Last updated: August 21, 2025
September in Akita, Japan offers a unique blend of warm temperatures and significant rainfall. With maximum temperatures reaching a pleasant 31°C (89°F) and an average of 22°C (71°F), the month provides a comfortable climate for outdoor activities, even as it transitions to autumn. However, be prepared for the 17 days of precipitation that cumulatively brings about 181 mm (7.1 in) of rain, accompanied by high humidity levels at 84%. This mix creates a lush environment, making September an ideal time to experience Akita's natural beauty while also packing an umbrella for unexpected showers.
In September, Akita, Japan, experiences a pleasant transition from the heat of summer to the cooler temperatures of autumn. With minimum temperatures averaging around 14°C (58°F) and maximums peaking at 31°C (89°F), this month offers a comfortable warmth that is perfect for enjoying the vibrant fall foliage. The average temperature settles at a welcoming 22°C (71°F), making it an ideal time for outdoor activities and sightseeing. As the days gradually shorten and cooler air begins to creep in, September serves as a beautiful bridge between the summer's swelter and the crispness of fall, heralding a delightful change in Akita’s seasonal landscape.
In September, Akita experiences a substantial precipitation amount of 181 mm (7.1 in), continuing a trend of significant rainfall that begins in the warmer summer months. This marks a slight decrease from August's peak of 229 mm (9.0 in), yet still showcases the region's characteristic moisture as it transitions into autumn. The month also sees 17 days of rain, which reflects a continuation of the rainy season that began in July and persisted through the summer. As October approaches, precipitation levels will rise again, emphasizing Akita's distinctive wet climate, where fall brings both cooler temperatures and a vibrant tapestry of colors under a veil of recurring rain.
As the summer heat begins to wane, September in Akita, Japan, presents a notable dip in humidity to 84%. This transition marks a gradual decline from the sweltering heights of 93% in July and 92% in August, a time when the air feels particularly heavy. The September humidity sits still above the year-long average, reflecting the lingering warmth of summer, but hints at the cooler, crisper days ahead. Following this trend, the humidity continues to decrease through October, stabilizing around 80%, while the autumn months lead into a refreshing shift. Overall, September acts as a bridge, offering a blend of summer’s last embrace and autumn's first hints, as the textures of the air begin to change.
As September rolls in Akita, Japan, residents and visitors should be mindful of the UV Index, which stands at a notable 9, categorizing it as very high. This indicates a continuation of the strong UV radiation levels seen in the preceding summer months. Unlike the peak August, where an extreme index of 11 called for even greater caution, September still demands vigilance with a burn time of just 15 minutes for fair-skinned individuals. This trend of increasing UV Index levels from winter through to late summer highlights the importance of sun protection, particularly as the autumn months approach. For further details and to stay updated on UV levels throughout the year, check Akita UV Index.
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As the warm embrace of summer gently recedes, September in Akita, Japan, offers a harmonious blend of sunshine and the onset of autumn. With 259 hours of radiant sunlight, the month stands out as a transition between the peak brightness of August, which boasts 301 hours, and the dwindling daylight of October at 222 hours. This gradual shift highlights a trend of high sunlight in the summer months, peaking in August, followed by a noticeable decrease as the year heads into its cooler months. Visitors in September can enjoy pleasantly sunny days, making it an ideal time for outdoor adventures, while basking in the glow of the changing seasons.
In Akita, Japan, the probability of enjoying sunny weather peaks during the warmer months, with July boasting the highest chance at 46%. As summer transitions into fall, September retains a favorable 40% likelihood of sunshine, providing a delightful backdrop for outdoor activities. This sunny trend marks a slight decline from the summer highs but is still a significant improvement compared to the winter months, where sunshine chances plummet to as low as 18% in January. Overall, September stands out as a promising time for sun seekers, nestled comfortably between the lush vibrancy of summer and the crisp allure of autumn.
