Last updated: August 21, 2025
September in Kawasaki, Japan, unfolds with a spectrum of weather that showcases the transition into autumn. The maximum temperature can soar to a scorching 35°C (95°F), while the average settles around a comfortable 24°C (76°F). Nights bring a refreshing chill, dipping to a minimum of 12°C (54°F). This month is also marked by notable precipitation, with about 189 mm (7.4 in) of rain spread over 15 days, contributing to an impressive humidity level of 84%. As nature prepares for the seasonal shift, September is both a vibrant and dynamic time in Kawasaki.
As September rolls into Kawasaki, Japan, the city experiences a delightful transition marked by mild temperatures. With a minimum of 12°C (54°F) and an average of 24°C (76°F), the warmth begins to ease from the peak summer heat, which often soars past 35°C (95°F). This month serves as a bridge to autumn, as the maximum temperature cools significantly compared to August’s sweltering highs. With crisper air and comfortable conditions, September invites residents and visitors alike to enjoy outdoor activities amidst the vibrant changing leaves, highlighting a season of beauty and balance in this charming locale.
In September, Kawasaki experiences a noteworthy shift in precipitation, totaling 189 mm (7.4 in), accompanied by rainfall on 15 days of the month. This marks a notable decrease from the heavy downpours of July, which recorded a staggering 356 mm, while still remaining above the levels of the drier fall months that follow. The trend of increasing rainfall reaching its peak in the summer months gradually tapers off as autumn approaches. September’s weather, with its blend of lingering humidity and moderate precipitation, creates a unique transitional climate, paving the way for the cooler temperatures of October while still offering ample moisture for the lush Japanese landscape.
In September, Kawasaki experiences a notable drop in humidity to 84%, following the peak levels of 92% in July and 91% in August. This slight decrease signals the gradual transition into autumn, as the summer’s oppressive dampness begins to wane. Throughout the year, humidity levels in Kawasaki exhibit a clear trend of escalation from the cooler months of January and February, when averages linger around 75% to 71%, ramping up significantly as the city moves into late spring and summer. The consistent high levels from May through July create a lush backdrop, but as the autumn months approach, a gradual decline begins, with October and November hovering around 83% and 81% respectively. This sets the stage for a more comfortable climate, inviting residents and visitors alike to enjoy the rich hues of autumn.
In September, Kawasaki, Japan experiences a UV Index of 11, placing it in the extreme exposure category, which means you could be at risk of sunburn in just 10 minutes of unprotected sun exposure. This month marks a slight decline from the sweltering highs of July and August, where the UV Index reached a peak of 12. However, the intensity remains significant, urging residents and visitors alike to take caution and protect their skin when enjoying outdoor activities. As autumn approaches, it’s essential to stay vigilant about sun safety; even with the softer sunlight of fall, the potential for skin damage remains high. For more information on UV conditions in the area, visit Kawasaki UV Index.
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As September unfolds in Kawasaki, Japan, the city basks in the warm glow of 251 hours of sunshine, a delightful continuation of the summer's sunny embrace. Following August's peak of 301 hours, this month's sunlight marks a subtle transition towards autumn, though still robust compared to the cooler winter months ahead. The data reveals a general trend of increasing daylight from the beginning of the year, reaching a crescendo in late summer before tapering off. September’s sunshine is a gentle reminder of the lingering warmth, as residents enjoy the vibrant atmosphere of an early fall, while anticipating the shift to the softly muted hues of October.
September in Kawasaki, Japan, brings a 30% chance of sunny weather, reflecting a modest uptick from the summer months, where the likelihood of sunshine hovers around the 20-24% range. As the city transitions from the heat of summer to the milder days of autumn, September's sun probabilities remain moderate, making it one of the more unpredictable months. While not the sunniest time of the year, this month offers a brief respite before the higher likelihood of sunshine returns in October at 62%. So, if you're planning to visit, it's wise to prepare for both sunny spells and the possibility of cloudier days.
