Last updated: August 21, 2025
In September, Toyama, Japan experiences a mix of warm days and increasing rainfall, setting the stage for a dynamic transition into autumn. With maximum temperatures reaching up to 34°C (94°F) and an average of 22°C (73°F), this month offers plenty of warmth, though nights can be cooler, dipping to a minimum of 12°C (54°F). Rainfall is a significant aspect, with 223 mm (8.8 in) of precipitation across 17 days, leading to a notably humid environment with levels around 84%. This vibrant weather pattern not only enhances the region's lush landscapes but also invites visitors to explore Toyama's natural beauty amidst the changing seasons.
In September, Toyama, Japan, experiences a gentle transition from the sweltering summer heat to the cooler autumn vibes. With minimum temperatures averaging around 12°C (54°F) and reaching up to a comfortable 34°C (94°F), the month offers an inviting balance for residents and visitors alike. The average temperature of 22°C (73°F) reflects the last whispers of summer while hinting at the crispness to come. Following the peak of summer, this month shows a noticeable dip in temperatures compared to August, marking the beginning of a gradual shift that will see the city embracing a cooler and more refreshing climate in the following months. Whether you’re strolling along the scenic coast or exploring the vibrant local culture, September serves as a delightful transition into the more temperate days of autumn.
September in Toyama, Japan, brings a noteworthy average precipitation of 223 mm (8.8 in) over 17 rainy days, contributing to the region's lush landscapes as it transitions into autumn. Following the heavy downpours of July, which recorded a staggering 357 mm (14.0 in), and the substantial 264 mm (10.4 in) in August, September’s rainfall marks a slight decrease yet remains significant. This month serves as a transitional period, nestled between the intense summer rains and the cooler, wetter conditions of October, which has 216 mm (8.5 in) of precipitation forecasted. The relatively stable rainfall pattern underscores the humid subtropical climate of Toyama, highlighting its capacity for vibrant flora while also reminding residents and visitors alike to prepare for the persistent autumn showers ahead.
In September, Toyama, Japan, experiences a notable decrease in humidity, with levels settling at 84% after the sweltering summer months. This shift marks a transition from the peak summer humidity of 93% in July and 92% in August, signaling the onset of a more comfortable fall. Throughout the year, humidity levels fluctuate, peaking in mid-summer and gradually falling as autumn approaches. With September's relative drop, residents and visitors alike can enjoy a refreshing change, yet the air remains rich enough in moisture to retain the region's lush greenery. As the month winds down, average humidity trends suggest a return to the steadier levels of October, which sees a further slight decrease to 81%.
As September rolls into Toyama, Japan, the UV Index remains at a very high level of 10, indicating that, while summer is fading, the sun still demands respect. With a burn time of just 15 minutes, this month is a reminder to remain vigilant about sun protection, especially after the extreme levels observed in June through August. The downward trend from the scorching summer months suggests a shift towards milder conditions, yet the potential for skin damage persists. To stay informed and safe while enjoying the early autumn days, it’s wise to keep an eye on the UV Index by checking out Toyama UV Index.
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In September, Toyama basks in a delightful 249 hours of sunshine, marking a transition from the bright glow of summer to the cooler embrace of autumn. This month captures the essence of late summer warmth, standing out as a vibrant time when daylight begins to wane, but not without a flourish. The sun-soaked hours reflect a slight decline from August's peak of 300 hours, yet September still offers ample opportunities for outdoor adventures and scenic explorations. As the year progresses, the hours of sunshine gradually decrease, hinting at the arriving chill of fall; however, the lingering warmth of September remains a cherished treat in Toyama’s climatic tapestry.
In Toyama, Japan, September offers a 33% chance of sunny weather, which reflects a slight increase compared to the summer months. As the summer warmth begins to wane, the likelihood of clear skies improves, standing in contrast to August's dip to 24%. This trend of fluctuating sunshine continues into October and November, where possibilities rise again to 47% and 48%, respectively. With the transition into autumn, September strikes a balance, presenting an opportunity to enjoy mild temperatures and occasional sunny days before the seasons change once more.
