Last updated: August 21, 2025
In Yuzawa, Japan, September brings a dynamic blend of weather conditions that showcase the transition from summer to autumn. The maximum temperature can reach a warm 31°C (89°F), while the average temperature hovers around a comfortable 19°C (67°F). Nights can be quite cool, dipping to a minimum of 6°C (43°F). This month is also characterized by significant rainfall, accumulating to 223 mm (8.8 in) across 19 days, making it one of the wetter times of the year. With humidity levels high at 89%, visitors can expect a lush atmosphere that enhances the region's beautiful landscapes.
In September, Yuzawa transitions beautifully from the summer heat, showcasing a mild climate that invites outdoor exploration. The temperatures range from a crisp 6°C (43°F) at night to a warm 31°C (89°F) during the day, with an average of 19°C (67°F) providing the perfect balance for activities. This month marks a notable shift as the summer's peak heat begins to recede, making way for refreshing autumn breezes. As the landscape starts to don its fall colors, September offers a stunning backdrop for enjoying the last vestiges of warmth before the chill of autumn sets in, creating a delightful atmosphere for both locals and visitors alike.
September in Yuzawa, Japan, marks a significant transition in weather patterns, with precipitation averaging 223 mm (8.8 in) over 19 rainy days. This level of rainfall, while substantial, is slightly lower than the previous month's 238 mm (9.4 in), continuing the trend of summer's heavy downpour but hinting at the impending shift towards drier autumn months. The rain-filled days of September are fewer in number compared to the peak of July, which recorded 376 mm (14.8 in) over 24 days, showcasing a gradual tapering of the rainy season. As Yuzawa prepares for October’s increased precipitation of 256 mm (10.1 in), the region experiences a blend of lingering summer moisture and the onset of fall, creating a dynamic backdrop for its picturesque landscapes.
September in Yuzawa, Japan, experiences a notable humidity level of 89%, slightly down from the sweltering highs of summer. As the summer months of July and August see humidity peaks at 92%, September marks a transition into the fall season, where humidity begins to gradually decrease. While the drop is subtle, it reflects a shift in the atmosphere, preparing for the crisper air of autumn. This month’s humidity levels remain higher than the spring months, indicating the lingering warmth of late summer but also hinting at the cooling trends that await in October and beyond.
As September rolls into Yuzawa, Japan, the UV Index showcases a notable shift, reflecting the transition from the intense summer months to the more temperate autumn. With a UV Index of 9, categorized as very high, sunlight becomes increasingly potent, requiring vigilance to prevent skin damage—especially with a burn time of just 15 minutes. This decrease from the extreme levels seen during the peak summer months of June, July, and August highlights a gradual retreat from those scorching afternoons. While there’s a welcome reduction in intensity compared to August, sun safety remains essential as the region prepares to welcome fall. For more detailed insights on UV trends and protection measures, check the Yuzawa UV Index.
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As September rolls into Yuzawa, Japan, the days still bask in a generous 249 hours of sunshine, marking a delightful transition from the summer months. With sunshine peaking in May at 302 hours, the lighter days gradually taper off, but September's glow remains vibrant. Following the sun-splashed August, which recorded an impressive 294 hours, the sunshine in September signals the onset of autumn, where the warm hues of fall take over the landscape. This time of year showcases a significant decline from the bright summer but still provides an inviting climate for outdoor pursuits, making September a perfect blend of lingering warmth and the promise of cozy seasonal change.
As September rolls in, Yuzawa, Japan experiences a moderate 26% chance of sunny weather. This marks a slight decrease from the summer months of July and August, which together see more consistent sunshine. However, it represents an improvement compared to the early part of the year, where January, March, and May recorded significantly lower chances of sun. With the vibrancy of fall approaching, September offers a unique blend of lingering summer warmth and the emerging crispness of autumn, creating a delightful atmosphere for visitors. Despite the fluctuating weather, there’s still ample opportunity to enjoy Yuzawa’s natural beauty under the sun.