As September unfolds in Akita, Japan, daylight begins to wane, offering approximately 12 hours of light—a gentle transition from the long, sun-soaked days of summer. The trend from July and August, which bask in 14 hours of daylight, gradually shifts as autumn approaches. Following a peak in the warmth of spring and summer, the light recedes slightly in September, setting the stage for the shorter days of October. This rhythm of daylight reflects the region's seasonal dance, where each month naturally composes a cycle that captures the essence of Akita's climate, inviting both reflection and a sense of change as the year progresses.
In September in Akita, Japan, the average wind speed reaches 5.0 m/s (11 mph), marking a gentle transition as summer begins to fade into autumn. This slight increase from August’s 4.5 m/s (10 mph) reflects a gradual build-up in breeziness, characteristic of the changing seasons. As the year progresses, wind speeds fluctuate, peaking in the winter months of January and December at 7.2 m/s (16 mph), while summer sees the calmest conditions with July’s average at a mere 3.4 m/s (8 mph). Overall, September serves as a bridge, offering just enough wind to herald the crispness of fall without overwhelming the lingering warmth of summer.
Weather in Akita varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Akita, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present starkly contrasting weather conditions. September boasts a warm average temperature of 22°C (71°F), with highs reaching up to 31°C (89°F) and a high humidity level of 84%. However, this month experiences considerable rainfall, totaling 181 mm (7.1 in) over 17 days. In contrast, January features a much colder average temperature of just 1°C (35°F), with lows plummeting to -9°C (16°F) and maximum temperatures only reaching 10°C (51°F). Although January has less precipitation at 139 mm (5.5 in), it does occur over a slightly greater number of days, totaling 21. For more details on January's weather specifics, you can check Akita weather in January.
September and February present contrasting weather experiences. In September, temperatures range from a mild 14°C (58°F) at night to a warm maximum of 31°C (89°F) during the day, with an average of 22°C (71°F). However, this month is also characterized by high humidity at 84%, alongside significant rainfall, totaling 181 mm (7.1 in) over 17 days. In stark contrast, February brings a chilly climate, with temperatures dipping as low as -5°C (23°F) and peaking at just 10°C (51°F), averaging around 2°C (35°F). Precipitation is also common but slightly less, at 157 mm (6.2 in) across 23 days, with lower humidity at 78%. For more insights on February weather, check out Akita weather in February.
In September, Akita experiences warm temperatures, with a minimum of 14°C (58°F) and a maximum reaching 31°C (89°F), averaging around 22°C (71°F). This month also sees significant rainfall, totaling 181 mm (7.1 in) over 17 days, combined with high humidity levels of 84%. In contrast, March brings much cooler weather, where temperatures range from a minimum of -5°C (23°F) to a maximum of 14°C (58°F), averaging only 5°C (42°F). Although March has slightly lower precipitation at 127 mm (5.0 in) over the same number of rainy days, it features a lower humidity of 76%. For more detailed insights into March weather, you can visit Akita weather in March.
September and April present quite contrasting weather patterns. In September, temperatures range from a minimum of 14°C (58°F) to a maximum of 31°C (89°F), with an average of 22°C (71°F), creating a warm and humid environment, with an overwhelming humidity level of 84%. The month also sees significant rainfall, accumulating 181 mm (7.1 in) over 17 days.
In stark contrast, April experiences much cooler temperatures, with a minimum of 1°C (35°F) and a maximum of 18°C (65°F), yielding an average of just 9°C (49°F). Although April receives slightly less precipitation at 146 mm (5.7 in) spread across 16 days, it has lower humidity levels at 78%. These differences highlight how September's warmth and humidity sharply contrast April's coolness and milder conditions. For more detailed information, you can visit Akita weather in April.
When comparing the weather in September and May, September tends to be warmer with average temperatures ranging from 14°C (58°F) to a maximum of 31°C (89°F), while May sees cooler temperatures, averaging between 7°C (45°F) and 23°C (74°F). Precipitation is more pronounced in September, with 181 mm (7.1 in) of rainfall over 17 days, compared to May's 144 mm (5.7 in) over 15 days. Humidity levels are slightly higher in May at 86%, versus 84% in September. For more details, you can check out Akita weather in May.
