AI-generatedHachiōji at a glance
- Best time
- Apr – Jun, Sep – Nov
- Warmest month
- Aug · 31°
- Sunshine a year
- 1,940 h
- Rain a year
- 1,568 mm
- Climate
- Temperate
- Time zone
- UTC+9
- Elevation
- 127 m
Climate in Hachiōji
Hachiōji has a temperate climate with warm summers and cool winters. August is the warmest month with average highs of 31 °C, while January is the coolest at 10 °C. With around 1,940 hours of sunshine a year, Hachiōji is moderately sunny; January is the sunniest month with 6.4 hours a day.
Holiday weather through the year
Best time to visit Hachiōji
The best time to visit Hachiōji is from April to June and from September to November. In September and October, though, the typhoon season is at its peak: check the forecast before you go. For sightseeing, day trips and hiking, conditions are most comfortable in November. Rain is frequent in March and from July to August; the wettest month is October with 198 mm.
Hachiōji through the seasons
How the weather changes over the seasons, with averages for each.
Hachiōji in spring
Mar – May
Good
- 14–24 °C by day
- 5.8 h of sun a day
- 39 rainy days in all
Hachiōji in summer
Jun – Aug
Fair
- 26–31 °C by day
- 4.7 h of sun a day
- 48 rainy days in all
Hachiōji in autumn
Sep – Nov
Good
- 16–27 °C by day
- 4.5 h of sun a day
- 39 rainy days in all
Hachiōji in winter
Dec – Feb
Fair
- 10–12 °C by day
- 6.2 h of sun a day
- 23 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Nov
15–28 °C and not too much rain
Rainy months
Mar, Jul – Aug
Rainy season or more than 12 rainy days
Snow
Feb
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Hachiōji for you.
Your best months: May, October
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: April – June, September – November
October is the peak of the typhoon season Hurricane season
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 17°
- Midday, 13:00: about 21°
- Afternoon, 16:00: about 20°
- Evening, 20:00: about 17°
- Night, 23:00: about 15°
05:4817:09
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:32–06:22 · evening 16:34–17:24
- Blue hour
- Morning 05:22–05:32 · evening 17:24–17:34
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Hachiōji compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 24° at the start of the month to 19° at the end. The days get 1.0 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 24° | 19° |
| Night-time low | 16° | 10° |
| Daylight | 11.9 h | 10.8 h |
What is the weather like in Hachiōji in October?
In October, Hachiōji is warm: daytime highs average 22 °C, and nights cool down to about 13 °C. Expect around 4.2 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 198 mm in total. All in all, October is a good month for a holiday in Hachiōji.
More details for October
- Daylight
- 11 h 21 min05:48 – 17:09
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 3 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 62 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+9offset from UTC
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %20 %
- Few rainy daysweight 30 %32 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Hachiōji
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
April has the better holiday weather in Hachiōji: score 71 against 64. In April, days are 3 °C cooler than in October. April has one rainy day fewer. The sun shines 2 hours longer a day in April.
| Month | October | April |
|---|---|---|
| Holiday weather score | 64 | 71better |
| Daytime high | 22° | 19° |
| Night-time low | 13° | 8° |
| Sunshine | 4.2 h | 6.0 hbetter |
| Rainy days | 14 | 13better |
| Rainfall | 198 mm | 131 mmbetter |
| Muggy days | 3 | 0better |
Based on the climate averages 1996–2025.
Hachiōji month by month
The typical weather for every month at a glance.
42January10° · 6.4 h
In January, Hachiōji is cold: daytime highs average 10 °C, and nights often drop below freezing (−1 °C). Expect around 6.4 hours of sunshine a day. Rain falls on about 7 days, adding up to 64 mm. Snow falls on about 2 days. All in all, January is a so-so month for a holiday in Hachiōji.
Hachiōji in January43February11° · 6.3 h
In February, Hachiōji is cool: daytime highs average 11 °C, and nights cool down to about 0 °C. Expect around 6.3 hours of sunshine a day. Rain falls on about 9 days, adding up to 66 mm. Snow falls on about 2 days. All in all, February is a so-so month for a holiday in Hachiōji.
Hachiōji in February51March14° · 5.8 h
In March, Hachiōji is cool: daytime highs average 14 °C, and nights cool down to about 3 °C. Expect around 5.8 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 120 mm in total. All in all, March is a so-so month for a holiday in Hachiōji.
