August Weather in Hachimantai, Japan

Last updated: August 21, 2025

Experience the fluctuating summer climate of Hachimantai, Japan, in August, where temperatures can soar up to a maximum of 33°C (92°F), while the average rests comfortably at 22°C (72°F). As the day transitions into cooler nights, temperatures can dip to a refreshing 10°C (50°F). However, be prepared for frequent rainfall during this month, with 145 mm (5.7 in) of precipitation spread over 16 days, resulting in a soaring humidity level of 92%. Embrace the vibrant natural landscapes, but don’t forget your umbrella!

August Temperature in Hachimantai

In August, Hachimantai, Japan, enjoys a delightful summer warmth with temperatures that showcase a vibrant shift from the winter chill. The month begins with a minimum temperature of 10°C (50°F) and peaks at a sizzling 33°C (92°F), contributing to an inviting average of 22°C (72°F). This trend of rising temperatures follows a steady progression from the cooler months, where January's frigid lows hover around -18°C (1°F). As summer settles in, the region transforms into a beautiful landscape, perfect for outdoor activities under the sun. The warmth of August not only highlights nature's vibrancy but also serves as a precursor to the cooler autumn months that follow, marking the seasonal transition in this stunning part of Japan.

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

The chart illustrates August 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, August 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.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Hachimantai

August in Hachimantai, Japan, experiences significant rainfall, with an average precipitation of 145 mm (5.7 in) over 16 days. This amount is slightly less than the previous month of July, which recorded the highest rainfall of the year at 155 mm (6.1 in). The summer months show a pattern of heightened precipitation, providing a lush backdrop to the city’s vibrant landscapes. Following August, September sees a decrease in rainfall to 114 mm (4.5 in), indicating a gradual shift toward drier conditions as the seasons transition. Overall, the trend in Hachimantai reflects a peak in summer rains, essential for the region's flora and fauna before the arrival of autumn.

August Precipitation Trends in Hachimantai

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

August Humidity in Hachimantai

In August, Hachimantai, Japan, experiences a peak in humidity, maintaining a steady 92%, consistent with the high levels seen in July. This summer month continues a trend of rising humidity that begins in late spring, where levels rise from 75% in April to 87% in June. The warm, moist air prevalent during this time contributes to the lush greenery and vibrant landscapes for which the region is known. As the year progresses, humidity gradually decreases from August into September, settling at 86%, yet still remains notably high. This pattern underscores Hachimantai's characteristic summer climate, where warmth and moisture create an inviting atmosphere.

August Average Humidity in Hachimantai

This chart illustrates the average monthly humidity levels in Hachimantai, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Hachimantai

In August, Hachimantai experiences its peak UV Index, recorded at an extreme level of 11. This heightened intensity means that the potential for skin damage rises dramatically, with a burn time of just 10 minutes. Following the trend from June and July, where UV levels reached 11 and 10 respectively, August emphasizes the need for caution when enjoying outdoor activities. As summer progresses, the UV exposure becomes increasingly intense, reminding residents and visitors alike to equip themselves with appropriate sun protection measures. For more detailed insights on UV levels throughout the year, visit Hachimantai UV Index.

Maximum UV Index Levels in Hachimantai for August

The chart shows the monthly maximum UV Index (UVI) for Hachimantai in August, 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 August, the maximum UV index in Hachimantai typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891110119643
Data source: Hachimantai August 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.

August Sunshine in Hachimantai

In Hachimantai, Japan, August shines brightly with an impressive 254 hours of sunshine, reflecting the tail end of the summer months. This total fits neatly into a trend of gradually increasing daylight that begins in January with just 152 hours. As the seasons shift, the sunshine hours steadily rise, peaking in May at 288 hours. While August experiences a slight dip compared to the earlier summer months, it remains a significant contributor to the vibrant tapestry of sunlight that characterizes the region from spring through early autumn. The gentle decline into September, with 241 hours, signals the transition to cooler months, yet the warmth of summer lingers in the air, inviting visitors to savor the enduring rays of August.

Monthly Sunshine Duration in Hachimantai: August Highlighted

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

Chance of Sun in Hachimantai During August

In August, Hachimantai, Japan experiences a noticeable dip in sunny weather, with the likelihood of sunshine falling to just 17%. This represents the lowest chance of sun compared to the rest of the year, following a trend of decreasing sunshine probabilities through the summer months, from 26% in July to August's even more subdued outlook. In contrast, the spring months, such as April with 41%, showcase a much brighter picture. As autumn approaches, the chance of clear skies gradually improves, signaling that while August can be a bit dreary, the turning of the season brings back sunnier days.

