Last updated: August 21, 2025
In October, Shimonoseki, Japan, experiences a delightful transition into autumn, with maximum temperatures reaching 27°C (82°F) and a comfortable average of 20°C (68°F). The cooler evenings bring temperatures down to a pleasant minimum of 14°C (57°F). While the month is characterized by high humidity at 79%, it also sees a fair share of rain, accumulating 121 mm (4.7 in) over 11 days. This combination of warm temperatures and refreshing precipitation makes October a vibrant time to explore the beauty of Shimonoseki.
In October, Shimonoseki welcomes a delightful transition into autumn, with temperatures showcasing a comfortable range. The average temperature rises to a pleasant 20°C (68°F), while highs reach a maximum of 27°C (82°F), offering ideal conditions for outdoor activities and sightseeing. As the month progresses, the evenings start to cool down, with minimum temperatures settling around 14°C (57°F). This noticeable shift from the summer's warmth not only marks a significant change in the weather but also heralds the arrival of stunning fall foliage, making October a particularly beautiful time to explore this coastal city.
In October, Shimonoseki experiences a moderate level of precipitation, with an average of 121 mm (4.7 in) of rainfall spread over 11 days. This amount marks a noticeable decrease compared to the intense summer months, where July and August recorded their highest totals at 295 mm and 251 mm, respectively. As the city transitions into autumn, the rainfall begins to taper off from the heavier downpours characteristic of late summer and early fall. The following months, particularly November and December, showcase even drier conditions, reinforcing a trend of diminishing precipitation as winter sets in. This seasonal shift helps paint a picture of Shimonoseki's unique climate, balancing between lush, rain-soaked summers and the crisper, drier months ahead.
In Shimonoseki, Japan, October brings a welcome shift in humidity, settling at a comfortable 79%. This marks a decline from the sweltering highs of summer, where July peaked at a staggering 95%, and August remained high at 93%. As the year progresses, humidity ebbs and flows; after a humid summer, September's 84% serves as a prelude to the more moderate conditions of October. Following this, the levels dip further in November and December, returning to the 76% and 75% ranges seen in the early months of the year. This trend highlights a seasonal cycle of humidity that creates varied, yet recognizable, patterns throughout the year, making October a pivotal moment of transition in Shimonoseki’s climate.
In October, Shimonoseki experiences a moderately high UV Index of 7, which translates to a burn time of 25 minutes. This marks a decline from the more intense extreme levels recorded over the summer months, where the index peaked at 12 in both July and August. As the season transitions towards cooler temperatures, the UV exposure shifts to a high category, encouraging residents and visitors to remain cautious during peak sunlight hours. Notably, the UV Index in October is a significant decrease compared to the very high levels in the preceding months of March to September. For those planning outdoor activities, staying sun-safe through protective measures is still essential. For more detailed information, visit the Shimonoseki UV Index.
UV Risk Categories
October in Shimonoseki, Japan, shines with an impressive 253 hours of sunlight, maintaining a pleasant brightness as the warm hues of early autumn linger. This month follows a vibrant August, which boasts the peak of sunshine at 305 hours, setting the tone for the seasonal transition. Although October experiences a slight reduction in daylight compared to September's 256 hours, it still represents a robust stretch of sunshine that adds to the region's natural beauty. As daylight gradually wanes heading into November, Shimonoseki's October sun offers a comforting glow, capturing the essence of fall and inviting residents and visitors alike to enjoy its scenic landscapes.
In Shimonoseki, Japan, October stands out with a notably higher chance of sunshine, embracing a delightful 59% likelihood of sunny weather. This suggests a shift from the cooler, cloudier months of summer; July and August dip to only 24% and 27%, respectively. After a gradual increase from the lower percentages seen early in the year—where January starts at just 30%—October emerges as one of the sunniest months, rivaling the more traditionally bright spring and fall months like April and November, which hold 46% each. As autumn settles in, October offers a perfect blend of comfortable temperatures and a greater likelihood of enjoying the sun, making it an ideal time for outdoor activities in this picturesque coastal city.
