Last updated: August 21, 2025
In September, Ibusuki, Japan, showcases a warm and humid climate, with maximum temperatures reaching up to 32°C (89°F) and an average of 26°C (79°F), making it an inviting destination for those who enjoy mild heat. Evenings cool down to a pleasant minimum of 19°C (66°F), providing comfortable respite from daytime warmth. However, prepare for rain, as the region experiences significant precipitation of 265 mm (10.5 in) over approximately 19 days, contributing to the lush scenery for which Ibusuki is renowned. With humidity levels hovering around 80%, visitors can expect a tropical atmosphere that enhances the vibrant local flora and natural beauty of this enchanting area.
As September arrives in Ibusuki, Japan, the summer heat begins its gentle fade, yet the temperatures remain pleasantly warm. With minimums averaging around 19°C (66°F) and daytime highs reaching up to 32°C (89°F), the month signifies a transition, offering a comfortable climate for outdoor adventures. The average temperature of 26°C (79°F) reflects a balance between the warmth of summer and the cooler embrace of autumn, inviting visitors to explore the region's scenic beauty. As the humidity starts to dip, September often serves as a tranquil interlude before the more temperate months of October and November draw near, emphasizing the beauty of seasonal change in this delightful coastal town.
In September, Ibusuki, Japan, experiences a significant uptick in precipitation, with a total of 265 mm (10.5 in) falling over 19 days. This marks a continuation of the wet season that begins in June and peaks through the summer months. The rainfall in September is less than the deluge witnessed in June and July, yet it remains robust, signaling the transition toward autumn. Falling just short of the peak summer months, September maintains a high frequency of rainy days akin to August, contributing to the lush landscapes that define this coastal region. As the month progresses, the shifting weather sets the stage for the drier autumn months ahead.
In Ibusuki, Japan, September marks a transitional point in humidity levels, dropping to 80% after a peak in the summer months. Following the sweltering heat of July and August, where humidity reached a muggy 90% and 85%, the air begins to feel a bit less oppressive. This slight decrease signals the gradual shift towards autumn, yet the lingering warmth keeps the atmosphere notably humid. Overall, September's humidity is relatively high compared to the cooler months ahead, highlighting the region’s characteristic tropical climate that peaks during summer but retains a significant moisture level as the seasons change.
September in Ibusuki, Japan, showcases a UV Index of 11, reflecting an extreme exposure category with a burn time of just 10 minutes. This drop from the peak of 13 seen in August marks a slight decrease, yet caution is still recommended as summer transitions into autumn. Over the months, the UV Index has remained consistently high, particularly from April through August, where it reached levels deemed extreme. As the seasons change, residents and visitors alike should stay vigilant and practice sun safety. For detailed insights, visit the Ibusuki UV Index, ensuring you are well-prepared for outdoor activities.
UV Risk Categories
In September, Ibusuki enjoys a vibrant 276 hours of sunshine, concluding the summer season with a warm farewell. The trend showcases a remarkable rise from the chilly 189 hours in January to the sun-drenched 315 hours in August, making September a delightful transitional month. With sunshine hours tapering off as autumn approaches, September bridges the gap between the peak warmth of summer and the cooler embrace of fall, emphasizing Ibusuki's charm in varying seasons. This time of year highlights the region’s consistent ability to offer abundant sunlight, inviting locals and visitors alike to bask in the gentle rays before the shorter days of autumn take hold.
In Ibusuki, Japan, September offers a promising 42% chance of sunny weather, which signifies a gentle uptick as summer transitions into autumn. This marks a welcome improvement compared to the notably dreary months of June (17%) and July (21%), where clouds often dominate the sky. While the likelihood of sunshine in September is still lower than the brighter autumn months of October (57%) and December (57%), it suggests that nature is beginning to awaken again, providing a lovely backdrop for outdoor activities. If you're planning a visit during this month, you're likely to experience milder weather with occasional sun peeking through, making it an ideal time to explore the region's stunning scenery and natural hot springs.
