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White stupa surrounded by trees and stone monuments at Takaosan Yakuo-in temple

Photo: Stupa, Takaosan Yakuo-in temple, Tokyo - Apr 12, 2013.jpg by Aapo Haapanen (CC BY 2.0, cropped), via Wikimedia Commons.

Mount Takao in April: weather, what to wear and what's on

Mount Takao has no JMA station. The figures here come from the JMA's Hachioji station (123 m above sea level). The summit is 599 m high, 476 m higher than the station. In April, Hachioji averages a high of 19.1°C (66°F) and a low of 7.7°C (46°F), with 114.1 mm of rain on about 9.2 days (JMA, 1991–2020).

Mount Takao weather in April

Averages for 1991–2020 at the JMA's Hachioji station (123 m above sea level).

High
19.1°C (66°F)
Low
7.7°C (46°F)
Precipitation
114.1 mm
Wet days
9.2 days
Sunshine
179 hours
  • Highs rise 5.4°C from March and climb another 4.5°C into May.
  • That is 0.9°C below Hachioji's yearly average high of 20.0°C.
  • Of our 34 places with temperature records, Hachioji is the 16th warmest in April: 0.3°C cooler than Ise and 0.2°C warmer than Yokohama.
  • April is Hachioji's 6th driest month (114.1 mm).
  • Of our 35 places, Hachioji has the 14th lowest precipitation in April: 2.9 mm less than Kyoto and 2.3 mm more than Tokyo Disney Resort.
  • Rain of 1 mm or more falls on 9.2 days, and 10 mm or more on 3.4 days.
  • Rain of 30 mm or more in one day falls on 1.0 days.
  • The sun is out for 40% or more of the possible hours on 17.2 days, and 6.2 days have under 0.1 hours of sunshine.
Average temperature
13.3°C (56°F)
Days of 25°C or more
2.4 days

Early, mid and late April

Hachioji in April by ten-day period: averages for 1991–2020 (JMA)
DaysHighLowPrecipitation
1–10 April17.3°C5.8°C41.4 mm
11–20 April19.1°C7.9°C43.5 mm
21–30 April20.9°C9.5°C29.3 mm

By the last ten days of April the average high in Hachioji is 3.6°C higher than in the first ten.

By ten-day totals, 11–20 April is the wettest (43.5 mm) and 21–30 April the driest (29.3 mm).

What to wear on Mount Takao in April

Cool: highs around 19.1°C

This is for Hachioji (123 m above sea level).

  • Long sleeves with a light jacket or sweater.
  • Layers you can take off: afternoons are 11.4°C warmer than early mornings on average.
  • A folding umbrella: rain falls on 9.2 days.

Pack

  • Folding umbrella

Holidays and crowds in April

National holidays in April 2027:

  • Thu 29 April — Showa Day

In April 2025, hotels and inns across Tokyo were 79.4% full on average (3rd busiest of 12 months). Foreign guests spent 5.61 million nights there that month (Japan Tourism Agency). That compares with 76.3% in March and 77.5% in May.

Frequently asked questions

What is the weather like on Mount Takao in April?

The average high is 19.1°C (66°F) and the average low 7.7°C (46°F). 114.1 mm of rain falls on about 9.2 days (JMA, 1991–2020).

What should I wear on Mount Takao in April?

Long sleeves with a light jacket or sweater. Layers you can take off: afternoons are 11.4°C warmer than early mornings on average. A folding umbrella: rain falls on 9.2 days.

Is Mount Takao busy in April?

In April 2025, hotels and inns across Tokyo were 79.4% full on average (3rd busiest of 12 months). Foreign guests spent 5.61 million nights there that month (Japan Tourism Agency).

What are the record temperatures for April on Mount Takao?

The highest temperature the JMA has recorded in Hachioji in April is 32.2°C (90°F), on 29 April 2005. The lowest is −2.0°C (28°F), on 1 April 2001.

What events are on on Mount Takao in April?

Flower Festival (Buddha's Birthday): 8 April. Waterfall Opening (Taki-biraki): 1 April (2026 calendar). Spring Grand Festival (Chigo Renko procession): Mid-to-late April (19 April in 2026).

April records on Mount Takao

The extremes the JMA has measured in April at its Hachioji station.

Hottest April day
32.2°C (90°F) on 29 April 2005 (records since 1977)
Coldest April night
−2.0°C (28°F) on 1 April 2001 (records since 1977)
Wettest April day
115.0 mm on 18 April 2020 (records since 1976)

What's on on Mount Takao in April

Events on Mount Takao in April: dates from each organizer's official page
EventWhenWhere and what
Flower Festival (Buddha's Birthday)花まつり8 AprilBuddha relics pagoda (Busshari-to), Takao-san. Hana Matsuri listed on the Yakuo-in annual calendar on 8 April. Official page
Waterfall Opening (Taki-biraki)滝びらき1 April (2026 calendar)Kiyotaki, Biwa-no-taki and Hebi-daki waterfalls. The waterfall opening is held at three waterfalls on 1 April 2026 according to the annual calendar. Official page
Spring Grand Festival (Chigo Renko procession)春季大祭(稚児練行)Mid-to-late April (19 April in 2026)Yakuo-in. The Spring Grand Festival with a Chigo Renko is held at Yakuo-in on 19 April 2026 according to the annual calendar. Official page

Mount Takao before and after April

Hachioji: March, April and May (JMA, 1991–2020)
MonthHighLowPrecipitationWet days
March13.7°C (−5.4°C)2.7°C (−5.0°C)102.9 mm (−11.2 mm)9.2 days (same)
April19.1°C7.7°C114.1 mm9.2 days
May23.6°C (+4.5°C)12.9°C (+5.2°C)124.7 mm (+10.6 mm)10.0 days (+0.8 days)

Other places in April

April: Hachioji against five other places (JMA, 1991–2020)
PlaceHighAgainst HachiojiWet daysAgainst Hachioji
Tokyo19.4°C+0.3°C9.5 days+0.3 days
Yokohama18.9°C−0.2°C9.5 days+0.3 days
Tokyo Disney ResortEdogawa-Rinkai18.0°C−1.1°C9.7 days+0.5 days
Mount FujiKawaguchiko16.1°C−3.0°C8.5 days−0.7 days
Karuizawa14.3°C−4.8°C8.9 days−0.3 days

Read more

Sources for this page

  1. Normals for 1991–2020: Hachioji (八王子), month by month (平年値 年・月ごとの値)Japan Meteorological Agency (JMA)
  2. Normals for 1991–2020: Hachioji (八王子), rain days, temperature days and snow (詳細)Japan Meteorological Agency (JMA)
  3. Ten-day normals for 1991–2020: Hachioji (八王子) (平年値 旬ごとの値)Japan Meteorological Agency (JMA)
  4. Records for April: Hachioji (八王子) (観測史上1〜10位の値)Japan Meteorological Agency (JMA)
  5. Mount Takao (Takaosan)Hachioji Visitors & Convention Association
  6. National holidays (国民の祝日について)Cabinet Office
  7. Overnight Travel Statistics Survey, 2025 final figures (宿泊旅行統計調査 2025年 年の確定値)Japan Tourism Agency
  8. Flower Festival (Buddha's Birthday) (花まつり)Takaosan Yakuo-in