Last updated: August 21, 2025
September in Kochi, Japan brings a delightful mix of weather, characterized by an average temperature of 24°C (76°F), peaking at a maximum of 29°C (84°F) and dipping to a minimum of 18°C (65°F). This month also sees a significant amount of precipitation, totaling 254 mm (10.0 in) over 19 days, making it one of the wetter months of the year. With humidity levels averaging a high 86%, visitors can expect a warm and often humid atmosphere, perfect for experiencing the lush landscapes and vibrant culture that Kochi has to offer.
In September, Kochi, Japan, experiences a delightful shift as summer begins to wane. The temperatures range from a comfortable 18°C (65°F) at night to a warm 29°C (84°F) during the day, resulting in an average of 24°C (76°F). This moderate warmth marks a transition from the high heat of August, where temperatures consistently hovered around 30°C (87°F). With the humid summer months behind, September offers a more pleasant climate for outdoor exploration, making it an ideal time to appreciate Kochi's stunning natural scenery and vibrant culture. As autumn approaches, the evenings become cooler, creating a refreshing atmosphere perfect for enjoying local festivals and cuisine.
In September, Kochi experiences a significant shift in its climate as the region prepares for the autumn months. With an impressive 254 mm (10.0 in) of precipitation spread across 19 days, it marks one of the wetter months of the year, emphasizing the ongoing influence of the monsoon season. Following a slightly drier August, where rainfall dropped to 183 mm, September's substantial downpour reflects the peak of the annual rainy season, characterized by frequent showers and increased humidity. This trend highlights Kochi's reputation for its lush landscapes, nourished by consistent rain, and sets the stage for the drier months ahead, particularly as October approaches with even higher precipitation at 305 mm (12.0 in), albeit over fewer days. As the year transitions, September stands out for its vibrant and dynamic weather, painting a vivid picture of Kochi's climatic patterns.
As summer fades, September in Kochi, Japan, experiences a notable drop in humidity, settling at 86%. This reduction is a welcome shift from the sweltering July and August, which peak at 93% and 90% respectively. Interestingly, the trend shows a gradual rise in humidity from the cooler months, starting at 76% in January and reaching its zenith in the summer. Following this peak, September marks the beginning of a subtle decline as the city prepares for autumn, moving towards 83% in October. This seasonal cycle not only highlights Kochi's lush natural beauty but also offers a refreshing reprieve as the oppressive summer humidity begins to recede.
In September, Kochi experiences a notable UV Index of 10, marking it as a time when sun exposure is categorized as very high and the recommended burn time is 15 minutes. This slight decrease from August's extreme levels highlights a gradual shift as the summer months transition into fall. Throughout the year, Kochi's UV Index shows significant fluctuations, peaking in July at 12—reflecting the intensity of summer—and gradually tapering down as cooler months approach. Such trends emphasize the importance of being sun-smart, especially in these high-exposure months. For detailed insights into UV levels throughout the year, check out Kochi UV Index.
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As September arrives in Kochi, Japan, the warmth of summer still lingers with an impressive 254 hours of sunshine. This month continues the sun-soaked trend established in the bustling months of July and August, which boasted 266 and a remarkable 311 hours of bright skies, respectively. After the peaks of summer, September serves as a gentle transition, offering a still-abundant supply of sunlight while significantly decreasing from the summer highs. This gradual shift continues into the fall, setting the stage for the 213 hours expected in October. Embracing the radiant days of September, residents and visitors alike can enjoy the late summer warmth before the cooler months descend upon this beautiful coastal city.
As September arrives in Kochi, Japan, the likelihood of enjoying sunny weather starts to dip, with only a 34% chance of clear skies. This marks a noticeable decline from the sunnier months of early summer, such as July and August, where the sun shines through 37% of the time. Interestingly, the golden sands of the preceding months seem elusive as the rainy season casts a shadow over early autumn. However, the forecast begins to brighten with October's 48% chance and November's 60%, hinting that while September may not bask in sunshine, the months that follow promise a return to clearer days.