As summer transitions into fall, September in Kawasaki, Japan, heralds a change in daylight duration, offering about 12 hours of daylight. This marks a slight decrease from the 14 hours enjoyed in the peak of summer months, specifically July and June. The gradual tapering of daylight continues a trend observed throughout the year; after reaching its zenith in June and July, daylight hours begin to wane, paving the way toward the shorter days of autumn and winter. As September unfolds, residents and visitors alike can appreciate the balanced light that lingers in the sky, making it an ideal time for outdoor activities while the weather remains comfortably warm.
As September unfolds in Kawasaki, Japan, the average wind speed settles at a gentle 2.1 m/s (5 mph), mirroring the light breezes of the preceding summer months. This modest pace reflects a slight decline from the earlier summer highs, which tend to hover around 2.4 m/s (5 mph) in July and August. Interestingly, the transition into autumn reveals a consistent trend of diminishing winds, which continues into October, where speeds dip further to 1.9 m/s (4 mph). Overall, September marks a subtle shift away from the summer's warmth, as Kawasaki prepares to embrace the more tranquil winds of autumn, creating a serene backdrop for the changing seasons.
Weather in Kawasaki varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kawasaki, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather patterns. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 35°C (95°F), averaging around 24°C (76°F), with high humidity levels of 84%. This month is characterized by considerable precipitation, recording 189 mm (7.4 in) across 15 days. In stark contrast, January brings much colder conditions, with temperatures ranging from a low of -4°C (25°F) to a high of only 17°C (63°F), averaging just 6°C (42°F). Precipitation also decreases significantly to 53 mm (2.1 in) over 7 days, and humidity is lower at 75%. For a more detailed look at January weather, you can visit Kawasaki weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 35°C (95°F), with an average of 24°C (76°F). This month experiences high humidity at 84% and considerable rainfall, totaling 189 mm (7.4 in) over about 15 days. In contrast, February's climate is much cooler, with temperatures ranging from -5°C (24°F) to 22°C (72°F) and a much lower average of 7°C (44°F). Precipitation is also significantly reduced in February, averaging 75 mm (2.9 in) over just 9 days, with humidity at a more comfortable 71%. For more detailed information on February weather, you can visit Kawasaki weather in February.
The weather in September and March presents a stark contrast, reflecting the transition from summer to early spring. In September, temperatures range from a comfortable minimum of 12°C (54°F) to a scorching maximum of 35°C (95°F), with an average of 24°C (76°F), while March cools down significantly, featuring a minimum of -2°C (29°F) and an average of 11°C (52°F), reaching a maximum of 24°C (76°F). Additionally, September experiences higher precipitation at 189 mm (7.4 inches) over 15 days, accompanied by a higher humidity level of 84%, compared to March's 117 mm (4.6 inches) over just 11 days and a lower humidity of 71%. For an in-depth look at the weather specifics during March, you can check Kawasaki weather in March.
In comparing the weather of September and April, clear distinctions emerge. September brings warmer temperatures, with average highs reaching up to 35°C (95°F), while April's maximum temperature peaks at 28°C (82°F). The humidity in September is notably higher at 84%, compared to 78% in April, contributing to a more oppressive feel during the former month. Additionally, September experiences significantly more rainfall, accumulating 189 mm (7.4 in) over approximately 15 days, whereas April sees less precipitation at 112 mm (4.4 in) across 9 days. For a detailed look at April's climate, you can check Kawasaki weather in April.
September and May showcase distinct differences in weather patterns. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 35°C (95°F), with an average of 24°C (76°F). The month experiences considerable rainfall, totaling 189 mm (7.4 in) over 15 days, all while maintaining a high humidity level of 84%. In contrast, May features milder temperatures, with lows of 5°C (42°F) and highs reaching up to 32°C (89°F), averaging around 20°C (68°F). Rainfall is slightly less in May, totaling 162 mm (6.4 in) over 11 days, but humidity remains constant at 84%. For a detailed look at weather conditions during this month, check out Kawasaki weather in May.
