Last updated: August 21, 2025
In September, Hashima, Japan experiences a diverse range of weather conditions characterized by significant temperature fluctuations. With a maximum of 37°C (98°F) and an average of 25°C (76°F), the warmth can be quite palpable, while nighttime lows dip to a refreshing 12°C (54°F). This month also sees substantial rainfall, accumulating to 225 mm (8.9 in) over 16 days, contributing to the region's lush environment. Coupled with a high humidity level of 87%, the climate can feel quite tropical, making September a vibrant yet challenging time for residents and visitors alike.
In September, Hashima, Japan begins to transition from the sweltering heat of summer to the milder temperatures of fall. With minimums around 12°C (54°F) and average highs reaching 37°C (98°F), the month retains a summery warmth, making it one of the last hurrahs of the hot season. Notably, the average temperature settles at a comfortable 25°C (76°F), offering a perfect balance for outdoor activities while hinting at the cooler days ahead. As the month progresses, the decline from the peak summer heat is palpable, with temperatures gradually steering towards the crispness of autumn, inviting locals and visitors alike to savor the seasonal change.
In September, Hashima, Japan, experiences a notable shift in weather patterns, characterized by a significant precipitation total of 225 mm (8.9 in) over 16 days of rain. This marks a slight decrease from the heavy downpours of July and the still substantial amounts in August, which saw 384 mm and 253 mm, respectively. The humidity and rainfall continue to set the stage for the transition into autumn, keeping nature lush and vibrant. As the month progresses, October brings only a modest increase in precipitation to 246 mm (9.7 in), suggesting that the region is moving from peak summer rains into a more balanced climatic rhythm. This trend highlights Hashima’s dynamic weather cycle as it gracefully shifts through the seasons, embracing both the intensity of summer and the subdued tones of fall.
In September, Hashima, Japan, experiences a notable humidity level of 87%, reflecting the tail end of the summer season. As the hottest months draw to a close, there’s a slight dip from the peak humidity levels observed in July and August, which reach a sweltering 93% and 91%, respectively. This drop, while subtle, suggests a gradual transition towards the drier autumn months. Notably, preceding months like June and May also showcase elevated humidity at 87% and 83%, respectively, indicating a pattern of high moisture that characterizes Hashima’s climate during the warmer half of the year. As the city moves into October with an expected humidity of 85%, residents can look forward to a slight reprieve as the cooler air begins to settle in.
As summer fades into autumn, Hashima, Japan, witnesses a slight shift in its UV Index for September, which stands at 10, categorizing it as very high and indicating a burn time of just 15 minutes. This trend follows a series of months marked by extreme UV levels, peaking at 11 from May through August. Although September's index declines slightly, it still demands careful sun protection comparable to earlier summer months. As the year turns, a gradual decrease is anticipated, but until then, residents and visitors alike should remain vigilant about sun exposure. For more detailed information, visit Hashima UV Index.
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September in Hashima, Japan, bathes the island in a warm glow with 244 hours of sunshine, maintaining a vibrant energy as summer transitions into fall. Although this month sees a slight dip in sunlight compared to the sun-kissed days of August, which boasts 300 hours, the overall trend shows September still holds its own with significantly more sunshine than the chillier winter months. From a low of 185 hours in January to a seasonal peak in May, the sunshine hours gradually rise throughout the spring and summer, illustrating the island’s clear commitment to embracing the sun as the year progresses. This delightful September weather invites visitors and locals alike to enjoy the melding of late summer warmth and early autumn charm.
In Hashima, Japan, September marks a significant dip in sunny weather, with only a 29% chance of clear skies. As summer fades, the likelihood of sunshine declines from the slightly higher percentages seen in July and August. This trend continues into the autumn months, where the probability of sunny days climbs again, peaking in October at 56% and maintaining a solid 59% in November. This establishes September as a transitional month, where the bright days of summer gently give way to the cooler, more stable conditions of fall. If you're planning to visit Hashima in September, be prepared for a mix of sun and clouds as the season shifts.
