Last updated: August 21, 2025
Experience the distinct climate of Hachinohe, Japan in September, where temperatures range from a maximum of 32°C (90°F) to a refreshing minimum of 8°C (46°F). The average temperature settles at a comfortable 20°C (69°F), perfect for exploring the city and its surroundings. Be prepared for rain, as the month sees approximately 100 mm (3.9 in) of precipitation over 11 days, contributing to an impressive humidity level of 89%. Embrace the blend of warm days and cool nights that characterize this vibrant coastal city during early autumn.
In September, Hachinohe experiences a notable transition in temperature as summer gives way to autumn. With lows around 8°C (46°F) and average highs reaching 32°C (90°F), the month retains some warmth from the summer months, yet shows promising signs of cooler days ahead. The average temperature settles at a comfortable 20°C (69°F), making it a delightful time for outdoor activities and enjoying the picturesque fall scenery. As the month progresses, one can expect a gradual dip towards the crispness of October, but for now, September strikes a pleasant balance between the lingering heat of summer and the refreshing coolness of the coming fall.
September in Hachinohe, Japan, typically sees a substantial precipitation amount of 100 mm (3.9 in), marking a notable dip from the high of 151 mm (5.9 in) in August. This month is characterized by 11 rainfall days, maintaining a consistent pattern seen earlier in the summer. As the wettest months of the year begin to transition, September's precipitation can be viewed as a bridge between the summer rains and the more intense downpours of October, which averages 152 mm (6.0 in). This trend highlights a shift in the climate, where the tail end of summer yields to the more dynamic weather patterns of autumn, offering a balanced blend of moisture that supports the verdant landscapes surrounding the region.
In Hachinohe, Japan, September marks a notable transition in humidity levels, averaging 89% as summer's oppressive moisture begins to wane. Following the peak of 97% in August, when the air can feel stifling, September offers a slight reprieve, although the humidity remains relatively high. This month serves as a bridge between the sultry summer and the cooler, drier autumn, as the humidity gradually decreases towards 81% in October. Observing the trend throughout the year reveals a general pattern of increasing humidity from winter’s 79% in January, climbing to a tropical peak in the summer months before gradually receding in the fall. The shifting levels not only reflect the changing seasons but also contribute to Hachinohe's unique climate ambiance, making September a month of subtle yet significant transformation.
As summer fades into September in Hachinohe, the UV Index remains strikingly high at 9, positioning it within the very high exposure category. This reflects a slight decrease from the peak levels of 11 in August, but caution is still advised, with a burn time of just 15 minutes for unprotected skin. The trend throughout the year shows that from the low UV exposure in January, the index steadily climbs, peaking during the sunnier months. By September, while the sun’s intensity begins to wane, it still demands attention to sun safety, making it essential to remain vigilant. As you enjoy the early autumn days, be sure to check the latest information at Hachinohe UV Index for safe sun practices.
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As September unfolds in Hachinohe, the city basks in approximately 252 hours of sunshine, marking a gentle transition from the vibrant summer days. This amount of sunlight is just a shade below the heights of the previous months, reflecting a slight decline as autumn approaches, yet still showcasing a rich tapestry of golden hues and clear skies. Following the peak of 296 hours in May, the sunny disposition of the summer months gradually tapers off, bringing a comforting warmth that invites outdoor activities. With October right around the corner, which typically sees about 220 hours of sunlight, residents are reminded of the natural ebb and flow of the seasons as they enjoy the lingering warmth of early autumn in this picturesque coastal town.
In Hachinohe, Japan, the likelihood of sunny weather in September presents a modest 38% chance of sun. This figure, while higher than the sweltering summer months of July and August, showcases a slight resurgence in sunlit days as autumn approaches. Interestingly, the trend indicates that after experiencing lower sun probabilities during the summer, September marks a transition towards the more favorable conditions seen in October and November. As the days grow shorter and temperatures begin to drop, residents can anticipate a gentle shift back towards more enjoyable, sun-filled moments, making this a delightful time to enjoy the outdoors before the deep chill of winter sets in.