As September arrives in Yuzawa, Japan, the daylight gradually begins to wane, offering a transitional feel to the month. With an average of 12 hours of daylight, September reflects a gentle decline from the peak summer months of June and July, during which the sun graced the region with a consistent 14 hours of daylight. This soft descent mirrors the natural rhythm of the seasons, as daylight hours steadily decrease from the vibrant brightness of summer to the cooler embrace of autumn. Following September, daylight continues to diminish into October, where only 11 hours are left, hinting at the approaching winter months. This ebb and flow of sunlight beautifully captures the essence of Yuzawa's seasonal landscape, drawing outdoor enthusiasts to relish the distinct changes in light and atmosphere.
As September arrives in Yuzawa, Japan, the gentle breeze begins to stir, with an average wind speed of 1.7 m/s (4 mph). This marks a slight uptick from the summer months, where July recorded the calmest winds at only 1.4 m/s (3 mph). The transition into fall brings a refreshing change, reminiscent of the increasing winds earlier in the year, peaking in April with 2.2 m/s (5 mph). While September's winds may not rival the spring gusts, they signal the approach of cooler weather, creating a perfect backdrop for the vibrant autumn foliage that Yuzawa is renowned for. Overall, the wind patterns reflect a distinct seasonal shift, with calmer summer days giving way to the refreshing currents of early fall.
Weather in Yuzawa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Yuzawa, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit stark contrasts in weather patterns. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 31°C (89°F), with an average of 19°C (67°F) and high humidity at 89%. The month is characterized by significant rainfall, totaling 223 mm (8.8 in) over 19 days. Conversely, January experiences much colder conditions, with temperatures dropping to a minimum of -14°C (6°F) and peaking at only 8°C (47°F); the average temperature is a chilly -3°C (28°F). Despite slightly lower precipitation at 199 mm (7.8 in) across 22 days, humidity remains similarly high at 88%. For more insight into January weather specifics, visit Yuzawa weather in January.
In September, the weather is significantly milder, with temperatures ranging from a low of 6°C (43°F) to a high of 31°C (89°F) and an average of 19°C (67°F). The month is characterized by high humidity at 89% and considerable precipitation, totaling 223 mm (8.8 in) over 19 days. In contrast, February brings a stark chill, with temperatures dropping as low as -19°C (-2°F), peaking at 14°C (57°F), and averaging at a frigid -2°C (29°F). Additionally, February experiences slightly less precipitation at 185 mm (7.3 in) over 22 days, accompanied by a humidity level of 86%. For a closer look at the specifics of February weather, visit Yuzawa weather in February.
September and March present stark contrasts in weather, reflecting the transition between late summer and early spring. September boasts a warm average temperature of 19°C (67°F), peaking at a balmy 31°C (89°F), while March struggles with a chilly average of just 3°C (37°F), with nighttime lows dipping to -10°C (14°F). Precipitation is more abundant in September, totaling 223 mm (8.8 in) over 19 days, compared to March's 174 mm (6.9 in) over 20 days. Additionally, the humidity in September sits at a high 89%, providing a muggy feel, whereas March experiences a slightly lower humidity level of 81%. For detailed insights on the weather specifics, check out Yuzawa weather in March.
In comparing September and April weather, September tends to be significantly warmer, with average temperatures soaring up to 19°C (67°F) and peaks reaching 31°C (89°F), while April experiences a much cooler average of 8°C (46°F) and a maximum of 26°C (79°F). Despite the warmth, September also brings more precipitation, with 223 mm (8.8 in) falling over 19 days, compared to April's 167 mm (6.6 in) across 18 days. Additionally, humidity levels in September are higher at 89%, in contrast to April's 78%. For more detailed insights on April weather, you can check out Yuzawa weather in April.
September and May exhibit notable differences in weather conditions. September enjoys a warmer average temperature of 19°C (67°F), with daytime highs reaching up to 31°C (89°F), while May has an average of 15°C (58°F) and max temperatures around 30°C (86°F). Precipitation is more frequent in September, with 223 mm (8.8 in) of rain over 19 days, compared to May's 181 mm (7.1 in) over 16 days. Additionally, September's humidity is higher at 89%, compared to May's 81%. For more details on May weather, you can visit Yuzawa weather in May.
