Last updated: August 21, 2025
In Koshi, Japan, October heralds a transition where the average temperature hovers around 19°C (66°F), providing a comfortable climate for both locals and visitors alike. Daily temperatures can range from a pleasant maximum of 31°C (88°F) to a chilly minimum of 6°C (44°F), showcasing the month’s remarkable variance. However, with 107 mm (4.2 in) of rainfall spread over 8 days, it’s wise to be prepared for intermittent showers. The humidity level sits at a balmy 83%, making the air feel warm and slightly muggy, particularly during the day. Overall, October in Koshi offers a blend of warmth and refreshing rainfall, perfect for experiencing the striking autumn scenery.
As October unfolds in Koshi, Japan, the temperatures begin to shift noticeably with the onset of autumn. The month welcomes cooler nights with minimums dropping to 6°C (44°F), while sunny days can still reach a pleasant 31°C (88°F). This variation creates a delightful experience for outdoor enthusiasts, as the average temperature hovers around 19°C (66°F), offering a comfortable climate for exploring the vibrant fall foliage. Compared to the warmer summer months, October signals a gentle transition towards the chillier winter season, making it a perfect time to enjoy the crisp air and the stunning autumn scenery.
October in Koshi marks a notable transition in precipitation patterns, with the region receiving 107 mm (4.2 in) of rainfall over 8 days. This month serves as a bridge between the heavy downpours of summer and the lighter showers of winter. Compared to the dramatic rainfall of 478 mm (18.8 in) in July, October’s precipitation offers a gentler respite. The cooler temperatures and reduced rainfall from previous months suggest a gradual winding down of the wet season, paving the way for the drier months ahead. As autumn deepens, residents can expect clearer skies, yet October still delivers a significant amount of rain, highlighting the region's dynamic climatic shifts.
In October, humidity in Koshi, Japan stands at a comfortable 83%, representing a gentle decrease from the peak levels of the summer months. This month positions itself as a transitional period, following the heightened humidity of July and August, which often surpasses 90%. As autumn settles in, humidity levels drop gracefully from the 86% of June, hinting at the changing seasons. However, October maintains a relatively high moisture content, aligning closely with the levels seen in April and September. As the year progresses, a clear trend emerges: humidity peaks during the height of summer and gradually recedes, creating a lush yet refreshing atmosphere ideal for experiencing the captivating beauty of Japan's autumn landscape.
In October, Koshi experiences a very high UV Index of 8, indicating a significant increase in sun exposure potential. As the season shifts, residents and visitors alike should note that the burn time is approximately 15 minutes without protection, illustrating the ongoing need for sunscreen and appropriate clothing. This pattern follows a summer of extreme UV exposure, with several months peaking at 12, before gradually declining in intensity. The transition into fall reveals more manageable, yet still cautionary, levels of UV radiation. For those planning outdoor activities in October, it's essential to stay informed about sun safety to enjoy the beautiful autumn days without risking skin damage. For comprehensive details, visit Koshi UV Index.
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October in Koshi, Japan, is marked by a delightful blend of warm sunlight, boasting 247 hours of sunshine. This month wraps up the summer season beautifully, following the peak of 294 hours in August. As autumn settles in, sunlight begins to wane, but October still offers a generous share compared to the colder months ahead. While the hours of sunshine decrease from September's 248 hours, they remain higher than those in November and December, presenting a perfect opportunity for outdoor activities before the chill of winter sets in. The steady decline from the summer peak reveals a captivating transition into the vibrant hues of fall, making October a splendid time to enjoy the scenic beauty of Koshi.
As October rolls in, Koshi, Japan, embraces a notably brighter outlook with a 64% chance of sunny weather. This marks a significant increase from the summer months, where the likelihood of sunshine dwindles—peaking at just 18% in July. The trend showcases a return to more favorable conditions as the year progresses, especially when compared to June's gloomy 22%. Following the fluctuating conditions of late summer and early autumn, October stands out as a promising month for sun-seekers, offering a delightful respite before the cooler, cloudier months of November and December take hold, both of which settle back at 51%. Thus, October in Koshi presents an excellent opportunity for enjoying the outdoors under the sun.
