Last updated: August 21, 2025
Experience the vibrant weather of Konan, Japan in September, where temperatures can reach a maximum of 32°C (89°F), with an average of 25°C (77°F), making it a pleasantly warm month. Nighttime temperatures dip to a refreshing 16°C (61°F), perfect for evening strolls. However, prepare for consistent rainfall, as the month receives about 262 mm (10.3 in) of precipitation over 18 days, contributing to the region's lush landscapes. With humidity levels averaging around 85%, visitors will find the air notably moist, enhancing the overall experience of this beautiful season in Konan.
As September unfolds in Konan, Japan, temperatures begin to transition from the summer's intense heat to a more moderate warmth. With minimum temperatures around 16°C (61°F), the days still feel pleasantly warm, while the average temperature reaches a comfortable 25°C (77°F). This month typically enjoys a maximum temperature of 32°C (89°F), providing a lingering taste of summer. Compared to the stifling heat of July and August, where maximums soared to the low 30s Celsius, September offers a welcome relief, hinting at the approaching autumn. The gradual cooling trend marks a shift in seasons, making it an ideal time to experience the fading warmth before the crisp air of October arrives.
September in Konan, Japan, showcases a significant transition in its precipitation patterns, as the summer rains begin to taper off. With 262 mm (10.3 in) of rainfall occurring over 18 days, this month marks a decrease from the heavy downpours experienced in July and August. Despite this reduction, September still maintains a robust precipitation level, contributing to lush landscapes as autumn approaches. The decrease in rainy days hints at the gradual shift towards drier months ahead, notably October's 251 mm of rain over fewer days. As the year progresses, Konan's weather reflects a dynamic interplay between the lingering warmth of late summer and the crispness of early autumn, making September a pivotal month for both moisture and climate change.
September in Konan, Japan, typically sees a humidity level of 85%, a slight dip from the peak summer months. This month marks a transitional phase as the intense humidity of July and August begins to wane, yet it remains considerably high compared to the earlier months of the year. With early spring levels hovering around 70%, the progressive rise through late spring into summer showcases the region's characteristic muggy conditions. Following September, humidity generally decreases further into the autumn, stabilizing at 82% in October. This rhythmic fluctuation underscores Konan's subtropical climate, where the summer heat gives way to a more temperate feel, making September a month of both lingering warmth and gradual relief.
In September, Konan, Japan, experiences a UV Index of 10, marking a transition from the intense summer months but still categorized as very high. With a burn time of just 15 minutes, residents and visitors alike should remain vigilant about sun protection. This month follows a trend of extreme UV levels, particularly from April through August, where the index peaked at 12. As autumn approaches, the UV Index begins to decline, reflecting a broader seasonal shift that warrants an awareness of changing sun exposure. For those planning outdoor activities, it's essential to monitor the UV Index closely and take necessary precautions. For more detailed information on UV levels throughout the year, visit Konan UV Index.
UV Risk Categories
September in Konan, Japan, brings a warm embrace of 267 hours of sunshine, making it a delightful transition from the apex of summer. The month retains a generous amount of sunlight, though it marks a gentle dip from the high of 313 hours in August. This gradual decrease highlights a trend where the bright, sun-drenched days begin to soften as autumn approaches. Following this pattern, the sunlit hours continue to decrease into October, cascading towards winter with 257 hours. Overall, September serves as a bridge between the vibrant summer days and the more subdued sunshine of the upcoming months, inviting both locals and visitors to revel in the lingering warmth before the cooler seasons set in.
In Konan, Japan, September marks a transition as the summer heat begins to wane, bringing a 29% chance of sunny weather. While this is more favorable than the peak summer months of June through August, which hover around 20-25%, it still falls short of the sunnier months that follow. October and November enjoy a healthier 51% likelihood of sunshine, showcasing a clear upward trend as the autumn season progresses. Overall, September's mix of mild weather and moderate sun gives nature lovers a chance to enjoy the changing landscape, though those seeking consistent sunshine may want to keep their expectations in check.
