Last updated: August 21, 2025
In August, Hachioji, Japan experiences a vibrant summer characterized by high temperatures and considerable humidity. Daily maximums can soar up to 36°C (97°F), while the average hovers around a warm 26°C (79°F). Despite the heat, the month is also marked by frequent rainfall, with 195 mm (7.7 in) of precipitation spread over 23 days. Humidity levels remain high at 90%, contributing to a muggy atmosphere that defines this summertime experience. Whether enjoying outdoor activities or seeking refuge indoors, residents and visitors alike must prepare for fluctuating weather conditions.
In August, Hachioji, Japan experiences its warmest temperatures of the year, characterized by a tropical climate that can make the city feel quite lively. With minimum temperatures hovering around 15°C (59°F) and an average reaching 26°C (79°F), the heat is complemented by occasional peaks of up to 36°C (97°F). This month marks a significant transition from the mild summer days of previous months, showcasing the region's trend towards warmth and humidity. As families and tourists flock to the area, the vibrant atmosphere invites outdoor activities, making August a time of bustling energy and vibrant summer festivals, while those seeking respite might find solace in the cooler evenings.
In August, Hachioji experiences significant rainfall, with 195 mm (7.7 in) of precipitation spread across 23 days. This month follows the intense downpours of July, which recorded a staggering 312 mm (12.3 in), making it the wettest month of the year. The trend of increasing precipitation from the early months, culminating in heavy summer rains, underscores a notable shift in Hachioji’s climate pattern. While July is characterized by the highest precipitation, August maintains a robust wetness, indicating that the summer season is particularly prone to rain. Following August, precipitation remains elevated into September, yet slightly tapers off, suggesting a monthly transition towards the autumn months when the rainy season typically begins to wind down. Overall, these figures highlight Hachioji's summer as a time of substantial moisture, essential for the region's lush landscapes.
August in Hachioji, Japan, brings a notable peak in humidity levels, averaging around 90%, reflecting the intense summer heat. This month follows July, which typically records the highest humidity at 93%, creating a steamy climate that permeates the season. As the year progresses, humidity sees a gradual decline from the lush 81% in May and a sharp rise through the sultry months of June and July. Following August, September shows a slight decrease to 86%, signaling the onset of autumn. The overall trend throughout the year showcases a distinct pattern, with humidity reaching its zenith in the summer months, thereby contributing to Hachioji's characteristic warm and muggy conditions during this time.
August in Hachioji, Japan, continues the trend of extreme sun exposure, with a UV Index of 11. This level signifies the need for heightened caution, as individuals can burn in just 10 minutes of direct sunlight. Following a pattern established in May through July, August maintains this stark reality of protective measures being essential for outdoor activities. Whether it's a day at the park or a leisurely stroll, staying vigilant against the sun's intensity is crucial. As summer wraps up, the UV Index does begin to taper off in September, but for now, August stands out as a peak period for sun exposure. For more information on sun safety, check out the complete details at Hachioji UV Index.
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In August, Hachioji basks in a remarkable 284 hours of sunshine, making it one of the sunniest months of the year. This total builds on a steady climb from the earlier months, with sunlight hours peaking after a gradual ascent from 192 hours in January to a peak in the summer. The trend illustrates not just a seasonal increase but also the vibrant warmth that characterizes the region as it transitions from the humid days of July, which saw 227 hours. Following August, sunlight hours dip again to 235 in September, hinting at the impending arrival of autumn. Overall, Hachioji experiences a symphony of sunshine that showcases its delightful summer vibrancy, with August standing out as a shining jewel in the yearly calendar.
In Hachioji, Japan, the likelihood of sunny weather fluctuates throughout the year, with August experiencing a somewhat lower chance of sunny days at just 29%. This is part of a notable summer trend where sunny conditions diminish significantly, following the peak of 70% in February and a gradual decline through spring into the summer months. By July, the chance of sun drops to 27%, hinting at the onset of the more humid and unpredictable rainy season. Interestingly, as the year transitions back into autumn, the likelihood of sunshine begins to recover, with October seeing an increase to 46%. Thus, if you're planning a visit in August, be prepared for a mix of weather, as the increasing heat can often lead to cloudy skies and possible rain.