In Ibusuki, Japan, the rhythm of daylight duration shifts gracefully throughout the year, reflecting the changing seasons. As summer peaks in June with a generous 14 hours of sunlight, the days gradually shorten with the approach of autumn. By September, daylight slips to 12 hours, marking a delicate transition. This trend shows a gentle retreat after the sun-drenched months of July and August, which both boast 13 hours of light. Following September, daylight continues to wane, leading into the shorter days of October and November, where 11 hours and 10 hours respectively dominate. This rhythmic ebb and flow of daylight not only characterizes the natural beauty of Ibusuki but also invites residents and visitors alike to savor the vibrant tapestry of seasonal changes.
In Ibusuki, Japan, September ushers in a gentle reprieve from the summer heat, with an average wind speed of 3.4 m/s (8 mph). This marks a slight decrease from the robust breezes of late summer, where wind speeds reached around 4.0 m/s in August. The transition to autumn is apparent as the winds become softer, reminiscent of the calming changes in nature during this time. Interestingly, this trend of fluctuating wind speeds is characteristic throughout the year, with January and March also experiencing similar calm periods. As autumn settles in, the winds whisper a promise of cooler days ahead, inviting residents and visitors alike to embrace the tranquil charm of Ibusuki.
Weather in Ibusuki varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ibusuki, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures range from a mild 19°C (66°F) to a warm 32°C (89°F), with an average of 26°C (79°F) and substantial rainfall of 265 mm (10.5 in) over 19 days, resulting in high humidity levels at 80%. In comparison, January experiences much colder temperatures, with a minimum of -1°C (31°F) and a maximum of 21°C (70°F), averaging just 10°C (50°F). The winter month sees significantly less precipitation at 57 mm (2.3 in) over only 6 days and a lower humidity of 72%. For a closer look at weather specifics in January, visit Ibusuki weather in January.
September and February showcase remarkably contrasting weather patterns. September boasts warmer temperatures, with a minimum of 19°C (66°F) and an average of 26°C (79°F), reaching up to 32°C (89°F), while February's temperatures are much cooler, ranging from a minimum of 1°C (33°F) to a maximum of 21°C (71°F), with an average of just 10°C (51°F). Additionally, September experiences significant rainfall, with 265 mm (10.5 in) spread over 19 days, compared to February's relatively drier conditions, receiving only 110 mm (4.3 in) over 10 days. Humidity levels also differ, with September at a higher 80% versus February's 68%. For more details on February weather, you can check out Ibusuki weather in February.
September and March present contrasting weather profiles, highlighting seasonal shifts. In September, the temperatures range from a mild minimum of 19°C (66°F) to a warm maximum of 32°C (89°F), with an average of 26°C (79°F). This month experiences considerable precipitation, totaling 265 mm (10.5 in) over 19 days, alongside high humidity at 80%. In contrast, March sees cooler temperatures, with a minimum of 3°C (39°F) and a maximum of 23°C (74°F), averaging 14°C (57°F). Precipitation in March is lower at 188 mm (7.4 in) across 13 days, and humidity is also reduced at 72%. To explore more about March weather in this area, visit Ibusuki weather in March.
September and April present distinct weather patterns, showcasing the transition from summer to autumn and from winter to spring, respectively. September boasts higher temperatures, with an average of 26°C (79°F) and a maximum reaching 32°C (89°F), while April's averages are more moderate, peaking at 26°C (79°F) and typically starting at a cool minimum of 7°C (45°F). In terms of precipitation, September is significantly wetter, receiving 265 mm (10.5 in) over 19 days, compared to April's 148 mm (5.8 in) spread over just 9 days. Humidity remains relatively consistent, with September at 80% and April slightly lower at 79%. For a deeper understanding of weather conditions during this spring month, check out Ibusuki weather in April.
When comparing the weather in September and May, significant differences emerge in both temperature and precipitation patterns. September boasts warmer temperatures, with a minimum of 19°C (66°F) and average highs reaching 32°C (89°F), while May offers cooler conditions, with minimal temperatures around 10°C (50°F) and an average high of 28°C (83°F). Precipitation is notably similar, with September recording 265 mm (10.5 in) over 19 days and May slightly lower at 262 mm (10.3 in) across 12 days. Humidity levels are fairly comparable, with September at 80% and May slightly higher at 83%. For more detailed insights, check out Ibusuki weather in May.
