Last updated: February 26, 2025
In Loire, France, the weather in September presents a delightful mix of mild temperatures and distinct seasonal changes. With maximum temperatures peaking at a warm 35°C (95°F) and an average of 17°C (63°F), visitors can enjoy the pleasant days infused with the charm of early autumn. However, the nights can be a bit cooler, dropping to a minimum of 5°C (41°F). This month sees 46 mm (1.8 in) of precipitation over approximately 8 days, reflecting the region's transition to wetter conditions. Combined with an average humidity of 75%, the air feels refreshing, making it an ideal time for exploring the lush landscapes and picturesque vineyards of the Loire Valley.
As September unfolds in the Loire Valley, the lingering warmth of summer gently transitions into the cooler embrace of autumn. With nighttime temperatures dipping to a pleasant 5°C (41°F), the days boast an inviting average of 17°C (63°F), providing a comfortable backdrop for outdoor exploration. The maximum temperature can still soar to 35°C (95°F), hinting at the tail end of summer’s heat, yet a refreshing shift begins as greenery starts to hint at fall. Compared to the swelter of July and August, when highs reached up to 39°C (103°F), September offers a delightful moderation, making it an ideal month for visitors to savor the region’s stunning landscapes and renowned vineyards before the chilly October arrives.
In September, Loire, France experiences a gentle transition into autumn, characterized by an average precipitation of 46 mm (1.8 in) spread over 8 days. This marks a slight decrease compared to the wetter summer months, as July and August had significantly lower averages of 38 mm and 40 mm, respectively. The gradual return of rainfall in September hints at the approaching seasonal shift, setting the stage for the more substantial precipitation witnessed in October, which jumps to 79 mm. Overall, September reflects a balance where the lingering summer warmth meets the onset of fall, hinting at what lies ahead in the season.
In September, humidity in Loire, France settles at a comfortable 75%, marking a transition from the summer’s drier months. As the year progresses from the humid chill of January at 88%, we observe a steady decline through the spring and summer, with July hitting a low of 65%. By August, humidity begins to creep back up slightly, and September strikes a balance, reflecting the onset of autumn. This slight rise is a precursor to the wetter months ahead, as October and November witness a significant increase, reaching 85% and 88%, respectively. This cyclical pattern highlights Loire’s transformation from warm summers to the cooler, more humid conditions of fall.
As summer fades into autumn, the UV Index in Loire, France, experiences a notable shift. In September, the UV Index sits at 6, categorized as high, indicating a moderate risk of harm from unprotected sun exposure. This is a decrease from the peak summer months of 8 and 9, where burn times were reduced to just 15 minutes. With September’s burn time extending back to 25 minutes, it provides a more forgiving window for outdoor activities while still demanding vigilance against the sun. As the year progresses, UV levels will continue to decline, dipping as low as 2 in the winter months. For more detailed insights on UV levels throughout the year, check out the Loire UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September in the Loire Valley continues to bask in abundant sunshine, with an impressive 323 hours of bright, golden light. This month marks a delightful shift from the peak of July’s warmth, which boasts the highest sunshine hours at 409, to a still pleasant and inviting ambiance, perfect for exploring the region's vineyards and historic châteaux. Although the hours of sunshine dwindle in comparison to the sun-drenched summer months, September offers a charming blend of warmth and tranquility, making it an ideal time for leisurely strolls amidst the stunning backdrop of changing leaves. As the days shorten gradually leading into October, the Loire’s vibrant beauty remains a captivating allure, ensuring that September retains its special place in the heart of this exquisite French landscape.
As September rolls into the Loire region of France, the chance of enjoying sunny weather rises to 44%. This marks a subtle increase from the summer months, showcasing a transition where late-summer warmth still lingers, yet the variability of early autumn starts to weave its way into the climate. Notably, September's likelihood of sunshine surpasses that of June, July, and August, offering a delightful surprise for those seeking to bask in the mild rays before the chill of fall sets in. Overall, the month presents a promising blend of sunny intervals and the enchanting beauty of the Loire Valley's changing landscape, making it an ideal time for outdoor exploration and appreciation of the region's rich scenery.
