October Weather in Hachimantai, Japan

Last updated: August 21, 2025

Discover the enchanting October weather in Hachimantai, Japan, where nature showcases its vibrant palette. Visitors can expect daytime temperatures to reach a comfortable maximum of 26°C (78°F), while evenings cool down to an average of 11°C (53°F) and can drop to a brisk 0°C (33°F). The month brings 152 mm (6.0 in) of rainfall over 11 days, contributing to the lush landscape. With humidity levels hovering around 82%, the atmosphere is crisp yet invigorating, making it the perfect backdrop for autumn adventures amidst the stunning scenery. Enjoy the beauty of fall foliage as you explore this picturesque region!

October Temperature in Hachimantai

In October, Hachimantai, Japan, ushers in a delightful shift as temperatures cool from the summer heat. The month begins with minimums around 0°C (33°F), providing a crisp backdrop that invites autumn's vibrant hues. Daytime temperatures average a comfortable 11°C (53°F), making it a pleasant time for outdoor exploration. With highs reaching up to 26°C (78°F), October experiences a notable warmth compared to the chillier months that follow. This transitional phase not only highlights the beauty of fall foliage but also illustrates a clear drop from September's lingering warmth, which can peak at 31°C (88°F). Overall, October embodies a refreshing blend of mild warmth and the crispness of autumn, marking a perfect time to enjoy Hachimantai's stunning natural landscapes.

October Weather in Hachimantai: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Hachimantai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hachimantai, October typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec242535445662707264534129
Data source: Temperature data for Hachimantai generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Hachimantai

In October, Hachimantai experiences a notable peak in precipitation, recording 152 mm (6.0 in) of rain over 11 days. This marks a continuing trend from the wet summer months of July and August, when rainfall was abundant, contributing to the region's lush scenery. The October figures indicate a slight decline in rainy days compared to the more humid months prior, despite the higher total precipitation, suggesting that when it does rain, it can be quite intense. As the landscape shifts into autumn, the refreshing rains of October play a crucial role in nourishing the local flora, setting the stage for the vibrant fall colors that characterize the region.

October Precipitation Trends in Hachimantai

The chart displays monthly precipitation patterns in Hachimantai, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Hachimantai, October typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec6284981191001131551451141526688
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Hachimantai

In Hachimantai, Japan, October typically ushers in a noticeable shift in humidity levels, settling at a comfortable 82%. This marks a decrease from the peak humidity experienced during the sweltering summer months of July and August, both at 92%. Following the vibrant blooms of spring, where humidity begins to decline gradually, October captures the essence of the transition into autumn. Although slightly higher than the late spring figures, this month's humidity remains palatable compared to the staggering averages of 87% in June and 86% in September. As the air cools, Hachimantai’s October humidity invites residents and visitors to embrace the crispness of fall while still enjoying moderate moisture in the atmosphere.

October Average Humidity in Hachimantai

This chart illustrates the average monthly humidity levels in Hachimantai, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Hachimantai is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Hachimantai

As October unfolds in Hachimantai, Japan, residents and visitors can expect a UV Index of 6, classifying it as high. This signals a slight decline from the sweltering summer months, yet the burn time remains a moderate 25 minutes. It's a noticeable shift from the extremes of June and August, both peaking at an impressive 11. During the spring, especially in May and April, the UV levels soar into the very high category, urging caution and sun protection. As we transition into the cooler months, the UV Index gradually drops, returning to moderate values by November and December. For those planning outdoor activities this October, it's an ideal time to enjoy the changing foliage without excessive sun exposure. Stay informed about the local UV conditions by checking the Hachimantai UV Index.

Maximum UV Index Levels in Hachimantai for October

The chart shows the monthly maximum UV Index (UVI) for Hachimantai in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Hachimantai typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891110119643
Data source: Hachimantai October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

October Sunshine in Hachimantai

In Hachimantai, Japan, October brings a delightful contrast to the sunny summer months, offering 211 hours of sunshine. While this marks a decline from the peak of 288 hours in May, the month remains a vibrant time to appreciate the autumn scenery. The gradual reduction of sunshine hours from peak summer to October reflects the changing seasons, with October holding onto more light than the colder months ahead, like November with only 195 hours. This seasonal shift, paired with the stunning autumn foliage, creates an enchanting backdrop, encouraging visitors to embrace the crisp air and the brilliant hues of fall. As daylight diminishes, October invites both locals and travelers to savor the beauty of nature before winter sets in.

Monthly Sunshine Duration in Hachimantai: October Highlighted

The October sunshine duration represents the total number of hours Hachimantai experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec152h200h250h258h288h272h269h254h241h211h195h182h
Data source: Hachimantai October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hachimantai During October

In Hachimantai, Japan, the likelihood of sunny weather in October stands at 34%, making it a comparatively bright month as autumn settles in. This percentage reflects a gradual increase in sunshine probability as the year progresses toward the end, especially when compared to the summer months of July and August, which see much lower chances of clear skies. Interestingly, October often fluctuates between the sunniest segments of the fall months, edging out November's 37% while remaining below the peak of April's 41%. As the cooler temperatures set in, this moderate chance of sunny days creates a beautiful backdrop for enjoying the stunning autumn foliage that the region is renowned for.