In comparing the weather of September and June, it becomes evident that both months share similar humidity levels and the number of rainy days but differ significantly in temperature and precipitation. September experiences a warmer average temperature, with a minimum of 19°C (66°F) and a maximum of 32°C (89°F), compared to June's cooler range of 17°C (62°F) to 30°C (86°F). However, June receives considerably more rainfall, with 455 mm (17.9 in) compared to September's 265 mm (10.5 in). For more detailed insights into June weather, you can refer to Ibusuki weather in June.
In comparing the weather between September and July, July tends to be slightly warmer, with average temperatures reaching 27°C (81°F) compared to September's 26°C (79°F). However, September sees a slightly higher maximum temperature of 32°C (89°F) versus July's peak of 33°C (91°F). Precipitation levels are notably different as well, with July experiencing 391 mm (15.4 in) of rain over 23 days, while September records 265 mm (10.5 in) across 19 days. This difference in rainfall suggests that July is not only wetter but also more humid, with humidity levels at 90% compared to September's 80%. For more detailed insights, you can check Ibusuki weather in July.
In comparing the weather between August and September, September tends to be slightly cooler, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 32°C (89°F), in contrast to August's warmer range of 24°C (75°F) to 34°C (93°F). Additionally, September experiences more rainfall, with 265 mm (10.5 in) over 19 days, compared to August's 217 mm (8.6 in) over 17 days. Humidity levels are also high in both months, with September at 80% and August at 85%. For a detailed look at August weather, you can check Ibusuki weather in August.
In September, the weather is notably warmer, with minimum temperatures around 19°C (66°F) and maximums reaching up to 32°C (89°F). The month experiences significant rainfall, totaling 265 mm (10.5 in), spread over 19 days, contributing to high humidity levels of around 80%. In contrast, October brings a cooler climate, with minimum temperatures dropping to 13°C (55°F) and an average of 22°C (72°F). Rainfall decreases significantly to 148 mm (5.8 in) over just 11 days, and humidity levels remain relatively stable at 78%. For a detailed overview of October weather, you can explore Ibusuki weather in October.
September and November present quite a contrast in weather conditions. In September, temperatures range from a minimum of 19°C (66°F) to a maximum of 32°C (89°F), with an average of 26°C (79°F). This month is notably humid at 80% and sees substantial precipitation, with 265 mm (10.5 in) over 19 days. In contrast, November experiences cooler temperatures, with a minimum of 6°C (44°F), an average of 17°C (62°F), and a maximum of 26°C (80°F). The humidity drops slightly to 76%, and precipitation reduces significantly to 108 mm (4.3 in) over just 9 days. For detailed weather information specific to November, check Ibusuki weather in November.
September and December exhibit starkly contrasting weather patterns. In September, temperatures are quite warm, ranging from a minimum of 19°C (66°F) to a maximum of 32°C (89°F), with an average of 26°C (79°F). However, this month is quite wet, experiencing a significant 265 mm (10.5 in) of precipitation over 19 days, and high humidity at 80%. In contrast, December brings a much cooler climate, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 24°C (75°F) and an average of 12°C (53°F). Rainfall is considerably reduced to 92 mm (3.6 in) over just 8 days, along with lower humidity at 74%. For more detailed insight, check out Ibusuki weather in December.
As September unfolds in Ibusuki, the weather begins to shift noticeably, offering a unique blend of warmth and humidity. While temperatures remain pleasant, with averages hovering around 26°C, the increase in precipitation—with rain gracing the area on nearly two-thirds of the days—ushers in the transition from summer's heat into the softer embrace of autumn. This month boasts a higher humidity level, creating a lush atmosphere ideal for exploration of the region's famed hot springs. For a deeper understanding of the seasonal variations that contribute to this charming climate, visit Ibusuki Climate.