As September unfolds in Loire, France, the days begin to curve gently toward autumn, offering around 12 hours of daylight. This marks a noticeable decline from the sun-drenched heights of summer, where July and June basked in 15 hours of radiant light. Following the vibrant bloom of May with its 15 hours, the daylight gradually recedes, signaling a transition to cooler days. September’s twilight hints at the crispness of October, which will see daylight dip further to 10 hours. This rhythm of change encapsulates the beauty of the Loire region, where each month unfolds its own unique character, from the bright, long days of spring and summer to the cozy, shorter days of fall and winter.
As summer fades into autumn, September in the Loire sees a gentle breeze, with the average wind speed tapering to 3.3 m/s (7 mph). This marks a shift from the warmer months, where wind speeds were notably higher in May and February. The cool, tempered winds of September signal the approach of fall, offering a serene and refreshing atmosphere for leisurely vineyard strolls and picturesque riverbanks. Interestingly, September's winds are among the quietest of the year, following a pattern of gradual decline that started in June, suggesting a tranquil transition that invites both relaxation and reflection amidst the stunning landscapes of this enchanting region.
The weather in Loire 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 Loire and find detailed weather information for every month.
September offers a warm transition into autumn, with temperatures ranging from a minimum of 5°C (41°F) to a pleasant average of 17°C (63°F) and high peaks reaching up to 35°C (95°F). In contrast, January presents a stark shift, where temperatures drop significantly, hovering around a minimum of -7°C (20°F) and an average of just 6°C (43°F), with a maximum of 16°C (61°F). Both months experience similar levels of precipitation, with September seeing 46 mm (1.8 in) over 8 days, while January brings slightly more, at 47 mm (1.9 in) across 10 days. Additionally, the humidity is notably higher in January at 88%, compared to September's 75%, making for a chilly rather than a humid experience. For more specifics, check out Loire weather in January.
September and February present stark contrasts in weather patterns. In September, temperatures range from a comfortable 5°C (41°F) to a warm 35°C (95°F), with an average of 17°C (63°F) and relatively lower humidity at 75%. While there is some precipitation, with about 46 mm (1.8 in) over 8 days, the overall climate remains more temperate and pleasant. In contrast, February experiences much cooler temperatures, with a minimum of -6°C (21°F) and a maximum of 22°C (72°F), averaging just 7°C (45°F). This month also sees increased rainfall, totaling 60 mm (2.4 in) across 12 days, and higher humidity levels at 87%. For more detailed information on February weather, you can visit Loire weather in February.
September and March present significantly different weather patterns. September typically enjoys warmer temperatures, with averages around 17°C (63°F) and maximums reaching up to 35°C (95°F), while March is considerably cooler, with average temperatures of just 9°C (48°F) and maximums peaking at 24°C (76°F). Rainfall is slightly higher in March, totaling 64 mm (2.5 in) over 13 days, compared to September's 46 mm (1.8 in) across 8 days. Additionally, humidity levels are higher in March at 84%, while September's humidity sits at 75%. For a detailed look at the climate in the region, you can visit Loire weather in March.
In comparing the weather of September and April, we observe notable differences in temperature and humidity. September enjoys warmer temperatures, ranging from a minimum of 5°C (41°F) to a maximum of 35°C (95°F), with an average of 17°C (63°F). In contrast, April features cooler conditions, with temperatures dipping as low as -3°C (27°F) and reaching a maximum of 27°C (80°F), averaging at 12°C (53°F). Both months experience similar precipitation levels, around 46 mm (1.8 in) in September and 49 mm (1.9 in) in April, with rain expected on about 8 days in each month. However, April tends to be slightly more humid at 83%, compared to September’s 75%. For a detailed look at April weather, check out Loire weather in April.
September and May present distinct weather patterns. September typically sees slightly warmer average temperatures, ranging from a minimum of 5°C (41°F) to a maximum of 35°C (95°F), while May's temperatures oscillate between 0°C (33°F) and 31°C (88°F), with an average of 15°C (59°F). Precipitation is more prevalent in May, with 62 mm (2.4 in) over about 12 days, compared to September's 46 mm (1.8 in) over 8 days. Additionally, May experiences slightly higher humidity at 81%, compared to September's 75%. For a deeper understanding of the climate during this time, check out Loire weather in May.