Percentage of Sunny Days in October in Hachimantai

The chart illustrates the percentage of sunny days in Hachimantai throughout the year, with October highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Hachimantai experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%38%30%41%26%28%26%17%29%34%37%31%
Data source: Hachimantai October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hachimantai in October

As October arrives in Hachimantai, Japan, daylight begins to wane, offering approximately 11 hours of light each day. This marks a subtle shift from the vibrant summer months, where daylight peaked at 14 hours from June to August. Following the gradual decline seen in September, October maintains a balance between light and shadow before yielding to the shorter days of winter, where daylight falls to just 9 hours by November. This transition not only signifies the changing seasons but also invites a tranquil beauty, as the landscape transforms in response to the dwindling sunlight.

Average Daylight Hours in Hachimantai for October

The chart illustrates the variation in daylight duration in Hachimantai throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 40m10h 40m11h 56m13h 15m14h 22m14h 56m14h 39m13h 40m12h 25m11h 7m9h 58m9h 22m
Data source: Hachimantai daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Hachimantai

As October unfolds in Hachimantai, Japan, the winds begin to settle into a gentle rhythm, with an average speed of 2.3 m/s (5 mph). This marks a delightful transition from the summer calm, where winds dipped to their lowest points in July and August, averaging only 1.8 m/s (4 mph) and 2.2 m/s (5 mph), respectively. September offers only a slight recovery, before the crispness of autumn settles in. The October breeze serves as a soft reminder of the seasonal shift, echoing the mild winds of April and resuming a steadier pace akin to the lingering freshness of spring. As the year progresses towards winter, we can anticipate a gradual increase in wind speeds, ultimately blooming again in December at 3.2 m/s (7 mph).

Average October Wind Speed in Hachimantai

The chart displays monthly wind speed patterns in Hachimantai, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.13.83.23.12.92.11.82.22.32.3 m/s2.73.2
Data source: Hachimantai October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Hachimantai Compares to Other Months

Weather in Hachimantai varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Hachimantai, focusing on differences in temperature, rainfall, humidity, and UV levels.

October and January present striking contrasts in weather conditions. In October, temperatures can range from a minimum of 0°C (33°F) to a pleasant maximum of 26°C (78°F), with an average temperature of 11°C (53°F). This month also sees moderate precipitation, with about 152 mm (6.0 in) falling over 11 days, accompanied by a relatively high humidity of 82%. In contrast, January brings much colder weather, with temperatures dropping substantially; the minimum is -18°C (1°F), the average is -4°C (24°F), and the maximum only reaches 5°C (41°F). Precipitation during January is lower, totaling 62 mm (2.4 in) also over 11 days, while humidity slightly decreases to 80%. For a detailed look at January weather in Hachimantai, visit Hachimantai weather in January.

October and February present contrasting weather experiences. In October, temperatures range from a minimum of 0°C (33°F) to a maximum of 26°C (78°F), with an average of 11°C (53°F). This month also sees relatively high humidity at 82% and significant precipitation of 152 mm (6.0 in), spread over about 11 days. In contrast, February is much colder, with temperatures dipping as low as -20°C (-4°F) and averaging -4°C (26°F), peaking at only 8°C (46°F). Although February has lower overall precipitation at 84 mm (3.3 in) over 15 days, the humidity is slightly lower at 79%. For those interested in more detailed information on February weather, visit Hachimantai weather in February.

October and March present stark contrasts in weather patterns. In October, temperatures range from a minimum of 0°C (33°F) to a comfortable maximum of 26°C (78°F), with an average temperature of 11°C (53°F). This month also experiences significant precipitation, with about 152 mm (6.0 in) falling over 11 days, alongside relatively high humidity at 82%. Conversely, March is notably colder, featuring a minimum temperature of -17°C (1°F) and an average of just 2°C (35°F), with a maximum reaching 17°C (63°F). Precipitation in March, totaling 98 mm (3.9 in) over 14 days, is combined with a lower humidity level of 77%. For more insights on the weather during this month, you can check Hachimantai weather in March.

In comparing the weather of October and April, October presents a milder climate with average temperatures ranging from a low of 0°C (33°F) to a high of 26°C (78°F) and a significantly higher average humidity of 82%. Precipitation during October is also notable, with 152 mm (6.0 in) falling over 11 days. In contrast, April has cooler temperatures, with a minimum of -10°C (15°F) and a maximum of 23°C (73°F), along with lower precipitation at 119 mm (4.7 in) over 17 days. The overall humidity in April is slightly lower at 75%. For more details on the conditions in April, you can check Hachimantai weather in April.

