Last updated: February 26, 2025
In September, Grenoble experiences a blend of mild temperatures and occasional rainfall, making it a unique time to explore this picturesque city. The maximum temperature can soar up to 27°C (81°F), while the average hovers around 14°C (58°F), providing comfortable days and cool evenings. However, early autumn brings a chance of chillier nights with temperatures dipping as low as -2°C (28°F). With precipitation amounting to 81 mm (3.2 in) over approximately 10 days, visitors can expect a mix of sunny spells and refreshing showers, contributing to a humidity level of 73%. This captivating weather makes stepping outside a delightful experience, perfect for enjoying the fall foliage and vibrant local culture.
As September arrives in Grenoble, the summer warmth gracefully begins to transition into the cooler embrace of autumn. With temperatures ranging from a minimal -2°C (28°F) to a comfortable 27°C (81°F), this month offers a delightful average of 14°C (58°F). The lingering warmth from summer is still felt, inviting locals and visitors alike to enjoy outdoor activities amid the stunning alpine backdrop. As the month progresses, the crispness in the air starts to hint at the approaching fall, setting the stage for a picturesque transformation of the surrounding landscapes. Overall, September in Grenoble is a harmonious blend of lingering warmth and the early whispers of autumn's arrival.
September in Grenoble marks a transition toward autumn, characterized by a refreshing dip in precipitation. With 81 mm (3.2 in) of rain spread across 10 days, it's one of the drier months of the year, contrasting sharply with the heavy downpours of December. This decline in rainfall follows a summer of relatively consistent precipitation, particularly notable in May and June, which boast higher totals of 174 mm (6.9 in) and 149 mm (5.9 in), respectively. September's weather invites a mix of lingering warmth and cool breezes, as nature prepares for the forthcoming seasonal shift, making it an ideal time for exploration while still enjoying the vibrant landscapes of the French Alps.
In September, Grenoble experiences a notable transition in humidity levels, with an average of 73%. This marks a slight increase from the drier conditions of August, where humidity dipped to 63%, aligning with the end of summer. As autumn approaches, the air becomes more saturated, leading to a gradual rise in moisture that foreshadows the cooler, more humid months ahead. Following September, humidity levels escalate sharply in October to 89%, reflecting the city's characteristic seasonal shift. Overall, the data reveals a clear trend: as the year progresses from the sweltering summer, humidity in Grenoble steadily climbs, culminating in a return to the high levels seen in winter.
As summer transitions into autumn, September in Grenoble sees a notable shift in UV exposure. The UV Index drops to 7, categorizing it as high, which means you’ll need to be a bit more cautious under the sun compared to the preceding months. With a burn time of 25 minutes, this is a reminder that even as the temperatures begin to cool, direct exposure can still be impactful. This trend of decreasing UV levels continues into the fall, with October's Index falling further to 5. For anyone enjoying the tail end of outdoor activities in the beautiful landscapes of the French Alps, it's essential to remain vigilant about sun protection. To stay informed about UV levels throughout the year, visit Grenoble UV Index.
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As summer fades, September in Grenoble, France, still basks in the golden glow of the sun, offering a generous 335 hours of sunshine. This vibrant month, while a slight dip from the highs of July and August, showcases a steady abundance of daylight that wraps the city in warmth and encouragement for outdoor adventures. The trend of increasing sunlight seen from January's mere 169 hours to the peak summer months highlights the transition into autumn, yet September remains a delightful bridge between the two seasons. A cozy atmosphere envelops the charming streets and stunning landscapes, inviting both locals and visitors to savor the waning summer days before the cooler months settle in.
In September, the likelihood of experiencing sunny weather in Grenoble, France, is around 38%, which reflects a slight increase compared to the summer months but is notably lower than the sunny peaks of late spring and early summer. As summer transitions to autumn, weather patterns begin to shift, leading to a gradual decrease in sunshine chances from the more sun-soaked days of August (48%). This trend indicates that while September offers a fair amount of sunshine, it serves as a gentle reminder of the approaching cooler months, with weather becoming increasingly variable as the year progresses. Overall, visitors can still enjoy a pleasant mix of sun and warmth, but it's wise to be prepared for the changing climate as autumn sets in.
