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Contents
- The climate of Hachioji
- The best time to visit Hachioji
- The worst time to visit Hachioji
- Spring weather in Hachioji
- Summer weather in Hachioji
- Autumn weather in Hachioji
- Winter weather in Hachioji
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Hachioji
Hachioji, Japan finds itself saddled within the Köppen climate classification as a Humid Subtropical zone with no dry season. Positioned in the eastern part of the country, the weather pattern in Hachioji over the year manifests significant variations in temperature, rainfall, and humidity.
Average monthly temperatures fluctuate from a chilly 2°C (35.6°F) in the coldest month, peaking at 31.9°C (89.4°F) in the warmest. With an extensive range between the two, the city endures changing weather conditions throughout the year. Rainfall, another critical aspect shaping Hachioji's climate, shows its peak during October reaching upto 79mm (3.11"), while December receives the lowest rainfall with 19mm (0.75") on average. This shifting pattern signifies that the city does not encounter a typical dry season.
Humidity in Hachioji sees a marginal variation, with average relative humidity oscillating between 59% to 75%. Sunlight hours, a crucial aspect influencing outdoor activities, also undergo substantial change over the year. December sees the shortest day length at 9.8 hours, while the longest day length extends to 14.5 hours in June.
A distinct trait marking Hachioji’s weather is the negligible snowfall, except for February which receives 33mm (1.3") of snowfall, hinting at mild winters. Meanwhile, except during summers, the cloud cover and pressure maintain a near-steady value throughout the year.
Average monthly temperatures fluctuate from a chilly 2°C (35.6°F) in the coldest month, peaking at 31.9°C (89.4°F) in the warmest. With an extensive range between the two, the city endures changing weather conditions throughout the year. Rainfall, another critical aspect shaping Hachioji's climate, shows its peak during October reaching upto 79mm (3.11"), while December receives the lowest rainfall with 19mm (0.75") on average. This shifting pattern signifies that the city does not encounter a typical dry season.
Humidity in Hachioji sees a marginal variation, with average relative humidity oscillating between 59% to 75%. Sunlight hours, a crucial aspect influencing outdoor activities, also undergo substantial change over the year. December sees the shortest day length at 9.8 hours, while the longest day length extends to 14.5 hours in June.
A distinct trait marking Hachioji’s weather is the negligible snowfall, except for February which receives 33mm (1.3") of snowfall, hinting at mild winters. Meanwhile, except during summers, the cloud cover and pressure maintain a near-steady value throughout the year.
The best time to visit Hachioji
With a climate defined by no dry season, the allure of Hachioji can be experienced at different times of the year. May offers a comfortable weather index with the temperature ranging from 15.8°C (60.4°F) to 23.7°C (74.7°F), and modest rainfall of 47mm (1.85"). These conditions allow visitors to explore the city's nooks and corners without interruption from weather extremes. The day length and sunlight hours also lean towards longer days, which augments sightseeing potential.
June is another equally suitable month with a high temperature of 25.9°C (78.6°F), and prolonged day length of 14.5 hours, the longest across the year. These conditions constitute a comfortable period for outdoor activities and exploring Hachioji’s diverse offerings.
June is another equally suitable month with a high temperature of 25.9°C (78.6°F), and prolonged day length of 14.5 hours, the longest across the year. These conditions constitute a comfortable period for outdoor activities and exploring Hachioji’s diverse offerings.
The worst time to visit Hachioji
In terms of potential inconveniences and travails weather-wise, the period from October to November may not be the best time to visit Hachioji. October records the maximum average rainfall at 79mm (3.11"), followed by September with 74mm (2.91"). Such high precipitation can hamper outdoor sightseeing activities and experiences.
Moreover, July and August, with their highest recorded temperature reaching 30.3°C (86.5°F) and 31.9°C (89.4°F), may prove uncomfortable for those unaccustomed to such warmth. These months, especially coupled with high humidity, might necessitate frequent retreats into air-conditioned spaces.