September and June exhibit similar temperature ranges, with September having slightly warmer average and maximum temperatures. In September, the minimum temperature is the same as June at 6°C (43°F), while the average temperature is 19°C (67°F) compared to June's 18°C (64°F), and the maximum temperature reaches 31°C (89°F) versus June's 30°C (86°F). Both months receive considerable precipitation, with September totaling 223 mm (8.8 in) over 19 days and June slightly lower at 201 mm (7.9 in) over 18 days. Humidity levels are comparable, with September at 89% and June at 88%. For a closer look at the weather specifics, visit Yuzawa weather in June.
When comparing the weather in September to July, we see notable differences in both temperature and precipitation patterns. September experiences a wider temperature range with minimums of 6°C (43°F) and maximums reaching 31°C (89°F), averaging around 19°C (67°F). In contrast, July tends to be warmer overall, with minimum temperatures of 14°C (58°F) and maximums of 32°C (90°F), resulting in an average of 22°C (73°F).
However, July also brings higher precipitation levels, with a total of 376 mm (14.8 in) spread over 24 days, compared to September's 223 mm (8.8 in) over 19 days. Humidity levels remain relatively high in both months, with July at 92% and September at 89%. For more detailed information, you can explore Yuzawa weather in July.
In comparing the weather between September and August, September exhibits cooler temperatures with a minimum of 6°C (43°F) and an average of 19°C (67°F), while August has warmer conditions with a minimum of 10°C (50°F) and an average of 24°C (75°F). Additionally, September sees a maximum temperature of 31°C (89°F), slightly lower than August's peak of 33°C (91°F). Precipitation levels are comparable; September receives 223 mm (8.8 in) over 19 days, while August totals 238 mm (9.4 in) across 22 days. Humidity remains high in both months, with September at 89% and August slightly higher at 92%. For more details on August weather, check out Yuzawa weather in August.
In September, the weather typically features a wider temperature range, with lows around 6°C (43°F) and highs reaching up to 31°C (89°F), contributing to an average temperature of 19°C (67°F). The month is marked by significant rainfall, totaling 223 mm (8.8 in) over 19 days, accompanied by high humidity levels of 89%. In contrast, October sees a notable drop in average temperature to 13°C (56°F), with minimums around 2°C (36°F) and maximums peaking at 27°C (81°F). Precipitation increases slightly to 256 mm (10.1 in) but occurs over just 18 days, with humidity remaining relatively high at 87%. For a more detailed look at October's weather patterns, you can explore Yuzawa weather in October.
September and November present quite different weather patterns. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 31°C (89°F), with an average of 19°C (67°F). This month is characterized by high humidity at 89% and significant rainfall, accumulating to 223 mm (8.8 in) over 19 days. In contrast, November experiences much cooler temperatures, with a minimum of -9°C (17°F) and a maximum of 21°C (71°F), leading to an average of only 6°C (44°F). Although November sees less rainfall at 145 mm (5.7 in) over 18 days, it maintains a slightly lower humidity level of 85%. For a detailed look at conditions specific to this month, you can check Yuzawa weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures range from a mild 6°C (43°F) at night to a warm 31°C (89°F) during the day, with an average of 19°C (67°F). The month is characterized by high humidity at 89% and considerable rainfall, totaling 223 mm (8.8 in) across 19 days. In contrast, December brings much colder temperatures, with minimums plunging to -14°C (7°F) and an average of 0°C (32°F). The maximum temperature reaches 18°C (65°F), and while the precipitation slightly increases to 226 mm (8.9 in), it occurs over more days—22 in total. Humidity levels drop slightly to 86%, highlighting the colder, crisp air typical of winter. For more details on December weather, you can check Yuzawa weather in December.
As September unfolds in Yuzawa, the weather presents a unique transition compared to the summer months. With refreshing temperatures giving way from hot summer highs, the average cools significantly, while the crisp mornings hint at the approaching autumn. Humidity levels soar, creating a lush, vibrant environment, yet rainfall becomes more frequent, resulting in more than half the month experiencing drizzles and showers. This shift not only shapes the landscape but also the activities that visitors can enjoy. For a deeper understanding of how Yuzawa’s weather evolves throughout the year, explore Yuzawa Climate.