As summer fades into autumn, September in Kochi, Japan, brings a gentle reduction in daylight, with around 12 hours of sunlight to illuminate the days. This transition follows a peak in June and July, where the city enjoys an impressive 14 hours of brightness. As the year progresses, daylight hours begin to taper off, shifting from the longer days of May and June, which boast 13 to 14 hours. In September, the balance between light and dark sets the stage for the cooler months ahead, signifying a seasonal shift that invites a cozy embrace of fall activities and reflections on nature’s rhythms. As October approaches, daylight continues its decline, hinting at the shorter days of winter.
As September unfolds in Kochi, Japan, winds begin to pick up, averaging 6.4 m/s (14 mph), providing a refreshing transition from the sultry summer months. This subtle increase from August's 6.0 m/s suggests the onset of autumn, where cooler breezes herald the changing seasons. Following a trend of fluctuating wind speeds throughout the year, September marks a pivotal shift; it rises from the summer lull and sets the stage for stronger gusts in the coming months, particularly November, when winds reach 6.9 m/s (15 mph). As the year progresses, Kochi's winds fluctuate, but September stands out as a gentle reminder of nature's rhythms, ushering in a new chapter of cooler days ahead.
Weather in Kochi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kochi, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures in Kochi range from a minimum of 18°C (65°F) to a maximum of 29°C (84°F), with an average of 24°C (76°F). The month is characterized by high humidity at 86% and significant rainfall, totaling 254 mm (10.0 in) across 19 days. In contrast, January presents a much cooler climate, featuring temperatures that range from a chilly 1°C (34°F) to a comfortable 17°C (63°F), with an average of just 9°C (48°F). Precipitation in January is far less, at 78 mm (3.1 in) over 7 days, and humidity lowers to 76%. For a detailed look at the weather in January, visit Kochi weather in January.
September and February present stark contrasts in weather. In September, the temperatures are significantly warmer, with averages around 24°C (76°F) and highs reaching up to 29°C (84°F), while February offers a much cooler experience, with average temperatures barely reaching 9°C (48°F) and highs of 18°C (65°F). Additionally, September is marked by considerable rainfall, receiving about 254 mm (10.0 in) over 19 days, compared to February's relatively dry climate with only 90 mm (3.5 in) over 8 days. Humidity levels also differ, with September being more humid at 86%, in contrast to February's lower humidity of 74%. For a more detailed look at February's weather in Kochi, you can visit Kochi weather in February.
In September, the weather is significantly warmer and more humid compared to March. With average temperatures ranging from 18°C (65°F) to a high of 29°C (84°F), September feels quite tropical, accompanied by high humidity at 86% and substantial rainfall of 254 mm (10.0 in) over 19 days. In contrast, March experiences cooler temperatures, with averages between 5°C (41°F) and a maximum of 18°C (65°F), alongside a lower overall humidity of 70%. Rainfall is also less intense in March, totaling 203 mm (8.0 in) across 14 days. For more details on March weather, you can check Kochi weather in March.
September and April present a striking contrast in weather conditions. September boasts warmer temperatures, with minimums around 18°C (65°F) and highs reaching up to 29°C (84°F), while April's temperatures are cooler, ranging from a minimum of 6°C (44°F) to a maximum of 21°C (70°F). Additionally, September is characterized by significantly more rainfall, with 254 mm (10.0 in) over 19 days compared to April's 175 mm (6.9 in) over just 10 days. Humidity levels are also higher in September at 86%, compared to 74% in April, contributing to a distinctly more humid atmosphere. For a closer look at April's climate specifics, check out Kochi weather in April.
In comparing the weather of September and May, September tends to be warmer and more humid, with average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 29°C (84°F) and an average of 24°C (76°F). In contrast, May features cooler temperatures, with a range from a minimum of 13°C (55°F) to a maximum of 23°C (74°F), averaging at 18°C (65°F). Additionally, September experiences higher precipitation, accumulating 254 mm (10.0 in) over 19 rainy days, compared to May’s 222 mm (8.7 in) over just 11 days. The humidity in September averages around 86%, slightly higher than May’s 81%. For more details on the specific weather conditions in May, you can check this link: Kochi weather in May.