As autumn settles in Shimonoseki, Japan, October ushers in a shift in daylight duration, featuring approximately 11 hours of light. This marks a gentle decline from the summer months, where the city basked in 14 hours of sunshine during June and July. As September rolls in, daylight begins to wane, with only 12 hours of sunlight, signaling the approach of shorter days. The trend continues into October, where the daylight hours decrease modestly, preparing residents for the forthcoming winter months. This gradual transition not only reflects the natural rhythm of the seasons but also sets the stage for cozy evenings as daylight becomes a precious commodity.
As October arrives in Shimonoseki, Japan, the winds begin to shift, bringing a gentle breeze that averages 4.6 m/s (10 mph). This slight uptick from the summer months reflects the onset of autumn, transitioning away from the calmness of July and August, when winds dipped to around 4.0 m/s (9 mph). Compared to the brisker winds of winter, which can soar to 6.5 m/s (15 mph) in January, October's winds create a mild and pleasant atmosphere, making it an ideal time for outdoor activities and enjoying the vibrant fall foliage. The gradual increase in wind speed from September’s 4.9 m/s (11 mph) to October hints at the changing seasons, subtly inviting residents and visitors alike to embrace the refreshing, cooler air.
Weather in Shimonoseki varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Shimonoseki, focusing on differences in temperature, rainfall, humidity, and UV levels.
October typically showcases warmer and more humid weather compared to January. With average temperatures around 20°C (68°F) and maximums reaching 27°C (82°F), October is characterized by milder conditions, despite receiving about 121 mm (4.7 in) of precipitation over 11 days. In contrast, January experiences much cooler temperatures, with averages of 8°C (46°F) and maximums of 17°C (64°F). The precipitation in January is lower at 84 mm (3.3 in), spread across 12 days, and the humidity slightly decreases to 76%. For a detailed look at January weather, check out Shimonoseki weather in January.
October and February present starkly contrasting weather patterns. In October, temperatures range from a mild 14°C (57°F) at night to a warm 27°C (82°F) during the day, with an average temperature of 20°C (68°F). The month sees considerable rainfall, totaling 121 mm (4.7 in) over 11 days, accompanied by higher humidity at 79%. In contrast, February experiences colder weather, with temperatures dipping to a minimum of -1°C (31°F) and averaging just 8°C (46°F), peaking at 18°C (65°F). Precipitation in February is lower at 93 mm (3.6 in), but humidity remains relatively low at 72%. For a deeper look at February conditions, check out Shimonoseki weather in February.
When comparing the weather in October and March, significant differences can be observed. October tends to be warmer, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 27°C (82°F), averaging around 20°C (68°F). In contrast, March is much cooler, with temperatures ranging from 4°C (39°F) to 18°C (64°F) and an average temperature of only 11°C (52°F). Precipitation levels are relatively high in both months, with October receiving 121 mm (4.7 in) over 11 days, while March sees even more rainfall at 165 mm (6.5 in) over 12 days. Additionally, October's humidity is higher at 79%, compared to March's 69%. For more detailed insights, check out Shimonoseki weather in March.
When comparing the weather between October and April, several notable differences emerge. October typically sees warmer temperatures, with daily averages around 20°C (68°F) compared to April’s cooler average of 14°C (58°F). The maximum temperatures in October can reach up to 27°C (82°F), while April peaks at 22°C (71°F). In terms of precipitation, October has a total of 121 mm (4.7 in) falling over 11 days, slightly less than April’s 129 mm (5.1 in) over 10 days. Humidity levels are also higher in October at 79%, compared to 75% in April, contributing to a more humid feel during the fall month. For specific information on April weather, you can visit Shimonoseki weather in April.
When comparing the weather between October and May, we see some notable differences. October generally has slightly warmer temperatures, with average highs reaching up to 27°C (82°F) compared to May's maximum of 25°C (77°F). However, May's temperatures are consistent, with a minimum of 12°C (54°F) and an average of 18°C (65°F), making it a bit cooler overall. In terms of precipitation, October experiences slightly less rainfall—121 mm (4.7 in) over 11 days—while May sees more precipitation at 141 mm (5.5 in) across 10 days. Humidity levels are also comparable, with October at 79% and May higher at 84%. For more detailed information, you can visit Shimonoseki weather in May.