As September rolls in, Konan, Japan experiences a subtle shift in daylight, offering approximately 12 hours of sunlight each day. This marks a gradual decline from the summer peak months of June and July, when the sky basked in a generous 14 hours of daylight. Following the vibrant energy of summer, September's daylight mirrors the transitional nature of the season, moving towards a cozy autumnal vibe. The daylight steadily decreases into October, dipping to 11 hours, suggesting that while the warm hues of summer fade, the beauty of shorter days brings forth a tranquil rhythm to daily life in Konan.
As September unfolds in Konan, Japan, the gentle caress of the wind signifies a shift towards the tranquil embrace of autumn. With an average wind speed of 2.5 m/s (6 mph), September brings a subtle decrease compared to the preceding months, reflecting a softening as summer's warmth begins to fade. This month stands out as part of a noticeable trend where wind speeds tend to dip during the late summer and early fall. The breezy whispers of September act as a soothing backdrop, encouraging both reflection and anticipation for the vivid foliage and crisp air that October promises. Overall, the wind's gentle rhythm provides a serene transition, inviting residents and visitors alike to savor the scenic beauty of this season.
Weather in Konan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Konan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is warm and humid, with temperatures ranging from a comfortable 16°C (61°F) at night to a peak of 32°C (89°F) during the day, along with significant rainfall of 262 mm (10.3 in) spread over 18 days. In contrast, January experiences much colder temperatures, with lows dropping to -1°C (30°F) and daytime highs averaging just 18°C (65°F). Rainfall is substantially lower in January, totaling only 54 mm (2.1 in) over just 4 days, and the humidity is also reduced to 74%. For a closer look at January weather specifics, you can explore the details here: Konan weather in January.
September and February present a stark contrast in weather patterns. In September, temperatures can reach a balmy maximum of 32°C (89°F) with an average of 25°C (77°F), while humidity is high at 85%. However, this month also brings significant rainfall, totaling 262 mm (10.3 in) over 18 days. In contrast, February features much cooler temperatures, with a maximum reaching only 20°C (68°F) and an average of 8°C (47°F); this includes chilly nights with temperatures dropping to a minimum of -1°C (31°F). Precipitation during February is considerably lower at 86 mm (3.4 in) over just 7 days, and humidity is more moderate at 70%. For more detailed information, you can visit Konan weather in February.
September weather is characterized by warm temperatures, with a minimum of 16°C (61°F) and an average of 25°C (77°F), reaching highs of 32°C (89°F). However, it also brings significant rainfall, with 262 mm (10.3 in) of precipitation over 18 days, contributing to a high humidity level of 85%. In contrast, March experiences much cooler temperatures, ranging from a minimum of 3°C (37°F) to a maximum of 22°C (72°F) and an average of 12°C (54°F). Precipitation is lower at 147 mm (5.8 in) over 11 days, and humidity is also less oppressive at 70%. For more detailed insights into March weather in this region, you can visit Konan weather in March.
When comparing the weather of September and April, notable differences emerge in both temperature and precipitation. September typically boasts a warmer climate, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 32°C (89°F), while April experiences cooler temperatures, ranging from a minimum of 4°C (39°F) to a maximum of 24°C (76°F). Additionally, September is characterized by higher humidity levels at 85% and substantial rainfall, averaging 262 mm (10.3 in) over 18 days, compared to April's milder humidity of 76% and significantly lower precipitation of 170 mm (6.7 in) over just 9 days. For a more detailed look at April weather, you can visit Konan weather in April.
In September, the weather is generally warmer, with average temperatures reaching 25°C (77°F), peaking at a maximum of 32°C (89°F) compared to May's average of 19°C (67°F) and maximum of 26°C (80°F). Additionally, September experiences significantly more rainfall, with 262 mm (10.3 in) over 18 days, while May sees less precipitation at 206 mm (8.1 in) across only 10 days. Humidity levels are slightly higher in September, averaging 85%, compared to May's 82%. For more detailed information on the weather in May, you can check out Konan weather in May.