In Hachioji, Japan, daylight duration exhibits a fascinating trend throughout the year. Starting from January, with about 10 hours of sunlight, the days gradually lengthen as spring approaches, reaching a peak of 14 hours in both May and June. This abundant daylight allows residents to fully embrace the vibrant outdoor life during the warmer months. As summer wanes into August, daylight slightly decreases to 13 hours, signaling the onset of fall. The days continue to shorten, dropping to 12 hours in September and further to 10 hours by November. This rhythmic ebb and flow of daylight creates a seasonal tapestry, inviting both locals and visitors to appreciate the unique beauty that each month brings.
In Hachioji, Japan, the August winds bring a gentle breeze, with an average speed of 1.9 m/s (4 mph). This marks a slight increase from the calm July winds, which recorded just 1.5 m/s (3 mph), suggesting a transition into the late summer season. Throughout the year, wind speeds tend to vary modestly, peaking in early spring months, but August's calmness reflects the general trend of milder winds during the peak of summer. As the year progresses towards autumn, wind speeds slightly elevate again, hinting at the seasonal shifts ahead. This consistent yet mild breeze adds a comforting touch to Hachioji's warm August days, perfect for outdoor explorations under the serene skies.
Weather in Hachioji varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Hachioji, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present strikingly different weather patterns. In August, temperatures soar with an average of 26°C (79°F), peaking at 36°C (97°F), while the humidity remains high at 90%. This month is characterized by significant precipitation, totaling 195 mm (7.7 in) across 23 rainy days, creating a warm and often steamy atmosphere. In contrast, January brings a chill, with temperatures averaging just 3°C (37°F) and dipping as low as -13°C (9°F). The winter month experiences much less precipitation, at 53 mm (2.1 in), over only 7 days, and lower humidity levels at 76%. For more detailed information, you can check Hachioji weather in January.
August and February present strikingly contrasting weather conditions. In August, temperatures soar with a minimum of 15°C (59°F) and can reach a steamy maximum of 36°C (97°F), accompanied by high humidity levels of 90%. This summer month also sees considerable precipitation, with around 195 mm (7.7 in) spread across 23 days, resulting in a muggy atmosphere. In contrast, February experiences a much chillier climate, featuring a minimum temperature of -6°C (21°F) and an average of just 4°C (40°F), reaching a maximum of 21°C (69°F). Precipitation drops significantly to 62 mm (2.4 in) over only 10 days, with humidity at a more manageable 74%. This comparison highlights the drastic transition from the sweltering days of August to the crisp winter chill of February. For more information about February weather specifics, check out Hachioji weather in February.
August and March present strikingly different weather patterns. In August, temperatures soar with a minimum of 15°C (59°F) and an average of 26°C (79°F), reaching a maximum of 36°C (97°F). The month is marked by high humidity at 90% and substantial rainfall, totaling 195 mm (7.7 in) over 23 days. In contrast, March offers a cooler climate, with temperatures ranging from a minimum of -4°C (26°F) to a maximum of 23°C (73°F) and an average of 8°C (47°F). While March experiences less precipitation at 166 mm (6.5 in) over 14 days and lower humidity at 70%, it still presents occasional showers. For more detailed information, you can check Hachioji weather in March.
When comparing the weather in April and August, notable differences emerge. April experiences significantly cooler temperatures, with a minimum of -2°C (29°F) and an average of 12°C (54°F), while August boasts higher averages, ranging from a minimum of 15°C (59°F) to a sweltering maximum of 36°C (97°F). Additionally, humidity levels in August are much higher at 90%, contributing to a more oppressive atmosphere, unlike April's relatively comfortable 74%. Precipitation is also higher in August, falling over 23 days and totaling 195 mm (7.7 in), compared to April's 150 mm (5.9 in) over 15 days. For a more detailed look at April's weather, you can visit Hachioji weather in April.
The weather in August is significantly warmer and more humid compared to May. In August, temperatures range from a minimum of 15°C (59°F) to a high of 36°C (97°F), with an average of 26°C (79°F). In contrast, May experiences much cooler temperatures, with a range from 4°C (39°F) to a maximum of 30°C (86°F) and an average of 17°C (64°F). Precipitation is more frequent in August, falling on 23 days and totaling 195 mm (7.7 in), while May has less rainfall at 148 mm (5.8 in) over 15 days. Additionally, humidity in August peaks at 90%, compared to 81% in May, making the summer month feel much more oppressive. For more detailed information, you can check Hachioji weather in May.