As September arrives in Hachinohe, Japan, the transition from summer begins to subtly unveil itself, marked by a decline in daylight duration to approximately 12 hours. This reduction reflects the gradual shift from the heights of summer, where July and August basked in 14 and 13 hours of sunlight, respectively. Following the vibrant spring months, when daylight extended to a generous 14 hours in May, September signals the start of shorter days, reminiscent of January’s modest 9 hours. The gentle ebb of daylight serves as a reminder of the seasonal cycle, inviting residents to embrace the rich hues of autumn as daylight progressively wanes moving into October and November.
As summer wanes and September arrives in Hachinohe, the average wind speed settles at a gentle 3.4 m/s (8 mph), mirroring the modest breezes of August. This consistent airflow symbolizes a transition, as winds gradually shift from the lighter summer gusts to the more invigorating currents of fall, which begin to re-emerge in October at 3.5 m/s (8 mph). Over the months, it's interesting to observe that while wind speeds fluctuate, they generally showcase a noticeable decline from the blustering heights of early winter, such as 4.8 m/s (11 mph) in January, down through the mellow midsummer months. September stands as a bridge, offering a lull that holds hints of the brisker days ahead, inviting both locals and visitors to appreciate the soft whispers of the wind as they savor the changing season.
Weather in Hachinohe varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Hachinohe, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather features a much warmer climate, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 32°C (90°F) and an average of 20°C (69°F). The month sees significant rainfall, with about 100 mm (3.9 in) of precipitation over 11 days, coupled with high humidity levels of 89%. In contrast, January brings a much colder atmosphere, with minimum temperatures plummeting to -12°C (11°F) and a maximum of only 8°C (47°F), averaging -1°C (31°F). The precipitation decreases to 45 mm (1.8 in) over 8 days, and humidity levels are also lower at 79%. For more detailed information, you can visit Hachinohe weather in January.
September and February showcase stark contrasts in weather patterns. September features a much warmer climate with average temperatures around 20°C (69°F) and a maximum of 32°C (90°F), while February experiences a chillier environment, with average temperatures hovering at 0°C (32°F) and peaking at 12°C (54°F). Precipitation levels in September are significantly higher at 100 mm (3.9 in) over 11 days, compared to February's 63 mm (2.5 in) across the same number of days. Additionally, September's humidity reaches a notable 89%, while February is relatively drier at 78%. For more detailed insights into February weather patterns, you can visit Hachinohe weather in February.
In comparing the weather of September and March, September boasts a much warmer average temperature of 20°C (69°F) with daytime highs reaching up to 32°C (90°F), making it feel quite summery. In contrast, March experiences cooler temperatures, with an average of 5°C (41°F) and nighttime lows that can plummet to -11°C (12°F). While September is relatively humid at 89% and sees about 100 mm of precipitation over 11 days, March is drier, with 83 mm of precipitation over 12 days and lower humidity at 77%. For more details on March weather, you can check Hachinohe weather in March.
When comparing the weather in September and April, distinct differences emerge. September boasts milder temperatures, with a minimum of 8°C (46°F) and an average of 20°C (69°F), peaking at a warm 32°C (90°F). In contrast, April experiences a chillier environment, starting as low as -4°C (26°F), with an average of 9°C (49°F) and a maximum of 25°C (78°F). Both months see a similar amount of precipitation, with September at 100 mm (3.9 in) over 11 days and April slightly higher at 101 mm (4.0 in) over 14 days. Additionally, September tends to feel more humid at 89%, compared to April's lower humidity level of 78%. For more insights, you can explore Hachinohe weather in April.
When comparing the weather in September to that in May, several notable differences emerge. September features a higher average temperature of 20°C (69°F) compared to May's 15°C (60°F), making it feel warmer overall. Both months see the same maximum temperature of 32°C (90°F), but September typically has a more humid atmosphere with a humidity level of 89%, compared to May’s 86%. Precipitation is fairly similar, with September receiving 100 mm (3.9 in) over 11 days and May experiencing slightly less at 93 mm (3.6 in) over the same number of days. For a closer look at May weather specifics, check out Hachinohe weather in May.