Percentage of Sunny Days in August in Hachimantai

The chart illustrates the percentage of sunny days in Hachimantai throughout the year, with August 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 August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hachimantai in August

In Hachimantai, Japan, the daylight duration undergoes a fascinating transformation throughout the year. August sees a slight decline in sunlight, with approximately 13 hours of daylight, a continuation of the consistent 14-hour stretch experienced earlier in the summer. As the warm months wane, the region gradually shifts from June to August, capturing the essence of late summer days. Following this, September hints at the approaching autumn with its shorter 12 hours of daylight, serving as a gentle reminder of the shifting seasons. This rhythmic ebb and flow of light not only marks the passage of time in Hachimantai but also enriches the area’s vibrant natural landscape and seasonal activities.

Average Daylight Hours in Hachimantai for August

The chart illustrates the variation in daylight duration in Hachimantai throughout the year, with August 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.

August Winds in Hachimantai

In Hachimantai, Japan, August brings a gentle breath of wind, averaging 2.2 m/s (5 mph). This mild breeze is part of a noticeable trend throughout the year, as the wind speeds gradually decline from the brisker winter months to the calm summer season. Following a peak in the colder months—with January and February reaching wind speeds of 3.1 m/s (7 mph) and 3.8 m/s (8 mph)—the transition to summer reveals a consistent decrease, hitting a low in July at just 1.8 m/s (4 mph). Interestingly, August sees a slight uptick, providing a refreshing relief from the summer heat while maintaining a tranquil atmosphere. As the year progresses into autumn, wind speeds stabilize around 2.3 m/s (5 mph) in September and October, suggesting a gradual return to the more robust winds of late fall and winter. Such patterns create a harmonious landscape that characterizes life in Hachimantai.

Average August Wind Speed in Hachimantai

The chart displays monthly wind speed patterns in Hachimantai, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.13.83.23.12.92.11.82.2 m/s2.32.32.73.2
Data source: Hachimantai August wind data, generated using information from the Copernicus Climate Change Service.

How August 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 August’s weather to other months in Hachimantai, focusing on differences in temperature, rainfall, humidity, and UV levels.

August and January present strikingly different weather patterns. In August, temperatures range from a mild 10°C (50°F) to a hot 33°C (92°F), with an average of 22°C (72°F). The month is marked by high humidity at 92% and significant precipitation of 145 mm (5.7 in) over 16 days. In contrast, January experiences frigid conditions, with temperatures dipping as low as -18°C (1°F) and averaging -4°C (24°F). The maximum temperature reaches only 5°C (41°F), accompanied by lower precipitation of 62 mm (2.4 in) over just 11 days and a humidity level of 80%. For more specific details on January's weather, check out Hachimantai weather in January.

August and February present a stark contrast in weather conditions. In August, temperatures range from a mild 10°C (50°F) at night to a warm 33°C (92°F) during the day, with an average of 22°C (72°F). However, this month also brings significant humidity at 92% and considerable rainfall, totaling 145 mm (5.7 in) over 16 days. In contrast, February is characterized by frigid temperatures, with a minimum of -20°C (-4°F) and a maximum of 8°C (46°F), averaging -4°C (26°F). Although February experiences less precipitation than August, at 84 mm (3.3 in) over 15 days, the lower humidity at 79% exacerbates the cold. For a deeper insight into February's weather, you can explore Hachimantai weather in February.

August and March present stark contrasts in weather patterns. While August boasts warmer temperatures with a minimum of 10°C (50°F) and averages around 22°C (72°F), March is decidedly chillier, starting with a minimum of -17°C (1°F) and averaging just 2°C (35°F). Precipitation levels are also noteworthy; August sees 145 mm (5.7 in) over 16 days, contributing to a humid environment with 92% humidity. In contrast, March has lower precipitation at 98 mm (3.9 in) over 14 days, along with a relatively lower humidity level of 77%. For more detailed weather information in March, check out Hachimantai weather in March.

In comparing the weather of August and April, we see a significant contrast in temperatures and conditions. August boasts a much warmer climate with average temperatures reaching 22°C (72°F) and peaks soaring to 33°C (92°F). In contrast, April presents a cooler atmosphere, where average temperatures hover around 7°C (44°F) and can drop to a minimum of -10°C (15°F). Additionally, August experiences higher humidity at 92% and more precipitation, with 145 mm (5.7 in) over 16 days, compared to April’s 119 mm (4.7 in) over 17 days. If you're interested in more detailed April weather insights, you can check Hachimantai weather in April.