In October, temperatures range from a chilly 0°C (33°F) to a warm 26°C (78°F), with an average of 11°C (53°F), while May sees slightly higher temperatures from a minimum of 2°C (35°F) to a maximum of 29°C (85°F) and an average of 13°C (56°F). Both months experience substantial rainfall, with October receiving 152 mm (6.0 in) over 11 days and May contributing 100 mm (3.9 in) across 13 days. Interestingly, October has a higher humidity level at 82%, compared to May's 80%. For a closer look at May's weather specifics, visit Hachimantai weather in May.

When comparing the weather in October and June, noticeable differences emerge in temperature and precipitation patterns. October experiences a wider temperature range, with minimums dropping to 0°C (33°F) and maximums reaching 26°C (78°F), while June maintains milder temperatures, ranging from a minimum of 5°C (42°F) to a maximum of 29°C (84°F). Additionally, October is characterized by higher precipitation, averaging 152 mm (6.0 in) over 11 days, compared to June's 113 mm (4.4 in) across 13 days. Humidity levels are also slightly elevated in June at 87%, in contrast to October's 82%. For more detailed insights, you can check Hachimantai weather in June.

Comparing the weather in October and July reveals notable differences in temperature and humidity. October experiences cooler temperatures, with a minimum of 0°C (33°F) and an average of 11°C (53°F), significantly lower than July's minimum of 12°C (55°F) and average of 21°C (71°F). While both months see comparable precipitation—152 mm (6.0 in) in October versus 155 mm (6.1 in) in July—October's rain typically falls over fewer days (11 days compared to July's 18). Additionally, October's humidity is slightly lower at 82%, while July's humidity peaks at 92%. For a closer look at the weather specifics in July, visit Hachimantai weather in July.

Comparing the weather of October and August reveals notable differences in temperature and humidity levels. In October, temperatures range from a chilling 0°C (33°F) at night to a pleasant 26°C (78°F) during the day, with an average of 11°C (53°F). This month experiences a substantial amount of precipitation, totaling 152 mm (6.0 in) over 11 days, contributing to a humidity level of 82%. Conversely, August boasts much warmer conditions with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), averaging 22°C (72°F). The precipitation in August is slightly lower at 145 mm (5.7 in) but occurs over more days—16 in total—and the humidity is higher at 92%. For more details on weather patterns, you can check out Hachimantai weather in August.

October weather shows a noticeable shift from September's warmer conditions. While September boasts average temperatures around 18°C (64°F) with a maximum of 31°C (88°F), October sees a drop in the average to 11°C (53°F) and a maximum of 26°C (78°F). Precipitation increases in October to 152 mm (6.0 in) over 11 days, compared to September's 114 mm (4.5 in) spread over 13 days, indicating a wetter month. Humidity remains relatively high in both months, with October at 82% and September slightly higher at 86%. For a more detailed look at September's weather, check out Hachimantai weather in September.

October's weather presents a mild transition into autumn, with average temperatures ranging from a minimum of 0°C (33°F) to a maximum of 26°C (78°F), and significant humidity of 82%. The month experiences substantial rainfall, totaling 152 mm (6.0 in) over 11 days. In contrast, November brings a notable drop in temperature, with averages dipping to a minimum of -12°C (11°F) and a maximum of 18°C (65°F). While November is less wet, with only 66 mm (2.6 in) of precipitation also spread over 11 days, the humidity decreases slightly to 79%. For more detailed information, visit Hachimantai weather in November.

October and December exhibit stark contrasts in weather conditions. In October, temperatures range from a minimum of 0°C (33°F) to a pleasant maximum of 26°C (78°F), with an average of 11°C (53°F). This month also sees considerable rainfall, with precipitation totaling 152 mm (6.0 in) over about 11 days, accompanied by high humidity levels of 82%. In contrast, December brings much colder temperatures, with a minimum of -12°C (10°F) and a maximum of 12°C (55°F), averaging -1°C (30°F). While precipitation decreases to 87 mm (3.4 in) over 15 days, the humidity remains relatively stable at 80%. For a more detailed look at weather conditions, visit Hachimantai weather in December.

Compare Hachimantai's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Hachimantai

As October unfolds in Hachimantai, the transition from warm to cool becomes strikingly evident. With maximum temperatures settling at a comfortable 26°C and a notable average of 11°C, this month offers a refreshing respite from the heat of summer. However, as temperatures dip to a chilly minimum of 0°C, visitors will feel the brisk air that often marks the arrival of autumn. October also sees an increase in precipitation, with frequent showers contributing to a total of 152 mm over approximately 11 days, creating a lush, vibrant landscape. Furthermore, the humidity hovers around 82%, enhancing the crispness in the air and inviting explorers to enjoy the rich natural beauty of the season. For a deeper dive into weather patterns, visit Hachimantai Climate.