In comparing the weather between October and June, both months experience similar maximum temperatures, reaching around 27°C (81°F) on average. However, October tends to be slightly cooler, with minimum temperatures of 14°C (57°F) compared to June's 16°C (62°F). While October has a lower average precipitation of 121 mm (4.7 in) over 11 days, June sees a significantly higher total of 194 mm (7.7 in) during the same number of days, resulting in a more humid atmosphere, peaking at 88% in June versus 79% in October. For more details on June weather, you can refer to Shimonoseki weather in June.
When comparing the weather in October and July, October presents a more temperate climate with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 27°C (82°F), while July experiences warmer conditions, with temperatures ranging from 20°C (69°F) to 31°C (88°F). July is also significantly wetter, with an average precipitation of 295 mm (11.6 in) over 16 days, compared to October's 121 mm (4.7 in) across 11 days. Moreover, July's humidity peaks at 95%, making the air feel much muggier than in October, where humidity sits at 79%. For more detailed information about the climate in July, check out Shimonoseki weather in July.
In comparing the weather of October and August, October offers a cooler climate with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 27°C (82°F). The month experiences a moderate level of precipitation at 121 mm (4.7 in), occurring over 11 days, and boasts a humidity level of 79%. In contrast, August is significantly warmer, featuring an average temperature between 21°C (69°F) and 32°C (89°F), with 251 mm (9.9 in) of rain falling over 13 days and a higher humidity of 93%. For those interested in more detailed August weather patterns, visit Shimonoseki weather in August.
In comparing the weather patterns of October and September, we see marked differences in both temperature and precipitation. October presents a cooler range of temperatures, with a minimum of 14°C (57°F), an average of 20°C (68°F), and a maximum of 27°C (82°F). In contrast, September is notably warmer, with temperatures reaching a minimum of 18°C (65°F), averaging 24°C (76°F), and peaking at 32°C (89°F). Precipitation levels also shift, as October records 121 mm (4.7 in) over 11 rainy days, while September is wetter, with 226 mm (8.9 in) of rain over 12 days. Additionally, while humidity remains relatively high in both months, it is slightly higher in September at 84%, compared to October’s 79%. For a more detailed look at September’s weather, you can refer to Shimonoseki weather in September.
October tends to be warmer, featuring a mild average temperature of 20°C (68°F), with highs reaching up to 27°C (82°F). This month also sees higher precipitation, averaging 121 mm (4.7 inches) over 11 days, contributing to a higher humidity level of 79%. In contrast, November experiences cooler temperatures, with an average of 15°C (59°F), as well as lower maximum temperatures of 23°C (74°F). Additionally, November registers significantly less rainfall, totaling 54 mm (2.1 inches) over just 8 days and a humidity level of 76%. For a detailed look at what to expect, visit Shimonoseki weather in November.
October and December offer contrasting weather experiences. October enjoys milder temperatures with an average of 20°C (68°F) and peaks reaching 27°C (82°F), alongside a higher humidity level of 79%. In contrast, December's average cools down to 10°C (50°F), with daytime highs reaching only 20°C (68°F) and chilly nighttime lows of 1°C (34°F). While October sees more rain with 121 mm (4.7 in) of precipitation over 11 days, December has slightly less precipitation at 89 mm (3.5 in) across 12 days. For more detailed information, check out Shimonoseki weather in December.
As October arrives in Shimonoseki, the weather begins to transition, offering a refreshing change from the sweltering summer months. With average temperatures comfortably hovering around 20°C (68°F), this month brings a pleasant respite, though the humidity remains a notable 79%. Rainfall also makes its presence known, with about 121 mm (4.7 in) spread over 11 days, contributing to the region's lush autumn landscape. Unlike the heat of summer, October invites visitors to experience the city's charm under cooler skies, making it an ideal time for outdoor explorations. To learn more about the variations in climate throughout the year, check out Shimonoseki Climate.