As summer transitions into autumn, September in Toyama, Japan, experiences a subtler shift in daylight, with approximately 12 hours of sunshine each day. This slight decline from the vibrant 14 hours enjoyed during the peak summer months of June through August reflects the gradual onset of fall. Overall, September's daylight duration is still quite favorable compared to the earlier months of the year, with a notable increase from the 9 hours found in January. As the days grow shorter leading into October, Toyama residents can savor the lingering light of early autumn—ideal for outdoor activities and appreciating the region's stunning natural beauty.
As summer transitions to autumn in Toyama, Japan, September brings a gentle shift in the winds, with average wind speeds settling at 1.9 m/s (4 mph). This breezy month reflects a notable decline from the stronger gusts experienced earlier in the year, particularly from January to May, when wind speeds hovered around 2.6 to 3.3 m/s (6 to 7 mph). By mid-year, the winds soften even further, culminating in the calm atmosphere of September. This tranquil breeze invites residents and visitors alike to enjoy the beautiful landscapes of Toyama, creating a serene backdrop for the onset of fall, before winds gradually pick up again in October. Overall, the progressive decrease in wind speeds from summer through early autumn not only highlights the seasonal changes but also sets a peaceful tone as the year begins to wind down.
Weather in Toyama varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Toyama, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, Toyama experiences warmer temperatures, with averages around 22°C (73°F) and highs reaching up to 34°C (94°F), creating a humid atmosphere with an average humidity of 84%. However, this month also brings considerable rainfall, with precipitation occurring on 17 days and totaling 223 mm (8.8 in). In contrast, January sees much colder conditions, where temperatures drop significantly, with average highs only reaching 15°C (59°F) and lows plummeting to -5°C (23°F). Despite slightly lower precipitation at 197 mm (7.8 in) over 21 days, January’s humidity remains high at 80%, contributing to a chilly and damp winter experience. For more details on January weather in Toyama, check out Toyama weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 34°C (94°F), with an average of 22°C (73°F), making it a much warmer month compared to February. Precipitation is significant in September, averaging 223 mm (8.8 in) over 17 days, and humidity is relatively high at 84%. In contrast, February experiences much cooler temperatures, with a minimum of -6°C (22°F), an average of 3°C (37°F), and a peak of 18°C (64°F). Although it sees less rainfall at 179 mm (7.0 in), it is present over more days, totaling 20. Humidity in February is lower at 78%. For more insights into February weather, you can visit Toyama weather in February.
In comparing the weather between September and March, it's evident that September is significantly warmer, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 34°C (94°F), compared to March's cooler range of -3°C (27°F) to 21°C (71°F). September also experiences higher humidity levels at 84%, while March maintains a slightly lower humidity of 76%. Additionally, September sees more precipitation, totaling 223 mm (8.8 in) over 17 days, versus March's 167 mm (6.6 in) over the same number of days. For more detailed insights into March weather, you can check out Toyama weather in March.
September and April present distinct weather patterns, highlighting the transition between seasons. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 34°C (94°F), with an average of 22°C (73°F). The month sees significant rainfall, totaling 223 mm (8.8 in) over 17 days, accompanied by high humidity at 84%. In contrast, April offers cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 27°C (81°F), averaging 12°C (53°F). Precipitation in April is less frequent, totaling 179 mm (7.0 in) across 15 days and features a lower humidity level of 77%. For more specific details about April weather, you can visit Toyama weather in April.
September and May exhibit distinct weather patterns, reflecting the transition between summer and autumn and the arrival of spring, respectively. In September, temperatures are higher overall, with a minimum of 12°C (54°F) and an average of 22°C (73°F), peaking at a warm 34°C (94°F). However, this month also experiences a considerable amount of rainfall, totaling 223 mm (8.8 in) over 17 days, coupled with high humidity at 84%. In contrast, May is cooler with a minimum temperature of 5°C (42°F) and an average of 17°C (64°F), comfortably reaching a maximum of 30°C (85°F). Although May has less precipitation, accumulating 158 mm (6.2 in) across 15 days, it maintains a similar humidity level at 85%. For more details on May weather, visit Toyama weather in May.
