Last updated: August 21, 2025
September in Fukuoka, Japan brings a delightful mix of warmth and humidity, with average temperatures hovering around 24°C (76°F). The month can peak at a sizzling 35°C (96°F), making it crucial to stay hydrated. Visitors can expect occasional rainfall, accumulating to 206 mm (8.1 in) over approximately 15 days, contributing to a high humidity level of 84%. This blend of conditions creates a vibrant and lush environment, perfect for enjoying the city's beautiful landscapes and cultural experiences.
As summer transitions into autumn, Fukuoka, Japan, experiences a noticeable shift in temperatures during September. The month welcomes cooler mornings with a minimum of 13°C (56°F), while the afternoons still radiate warmth, reaching a maximum of 35°C (96°F). The average temperature stabilizes around 24°C (76°F), reflecting a comforting balance between the lingering heat of summer and the refreshing breezes of fall. This trend marks a gradual decline from the intense highs of August, which frequently approached 37°C (100°F). With the promise of milder weather, September in Fukuoka offers a perfect backdrop for outdoor activities and festivals, inviting both locals and travelers to enjoy the vibrant atmosphere before the cooler months set in.
September in Fukuoka marks a notable shift in precipitation patterns, as the city receives 206 mm (8.1 in) of rain over 15 days. This amount reflects a slight decrease from the summer months, where July and August peak dramatically, delivering 367 mm (14.4 in) and 303 mm (11.9 in), respectively. However, September's rainfall is significant enough to maintain the essence of the summer monsoon, transitioning into a more temperate autumn climate. The frequency of rainy days, consistent with the warmer months, showcases the lingering effects of humidity. As the season progresses, precipitation starts to dwindle, setting the stage for the drier months ahead, with October seeing a sharp drop to 113 mm (4.5 in). This trend indicates that while September retains summer's wet touch, it is also the harbinger of the evolving weather patterns that Hawaii experiences as it heads into fall.
In September, Fukuoka experiences a notable decline in humidity, dropping to 84% from the peak levels of summer, where July and August soar at 92% and 91% respectively. This transitional month marks a shift from the oppressive humidity of summer, with conditions becoming more comfortable as the city edges toward autumn. Throughout the year, humidity tends to fluctuate significantly, peaking in the summer months and gradually easing into the cooler seasons. The drop in September is part of a downward trend that continues into October, suggesting a welcome relief as residents prepare for the milder weather ahead.
In September, Fukuoka, Japan, maintains an extreme UV Index of 11, similar to the summer months preceding it. With a burn time of just 10 minutes, it’s crucial for residents and visitors alike to take precautions against harmful sun exposure. This trend reflects a peak in UV intensity that starts in April and continues into early autumn, showcasing the importance of vigilant sun safety as the year transitions. As the UV Index begins to decline in October, it shifts to a high category of 7, providing a brief respite before winter approaches. For more detailed information on UV levels and safety measures, visit Fukuoka UV Index.
UV Risk Categories
As summer transitions into autumn, September in Fukuoka embraces a warm glow, boasting 256 hours of sunshine. This month sits just below the sunlit peaks of August, which shines brightly with 304 hours, and reflects the lingering warmth that summer leaves behind. Following a trend of gradually increasing daylight hours from January's 179 to May's 292, September shows a slight decline, yet maintains a healthy balance of sunshine compared to the earlier months of the year. As October approaches, the hours dip slightly to 253, hinting at the shortening days, but September’s golden rays remind us of the vibrant summer lingering just out of reach.
In Fukuoka, Japan, September experiences a 30% chance of sunny weather, positioning it in the middle of the yearly spectrum. While this percentage is modest, it reflects a gradual shift towards clearer skies as the region transitions from the sweltering heat of summer, where July and August see the lowest sun chances, to the more favorable conditions of autumn. This month typically marks the end of the rainy season, paving the way for a more inviting climate, as indicated by the dramatic increase to 60% in October. Thus, September stands at a crossroads, embodying a blend of lingering summer humidity and the promise of sunny days ahead.