In Grenoble, France, the daylight duration in September reflects a gradual transition from the long, sun-drenched days of summer to the shorter hours of autumn. With approximately 12 hours of daylight, September still enjoys a generous amount of sunshine, although it marks the beginning of a decline that will continue through the fall and winter months. This month embodies a sweet spot between the peak of 15 hours in June and the more muted 10 hours that arrive in October. As the days shorten, the landscape shifts, inviting residents to relish the lingering warmth and vibrant colors of early autumn before the crispness of winter settles in.
As September unfolds in Grenoble, the subtle shift in wind patterns is palpable. The average wind speed dips slightly to 1.2 m/s (3 mph), marking one of the calmer months in contrast to the gentle breezes of summer. This decrease hints at the transition towards autumn, inviting cooler days and the rustling of leaves. Despite September's lull, the winds remain consistent throughout the year, with similar velocities recorded from January through August, albeit with a noticeable increase to 1.6 m/s (4 mph) in both April and October. Overall, the September air carries a serene quality, reflecting nature's gradual move towards a new seasonal rhythm.
The weather in Grenoble 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 Grenoble and find detailed weather information for every month.
In September, the weather in Grenoble is significantly milder, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 27°C (81°F) and an average of 14°C (58°F). This month tends to receive about 81 mm (3.2 in) of precipitation over approximately 10 days, coupled with a humidity level of 73%. In contrast, January brings much colder conditions, where temperatures can plummet to a minimum of -21°C (-6°F) and only reach a maximum of 12°C (55°F), averaging -1°C (31°F). This winter month sees higher precipitation levels, averaging 118 mm (4.6 in) over 11 days, and a notable rise in humidity to 91%. For more details on January weather in Grenoble, check out Grenoble weather in January.
September and February present strikingly different weather patterns. In September, temperatures vary from a chilly minimum of -2°C (28°F) to a warm maximum of 27°C (81°F), with an average of 14°C (58°F). The month sees a moderate 81 mm (3.2 in) of precipitation spread across about 10 days, accompanied by a humidity level of 73%. In contrast, February experiences colder temperatures, with a minimum of -12°C (11°F) and an average temperature of just 3°C (37°F). The maximum temperature reaches 17°C (63°F). Precipitation increases to 107 mm (4.2 in) over approximately 11 days, alongside a higher humidity of 87%. These factors contribute to the distinctly cooler and wetter climate in February as compared to the milder and drier conditions typically found in September. For more detailed information, you can visit Grenoble weather in February.
When comparing the weather in September and March, significant differences can be observed. September generally enjoys milder temperatures, with an average of 14°C (58°F) and a maximum of 27°C (81°F), while March is much cooler, averaging just 5°C (41°F) with a peak of 19°C (67°F). Precipitation levels are higher in March, totaling 134 mm (5.3 in) over 14 days, compared to September's 81 mm (3.2 in) over 10 days. Additionally, humidity tends to be higher in March at 84%, compared to 73% in September, contributing to a notably different feel to the air. To explore more about the specific weather conditions in March, you can check Grenoble weather in March.
In September, temperatures in the region show a notable range, with minimums around -2°C (28°F) and maximums reaching up to 27°C (81°F), resulting in a pleasant average of 14°C (58°F). In contrast, April tends to be cooler, with minimum temperatures dropping to -7°C (20°F) and average highs of 23°C (73°F), leading to a lower average temperature of 8°C (47°F). Both months experience similar precipitation levels, with September receiving 81 mm (3.2 in) over about 10 days and April slightly higher at 82 mm (3.2 in) across 11 days. Humidity is marginally greater in April at 83%, compared to 73% in September, making the latter feel relatively drier. For a detailed look at the weather specifics in April, you can visit Grenoble weather in April.
When comparing the weather in September and May, we can see some notable differences. September typically showcases a wider temperature range, with minimums around -2°C (28°F) and maximums reaching up to 27°C (81°F), yielding a pleasant average of 14°C (58°F). In contrast, May has slightly cooler temperatures, starting at a minimum of -3°C (27°F) and averaging 12°C (53°F), but similarly peaks at 27°C (80°F). Rainfall in May is significantly higher, with 174 mm (6.9 in) over 18 days, compared to September's 81 mm (3.2 in) over just 10 days. The humidity levels are also higher in May at 78%, compared to September's 73%. For a more detailed overview, you can check Grenoble weather in May.