When comparing the weather in September and June, we notice some distinct differences. September generally experiences a wider temperature range with a minimum of 12°C (54°F) and a maximum of 34°C (94°F), while June is slightly cooler, starting at 10°C (51°F) and peaking at 30°C (87°F). Although September averages a warmer temperature of 22°C (73°F) compared to June’s 21°C (69°F), it also brings more precipitation, with 223 mm (8.8 inches) over 17 days, compared to June’s 190 mm (7.5 inches) over 15 days. Additionally, September has a humidity level of 84%, slightly lower than June's 89%. For more details, you can refer to Toyama weather in June.
In comparing the weather of September and July, September tends to be slightly cooler, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 34°C (94°F), while July maintains warmer nights, registering a minimum of 19°C (66°F) and an average of 25°C (78°F). Both months can reach similar highs of 34°C, but July experiences more intense humidity at 93% compared to September's 84%. Precipitation is also notably higher in July, with 357 mm (14.0 in) over 23 days, while September sees 223 mm (8.8 in) over 17 days. For more detailed insights on July's weather, you can visit Toyama weather in July.
September weather presents a noticeable shift compared to August, as temperatures decrease slightly, with September's minimum at 12°C (54°F) compared to August's 16°C (61°F) minimum. The average temperature in September is 22°C (73°F), lower than August's warmer average of 27°C (80°F), though max temperatures remain comparable, with September reaching up to 34°C (94°F) and August peaking at 35°C (96°F). Precipitation is also notable, with September accumulating 223 mm (8.8 in) over 17 days, while August sees more rainfall at 264 mm (10.4 in) across 19 days. Humidity levels are higher in August at 92%, compared to September’s 84%. For more information, you can check Toyama weather in August.
September weather is characterized by warmer temperatures, with a minimum of 12°C (54°F) and an average high of 34°C (94°F). The month also sees significant rainfall, totaling 223 mm (8.8 in) over 17 days, accompanied by high humidity at 84%. In contrast, October brings cooler temperatures, with a minimum of 8°C (46°F) and an average high of 31°C (87°F). Precipitation remains similar, at 216 mm (8.5 in) over the same number of days, but humidity drops slightly to 81%. You can find more details about the weather in October at Toyama weather in October.
September and November weather exhibit a significant contrast in temperature and precipitation. In September, temperatures range from a mild 12°C (54°F) at night to a hot 34°C (94°F) during the day, while November sees much cooler temperatures with a minimum of 1°C (34°F) and a maximum of 25°C (76°F). Precipitation is notably higher in September, with 223 mm (8.8 in) spread over 17 days, compared to November's 135 mm (5.3 in) over 14 days. Humidity levels also differ slightly, with September experiencing 84% and November at 77%. For more details on November weather, check out Toyama weather in November.
In September, the weather in Toyama is generally warm, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 34°C (94°F). The month experiences substantial precipitation, totaling 223 mm (8.8 in) over 17 days, accompanied by high humidity levels at 84%. In contrast, December sees a significant drop in temperatures, with a minimum of -4°C (24°F) and an average of 5°C (42°F), while the maximum reaches 21°C (71°F). Although December has slightly more precipitation at 231 mm (9.1 in) over 23 days, it has a lower humidity of 79%. For a more detailed look at the weather in December, you can visit Toyama weather in December.
As September unfolds in Toyama, the weather shifts notably from the scorching summer heat, with temperatures averaging a comfortable 22°C, while still reaching highs of 34°C. This month is characterized by increased humidity, averaging 84%, and a significant amount of precipitation, with rain on about 17 days. Unlike the arid extremes of summer, September invites a refreshing change, as the lush landscapes thrive with the moisture. If you're looking to understand the broader patterns of Toyama's climate, visit Toyama Climate for more insight.