Last updated: August 21, 2025
In September, Kirishima, Japan experiences a mix of warm temperatures and considerable rainfall, making it a unique time of year. With maximums reaching 33°C (91°F) and an average temperature of 25°C (77°F), outdoor enthusiasts can enjoy the lingering warmth. However, the month is also marked by a significant precipitation total of 248 mm (9.8 in) over approximately 18 days, creating a lush, verdant landscape. The high humidity levels around 80% can add a muggy feel to the air, inviting visitors to embrace both the vibrant hues of nature and the challenges of the wet season.
September in Kirishima, Japan, marks a transitional phase as summer gracefully yields to autumn. With temperatures ranging from a pleasant 14°C (57°F) at night to a warm 33°C (91°F) during the day, this month showcases a comfortable average of 25°C (77°F). As the humidity of the preceding summer months begins to dissipate, the weather remains inviting, making it an ideal time for outdoor activities. Notably, September maintains warmth similar to August but hints at cooler temperatures ahead, with the maximums gradually decreasing as the region approaches the crispness of October. This blend of warm days and cooler nights creates a refreshing atmosphere, perfect for enjoying the vibrant fall foliage that follows.
In September, Kirishima experiences a notable shift in its rainfall patterns, recording 248 mm (9.8 in) of precipitation over 18 days. This marks a decline from the intense summer months, including July and June, where rainfall peaked at 406 mm (16.0 in) and 392 mm (15.4 in), respectively. As the summer heat wanes, September yields a substantial amount of rain, contributing to the lush landscapes characteristic of the region. Despite this, the rainfall is less intense than in the preceding months, setting the stage for a transitional period into autumn as the weather gradually dries out. The consistency in precipitation days, similar to the previous month of August, suggests that while the deluge may be easing, the rhythm of rain is far from over, as Kirishima prepares for the cooler and less wet months ahead.
September in Kirishima, Japan, marks a subtle transition as humidity levels settle at 80%. This figure reflects a gradual decrease from the peak of 90% in July, indicative of the region's shift from the sweltering summer months. Although humidity remains high in September, it's a relief compared to the intense levels experienced during the height of summer. The trend shows that as the seasons change, humidity gradually declines, paving the way for the crisp, refreshing air of autumn. This month acts as a bridge, maintaining a lush atmosphere while hinting at the more moderate conditions to come in October and November.
As summer winds down, September in Kirishima, Japan, presents an UV Index of 11, which places it in the extreme exposure category. This slight dip from August's peak of 13 indicates that while the intensity may be slightly reduced, caution is still crucial, as the burn time remains a swift 10 minutes. This trend of elevated UV levels from May through September underscores the need for effective sun protection during this period. The transition into October will bring a relief with a UV Index of 8, yet it's a reminder that the sun's rays can still be potent even as the seasons change. For detailed insights and updates, check out the full Kirishima UV Index.
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September in Kirishima, Japan, basks in a generous 270 hours of sunshine, continuing the sunlit trend that peaks in the summer months. After the vibrant warmth of August with its exceptional 311 hours, September sees a slight but steady decline in sunlight, characteristic of the transition into autumn. This month still retains a robust amount of sunshine compared to earlier months, marking a significant shift from the cold grip of winter with just 196 hours in January. As the year progresses, Kirishima witnesses a fascinating ebb and flow of daylight, with each season offering a unique tapestry of sunlight, making September a perfect time to enjoy the lingering warmth and vibrant scenery before the chill of October sets in.
As September rolls in, Kirishima, Japan, experiences a moderate 34% chance of sunny weather, which hints at a pleasant transition from the summer humidity. Although this percentage is a slight improvement from the summer months, when the likelihood of sunshine dips to around 16% in June and July, it still falls short of the vibrant autumnal peaks seen in October and December, where sunny days rise to 55% and 56%, respectively. Overall, September delights visitors with the potential for clearer skies and milder temperatures, offering a welcome respite before the rainy season returns.