When comparing the weather in September to June, distinct differences emerge. September showcases a broader temperature range, with minimums dropping to -2°C (28°F) and maximums reaching up to 27°C (81°F), while the average temperature rests at 14°C (58°F). In contrast, June experiences milder temperatures, with minimums at 4°C (40°F) and maximums soaring to 32°C (89°F), resulting in a more comfortable average of 17°C (62°F). Precipitation is notably higher in June, with 149 mm (5.9 in) over 16 days, compared to September's 81 mm (3.2 in) over 10 days, leading to a slightly drier experience in September. Both months have comparable humidity levels, with September at 73% and June at 75%. For a more detailed look at June weather, refer to Grenoble weather in June.
When comparing the weather in September to that of July, we notice a significant difference in temperature and precipitation patterns. September experiences a broader range of temperatures, with minimums dropping to -2°C (28°F) and maximums reaching up to 27°C (81°F), while July remains warmer, with minimum temperatures of 7°C (45°F) and highs soaring to 33°C (92°F). Precipitation in September totals 81 mm (3.2 in) over an average of 10 days, which is less than July's 110 mm (4.3 in) across 12 days. Both months see similar humidity levels, with September at 73% and July at 72%. For a detailed look at July conditions, you can check Grenoble weather in July.
In September, the weather in Grenoble brings cooler temperatures, with minimums dropping to -2°C (28°F) and an average of 14°C (58°F), compared to the warmer August averages that range from a minimum of 6°C (43°F) and an average of 18°C (65°F) all the way up to a maximum of 32°C (90°F). While August sees slightly higher precipitation at 103 mm (4.1 in) over 12 days, September has a bit less, with 81 mm (3.2 in) recorded over 10 days. Additionally, September's humidity is higher at 73%, contrasting with August's 63%. For more details, you can view Grenoble weather in August.
September and October present a notable shift in weather patterns. While September enjoys warmer average temperatures, ranging from a minimum of -2°C (28°F) to a maximum of 27°C (81°F), October sees a decrease in average temperature to 10°C (50°F) with a maximum of 23°C (73°F). In terms of precipitation, October is wetter, accumulating 120 mm (4.7 in) over 11 days, compared to September's 81 mm (3.2 in) over 10 days. Additionally, October experiences higher humidity at 89%, compared to September’s 73%. For more detailed information, you can check Grenoble weather in October.
September typically offers milder temperatures in Grenoble, with averages around 14°C (58°F) and a maximum of 27°C (81°F), while November sees a significant drop, averaging only 4°C (39°F) and a maximum of 18°C (65°F). The month of September experiences around 81 mm (3.2 in) of precipitation over about 10 days, whereas November is wetter, with 119 mm (4.7 in) of rainfall spread across 13 days. Additionally, humidity levels rise notably in November to 90%, compared to September's 73%, making the latter feel more comfortable. For more detailed insights, check out Grenoble weather in November.
September weather offers a milder experience, with daily temperatures ranging from a minimum of -2°C (28°F) to a comfortable maximum of 27°C (81°F), accompanied by an average temperature of 14°C (58°F). Precipitation is relatively low at 81 mm (3.2 in) over about 10 days, creating a more moderate climate with a humidity level of 73%.
In contrast, December brings much colder conditions, with temperatures dropping to a minimum of -15°C (6°F) and an average temperature of just 1°C (33°F). The maximum temperature reaches a mild 12°C (54°F), but the month experiences significant precipitation at 229 mm (9.0 in) spread over 18 days, leading to a higher humidity level of 90%. For more detailed information, you can visit Grenoble weather in December.
As September unfolds in Grenoble, it marks a delightful transition from the heat of summer to the crispness of autumn. With temperatures beginning to cool, visitors can expect a more moderate climate compared to the sweltering summer months, characterized by a pleasant average temperature of 14°C (58°F). While the city still enjoys some balmy days with temperatures peaking at 27°C (81°F), the nights can get chilly, dipping as low as -2°C (28°F). Rainfall becomes more frequent, with about 81 mm (3.2 in) spread over roughly ten days, leading to a more humid atmosphere. This unique blend of warmth, cooler evenings, and increasing precipitation sets September apart, making it an ideal time to experience the picturesque scenery. For a deeper understanding of what to expect throughout the year, check out Grenoble Climate.