In Koshi, Japan, the pattern of daylight duration throughout the year reveals a remarkable ebb and flow, with a gradual increase from 10 hours in January to a peak of 14 hours during June and July. As spring unfolds, the days lengthen significantly, reaching 12 hours by April and climbing to 13 hours come May. However, as summer wanes into October, the daylight begins to retreat, dropping back to 11 hours—a reminder that the darker months are on the horizon. This cyclical rhythm not only impacts the daily lives of residents but also enriches the experience of each season, marking nature’s undeniable transitions.
As October settles into Koshi, Japan, the wind begins to whisper a softer tune, with average speeds dropping to 2.0 m/s (5 mph)—one of the gentlest months of the year. Following a gradual decline from the summer months, the October breezes reflect the transition into autumn, where the once lively air softens, creating a serene atmosphere. This pattern marks a noticeable shift from the early-year averages, which typically hovered around 2.5 m/s (6 mph). The month’s subtle gusts invite the beauty of fall foliage to dance gracefully, embodying the quiet charm that characterizes Koshi during this time of year. As nature prepares for winter, the calm winds of October serve as a gentle reminder of the tranquil transformations in the seasons, embodying the delicate balance of change.
Weather in Koshi varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Koshi, focusing on differences in temperature, rainfall, humidity, and UV levels.
In October, temperatures in the region range significantly, with a minimum of 6°C (44°F), an average of 19°C (66°F), and a maximum of 31°C (88°F). The month experiences substantial precipitation, averaging 107 mm (4.2 in) over about 8 days, along with a high humidity level of 83%. In contrast, January sees much chillier conditions, where temperatures drop to a minimum of -5°C (24°F) and only reach a maximum of 17°C (63°F), with an average temperature of 6°C (42°F). Precipitation is lower in January at 54 mm (2.1 in) across 6 days, and the humidity decreases to 75%. For more details on the weather conditions in January, you can check out Koshi weather in January.
October and February showcase strikingly different weather conditions. October experiences milder temperatures, with a minimum of 6°C (44°F) and an average of 19°C (66°F), peaking at a warm 31°C (88°F). This month also sees higher humidity at 83% and receives 107 mm (4.2 in) of precipitation over about 8 days. In contrast, February is much cooler, characterized by a minimum temperature of -5°C (24°F) and an average of 7°C (44°F), with a maximum of 20°C (69°F). It experiences slightly less precipitation at 96 mm (3.8 in) over 10 days, but with lower humidity at 71%. For a detailed view of February weather conditions, you can check out Koshi weather in February.
When comparing the weather in October and March, there are notable differences in temperature and precipitation patterns. October features a comfortable temperature range, with a minimum of 6°C (44°F) and an average of 19°C (66°F), peaking at a warm 31°C (88°F). In contrast, March starts off cooler, with minimum temperatures dropping to -1°C (30°F) and an average of 11°C (52°F). Furthermore, March can reach a maximum of 24°C (75°F), showcasing a gradual warming trend as the month progresses.
Precipitation levels are also higher in March, with 131 mm (5.2 in) falling over 12 days compared to October's 107 mm (4.2 in) spread across 8 days. Additionally, the humidity in October is notably higher at 83%, while March experiences a lower humidity level of 71%. For a more detailed look at weather conditions during this time, you can check Koshi weather in March.
October and April present distinct weather characteristics, reflecting the transition of seasons. In October, typical temperatures range from a minimum of 6°C (44°F) to a maximum of 31°C (88°F), with an average of 19°C (66°F). The month experiences about 107 mm (4.2 in) of precipitation over approximately 8 days, accompanied by a higher humidity level of 83%. In contrast, April generally sees cooler conditions, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 28°C (82°F) and an average of 15°C (59°F). The precipitation is slightly higher at 132 mm (5.2 in) over 9 days, but the humidity is a bit lower at 78%. For a more detailed view of the climate, you can check out Koshi weather in April.
In comparing the weather of October and May, both months exhibit similar temperature ranges, with October averaging 19°C (66°F) and May slightly warmer at 19°C (67°F). However, October typically features a higher maximum temperature of 31°C (88°F), while May peaks at 30°C (86°F). Precipitation is notably higher in May, with 213 mm (8.4 in) falling over 12 days compared to October's 107 mm (4.2 in) over 8 days. Humidity levels remain comparable, with October at 83% and May slightly higher at 84%. For a more detailed look at May weather patterns, you can refer to this link: Koshi weather in May.