As summer gracefully transitions into autumn, September in Kirishima, Japan, witnesses a subtle shift in daylight duration. With 12 hours of daylight, this month marks a gentle decline from the sun-drenched days of June, which boasts a peak of 14 hours. The length of daylight begins to taper off after the summer months, mirroring the natural rhythm of the seasons. Following September, daylight hours will continue to shorten, dropping to 11 hours in October, then reaching 10 hours in the depths of winter. This gradual change not only emphasizes the beauty of seasonal transitions but also invites residents and visitors alike to savor the lingering warmth and light before the days grow shorter.
As September unfolds in Kirishima, Japan, the gentle autumn breeze begins to replace the summer warmth, with an average wind speed of 1.9 m/s (4 mph). This slight dip from the preceding months marks a trend of reduced winds, which have generally hovered between 1.8 m/s and 3.0 m/s throughout the year. The calmness of September is complemented by the soothing sounds of rustling leaves, hinting at the transition towards the more vigorous winds of late autumn. Interestingly, the average speeds rise again into the winter months, suggesting that while September may feel tranquil, nature is preparing for a robust shift as the year progresses. Overall, this month acts as a serene pause before the energies of October and November return, setting the stage for the dynamic changes of the upcoming seasons.
Weather in Kirishima varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kirishima, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is notably warmer with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 33°C (91°F), averaging at 25°C (77°F). This month experiences significant rainfall, with 248 mm (9.8 in) falling over 18 days and humidity levels peaking at 80%. In contrast, January brings much cooler conditions, with temperatures dipping as low as -5°C (23°F) and peaking at 20°C (68°F), averaging just 7°C (44°F). Precipitation is considerably lower in January, totaling 54 mm (2.1 in) over only 6 days, and humidity drops to 72%. For more insights on January weather, check out Kirishima weather in January.
September and February present a stark contrast in weather conditions. In September, temperatures range significantly from a minimum of 14°C (57°F) to a maximum of 33°C (91°F), with an average of 25°C (77°F). This month is characterized by high humidity at 80% and substantial precipitation, totaling 248 mm (9.8 in) over 18 days. In contrast, February experiences much cooler temperatures, with a minimum of -4°C (26°F) and an average of 8°C (46°F), reaching a maximum of 21°C (70°F). Precipitation is lighter in February, at just 101 mm (4.0 in) across 10 days, and the humidity is lower at 68%. For further details on February weather specifics, you can refer to Kirishima weather in February.
In September, the weather is notably warmer, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 33°C (91°F) and an average of 25°C (77°F). This month also experiences significant rainfall, with 248 mm (9.8 in) of precipitation spread across 18 days, accompanied by high humidity levels of 80%. In contrast, March presents a much cooler climate, featuring temperatures that range from a chilly 0°C (32°F) to a maximum of 24°C (75°F), with an average temperature of 12°C (54°F). Precipitation in March is lower at 169 mm (6.6 in) over 13 days, and humidity is somewhat less at 72%. For a more detailed look at March weather in this region, you can visit Kirishima weather in March.
The weather in September presents a warm and humid climate, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 33°C (91°F) and an average of 25°C (77°F). This month is characterized by significant rainfall, recording 248 mm (9.8 in) over 18 days, contributing to a humid atmosphere with levels around 80%. In contrast, April is much cooler, with temperatures dipping to a minimum of 3°C (37°F) and peaking at 28°C (82°F), averaging 16°C (60°F). Although it experiences less precipitation than September, with 149 mm (5.9 in) over 10 days, the humidity remains relatively steady at 79%. For more detailed insights on April's climate, you can visit Kirishima weather in April.
In comparing the weather between September and May, September tends to be warmer, with average temperatures reaching around 25°C (77°F) compared to May's average of 20°C (68°F). However, while September can peak at a maximum of 33°C (91°F), it also experiences significantly more rainfall, with 248 mm (9.8 in) of precipitation over 18 days, compared to May's 252 mm (9.9 in) over just 12 days. Humidity levels are slightly higher in May at 83%, but close to September's 80%. For those interested in the specifics of May weather in the Kirishima region, detailed information can be found here: Kirishima weather in May.
