Last updated: August 21, 2025
In Matsumoto, Japan, the weather in September showcases a warm transition into autumn, with temperatures peaking at a maximum of 30°C (86°F) and averaging around 19°C (66°F). As the month progresses, cooler nights can be experienced, dipping to a minimum of 6°C (43°F). However, rain is a frequent visitor, with 222 mm (8.7 in) of precipitation over approximately 19 days, contributing to a high humidity level of 89%. This combination of warmth and moisture creates a unique tapestry of atmospheric conditions, perfect for enjoying the city's natural beauty as fall approaches.
As September unfolds in Matsumoto, Japan, the city experiences a delightful transition from the peak summer warmth to the gentle embrace of autumn. With temperatures ranging from a mild 6°C (43°F) at night to a pleasant 30°C (86°F) during the day, the climate invites outdoor exploration and scenic views. The average temperature settles at a comfortable 19°C (66°F), signaling a perfect time for locals and visitors alike to enjoy the vibrant changing foliage. This month marks a noticeable dip from the sweltering summer highs of August, but it maintains a reassuring warmth, creating an ideal backdrop for appreciating the region's natural beauty and rich cultural offerings.
September in Matsumoto, Japan, marks a notable increase in precipitation, with 222 mm (8.7 in) of rain recorded over 19 days. This month stands out as part of a trend where rainfall begins to peak after the summer months, following the heavy downpours of July, which had the highest total of 333 mm (13.1 in). As summer transitions to autumn, September sees a drop from the intensity of July but maintains significant moisture levels, setting the stage for October, which continues the trend with 255 mm (10.1 in). This gradual buildup in precipitation reflects the shifting seasons, as Matsumoto prepares for the cooler, wetter autumn ahead.
September in Matsumoto, Japan, showcases a notable humidity level of 89%, reflecting a slight dip from the sweltering heights of 92% experienced in the peak summer months of July and August. This transition into early autumn signifies a gradual easing of the intense summer humidity, marking a shift towards a more comfortable and refreshing atmosphere. The trend in Matsumoto's humidity throughout the year demonstrates a pattern of higher levels during the summer months, particularly from June to August, before tapering off into the milder conditions of fall. As the seasons change, September offers a delicate balance—still humid, yet offering relief as the air begins to cool, inviting residents and visitors to enjoy the rich tapestry of autumn's arrival.
September in Matsumoto, Japan, brings a very high UV Index of 10, indicating that sun safety is crucial during this time. As summer transitions into fall, the burn time decreases slightly to 15 minutes, signaling that even short exposure can lead to skin damage. This month continues a trend of extreme UV levels seen in the summer, particularly in August, which peaked at an index of 12. While the UV Index dips from the summer highs, it remains significant, reminding residents and visitors alike to stay vigilant. To stay informed about UV levels throughout the year, check out the comprehensive guide on Matsumoto UV Index.
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September in Matsumoto, Japan, greets visitors with a delightful 235 hours of sunshine, continuing the summer's warm embrace as the days gradually shorten. Following a vibrant August, which recorded 282 hours of bright rays, September's sunlight marks a gentle decline but still reflects the lingering warmth of the season. As autumn approaches, sunlight diminishes, yet this month stands out as a beautiful transition from the lively summer months to the cooler delights of fall. Notably, the overall trend showcases a splendid peak in sunshine during late spring and summer, creating a radiant backdrop for those exploring the picturesque landscapes of Matsumoto. The gradual tapering of sunlight, from summer's bounty to autumn's subtle charm, sets the stage for cozy evenings and vibrant foliage in the months ahead.
In September, the likelihood of sunny weather in Matsumoto, Japan dips to 22%, matching the lower averages seen in the summer months of June and August. This decline marks a continuation of the trend observed as the seasons transition from the vibrant summer into the cooler autumn. Notably, September's chance of sun is significantly lower than the preceding months, with only January, July, and May showcasing comparable figures. As the region prepares for October's increase to 44%, September may be more characteristic of overcast skies than bright, sunny days, inviting visitors to take advantage of the cooler weather while embracing Matsumoto's charming, yet unpredictable climate.