Hachiōji in March71April19° · 6.0 h
In April, Hachiōji is mild: daytime highs average 19 °C, and nights cool down to about 8 °C. Expect around 6.0 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 131 mm in total. All in all, April is a good month for a holiday in Hachiōji.
Hachiōji in April69May24° · 5.7 h
In May, Hachiōji is warm: daytime highs average 24 °C, and nights cool down to about 13 °C. Expect around 5.7 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 145 mm in total. All in all, May is a good month for a holiday in Hachiōji.
Hachiōji in May60June26° · 4.1 h
In June, Hachiōji is warm: daytime highs average 26 °C, and nights cool down to about 17 °C. Expect around 4.1 hours of sunshine a day. It rains often – on about 15 days, adding up to 175 mm. The air is often humid and muggy. All in all, June is a good month for a holiday in Hachiōji.
Hachiōji in June41July30° · 4.7 h
In July, Hachiōji is hot: daytime highs average 30 °C, and even at night it stays warm at around 22 °C. Expect around 4.7 hours of sunshine a day. It rains often – on about 17 days, adding up to 184 mm. On about 16 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Hachiōji.
Hachiōji in July38August31° · 5.3 h
In August, Hachiōji is hot: daytime highs average 31 °C, and even at night it stays warm at around 22 °C. Expect around 5.3 hours of sunshine a day. It rains often – on about 16 days, adding up to 139 mm. On about 21 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Hachiōji.
Hachiōji in August60September27° · 4.1 h
In September, Hachiōji is hot: daytime highs average 27 °C, and nights cool down to about 19 °C. Expect around 4.1 hours of sunshine a day. It rains often – on about 15 days, adding up to 190 mm. On about 6 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Hachiōji.
Hachiōji in September64October22° · 4.2 h
In October, Hachiōji is warm: daytime highs average 22 °C, and nights cool down to about 13 °C. Expect around 4.2 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 198 mm in total. All in all, October is a good month for a holiday in Hachiōji.
Hachiōji in October66November16° · 5.2 h
In November, Hachiōji is mild: daytime highs average 16 °C, and nights cool down to about 7 °C. Expect around 5.2 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 93 mm in total. All in all, November is a good month for a holiday in Hachiōji.
Hachiōji in November52December12° · 5.9 h
In December, Hachiōji is cool: daytime highs average 12 °C, and nights cool down to about 2 °C. Expect around 5.9 hours of sunshine a day. Rain falls on about 7 days, adding up to 63 mm. All in all, December is a so-so month for a holiday in Hachiōji.
Hachiōji in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Hachiōji
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- muggy month (15+ muggy days)
CoolOctober: nights around 13°. A duvet at night and a jumper for the evening. Muggy on about 3 days (dew point 18 °C or more).
The coolest nights are in January (−1°), the warmest in August (22°). Tropical nights of 20 °C and more are the rule from July to August; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in June and in September. Nights fall below 8 °C on average from November to March, so the room should be heated. It is muggy (dew point 18 °C or more) on about 98 days a year, mostly from June to September.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 42 | 10° | −1° | 6.4 h | 7 | 64 |
| FebruaryFeb | 43 | 11° | 0° | 6.3 h | 9 | 66 |
| MarchMar | 51 | 14° | 3° | 5.8 h | 13 | 120 |
| AprilApr | 71 | 19° | 8° | 6.0 h | 13 | 131 |
| MayMay | 69 | 24° | 13° | 5.7 h | 13 | 145 |
| JuneJun | 60 | 26° | 17° | 4.1 h | 15 | 175 |
| JulyJul | 41 | 30° | 22° | 4.7 h | 17 | 184 |
| AugustAug | 38 | 31° | 22° | 5.3 h | 16 | 139 |
| SeptemberSep | 60 | 27° | 19° | 4.1 h | 15 | 190 |
| OctoberOct | 64 | 22° | 13° | 4.2 h | 14 | 198 |
| NovemberNov | 66 | 16° | 7° | 5.2 h | 10 | 93 |
| DecemberDec | 52 | 12° | 2° | 5.9 h | 7 | 63 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
35.66° N, 139.32° E · 127 m · Asia/Tokyo
Sunshine
Sunshine hours in Hachiōji
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.2 of 11.3 hours of daylight in Hachiōji, 37 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain
Rain in Hachiōji: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Hachiōji has about 14 rainy days with 198 mm of rain in total.