As summer transitions into autumn, September in Fukuoka sees a gentle decline in daylight hours, offering 12 hours of sunlight each day. This marks a noticeable shift from the sun-drenched months of June and July, which boast 14 hours, and mirrors the steady decrease that begins in the vibrant spring. Following the long days of summer, September brings a balanced mix of light and shadow, ushering in the cooler, colorful days of fall while wrapping up the longer daylight hours of the year. As daylight wanes, the rhythm of nature begins to shift, inviting residents and visitors alike to savor the tranquil beauty of this transitional month.
As September unfolds in Fukuoka, Japan, the winds begin to whisper a gentle reminder of summer's ebb. With an average wind speed of 2.2 m/s (5 mph), this month maintains a relatively calm atmosphere, mirroring the preceding August. Interestingly, the wind speeds have generally declined since the breezier early months of the year, where January to May enjoyed slightly stronger gusts averaging around 2.6 to 3.1 m/s (6 to 7 mph). The shift to milder autumn breezes, with June dipping to its lowest at 1.6 m/s (4 mph) and temperatures gradually cooling, sets the stage for a serene transition. As September transitions to October, this consistent wind pattern invites a tranquil yet refreshing experience for those strolling through Fukuoka’s vibrant streets, blending the lingering warmth of summer with the subtle hints of fall.
Weather in Fukuoka varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Fukuoka, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present striking contrasts in weather patterns. In September, the climate is warm and humid, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 35°C (96°F) and an average of 24°C (76°F). This month also sees significant rainfall, totaling 206 mm (8.1 in) over 15 days, leading to a high humidity level of 84%. In contrast, January experiences much colder temperatures, with a minimum of -3°C (26°F) and a maximum of 17°C (63°F), averaging just 6°C (43°F). Precipitation is considerably lower at 58 mm (2.3 in) over 8 days, and humidity drops to 75%. For more detailed information, you can check out Fukuoka weather in January.
September weather in Fukuoka is characterized by warm temperatures, with daily averages reaching up to 24°C (76°F) and maximums soaring to 35°C (96°F). This month also sees significant rainfall, totaling 206 mm (8.1 in) over about 15 days, accompanied by high humidity levels around 84%. In contrast, February presents a much cooler climate, with minimum temperatures dipping to -3°C (26°F) and averaging just 7°C (45°F), while highs reach 22°C (72°F). Precipitation is markedly lower at 80 mm (3.1 in) over 10 days, and humidity decreases to 71%.
For more detailed information on February weather in Fukuoka, you can visit Fukuoka weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a minimum of 13°C (56°F) to a warm average of 24°C (76°F), peaking at a scorching 35°C (96°F). This month is also characterized by high humidity at 84% and significant precipitation, with 206 mm (8.1 in) falling over 15 days. In contrast, March experiences much cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 23°C (73°F), averaging around 11°C (52°F). Precipitation is lower at 121 mm (4.8 in) over 11 days, and humidity sits at a more moderate 71%. For more details on the March climate, you can refer to Fukuoka weather in March.
When comparing the weather between September and April, we observe distinct differences in temperature and precipitation. September features a wide temperature range, with minimums of 13°C (56°F) and maximums reaching up to 35°C (96°F), creating a warm average of 24°C (76°F). In contrast, April is much cooler, with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 28°C (83°F), resulting in an average of 15°C (59°F). Additionally, September experiences more precipitation, totaling 206 mm (8.1 in) over 15 days, whereas April sees significantly less rain, with 115 mm (4.5 in) spread across just 9 days. Humidity levels also reflect the seasonal differences, with September at 84% compared to April's 78%. For more details, you can check out Fukuoka weather in April.
September and May exhibit distinct weather patterns, with September typically warmer and more humid. In September, the average temperature is around 24°C (76°F), peaking at 35°C (96°F), compared to May's average of 20°C (68°F) and a maximum of 31°C (88°F). Both months share a high humidity of 84%, but September experiences more rainfall, with 206 mm (8.1 in) over 15 days, slightly higher than May's 163 mm (6.4 in) across 12 days. For those interested in learning more about May weather specifically, you can check out Fukuoka weather in May.