When comparing the weather in October and June, there are notable differences in temperature and precipitation. In October, temperatures range from a minimum of 6°C (44°F) to a maximum of 31°C (88°F), with an average temperature of 19°C (66°F). The month experiences a total of 107 mm (4.2 in) of precipitation over about 8 days, and humidity levels average around 83%. In contrast, June typically has a milder temperature range, with minimums at 13°C (55°F) and maximums at 32°C (89°F), averaging 23°C (73°F). However, June is significantly wetter, recording 274 mm (10.8 in) of precipitation across approximately 15 days, and it has a slightly higher humidity level at 86%. For more details on June weather, you can visit Koshi weather in June.
October and July present quite different weather experiences. In October, temperatures range from a chilly minimum of 6°C (44°F) to an average of 19°C (66°F), with a maximum of 31°C (88°F). This month sees an average precipitation of 107 mm (4.2 in) across about 8 days, with humidity at 83%. In contrast, July is significantly warmer, with minimum temperatures of 17°C (63°F), an average of 26°C (79°F), and maximums reaching 35°C (96°F). However, July is also much wetter, experiencing a substantial 478 mm (18.8 in) of rain over roughly 20 days, coupled with higher humidity at 92%. For more detailed information on weather in July, you can visit Koshi weather in July.
When comparing the weather in October and August, notable differences in temperature and precipitation are evident. October features a more moderate temperature range, with minimums around 6°C (44°F) and an average of 19°C (66°F), peaking at 31°C (88°F). In contrast, August is typically warmer, with minimum temperatures starting at 18°C (65°F), an average of 28°C (82°F), and maximums reaching up to 35°C (96°F).
Precipitation levels also vary significantly; October sees about 107 mm (4.2 in) of rain over 8 days, while August experiences heavier rainfall, totaling 277 mm (10.9 in) across 15 days. Additionally, humidity is slightly lower in October at 83% compared to August's 91%. For more detailed information on August weather in the region, you can visit Koshi weather in August.
In comparing the weather of October and September, it is clear that October experiences cooler temperatures overall, with average lows of 6°C (44°F) compared to September's milder minimum of 12°C (53°F). The average temperature in October is 19°C (66°F), significantly lower than September's 24°C (76°F), and October’s maximum reaches 31°C (88°F), whereas September sees peaks of 34°C (94°F). Precipitation levels also differ, with October receiving 107 mm (4.2 in) over 8 days, while September had higher rainfall at 184 mm (7.2 in) over 14 days. Humidity remains relatively consistent between the two months, with October at 83% and September slightly higher at 84%. For a deeper dive into the September weather patterns, you can explore Koshi weather in September.
October and November present a notable transition in weather patterns. October typically boasts warmer temperatures, with a minimum of 6°C (44°F) and an average high reaching up to 31°C (88°F), making it feel quite summery. In contrast, November sees cooler conditions, with temperatures dipping to a minimum of -1°C (30°F) and an average high of 25°C (77°F). While October experiences more precipitation at 107 mm (4.2 in) over about eight days, November is relatively drier with only 60 mm (2.4 in) over seven days. The humidity also slightly decreases from October's 83% to November's 81%. For more specific details about weather in November, check out Koshi weather in November.
October and December present contrasting weather patterns, reflecting the transition from autumn to winter. In October, temperatures range from a mild 6°C (44°F) at night to a warm 31°C (88°F) during the day, with an average of 19°C (66°F). The month sees significant precipitation, totaling 107 mm (4.2 inches) over approximately 8 days, contributing to a high humidity level of 83%. In contrast, December brings much cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 22°C (72°F), averaging 7°C (45°F). Although it experiences less rainfall at 71 mm (2.8 inches) over about 7 days, the humidity decreases slightly to 79%. For more details on December weather, you can check Koshi weather in December.
October in Koshi brings a delightful shift in weather, characterized by a mild climate that stands out compared to the hotter summer months. As temperatures gradually decrease, with maximums reaching 31°C by day and cooling down to a comfortable average of 19°C, residents and visitors can enjoy the crisp air. With an average of 107 mm of rainfall over about eight days, October sees a refreshing increase in humidity, creating an invigorating atmosphere. The blend of warm days and cooler nights makes it the ideal time for outdoor activities and enjoying the beautiful autumn foliage. To learn more about the climatic conditions throughout the year, visit Koshi Climate.