Moreover, July and August, with their highest recorded temperature reaching 30.3°C (86.5°F) and 31.9°C (89.4°F), may prove uncomfortable for those unaccustomed to such warmth. These months, especially coupled with high humidity, might necessitate frequent retreats into air-conditioned spaces.
Spring weather in Hachioji
The spring season in Hachioji spans from March to May. During this period, temperatures see an upward trend from 5.4°C (41.7°F) to 23.7°C (74.7°F). Rainfall figures also surge, moving from 40mm (1.57") in March to 50mm (1.97") in April, and stabilizing at 47mm (1.85") in May.
Visitors during this season can experience the full bloom of cherry blossoms and other spring flowers, making it a picturesque time of the year. Day lengths begin to elongate, with daylight hours stretching from 12 hours in March to 14 hours in May.
Visitors during this season can experience the full bloom of cherry blossoms and other spring flowers, making it a picturesque time of the year. Day lengths begin to elongate, with daylight hours stretching from 12 hours in March to 14 hours in May.
Summer weather in Hachioji
Summers in Hachioji, extending from June to August, can get quite hot, with temperatures peaking at 31.9°C (89.4°F). The period also marks the year's highest humidity levels and substantial rainfall, with August witnessing 53mm (2.09"). Yet, it also affords the longest day length, reaching 14.5 hours in June. It gives ample opportunity to immerse oneself fully in the vibrant, summer-time ambiance of Hachioji.
Autumn weather in Hachioji
Autumn graces Hachioji from September to November. Temperatures start to dip, moving from a maximum of 27.5°C (81.5°F) in September to 16.2°C (61.2°F) by November. Rainfall records are high in these months, reaching the year's peak in October with 79mm (3.11").
Yet autumn remains a beautiful time to visit with the changing colors of leaves painting a breathtaking picture across the city. The day length steadily declines, shrinking from 12.4 hours in September to about 10.3 hours by November.
Yet autumn remains a beautiful time to visit with the changing colors of leaves painting a breathtaking picture across the city. The day length steadily declines, shrinking from 12.4 hours in September to about 10.3 hours by November.
Winter weather in Hachioji
Winter in Hachioji sees temperatures drop to its year-long lows, sinking to 2°C (35.6°F) in January. The months from December to February also mark lower rainfall figures, with December receiving the least amount of rain at 19mm (0.75"). Snowfall remains a rarity, except in February, which sees 33mm (1.3") of snow.
While days are the shortest during these months, ample sunshine and lower humidity levels make winter a pleasant season for those fond of cooler climates. Winter in Hachioji may not be bitterly cold, but it does offer its own warm charm to visitors.
While days are the shortest during these months, ample sunshine and lower humidity levels make winter a pleasant season for those fond of cooler climates. Winter in Hachioji may not be bitterly cold, but it does offer its own warm charm to visitors.