As summer gives way to autumn in Matsumoto, Japan, September brings a gentle transition in daylight, offering approximately 12 hours of sunlight—a gradual decline from the sun-drenched days of summer. This month marks a notable shift, as daylight hours dip from the 13 hours enjoyed in August, signaling the end of long, bright days. Historically, Matsumoto experiences its peak daylight during the late spring and summer months, with maximum daylight reaching 14 hours in both June and July. As the year progresses towards October, we can see a consistent decrease in daylight, hinting at the winter months ahead. This ebb and flow of daylight not only paints the sky in varying hues but also sets the stage for the vibrant fall foliage that defines this beautiful region.
In Matsumoto, Japan, the wind patterns throughout the year reveal a subtle yet captivating rhythm. September marks a gentle transition as average wind speeds average 1.5 m/s (about 3 mph), slightly below the more brisk conditions of early autumn. This month typically finds itself nestled amidst a trend of reduced wind speed that begins in the summer, with July and August registering their calmest winds at 1.3 m/s and 1.6 m/s respectively. As the year progresses into October, there is a mild uplift back to 1.6 m/s, hinting at the approaching shift of seasons. Overall, the data showcases a summer lull before the winds gradually pick up again, encapsulating the serene charm of September in this picturesque city.
Weather in Matsumoto varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Matsumoto, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather experiences. September boasts a range of temperatures from a mild 6°C (43°F) at night to a warm 30°C (86°F) during the day, alongside substantial rainfall of 222 mm (8.7 in) over 19 days and high humidity at 89%. In stark contrast, January features much colder temperatures, with lows plummeting to -16°C (4°F) and an average of -2°C (28°F), while peaking at a mild 11°C (52°F). Precipitation decreases significantly to 99 mm (3.9 in) across 16 days, maintaining a slightly lower humidity of 88%. For a closer look at January conditions, visit Matsumoto weather in January.
September and February present stark contrasts in weather. September typically boasts milder temperatures, with minimums of 6°C (43°F) and maximums reaching up to 30°C (86°F), showcasing a warm average of 19°C (66°F). However, it is also characterized by significant precipitation, totaling 222 mm (8.7 in) over 19 days, coupled with high humidity at 89%. In contrast, February plunges into the depths of winter, featuring a chilling minimum of -18°C (1°F) and an average temperature of -1°C (30°F), with a maximum of only 16°C (61°F). Although February sees less precipitation at 97 mm (3.8 in) over 13 days, the humidity remains high at 86%. For a deeper look at February weather conditions, check out Matsumoto weather in February.
September and March present quite a contrast in weather conditions. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 30°C (86°F), with an average of 19°C (66°F). The month is also characterized by high humidity at 89% and significant precipitation, totaling 222 mm (8.7 in) across 19 days. In contrast, March experiences much cooler temperatures, with a low of -8°C (17°F) and a high of 21°C (69°F), averaging just 4°C (40°F). Although March has less precipitation, totaling 152 mm (6.0 in) over 14 days, its humidity is slightly lower at 81%. For more detailed information on March weather, check out Matsumoto weather in March.
When comparing the weather in September and April, a clear difference in temperature and humidity emerges. September experiences milder temperatures ranging from a minimum of 6°C (43°F) to a warm maximum of 30°C (86°F), with an average of 19°C (66°F). In contrast, April is much cooler, with minimum temperatures dropping to -5°C (23°F) and an average of just 9°C (48°F), peaking at 26°C (79°F). Additionally, September is characterized by higher humidity at 89% and more frequent rainfall, accumulating 222 mm (8.7 in) over 19 days, while April sees less precipitation, totaling 156 mm (6.1 in) over just 13 days. For more details about April weather in this region, check out Matsumoto weather in April.
When comparing the weather in September and May, notable differences emerge. September typically boasts a wider temperature range, with minimums around 6°C (43°F) and maximums reaching 30°C (86°F), while May starts cooler, with lows dipping to -1°C (31°F) but also has the potential for max temperatures of 30°C (86°F). Precipitation is higher in September at 222 mm (8.7 in) over 19 days, compared to May's 179 mm (7.0 in) over 14 days, indicating a more rainy month in September. Additionally, humidity levels in September are higher at 89%, compared to May’s 81%, contributing to a distinct feeling of mugginess in the air. For more details on May weather, visit Matsumoto weather in May.
