The best times to visit Hachioji for ideal weather are
April 23rd to July 1st
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Hachioji Travel Guide
Weather in Hachioji
Average temperatures in Hachioji vary drastically. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 32nd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Hachioji, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 90.4°F (32.4°C) with temperatures rarely dropping below 74.8°F (23.8°C) at night.
Hachioji Temperatures (Fahrenheit)
Hachioji Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Hachioji Perceived Temperature (F)
Hachioji Perceived Temperature (C)
Average Hachioji Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Hachioji are January, December, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid June with an average of 3 days of significant precipitation the week of June 11th.
When can you find snow in Hachioji? Weather stations report moderate or seasonal snow likely to be deepest around February, especially close to late February and early March. The best time to ski (if at all) in Hachioji is often around around February 26th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
The graph below shows the % chance of rainy and snowy days in Hachioji.
Snow on the Ground
The graph below shows the average snow on the ground in Hachioji (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Hachioji has some very humid months, with other moderately humid months on the other side of the year. The least humid month is January (43.1% relative humidity), and the most humid month is July (74%).
Wind in Hachioji is usually calm. The windiest month is March, followed by April and May. March’s average wind speed of around 6.3 knots (7.2 MPH or 11.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid March where average top sustained speeds reach 15.6 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Hachioji.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.1||Light breeze||12.6||Significant breeze|
|Feb||5.7||Light breeze||13.3||Significant breeze|
|Mar||6.3||Light breeze||14.8||Significant breeze|
|Apr||6.1||Light breeze||14.7||Significant breeze|
|May||6.1||Light breeze||14.4||Significant breeze|
|Jun||5||Light breeze||12.1||Significant breeze|
|Jul||4.9||Light breeze||11.9||Significant breeze|
|Aug||4.8||Light breeze||11.7||Significant breeze|
|Sep||5.1||Light breeze||12||Significant breeze|
|Oct||4.8||Light breeze||11.1||Significant breeze|
|Nov||3.8||Barely noticeable||10||Significant breeze|
|Dec||4.2||Light breeze||11.2||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Hachioji?
Our best data indicates this area is generally safe, except in a few regions. As of Dec 12, 2018 there are regional travel advisories for Japan; exercise normal security precautions and avoid some areas. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories
The Busiest and Least Crowded Months
The busiest month for tourism in Hachioji, Japan is January, followed by March and April. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Hachioji in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Hachioji Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderate. Highs range from 76.9°F (24.9°C) and 52.3°F (11.3°C) with warmer temperatures in the later months. Rain is somewhat common with 5 to 8 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the most precipitation with 7 to 9 days of precipitation per month. June – August is fairly slow season for tourism in Hachioji, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 84.3°F (29.1°C) and 56.7°F (13.7°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 4 to 9 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is too cold this time of year in Hachioji to be enjoyable for warm weather travelers. The average high during this season is between 55.8°F (13.2°C) and 47.5°F (8.6°C). On average, it rains or snows a smalll amount: 1 to 2 times per month. These times of year are the second busiest with tourists.