When comparing the weather in September and June, both months exhibit mild temperatures with a range of comfortable averages. In September, temperatures can dip to a minimum of 5°C (41°F), reaching a maximum of 35°C (95°F) and averaging around 17°C (63°F). June, on the other hand, shows slightly warmer temperatures with a minimum of 6°C (43°F), a maximum of 36°C (98°F), and an average of 18°C (65°F).
Precipitation is more significant in June, with 90 mm (3.5 in) expected over 11 days, while September sees less rain at 46 mm (1.8 in) across 8 days. Interestingly, both months maintain the same level of humidity at 75%, providing a similar atmospheric feel despite the differences in temperature and rainfall. For a deeper look into June weather patterns, visit Loire weather in June.
In comparing the weather between September and July, September exhibits a broader temperature range, with minimums dipping to 5°C (41°F) and maximums reaching 35°C (95°F), while July sees slightly warmer conditions, with minimums around 8°C (47°F) and maximums peaking at 39°C (103°F). The average temperature in September is about 17°C (63°F), slightly cooler than July's average of 20°C (69°F). Precipitation levels are relatively comparable, with September receiving 46 mm (1.8 in) over 8 days, whereas July has 38 mm (1.5 in) spread over just 6 days. Notably, September is also more humid at 75%, compared to July’s 65%. For more specific details on July weather, visit Loire weather in July.
When comparing the weather in September to that of August, it’s evident that September experiences a broader temperature range, with minimums dropping to 5°C (41°F) and maximums reaching 35°C (95°F). In contrast, August has slightly higher minimum and average temperatures, with lows of 8°C (46°F) and an average of 20°C (68°F), while the maximum temperature hits 37°C (99°F). Precipitation levels are quite similar, with September receiving 46 mm (1.8 in) over 8 days compared to August's 40 mm (1.6 in) over 7 days. Additionally, September’s humidity is higher at 75%, compared to August’s 67%. For more insights into August weather, check out Loire weather in August.
In September, the weather is generally warmer, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 35°C (95°F) and an average of 17°C (63°F). Precipitation is relatively low at 46 mm (1.8 in) over about 8 days, and humidity sits at 75%. In contrast, October brings cooler temperatures, with a minimum of 2°C (36°F) and an average of 13°C (56°F), peaking at 26°C (79°F). Rainfall increases to 79 mm (3.1 in) over 12 days, and humidity rises to 85%. This shift highlights a transition from the warm summer months into the cooler, wetter fall season. For more details on the weather during October, you can check Loire weather in October.
In comparing the weather of September and November, significant differences emerge. September experiences milder temperatures, with a minimum of 5°C (41°F) and an average of 17°C (63°F), while November sees colder conditions, featuring a minimum of -3°C (27°F) and an average of just 8°C (47°F). Precipitation also increases in November, rising to 73 mm (2.9 in) over 12 days, compared to September’s 46 mm (1.8 in) over 8 days. Additionally, November tends to be more humid, with humidity levels reaching 88% versus September's 75%. For a more detailed look at November weather, you can check Loire weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 35°C (95°F), with an average of 17°C (63°F). This month sees relatively low precipitation at 46 mm (1.8 in) over about 8 days, and the humidity is a comfortable 75%. Conversely, December experiences colder temperatures, with a minimum of -3°C (26°F) and a maximum of 17°C (62°F), leading to an average of 7°C (45°F). The month is notably wetter, with 93 mm (3.7 in) of precipitation spread over approximately 15 days, and higher humidity at 90%. For more detailed insights, visit Loire weather in December.
As September unfolds in the Loire, the weather ushers in a delightful transition, blending warmth with the crispness of approaching autumn. While maximum temperatures can still reach a sweltering 35°C, the average cools significantly, encouraging comfortable outdoor adventures. This month typically sees a moderate amount of precipitation over a few days, allowing the landscape to maintain its lush beauty. With humidity at 75%, the air feels refreshing, marking a pleasant shift from the intense summer heat. If you're curious about how September's climate fits into the broader pattern of the year, explore more details about the weather in the Loire in our comprehensive guide Loire Climate.