UV index
UV index in Hachiōji
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 11).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 35 min
- Light brown skin
- about 45 min
- Olive skin
- about 60 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind & clouds
Wind and clouds in Hachiōji
How breezy and how cloudy Hachiōji is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Hachiōji typically peaks at 14 km/h during the day: Beaufort 3, gentle breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 62 % of the sky over Hachiōji: variable cloud, with about 4.2 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat & humidity
Heat and humidity in Hachiōji
How often the day gets hot in Hachiōji (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Hachiōji has about 0 hot days, with an average daytime high of 22 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow
Snow in Hachiōji
Snow is possible in Hachiōji, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Hachiōji.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Hachiōji
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Hachiōji in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Hachiōji has its best school-holiday weather during May half-term (score 67) and its weakest during the summer holidays (score 39).
- 65
Easter holidays
Mar – Apr
Good
- 18 °C by day
- 5.9 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain
- 67
May half-term
May – Jun
GoodBest holidays
- 24 °C by day
- 5.4 h of sun a day
- 14 rainy days a month
- 39
Summer holidays
Jul – Aug
Poor
- 31 °C by day
- 5.1 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain, Storm season
- 64
October half-term
Oct
Good
- 22 °C by day
- 4.2 h of sun a day
- 14 rainy days a month
Keep in mind: Storm season
- 47
Christmas holidays
Dec – Jan
Fair
- 11 °C by day
- 6.2 h of sun a day
- 7 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 12 h
- Distance
- 9,560 km
- Time zone
- UTC+9
- Jet lag
- About 8 days (8 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Good to know: Japan
- Currency
- Japanese Yen (JPY)
- Language
- Japanese
- Sockets
- Type A, B · 100 V
- Traffic
- Drives on the left
- Dialling code
- +81
UK plugs need a travel adapter
Only 100 V: chargers marked 100–240 V work, other devices need a voltage converter.
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Storm season
Hachiōji lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Compare with another place
Hachiōji compared
Put Hachiōji side by side with another destination.
Hachiōji vs Machida
In October the holiday weather in Hachiōji and Machida is about equally good (score 64 vs 64). During the day Machida is 1 °C cooler than Hachiōji.
| in October | Hachiōji | Machida |
|---|---|---|
| Holiday weather score | 64 | 64 |
| Daytime high | 22° | 21° |
| Sunshine | 4 h | 4 h |
| Rainy days | 14 | 13 |
| Best time | Apr – Jun, Sep – Nov | Apr – Jun, Sep – Nov |
Through the year
Best places in the country
Japan in October: the best places
In October, Hachiōji ranks 17 among the 31 nearest destinations in this country.
- Sano22°68
- 2Takasaki22°68
- 3Maebashi22°68
- 4Karuizawa18°68
- 5Kawagoe22°67
- 6Tokyo22°22°65
- 7Yokohama22°22°65
- 8Kawasaki22°22°65
- 17HachiōjiThis page22°64
Places nearby
Near Hachiōji
Other destinations close by.
Places with a similar climate
Places with a climate like Hachiōji
Destinations whose weather through the year is closest to Hachiōji's – good alternatives.
Frequently asked questions about Hachiōji
When is the best time to visit Hachiōji?
The best time to visit Hachiōji is from April to June and from September to November. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Hachiōji?
August is the warmest month, with average highs of 31 °C and nights around 22 °C. January is the coolest month at 10 °C.
When does it rain most in Hachiōji?
Rain is frequent in March and from July to August; the wettest month is October with 198 mm. The driest month is December with 63 mm.
How many hours of sunshine does Hachiōji get?
Hachiōji gets around 1,940 hours of sunshine a year. The sunniest month is January with 6.4 hours a day; in June there are 4.1 hours a day.
What time zone is Hachiōji in?
Hachiōji is on UTC+9 all year.
How long is the flight from London to Hachiōji?
A nonstop flight from London to Hachiōji takes about 12 h, for a straight-line distance of about 9,560 km. Most routes need a change of planes, which adds time.
When is typhoon season in Hachiōji?
Hachiōji lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Hachiōji?
Hachiōji has its best school-holiday weather during May half-term (score 67) and its weakest during the summer holidays (score 39). Holiday ratings (0–100): Easter holidays 65, May half-term 67, summer holidays 39, October half-term 64, Christmas holidays 47.