September and June present distinct weather patterns, although both months experience moderate temperatures. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 29°C (84°F), with an average of 24°C (76°F). This month also sees significant rainfall, with 254 mm (10.0 in) of precipitation over 19 days and a humidity level of 86%. In contrast, June is slightly cooler, with temperatures ranging from 17°C (62°F) to 25°C (78°F) and an average of 21°C (70°F). Additionally, June experiences even higher rainfall, totaling 300 mm (11.8 in) over 15 days and a humidity of 88%. For a more detailed overview, you can check Kochi weather in June. Overall, while both months are humid and rainy, September tends to be warmer than June.
When comparing the weather in September and July, September experiences slightly cooler temperatures, with minimums of 18°C (65°F) compared to July's minimum of 20°C (68°F). The average temperatures remain similar, with September averaging 24°C (76°F) and July at 25°C (77°F), while maximum temperatures peak at 29°C (84°F) in September and 30°C (87°F) in July. Precipitation is notably higher in July, with a total of 360 mm (14.2 in) over 18 days, compared to September's 254 mm (10.0 in) spread over 19 days. Additionally, September tends to be less humid, averaging 86% humidity, while July's humidity reaches 93%. For a detailed look at July weather patterns, you can visit Kochi weather in July.
In comparing the weather of September to August, September presents slightly cooler temperatures, with a minimum of 18°C and an average of 24°C, compared to August's warmer minimum of 22°C and average of 26°C. While both months experience high humidity levels, September's average humidity stands at 86%, which is marginally lower than August’s 90%. Additionally, September sees more rainfall, totaling 254 mm over 19 days, in contrast to August's 183 mm over 15 days. For a detailed look at August weather, you can visit Kochi weather in August.
In September, the weather is generally warmer with average temperatures ranging from 18°C (65°F) to a maximum of 29°C (84°F), while October sees a slight drop in temperature, with averages between 14°C (57°F) and a maximum of 26°C (79°F). Rainfall is more frequent in October, accumulating to 305 mm (12.0 in) over 16 rainy days compared to September's 254 mm (10.0 in) over 19 days. Despite the increased rainfall in October, the humidity remains relatively high, though slightly lower at 83% compared to September's 86%. For more details on the weather in October in Kochi, you can check the link: Kochi weather in October.
In September, the weather is considerably warmer, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 29°C (84°F), and an average of 24°C (76°F). This month also sees high humidity at 86% and significant rainfall, totaling 254 mm (10.0 in) over 19 days. In contrast, November experiences cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 22°C (72°F), averaging around 16°C (61°F). Precipitation decreases to 144 mm (5.7 in) over 12 days, and humidity remains relatively lower at 80%. For more detailed information about November's weather, you can visit Kochi weather in November.
September and December present quite contrasting weather conditions. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 29°C (84°F), with an average of 24°C (76°F). This month also experiences significant rainfall, with 254 mm (10.0 in) of precipitation over 19 days, and a high humidity level of 86%.
In stark contrast, December sees much cooler temperatures, with a minimum of 3°C (38°F), an average of 11°C (53°F), and a maximum of 21°C (69°F). Precipitation drops significantly to 88 mm (3.5 in) over just 10 days, and humidity is reduced to 78%. For more insights into winter conditions, visit Kochi weather in December.
September in Kochi is characterized by embracing warmth and increased humidity, setting it apart from the milder summer months. With temperatures hovering around a pleasant average of 24°C, this time of year brings a refreshing yet humid atmosphere, often enhanced by significant rainfall. The 254 mm of precipitation recorded over nearly two-thirds of the month creates a lush, verdant landscape, while the humidity levels can feel quite intense. As the summer heat gradually dissipates, September offers a unique blend of warmth and moisture that is distinct from the drier months that precede it. For more insight into the overall climate patterns, visit Kochi Climate.