When comparing the weather of August and June, August is generally warmer, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 36°C (97°F), averaging 26°C (79°F). In contrast, June presents cooler conditions, with temperatures that range from a minimum of 11°C (52°F) to a maximum of 31°C (88°F), averaging 20°C (69°F). Both months experience significant rainfall, with June having slightly higher precipitation at 209 mm (8.2 in) over 19 days, while August sees 195 mm (7.7 in) across 23 days. The humidity is also notably high in August at 90%, compared to 88% in June. For more detailed weather insights for June, you can check Hachioji weather in June.
When comparing the weather between July and August, we can observe several notable differences. August tends to be slightly warmer, with average temperatures reaching 26°C (79°F) compared to July's 24°C (76°F). The maximum temperature also increases to 36°C (97°F) in August, while July peaks at 35°C (95°F). Despite these warmer conditions, August experiences less precipitation overall, with 195 mm (7.7 in) over 23 days, compared to July's 312 mm (12.3 in) across 24 days. Humidity levels remain high in both months, at 90% in August and 93% in July. For a detailed look at July's weather specifics, you can check Hachioji weather in July.
August exhibits warmer temperatures compared to September, with minimums around 15°C (59°F) and an average of 26°C (79°F), peaking at a maximum of 36°C (97°F). In contrast, September's temperatures range from a minimum of 12°C (53°F) and an average of 22°C (71°F) to a high of 35°C (94°F). Both months experience substantial rainfall, but September sees an increase in precipitation to 247 mm (9.7 in) over 22 days, compared to August's 195 mm (7.7 in) over 23 days. Humidity remains fairly high in both months, but is slightly lower in September at 86%, compared to August's 90%. For more detailed information, you can check Hachioji weather in September.
August and October present stark contrasts in weather conditions. In August, temperatures range from a mild 15°C (59°F) to a scorching 36°C (97°F), with an average of 26°C (79°F). The month is characterized by high humidity, reaching 90%, and significant rainfall, totaling 195 mm (7.7 in) over 23 days. In contrast, October brings much cooler temperatures, with a minimum of 5°C (41°F) and an average of 16°C (61°F), peaking at 30°C (86°F). Although the days are fewer in terms of precipitation at 19 days, October experiences a heavier rainfall total of 346 mm (13.6 in). Despite the differences in temperature and precipitation, October maintains a relatively lower humidity level at 83%. For more information on weather specifics, you can visit Hachioji weather in October.
August and November present stark contrasts in weather. August boasts warm temperatures, ranging from a minimum of 15°C (59°F) to a scorching maximum of 36°C (97°F), with an average of 26°C (79°F). The month is also marked by high humidity at 90% and significant rainfall, totaling 195 mm (7.7 in) across 23 days. In contrast, November ushers in much cooler conditions, with temperatures dipping to a minimum of -1°C (30°F) and peaking at a comfortable 23°C (73°F), averaging around 11°C (52°F). Precipitation significantly decreases to 72 mm (2.8 in) over just 10 days, accompanied by lower humidity at 80%. For more detailed information on November weather, you can refer to Hachioji weather in November.
August and December present starkly contrasting weather conditions. In August, temperatures range from a mild 15°C (59°F) to a scorching 36°C (97°F), with an average of 26°C (79°F). This month is characterized by high humidity at 90% and frequent rainfall, accumulating a total of 195 mm (7.7 in) over approximately 23 days.
Conversely, December sees significantly colder temperatures, with a minimum of -5°C (23°F), an average of 5°C (42°F), and a maximum of 20°C (69°F). Precipitation drops to 62 mm (2.4 in), spread over just 9 days, and humidity decreases to 78%. The seasonal shift from the sweltering heat of August to the chilly air of December highlights the dramatic changes in weather patterns throughout the year. For more specifics, you can explore Hachioji weather in December.
As summer reaches its peak, August in Hachioji offers a stark contrast to other months, characterized by significantly higher temperatures and humidity levels. With average highs around 26°C and record maximums soaring to 36°C, this month embraces the sweltering heat that can feel overwhelming, especially when coupled with a humidity level nearing 90%. Rainfall is also frequent, with nearly 23 days of precipitation contributing to a total of 195 mm, making it one of the wettest months of the year. It's a time when the vibrant energy of summer is palpable, yet the unpredictable weather can lead to spontaneous showers, reminding residents and visitors alike to stay prepared. For more insights into how Hachioji's climate evolves throughout the year, check out Hachioji Climate.