When comparing the weather in August and May, August generally offers warmer temperatures with an average of 22°C (72°F) and highs reaching up to 33°C (92°F), while May averages a cooler 13°C (56°F) with maximum temperatures of 29°C (85°F). In terms of precipitation, August experiences significantly more rainfall, totaling 145 mm (5.7 in) over about 16 days, compared to May's 100 mm (3.9 in) across 13 days. Additionally, August tends to be more humid, with an average humidity of 92%, compared to May's 80%. For a more detailed look at the weather conditions in May, you can check out Hachimantai weather in May.

When comparing the weather in August and June, it becomes clear that August is typically warmer and more humid. In August, temperatures range from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), with an average of 22°C (72°F), while June sees a lower temperature range, peaking at 29°C (84°F) and averaging 17°C (63°F). Additionally, August experiences more precipitation, with 145 mm (5.7 in) over 16 days compared to June's 113 mm (4.4 in) across 13 days. The humidity in August is also higher at 92%, slightly surpassing June's 87%. For more detailed information on June weather, you can visit Hachimantai weather in June.

In comparing the weather of July and August, both months exhibit relatively mild temperatures, with August showing a minor increase in average temperature. In July, temperatures range from a minimum of 12°C (55°F) to a maximum of 32°C (90°F), while in August, the temperatures are slightly warmer, with a minimum of 10°C (50°F) and a maximum of 33°C (92°F). Precipitation levels are comparable, with July receiving 155 mm (6.1 in) over 18 days, slightly more than August’s 145 mm (5.7 in) across 16 days. Humidity remains constant at a high 92% for both months, contributing to a consistently muggy atmosphere. For more detailed insights about July's weather, you can visit Hachimantai weather in July.

August weather tends to be warmer and more humid compared to September, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 33°C (92°F) and an average of 22°C (72°F). This month also experiences a significant amount of rainfall, totaling 145 mm (5.7 in) over 16 days, accompanied by high humidity levels at 92%. In contrast, September sees cooler temperatures, with a minimum of 3°C (38°F), an average of 18°C (64°F), and a maximum of 31°C (88°F). Precipitation in September is slightly lower at 114 mm (4.5 in) across 13 days, along with reduced humidity at 86%. For more detailed insights, check Hachimantai weather in September.

August and October showcase a distinct shift in weather patterns. In August, temperatures range from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), with an average of 22°C (72°F). This summer month experiences high humidity at 92% and considerable precipitation, totaling 145 mm (5.7 in) over 16 days. In contrast, October brings cooler weather, with temperatures dropping to a minimum of 0°C (33°F) and an average of 11°C (53°F), peaking at 26°C (78°F). Although October has slightly higher precipitation at 152 mm (6.0 in), it occurs over fewer days, just 11. The humidity in October is also lower at 82%, indicating a transition towards drier conditions. For more details on the weather in October, visit Hachimantai weather in October.

August weather presents a stark contrast to that of November, showcasing the peak of summer versus the onset of winter. In August, temperatures range from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), with an average of 22°C (72°F) and high humidity at 92%. This month also experiences significant precipitation, totaling 145 mm (5.7 in) over 16 days of rain. In sharp contrast, November sees much colder conditions, with temperatures dipping down to -12°C (11°F) at night and reaching a maximum of 18°C (65°F) during the day, resulting in an average of only 5°C (41°F). Precipitation in November is lower at 66 mm (2.6 in) over 11 days, and the humidity falls to 79%. For more details on November weather, you can visit Hachimantai weather in November.

August and December present quite contrasting weather conditions. In August, temperatures range from a pleasant 10°C (50°F) at night to a hot 33°C (92°F) during the day, accompanied by high humidity at 92% and significant precipitation of 145 mm (5.7 in) over 16 days. In contrast, December brings much colder temperatures, with a minimum of -12°C (10°F) and a maximum of just 12°C (55°F), reflecting an average of -1°C (30°F). Precipitation is reduced to 87 mm (3.4 in) over 15 days, and humidity levels drop to 80%. For a more detailed look at December conditions, check out Hachimantai weather in December.

Compare Hachimantai's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Hachimantai

August in Hachimantai brings a vibrant tapestry of weather, setting it apart from other months with its warm temperatures and high humidity. While the mercury can soar, reaching maximums of 33°C (92°F), the average remains a pleasant 22°C (72°F), making it perfect for summer adventures. However, with 145 mm of precipitation over 16 days, the month also carries the hallmark of the rainy season, which adds to the lush landscapes. With humidity levels peaking at 92%, the air feels alive, making August a unique blend of warmth and refreshing summer showers. If you're curious about what to expect throughout the year, check out the comprehensive details on the Hachimantai Climate.