In comparing the weather patterns of September and June, we see some notable differences. September typically boasts a broader temperature range, with minimums around 8°C (46°F), average highs reaching 20°C (69°F), and maximums peaking at 32°C (90°F). This month also experiences higher humidity at 89%, with precipitation totaling about 100 mm (3.9 in) over 11 days.
In contrast, June tends to be slightly cooler, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 30°C (87°F) and an average of 18°C (65°F). While the precipitation is comparable at 96 mm (3.8 in) over 12 days, the humidity is slightly higher at 91%. For more detailed insights on June weather, you can check Hachinohe weather in June.
In comparing the weather of September to that of July, we can observe notable differences in temperature and humidity. September features a minimum temperature of 8°C (46°F) and an average of 20°C (69°F), with maximum temperatures reaching 32°C (90°F). In contrast, July starts warmer, with a minimum of 14°C (57°F) and an average of 22°C (73°F), peaking at 35°C (95°F). Moreover, while both months have a similar precipitation pattern with 100 mm (3.9 in) in September over 11 days and 123 mm (4.8 in) in July over 13 days, July's humidity is slightly higher at 95% compared to September's 89%. For more details, you can check Hachinohe weather in July.
In comparing the weather between August and September, we observe a notable decrease in average temperatures, with September experiencing a minimum of 8°C (46°F) and an average of 20°C (69°F) compared to August's minimum of 14°C (57°F) and an average of 24°C (75°F). Furthermore, the maximum temperatures also decline, with September peaking at 32°C (90°F) while August reaches up to 35°C (95°F). Precipitation levels are higher in August, totaling 151 mm (5.9 in) over 14 days, in contrast to September's 100 mm (3.9 in) spread over 11 days. Humidity remains quite high in both months, but is slightly more pronounced in August at 97% compared to September's 89%. For a more detailed look at temperature and rain patterns, you can visit Hachinohe weather in August.
In September, the weather is characterized by warmer temperatures, with a minimum of 8°C (46°F), an average of 20°C (69°F), and a maximum of 32°C (90°F). Humidity is relatively high at 89%, and the month sees about 100 mm (3.9 in) of precipitation over 11 days. In contrast, October ushers in cooler temperatures, dipping to a minimum of 3°C (38°F) and averaging 14°C (58°F), with highs reaching 28°C (83°F). Although there is more precipitation in October, totaling 152 mm (6.0 in) over 10 days, the humidity is slightly lower at 81%. For more detailed information, you can check Hachinohe weather in October.
In September, the weather typically offers a wide temperature range, with minimums around 8°C (46°F), average highs of 20°C (69°F), and peaks reaching up to 32°C (90°F). This month also sees considerable rainfall, accumulating about 100 mm (3.9 in) over approximately 11 days, accompanied by high humidity levels of 89%. In contrast, November experiences significantly cooler temperatures, with minimums dropping to -4°C (25°F) and an average temperature of 8°C (47°F). While it remains mild with maximums reaching 21°C (70°F), November has less precipitation, totaling about 43 mm (1.7 in) over 8 days, and a decrease in humidity to 78%. For more details, you can view the specific climate characteristics at Hachinohe weather in November.
In September, the weather is considerably warmer, with average temperatures around 20°C (69°F) and maximums reaching up to 32°C (90°F), while December brings much colder conditions, with an average temperature of just 2°C (35°F) and highs of 16°C (61°F). September experiences higher humidity at 89% and more rainfall, averaging 100 mm over 11 days, compared to December's 57 mm with precipitation on 9 days and lower humidity at 77%. This stark contrast between the two months highlights the transition from the warmth of early autumn to the chill of winter. For more information on December weather, you can visit Hachinohe weather in December.
As September unfolds in Hachinohe, the transition from summer to autumn becomes strikingly apparent. Temperatures take on a comfortable average, providing a delightful reprieve from the summer heat, yet retaining enough warmth to enjoy the outdoors. The elevated humidity enhances the atmosphere, and with nearly half the month experiencing precipitation, the landscape emerges lush and vibrant. This balance of warmth and moisture sets September apart from both the sweltering summer and the cool, crisp autumn months ahead. For a deeper understanding of Hachinohe's weather patterns throughout the year, explore more about the Hachinohe Climate.