September and June present distinct weather characteristics. In September, temperatures range from a minimum of 14°C (58°F) to a maximum of 31°C (89°F), with an average of 22°C (71°F). The month experiences considerable rainfall, totaling 181 mm (7.1 in) over approximately 17 days and high humidity at 84%. In contrast, June is slightly cooler, with temperatures ranging from 11°C (52°F) to 26°C (80°F) and an average of 19°C (66°F). The precipitation during June is a bit less, at 172 mm (6.8 in) over 13 days, though the humidity is marginally higher at 90%. For a more detailed look at June weather in Akita, you can check Akita weather in June.
In comparing the weather between September and July, we see distinct differences in temperature and humidity. September experiences slightly cooler temperatures, with a minimum of 14°C (58°F) and an average of 22°C (71°F), while July is warmer, starting at a minimum of 17°C (63°F) and averaging 23°C (74°F). Both months see similar maximum temperatures of 31°C (89°F) in September and 31°C (87°F) in July. Precipitation levels are also comparable, with September receiving 181 mm (7.1 in) over 17 days and July slightly higher at 189 mm (7.4 in) over 14 days. Notably, September has a lower humidity level at 84% compared to 93% in July, making it feel somewhat less oppressive. For a more detailed look at July weather, you can check out Akita weather in July.
In comparing the weather between August and September, we see a notable shift in temperatures and precipitation. August features warmer conditions, with average temperatures reaching 25°C (77°F) and a maximum of 33°C (91°F), while September's average temperature drops to 22°C (71°F) with a maximum of 31°C (89°F). Additionally, August experiences higher humidity at 92% compared to September's 84%. However, September sees a larger amount of rainfall, totaling 181 mm (7.1 in) over 17 days, while August has 229 mm (9.0 in) of precipitation over 15 days. For more details on August weather patterns, check out Akita weather in August.
September's weather tends to be warmer, with average temperatures peaking around 22°C (71°F) and maximums reaching up to 31°C (89°F). In contrast, October sees a noticeable drop in temperatures, averaging 16°C (62°F) and topping out at 26°C (78°F). While September experiences approximately 181 mm (7.1 in) of rainfall over 17 days, October is wetter, with precipitation rising to 223 mm (8.8 in) across 16 days. Humidity levels remain relatively high in both months, with September at 84% and October slightly lower at 80%. For a detailed look at the conditions, check out Akita weather in October.
September and November present a striking contrast in weather conditions. In September, temperatures range from a mild 14°C (58°F) at night to a warm 31°C (89°F) during the day, with an average of 22°C (71°F). This month also sees considerable rainfall, totaling 181 mm (7.1 in) over 17 days, and a high humidity level of 84%. In contrast, November brings cooler temperatures, with nighttime lows dropping to 1°C (34°F) and daytime highs reaching only 20°C (68°F), averaging around 10°C (51°F). Additionally, November experiences slightly higher precipitation at 204 mm (8.0 in) over 21 days, though humidity is lower at 76%. For more detailed information, check out Akita weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures typically range from a mild 14°C (58°F) to a warm 31°C (89°F), with an average of 22°C (71°F). However, this month experiences a significant amount of rainfall, collecting 181 mm (7.1 in) over 17 days, along with high humidity levels at 84%. In contrast, December brings much colder temperatures, with a range from a frigid -4°C (26°F) to a maximum of 15°C (60°F), averaging just 4°C (40°F). Additionally, December sees increased precipitation, totaling 249 mm (9.8 in) over more days (28), but with lower humidity at 78%. For more detailed information, you can check Akita weather in December.
As summer gently fades into autumn, September in Akita presents a noticeable shift in weather characteristics. The warmth of the summer persists, with average temperatures still relatively mild, but the increase in precipitation—notably, 17 rainy days—ushers in a more humid atmosphere that can feel quite different from the drier months preceding it. This blend of warmth and moisture creates a dynamic environment, ideal for enjoying the vibrant fall foliage that beckons nature enthusiasts. For a more comprehensive understanding of the seasonal shifts and variations, explore Akita Climate.