Weather in January
The chilly period of the year in Hachioji, Japan begins in January with average day temperatures around 8.5°C (47.3°F). During this period, locals and tourists can expect cooler nights, while the coat-clad daytime offers a moderate relief from the cold. Weather in January »
Weather in February
February sees a noticeable change in Hachioji's weather as temperatures slightly rise to an average of 9.5°C (49.1°F) during the day. The increase in snowfall from 8mm (0.31") to 33mm (1.3") offers a beautiful scenery, proving to be quite an attraction, especially for those seeking winter landscapes. Weather in February »
Weather in March
March signals the end of winter with a warm welcome to spring as temperatures start to ascend to a comfortable 13.3°C (55.9°F). The decrease in snowfall from 33mm (1.3") to 2mm (0.08") brings about a much-needed ease from the extreme cold of the previous months. Weather in March »
Weather in April
In April, Hachioji begins to settle into the full swing of spring with temperatures hiking up to 17.8°C (64°F). The city experiences the first month of the year without snowfall; a clear sign that the cold winter months have passed. Weather in April »
Weather in May
The temperate, comfortable weather of Hachioji in May is quite appealing with day temperatures rising to around 23.7°C (74.7°F). The rainfall amount increases remarkably to 47mm (1.85"), signaling the onset of the wet season. May proves to be an ideal period for intense outdoor activities, owing to the perfect blend of warmth and coolness. Weather in May »
Weather in June
With the arrival of June, Hachioji, Japan experiences the warmth of early summer with temperatures reaching 25.9°C (78.6°F). The rainfall increases, reaching the highest amount for the year at 73mm (2.87"). The long, warm days are balanced by the cool, light breezes of the early evening hours. Weather in June »
Weather in July
July is the highlight of summer in Hachioji with the highest annual temperature hitting an average of 30.3°C (86.5°F). Long, hot days are the dominant feature, with the maximum daylight hours being observed. July's weather is a mirror of peak summer, with high humidity and heat defining the majority of the days. Weather in July »
Weather in August
The weather remains hot in August with the maximum average temperatures warming up to approximately 31.9°C (89.4°F). The city is enveloped in warmth, with long and sunny days. Despite the high temperatures, rainfall slightly reduces from 64mm (2.52") to 53mm (2.09") in comparison to July. Weather in August »
Weather in September
September sees a transition from summer to fall in Hachioji as temperatures start to cool down to an average of 27.5°C (81.5°F). The month ushers in higher rainfall levels at 74mm (2.91"), marking the peak of the rainy season. Weather in September »
Weather in October
October in Hachioji witnesses a significant drop in temperature to 21.6°C (70.9°F), signifying the progression of autumn. The rainfall begins to descend, reducing to 79mm (3.11"), a call for the upcoming dry period. Lightweight clothing and rain jackets make up most wardrobes during this period due to the variable weather conditions. Weather in October »
Weather in November
In November, the temperatures decline sharply to 16.2°C (61.2°F), marking the city’s move into the winter season. The scenery undergoes another transformation as the winter chill starts to take hold. The city, preparing itself for winter, witnesses a significant decline in the rainfall, dropping to 36mm (1.42"). Weather in November »
Weather in December
December welcomes winter with an estimated average temperature of 10.6°C (51.1°F) and a significant drop in rainfall to 19mm (0.75"). Snowfall appears once again, adding a wintry charm to Hachioji’s landscape. The visibility remains optimal despite the shift in temperatures, making it a good time for winter sightseeing. Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Hachioji?
In Hachioji, January is known for its average lowest temperatures, reaching a high of 8.5°C (47.3°F) and a low of 2°C (35.6°F).
What is the least humid month in Hachioji?
The least humid month is January, with an average relative humidity of 59%.
How much does it rain in Hachioji?
In Hachioji, during the entire year, the rain falls for 138 days and collects up to 580mm (22.83") of precipitation.
When does it snow in Hachioji?
Months with snowfall in Hachioji are January through March and November.
How many days does it snow in Hachioji?
In Hachioji, Japan, during the entire year, snow falls for 2.8 days and aggregates up to 47mm (1.85") of snow.
When is the lowest UV index in Hachioji?
The month with the lowest UV index in Hachioji is January, with an average maximum UV index of 2.
When does it snow the most in Hachioji?
The month with the most snowfall in Hachioji, Japan, is February, when snow falls for 1.8 days and typically aggregates up to 33mm (1.3") of snow.
What is the month with the least sunshine in Hachioji?
With an average of 6h of sunshine, February has the least sunshine of the year in Hachioji.
When it does not snow in Hachioji?
April through October and December are months without snowfall in Hachioji.
When are the longest days in Hachioji?
With an average of 14h and 30min of daylight, June has the longest days of the year.
What is the most humid month in Hachioji?
July is the most humid month in Hachioji, with an average relative humidity of 75%.
What is the month with the highest UV index in Hachioji?
With an average maximum UV index of 7, July is the month with the highest UV index in Hachioji.
What part of the year is the hottest in Hachioji?