When comparing the weather in September and June, we see some notable differences. September generally has a wider temperature range, with minimums around 12°C (54°F) and maximums reaching up to 35°C (95°F), while June tends to be slightly milder, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 32°C (90°F). Both months experience significant precipitation, but September records slightly less, with 189 mm (7.4 in) over 15 rainy days compared to June’s 200 mm (7.9 in) over 14 rainy days. Humidity levels are similar, with September at 84% and June slightly higher at 86%. For more specific details about the weather during this time, you can check out Kawasaki weather in June.
When comparing the weather between September and July, we can see notable differences in temperature and precipitation. In September, the temperatures range from a minimum of 12°C (54°F) to a maximum of 35°C (95°F), with an average of 24°C (76°F). Conversely, July is generally warmer, with minimum temperatures starting at 17°C (63°F) and peaking at 36°C (96°F), averaging around 27°C (80°F).
Precipitation levels also vary significantly; September experiences about 189 mm (7.4 in) of rain over 15 days, while July sees a much higher amount of rainfall at 356 mm (14.0 in) over 20 days. Humidity levels are high in both months, with September at 84% and July slightly higher at 92%. For more details on July weather specifics, check out Kawasaki weather in July.
In comparing the weather of September and August, we observe distinct differences in temperature and precipitation. September features a more moderate temperature range with a minimum of 12°C (54°F) and a maximum of 35°C (95°F), resulting in an average of 24°C (76°F). In contrast, August is noticeably warmer, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 38°C (100°F) and an average of 28°C (83°F). Rainfall also varies, with September receiving 189 mm (7.4 in) over 15 days, while August has higher precipitation at 269 mm (10.6 in) across 14 days. Humidity levels are higher in August at 91%, compared to September’s 84%. For further details, you can check out Kawasaki weather in August.
In September, the weather is generally warmer, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 35°C (95°F) and a high average of 24°C (76°F). This month also sees significant rainfall, with 189 mm (7.4 in) of precipitation spread over 15 days, making it a humid period with an average humidity of 84%.
In contrast, October brings cooler temperatures, with a minimum of 7°C (45°F), an average of 19°C (66°F), and a maximum of 31°C (89°F). Precipitation decreases to 115 mm (4.5 in) over just 9 days, and the humidity slightly drops to 83%. For those interested in a more detailed look at the October weather, you can check out Kawasaki weather in October.
September typically brings warmer temperatures compared to November, with an average high of 24°C (76°F) and maximums reaching up to 35°C (95°F), while November sees much cooler conditions, with an average high of 13°C (55°F) and maximums of 26°C (79°F). Precipitation is significantly higher in September, totaling 189 mm (7.4 in) over about 15 days, compared to November's 50 mm (1.9 in) across just 7 days. Humidity remains relatively consistent, with September being slightly more humid at 84% compared to November's 81%. For more specifics on November's climate, you can explore Kawasaki weather in November.
September and December present a stark contrast in weather conditions. In September, temperatures soar with a minimum of 12°C (54°F), an average of 24°C (76°F), and a maximum reaching 35°C (95°F). This month also experiences significant rainfall, with 189 mm (7.4 in) over 15 days, resulting in a high humidity level of 84%. In contrast, December brings much cooler temperatures, where the minimum dips to -2°C (28°F) and the average settles at a chilly 7°C (45°F), with a maximum of 22°C (72°F). Precipitation in December is markedly less, totaling 61 mm (2.4 in) over just 7 days, and humidity decreases slightly to 79%. For more detailed information, check out Kawasaki weather in December.
September in Kawasaki marks a transition from the summer heat, with temperatures that can peak at a scorching 35°C (95°F) but also dip to a refreshing 12°C (54°F). This month is characterized by higher humidity levels of 84% and about half the month witnessing rain, contributing to a total precipitation of 189 mm (7.4 in) over 15 days. Unlike the summer months, September introduces a more balanced climate, where warm afternoons can be followed by cooler evenings, making it a unique time for residents and visitors alike. To understand how this month compares to others in detail, visit the comprehensive report on Kawasaki Climate.