In September, daylight in Hashima, Japan, gracefully transitions as it begins to wane with a total of 12 hours of sunlight. Following the vibrant summer months of July and August, which both enjoyed 14 hours of daylight, September marks a subtle shift towards the shorter days of autumn. This decline in daylight is part of a broader trend that starts with April's longer days, peaking in May and June at 14 hours before gradually decreasing. As the year progresses toward winter, the days continue to shorten, emphasizing the natural rhythm of the seasons in this picturesque region.
In September, the wind in Hashima, Japan tends to whisper softly, with an average speed of 1.7 m/s (4 mph), marking it as one of the calmest months of the year. This gentle breeze follows a gradual decline from the more robust winds of early spring, where speeds peak at 3.0 m/s (7 mph) in April and March. After the summer's warmer months, characterized by a slight increase in wind speed, September's breath slows, hinting at the approach of autumn's tranquility. This serene shift sets the stage for a reflective time, as the winds prepare to gradually pick up again in the months to come, echoing the cyclical rhythm of nature.
Weather in Hashima varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Hashima, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by warm temperatures, with daily averages around 25°C (76°F) and highs reaching up to 37°C (98°F), making it one of the hottest months. This warm period is also marked by high humidity at 87% and significant rainfall, averaging 225 mm (8.9 inches) over 16 days. In contrast, January experiences a dramatic drop in temperatures, with an average of just 5°C (41°F) and maximums peaking at 18°C (64°F). The month is significantly drier, with only 52 mm (2.0 inches) of precipitation over just 7 days, and humidity levels slightly lower at 82%. For more details on January weather, visit Hashima weather in January.
September and February present stark contrasts in weather patterns. In September, temperatures range from a mild 12°C (54°F) at night to a scorching 37°C (98°F) during the day, with an average of 25°C (76°F). The month is also characterized by high humidity at 87% and significant rainfall, accumulating to 225 mm (8.9 in) over 16 rainy days. In contrast, February experiences much cooler temperatures, with a minimum of -5°C (24°F) and a maximum of 22°C (71°F), averaging just 6°C (42°F). Precipitation is significantly lower in February, totaling 59 mm (2.3 in) spread over just 6 days, and the humidity is slightly lower at 79%. For a closer look at February’s weather, visit Hashima weather in February.
In comparing the weather of September and March, significant differences emerge. September features a warm climate with average temperatures around 25°C (76°F) and peaks reaching up to 37°C (98°F), accompanied by high humidity at 87% and considerable rainfall of 225 mm (8.9 in) over approximately 16 rainy days. In contrast, March presents a cooler atmosphere, with temperatures ranging from a chilly minimum of -1°C (30°F) to a pleasant maximum of 25°C (77°F), and lower overall precipitation totaling 151 mm (6.0 in) across 11 days, leading to a more moderate humidity of 74%. These variations highlight the transition from the warmth and humidity of late summer to the crispness of early spring. For more specific details about weather during this month, check Hashima weather in March.
September and April showcase distinctly different weather patterns. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 37°C (98°F), with an average of 25°C (76°F). This month is characterized by high humidity at 87% and considerable rainfall, totaling 225 mm (8.9 in) over approximately 16 days. In contrast, April presents a cooler climate with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 29°C (84°F), and an average of 14°C (58°F). The precipitation is less intense, measuring 163 mm (6.4 in) over about 10 days, and the humidity is relatively lower at 76%. For more specific insights, you can check out Hashima weather in April.
When comparing the weather in September and May, it’s clear that both months exhibit distinct characteristics. September boasts warmer temperatures, with averages around 25°C (76°F) and maximums reaching up to 37°C (98°F), while May is generally cooler, featuring an average of 19°C (67°F) and maximums of 32°C (90°F). Additionally, September experiences more precipitation, with about 225 mm (8.9 in) spread over 16 days, compared to May's 196 mm (7.7 in) over just 11 days. Humidity levels are slightly higher in September at 87%, compared to 83% in May. For more detailed information, you can check Hashima weather in May.