When comparing the weather in September to that in June, both months exhibit similar temperature ranges, with September showing a minimum of 13°C and a maximum of 35°C, while June has a slightly higher minimum of 14°C and a maximum of 33°C. The average temperature in September is marginally warmer at 24°C compared to June's average of 23°C. Precipitation levels are quite close, with September receiving 206 mm over 15 days and June recording 199 mm over 14 days, indicating a similarly wet climate. Humidity levels remain high in both months, with September at 84% and June slightly higher at 86%. For more detailed insights, you can visit Fukuoka weather in June.
In July, the weather tends to be warmer, with temperatures ranging from a minimum of 18°C (64°F) to a maximum of 36°C (98°F), and an average of 27°C (81°F). However, it also brings more rainfall, with a total of 367 mm (14.4 in) spread across 20 days, resulting in a higher humidity level of 92%. In contrast, September displays slightly cooler temperatures, with a minimum of 13°C (56°F), an average of 24°C (76°F), and a maximum of 35°C (96°F). Although September still sees significant precipitation at 206 mm (8.1 in), it experiences fewer rainy days, totaling 15. This leads to a lower humidity level of 84%. For a more detailed look at July weather, you can visit Fukuoka weather in July.
In comparing the weather between August and September, September experiences a notable drop in temperature, with minimums around 13°C (56°F) compared to August's warmer nights at 19°C (66°F). The average temperature in September is 24°C (76°F), which is significantly cooler than August's average of 28°C (83°F). August also tends to be hotter, reaching maximums of 37°C (100°F), while September's highs are around 35°C (96°F). Additionally, September sees a substantial decrease in precipitation, with 206 mm (8.1 in) over 15 days, compared to August's higher total of 303 mm (11.9 in) during the same number of days. Humidity levels are slightly lower in September at 84%, as opposed to the more humid August at 91%. For more detailed information, you can visit Fukuoka weather in August.
September weather is characterized by warmer temperatures, with a minimum of 13°C (56°F) and a maximum reaching up to 35°C (96°F), averaging around 24°C (76°F). This month also experiences significant rainfall, totaling 206 mm (8.1 in) across 15 days, coupled with high humidity levels at 84%. In contrast, October sees a noticeable drop in temperatures, with a minimum of 8°C (47°F) and an average of 19°C (67°F), while the maximum temperature is slightly reduced to 32°C (89°F). Rainfall also diminishes, bringing 113 mm (4.5 in) of precipitation over 10 days and maintaining a similar humidity level at 83%. For more detailed information, you can check Fukuoka weather in October.
September and November showcase a stark contrast in weather characteristics. In September, temperatures range from a minimum of 13°C (56°F) to a scorching maximum of 35°C (96°F), with an average of 24°C (76°F). The month receives significant rainfall, totaling 206 mm (8.1 in) over 15 days, coupled with high humidity at 84%. In contrast, November sees much cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 25°C (77°F), resulting in an average temperature of 13°C (56°F). Precipitation drops notably to 52 mm (2.1 in) over just 7 days, and humidity remains relatively low at 81%. For more details, check out Fukuoka weather in November.
In September, the weather is significantly warmer with an average temperature of 24°C (76°F), reaching highs of up to 35°C (96°F), while December experiences much cooler conditions, with an average temperature of only 8°C (46°F) and a maximum of 23°C (73°F). Notably, September is also much wetter, recording 206 mm (8.1 in) of precipitation over 15 days, compared to December's 68 mm (2.7 in) over just 8 days. Humidity levels are slightly higher in September at 84%, while December sees a lower humidity of 79%. For more detailed information, check out Fukuoka weather in December.
As summer transitions to autumn, September in Fukuoka showcases a unique blend of warmth and humidity that distinguishes it from other months. With a maximum temperature often soaring to 35°C, the heat can still linger, yet the average temperature cools to a more moderate 24°C. However, the month is also marked by increased rainfall, with precipitation occurring on about half of the days, contributing to a relative humidity of 84%. This combination of warmth and moisture sets September apart, offering both a sultry atmosphere and the cooling relief of seasonal rain. For more detailed insights on Fukuoka's weather patterns, visit Fukuoka Climate.