detailed insights into Val-d'Isère's winter weather, check out Val-d'Isere weather in December.
As summer fades into autumn, September in Val-d'Isère offers a striking transition marked by cooler temperatures and increased precipitation. Although the warmth of August lingers with a maximum of 18°C, the crisp mornings often dip to a chilly -8°C, reminding visitors that winter is on the horizon. With approximately 17 days of rainfall, the landscape transforms, enveloping the area in a refreshing humidity of 73%. This combination creates a vibrant atmosphere ideal for those who appreciate a quieter, more serene mountain experience compared to the bustling summer months. For a deeper understanding of what to expect, explore the detailed trends at Val-d'Isere Climate.