With average high temperatures of 31.9°C (89.4°F) and lows of 24.9°C (76.8°F), August is the warmest month.
What month has the most sunshine in Hachioji?
August has the most sunshine of the year in Hachioji, Japan, with an average of 10.1h of sunshine.
What is the wettest month in Hachioji?
The month with the most rainfall in Hachioji is October, when the rain falls for 14.5 days and typically aggregates up to 79mm (3.11") of precipitation.
What is the driest month in Hachioji?
The month with the least rainfall is December, when the rain falls for 6.2 days and typically collects 19mm (0.75") of precipitation.
What is the month with the shortest days in Hachioji?
The month with the shortest days in Hachioji is December, with an average of 9h and 48min of daylight.
Is there Daylight Saving Time (DST) in Hachioji?
Hachioji, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Hachioji, Japan
The warmest month (with the highest average high temperature) is August (31.9°C).
The month with the lowest average high temperature is January (8.5°C).
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure
Hachioji, Japan
- Average pressure in January:
1016.4mbar - Average pressure in February:
1017.3mbar - Average pressure in March:
1015.6mbar - Average pressure in April:
1014.3mbar - Average pressure in May:
1012mbar - Average pressure in June:
1009.2mbar
- Average pressure in July:
1009.8mbar - Average pressure in August:
1010.3mbar - Average pressure in September:
1013.6mbar - Average pressure in October:
1016.8mbar - Average pressure in November:
1018.2mbar - Average pressure in December:
1016.4mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed
Hachioji, Japan
- Average wind speed in January:
11.8km/h - Average wind speed in February:
12.1km/h - Average wind speed in March:
12.3km/h - Average wind speed in April:
12.6km/h - Average wind speed in May:
11.4km/h - Average wind speed in June:
10.3km/h
- Average wind speed in July:
10.2km/h - Average wind speed in August:
10.1km/h - Average wind speed in September:
10km/h - Average wind speed in October:
11km/h - Average wind speed in November:
9.7km/h - Average wind speed in December:
11km/h
The windiest month (with the highest average wind speed) is April (12.6km/h).
The calmest month (with the lowest average wind speed) is November (9.7km/h).
Average humidity
Hachioji, Japan
The month with the highest relative humidity is July (75%).
The month with the lowest relative humidity is January (59%).
Average rainfall
Hachioji, Japan
The wettest month (with the highest rainfall) is October (79mm).
The driest month (with the least rainfall) is December (19mm).
Average rainfall days
Hachioji, Japan
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
12.4 days - Average rainfall days in April:
13 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
15.7 days
- Average rainfall days in July:
14.9 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
14 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
9.2 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is January (4.1 days).
Average snowfall
Hachioji, Japan
The month with the highest snowfall is February (33mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days
Hachioji, Japan
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
1.8 days - Average snowfall days in March:
0.3 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.1 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight / Average sunshine
Hachioji, Japan
- Average daylight in January:
10h and 1min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 3min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 4min - Average sunshine in February:
6h and 0min - Average sunshine in March:
7h and 0min - Average sunshine in April:
9h and 1min - Average sunshine in May:
9h and 3min - Average sunshine in June:
8h and 4min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
7h and 5min - Average sunshine in October:
6h and 4min - Average sunshine in November:
6h and 1min - Average sunshine in December:
6h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days
Hachioji, Japan
- Average sunshine days in January:
26 days - Average sunshine days in February:
18.7 days - Average sunshine days in March:
17.2 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
16.8 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
12.6 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
19.1 days - Average sunshine days in December:
24.3 days
The month with the most sunshine days is January (26 days).
The month with the least sunshine days is June (11.9 days).
Average UV index
Hachioji, Japan
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover
Hachioji, Japan
The months with the most cloud cover are June and October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility
Hachioji, Japan
The months with the highest visibility are January, February, March, April, May, August, October, November and December (10km).
The months with the lowest visibility are June, July and September (9km).
Hachioji, Japan
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