September and June weather shows some interesting contrasts while maintaining similar humidity levels of 87%. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 37°C (98°F), with an average of 25°C (76°F). In contrast, June is slightly cooler, with temperatures ranging from 12°C (54°F) to a maximum of 33°C (91°F) and an average of 23°C (74°F). Additionally, September sees more rainfall, with 225 mm (8.9 in) over 16 days compared to June's 196 mm (7.7 in) over 14 days. For further details, you can explore Hashima weather in June.
When comparing the weather in September and July, July tends to be warmer with an average temperature of 27°C (81°F) and a maximum reach of 38°C (101°F), while September's average dips to 25°C (76°F) with a maximum of 37°C (98°F). Both months experience significant humidity, with July peaking at 93% and September slightly lower at 87%. Precipitation is more pronounced in July, with 384 mm (15.1 in) recorded over 23 days compared to September's 225 mm (8.9 in) across 16 days. For a detailed look at the weather conditions in July, you can visit Hashima weather in July.
Comparing the weather in September to that of August reveals some notable differences. September experiences slightly cooler temperatures, with a minimum of 12°C (54°F) and an average of 25°C (76°F), compared to August's milder minimum of 19°C (67°F) and average of 29°C (84°F). The maximum temperatures remain similar, peaking at 37°C (98°F) in September and 38°C (100°F) in August. Precipitation levels are also high in both months, but September sees a decrease in total rainfall, with 225 mm (8.9 in) over 16 days versus August's 253 mm (10.0 in) over the same number of days. Humidity is slightly lower in September at 87%, compared to 91% in August, contributing to a feeling of increased comfort as the month progresses. For more detailed information on August weather patterns, check out Hashima weather in August.
September and October present noticeably different weather patterns. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 37°C (98°F), with an average of 25°C (76°F). The month sees significant rainfall, with 225 mm (8.9 in) of precipitation over 16 days and high humidity at 87%. Conversely, October brings cooler temperatures, with a minimum of 7°C (44°F) and a maximum of 32°C (90°F), resulting in an average of 19°C (66°F). Precipitation increases slightly to 246 mm (9.7 in) but occurs over fewer days, totaling 14 days, while humidity remains relatively high at 85%. For a detailed look into October's weather, check out Hashima weather in October.
September weather is characterized by significantly warmer temperatures, with daily averages reaching up to 25°C (76°F) and maximums soaring to 37°C (98°F). In contrast, November brings much cooler conditions, with average temperatures dropping to 13°C (55°F) and highs peaking at 24°C (76°F). Additionally, September experiences a high level of humidity at 87% and substantial rainfall of 225 mm (8.9 in) over 16 days, while November sees a lower precipitation level of 61 mm (2.4 in) across just 5 days and slightly decreased humidity at 83%. For a detailed look at weather conditions in November, check out Hashima weather in November.
September and December weather present a striking contrast. In September, temperatures range from a mild 12°C (54°F) to a sweltering 37°C (98°F), with an average of 25°C (76°F). The month sees significant rainfall, totaling 225 mm (8.9 in) over 16 days, and the humidity hovers at a high 87%. In comparison, December brings a notable drop in temperatures, with a minimum of -5°C (24°F), an average of 7°C (45°F), and a maximum of 20°C (68°F). Precipitation decreases to 68 mm (2.7 in) over just 7 days, while humidity remains relatively low at 83%. For more details on December weather, you can check Hashima weather in December.
As summer transitions into autumn, September in Hashima showcases a noticeable shift in weather patterns compared to the preceding months. With an average temperature of 25°C (76°F), the warmth still lingers, but it's tempered by increased humidity levels of 87%, creating a more opportune environment for precipitation. This month experiences significant rainfall, averaging 225 mm over 16 days—much higher than the drier summer months. The combination of warm temperatures and higher moisture can make the atmosphere feel quite muggy, marking a distinct change in the climate as the region prepares for fall. For those curious about more extensive weather trends, Hashima Climate provides an insightful overview.