When comparing the weather in September and June, we see some intriguing similarities and differences. Both months experience a minimum temperature of around 6°C (43°F), but September typically averages slightly warmer at 19°C (66°F) compared to June's 18°C (65°F). The maximum temperatures are quite close as well, with September reaching 30°C (86°F) and June peaking at 29°C (84°F). Despite the warmer conditions, September sees higher precipitation levels at 222 mm (8.7 in) over 19 days, compared to June's 194 mm (7.7 in) over 16 days. Humidity also remains similar, with September at 89% and June slightly lower at 88%. For more details on June weather, you can check Matsumoto weather in June.
When comparing the weather in September to that of July, we see notable differences in both temperature and precipitation patterns. September experiences a wider temperature range, with minimums dropping to 6°C (43°F) and maximums reaching 30°C (86°F), while July maintains warmer averages, ranging from a minimum of 14°C (58°F) to a maximum of 33°C (91°F). Additionally, July sees higher total precipitation at 333 mm (13.1 in) over 21 days compared to September's 222 mm (8.7 in) over 19 days. Both months feature high humidity levels, with July at 92% and September slightly lower at 89%. For more detailed information on July weather, you can refer to Matsumoto weather in July.
In comparing the weather of September and August, September experiences cooler temperatures, with a minimum of 6°C (43°F) and an average of 19°C (66°F), compared to August's minimum of 11°C (52°F) and an average of 23°C (75°F). While August boasts warmer highs of 34°C (93°F), September's maximum reaches only 30°C (86°F). Precipitation is slightly higher in September, totaling 222 mm (8.7 in) over 19 days, compared to 197 mm (7.8 in) over 17 days in August. Humidity also remains high in both months, with September peaking at 89% and August at 92%. For a closer look at August weather in Matsumoto, check out Matsumoto weather in August.
September and October showcase a notable transition in weather patterns. September experiences warmer temperatures, with a minimum of 6°C (43°F) and an average of 19°C (66°F), peaking at 30°C (86°F). In contrast, October sees temperatures drop significantly, with a minimum of 0°C (33°F) and an average of 13°C (56°F), reaching a maximum of 26°C (79°F). Precipitation also increases from 222 mm (8.7 in) in September to 255 mm (10.1 in) in October, while the number of rainy days remains consistent at 19 days for both months. Humidity stays relatively high, at 89% in September and slightly lower at 87% in October. For more detailed insights, check Matsumoto weather in October.
September and November present noticeably different weather conditions. In September, temperatures range from a mild 6°C (43°F) at night to a warm 30°C (86°F) during the day, with an average of 19°C (66°F). However, this month also witnesses significant rainfall, accumulating 222 mm (8.7 in) over 19 days, and high humidity levels at 89%. In contrast, November features much cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 19°C (67°F), averaging just 7°C (44°F). Rainfall decreases to 83 mm (3.3 in) over 13 days, and humidity drops slightly to 85%. For more detailed insights, check out Matsumoto weather in November.
September and December present contrasting weather conditions. In September, temperatures range from a mild 6°C (43°F) at night to a warm maximum of 30°C (86°F) during the day, with an average temperature of 19°C (66°F). This month is characterized by high humidity at 89% and considerable rainfall, totaling 222 mm (8.7 in) over 19 days. In stark contrast, December experiences much cooler temperatures, with a minimum of -9°C (17°F), an average of 1°C (34°F), and a maximum of 17°C (62°F). While December has lower precipitation at 109 mm (4.3 in) over 16 days, humidity remains moderately high at 86%. For more detailed insights into December weather, visit Matsumoto weather in December.
As September unfolds in Matsumoto, the weather presents a captivating transition from the summer heat to the cooler embrace of autumn. The month sees a delightful blend of mild temperatures, with warm days giving way to refreshing nights, creating a pleasant atmosphere for outdoor activities. However, September is also marked by significant rainfall, with almost two-thirds of the month experiencing precipitation, contributing to the lush landscapes that characterize the region. This period of high humidity casts a soft veil over the surroundings, enhancing the colors of the fall foliage that begins to emerge. For those intrigued by the distinctive weather patterns of Matsumoto, additional insights can be found at Matsumoto Climate.