In comparing the weather of September and June, both months experience similar minimum temperatures, around 16°C (61°F). However, September typically sees warmer average temperatures at 25°C (77°F), compared to June's cooler average of 22°C (73°F). While September reaches a maximum of 32°C (89°F), June peaks at 28°C (84°F). Precipitation is quite pronounced in both months, with September receiving 262 mm (10.3 in) over 18 days, slightly less than June's 286 mm (11.3 in) over 15 days. Humidity levels are also quite close, at 85% for September and 86% for June, resulting in a consistently muggy atmosphere. For more details, you can visit Konan weather in June.
In comparing the weather between July and September, July tends to be slightly warmer, with average temperatures ranging from a minimum of 21°C (71°F) to a maximum of 33°C (92°F). In contrast, September experiences cooler temperatures, ranging from a minimum of 16°C (61°F) to a maximum of 32°C (89°F). July also sees significantly higher precipitation, with 523 mm (20.6 in) falling over 22 days, compared to September's 262 mm (10.3 in) across 18 days. Humidity is higher in July at 91%, while September's humidity is slightly lower at 85%. For a more detailed look at July's weather, check out Konan weather in July.
September's weather is characterized by slightly cooler temperatures compared to August, with minimums dropping from 22°C (71°F) in August to 16°C (61°F). The average temperature in September is 25°C (77°F), while August maintains a warmer average of 27°C (82°F). Additionally, September experiences less extreme maximum temperatures, peaking at 32°C (89°F) compared to August's higher maximum of 34°C (94°F). Precipitation levels are also slightly reduced in September at 262 mm (10.3 in) over 18 days, compared to August's 298 mm (11.7 in) which occurs over 19 days. Humidity remains high in both months, with September at 85% and August at 88%. For more detailed insights into the weather conditions, visit Konan weather in August.
In September, the weather is typically warmer, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 32°C (89°F) and an average of 25°C (77°F). The month is also characterized by high humidity at 85% and significant rainfall, accumulating 262 mm (10.3 in) over 18 days. In contrast, October sees a noticeable drop in temperatures, with a minimum of 11°C (52°F), an average of 20°C (69°F), and a maximum of 29°C (85°F). Precipitation in October is slightly lower at 251 mm (9.9 in), spread over 12 days, and humidity decreases to 82%. For more details on the weather in October, check out Konan weather in October.
September and November present stark contrasts in weather conditions. September boasts warmer temperatures, with a minimum of 16°C (61°F) and an average high of 32°C (89°F), making it feel quite humid at 85%. However, this month is also marked by significant rainfall, receiving 262 mm (10.3 in) over 18 days. In sharp contrast, November sees a noticeable drop in temperature, featuring a minimum of 5°C (42°F) and an average of 15°C (59°F), with a maximum that reaches 24°C (75°F). Additionally, November experiences much lighter precipitation, totaling only 63 mm (2.5 in) over just 6 days, and a slightly lower humidity of 79%. For more detailed insights on November's weather, you can check Konan weather in November.
September and December present stark contrasts in weather. In September, temperatures range from a mild 16°C (61°F) at night to a warm 32°C (89°F) during the day, with high humidity at 85%. This month is also noteworthy for significant rainfall, totaling 262 mm (10.3 in) over 18 days. In contrast, December sees much cooler temperatures, with a minimum of 2°C (36°F), an average of 10°C (50°F), and a maximum of 21°C (70°F). Precipitation decreases considerably to 67 mm (2.7 in) over just 6 days, and humidity drops to 77%. For more detailed information on December weather, you can visit Konan weather in December.
As September rolls in, Konan experiences a unique shift in weather compared to the sweltering summer months. The temperatures remain warm, hovering around a pleasant average of 25°C, but the welcoming coolness of the autumn season begins to creep in with minimums dipping to 16°C. This month is characterized by significantly increased humidity levels at 85%, and while moments of sun shine through, September brings a notable rise in precipitation, delivering about 262 mm over 18 days. This blend of warmth and moisture not only refreshes the landscape but also sets the stage for a vibrant fall transition. For a more detailed overview of what to expect, check out Konan Climate.