In comparing the weather between September and June, we can observe some notable differences. September typically offers a more balanced temperature range, with averages reaching up to 25°C (77°F) and maximums of 33°C (91°F), while June is slightly cooler, averaging 23°C (73°F) and peaking at a maximum of 31°C (89°F). However, June experiences higher precipitation levels, with 392 mm (15.4 in) over 19 days compared to September's 248 mm (9.8 in) spread over 18 days. Humidity is also slightly elevated in June, averaging 86% compared to September's 80%. For those interested in the specifics of June weather in this region, further details can be found here: Kirishima weather in June.
In comparing the weather between July and September, it's clear that both months feature warm temperatures, but there are notable differences. July displays slightly warmer conditions with a minimum temperature of 17°C (63°F) and an average of 26°C (80°F), reaching up to a maximum of 34°C (94°F). In contrast, September cools down a bit, with a minimum of 14°C (57°F) and an average of 25°C (77°F), peaking at 33°C (91°F).
However, July experiences more significant precipitation, totaling 406 mm (16.0 in) over 23 days compared to September's 248 mm (9.8 in) over 18 days. The humidity is also higher in July at 90%, while September sees a slight decrease to 80%. For more detailed information about Kirishima's weather specifically in July, you can visit Kirishima weather in July.
In comparing the weather between September and August, September presents a more moderate climate with minimum temperatures dropping to 14°C (57°F) and average temperatures of 25°C (77°F), compared to August’s warmer minimum of 20°C (68°F) and an average of 27°C (82°F). September also experiences a max temperature of 33°C (91°F), which is notably cooler than August's peak of 36°C (98°F). While both months have 18 days of precipitation, September sees a higher total of 248 mm (9.8 in) compared to August’s 204 mm (8.0 in), contributing to the increased humidity of 80% in September versus 85% in August. For more specific details about the August climate, you can refer to Kirishima weather in August.
September tends to be warmer and wetter than October. With an average temperature peaking at 25°C (77°F) and maximums reaching 33°C (91°F), September experiences more humid conditions (80%) and a significant amount of rainfall, totaling 248 mm (9.8 in) over 18 days. In contrast, October sees cooler temperatures, with a minimum of 7°C (45°F) and an average of 20°C (68°F), along with a decline in precipitation to 143 mm (5.6 in) spread across just 10 days. The humidity also slightly decreases to 78%, making October generally more comfortable. For more details on October’s weather, you can visit Kirishima weather in October.
September weather is characterized by warm temperatures, with averages around 25°C (77°F) and highs reaching up to 33°C (91°F). However, it also brings significant rainfall, with 248 mm (9.8 in) of precipitation spread over 18 days, resulting in high humidity levels of about 80%. In contrast, November experiences much cooler temperatures, where the average drops to 14°C (57°F) and the maximum reaches only 25°C (77°F), with minimum temperatures dipping to -1°C (31°F). November is significantly drier, seeing only 91 mm (3.6 in) of precipitation over just 8 days, contributing to a slightly lower humidity at 76%. For more details on November weather, you can check out this link: Kirishima weather in November.
September and December display strikingly different weather patterns. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 33°C (91°F), with an average of 25°C (77°F). The month is characterized by high humidity at 80% and significant rainfall, totaling 248 mm (9.8 in) over 18 days. In contrast, December experiences much cooler temperatures, with a minimum of -2°C (28°F) and an average of 8°C (47°F), peaking at 24°C (75°F). Precipitation drops to 79 mm (3.1 in) over just 7 days, and humidity decreases slightly to 74%. For more detailed information, you can visit Kirishima weather in December.
As September rolls in, Kirishima's weather transforms significantly compared to the sizzling summer months. With an average temperature around 25°C, it offers a respite from the heat, while the maximum peaks at a warm 33°C, making it an ideal time for outdoor activities. However, this month also ushers in increased rainfall, with nearly 18 days of precipitation, which keeps the lush landscapes vibrant and alive. The high humidity, averaging 80%, adds a touch of tropical feel, setting September apart from the drier weeks of summer. For a deeper dive into the nuances of Kirishima's climate, explore Kirishima Climate.