Kansai Weather Guide

Koyasan Weather & What to Wear

Koyasan, Okunoin, Danjo Garan

A sacred center of Shingon Buddhism on a mountaintop about 800 m above sea level. With 117 temples, it's a place where you can stay overnight at a temple lodging (shukubo). Temperatures are about 5°C lower than in Kyoto: summers are cool, while in winter many days drop below 0°C and snow falls.

January low
−4.0℃
August high
27.8℃
Max snow depth
—
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Forecast

Forecast: Today & the Next 7 Days

JMA forecast issued Oct 22, 11 AM

Every 3 Hours: Today & Tomorrow

  1. Today
    3 PM
    Sunny
    ☂ 0%
    6–9m/s
  2. 6 PM
    Sunny
    ☂ 0%
    6–9m/s
  3. 9 PM
    Sunny
    ☂ 0%
    6–9m/s
  4. Tomorrow
    12 AM
    Sunny
    ☂ 0%
    6–9m/s
  5. 3 AM
    Sunny
    ☂ 0%
    6–9m/s
  6. 6 AM
    Sunny
    ☂ 0%
    6–9m/s
  7. 9 AM
    Sunny
    ☂ 0%
    6–9m/s
  8. 12 PM
    Cloudy
    ☂ 10%
    6–9m/s
  9. 3 PM
    Cloudy
    ☂ 10%
    6–9m/s
  10. 6 PM
    Cloudy
    ☂ 60%
    6–9m/s
  11. 9 PM
    Rain
    ☂ 60%
    6–9m/s

Weather and wind are for the wider area; temperature is for the main forecast point. Chance of rain is for the 6-hour period. There is no 3-hourly temperature forecast for this area, so temperatures are not shown.

  1. Today
    10/22(Thu)
    Sunny
    ☂ 0%
  2. Tomorrow
    10/23(Fri)
    Sunny, then rain
    ☂ 60%
  3.  
    10/24(Sat)
    Rain
    ☂ 80%
  4.  
    10/25(Sun)
    Cloudy, brief rain
    ☂ 70%
    Reliability B
  5.  
    10/26(Mon)
    Cloudy, rain at times
    ☂ 60%
    Reliability B
  6.  
    10/27(Tue)
    Cloudy, brief rain
    ☂ 60%
    Reliability B
  7.  
    10/28(Wed)
    Sunny, cloudy at times
    ☂ 20%
    Reliability A
  • ☂ Chance of rain
  • From day 3, the weekly forecast covers a wider prefecture-level area.
  • Reliability of the weekly forecast (A: high, B: fairly high, C: fairly low)
  • There is no temperature forecast point for this area, so temperatures are not shown.
  • Source: Japan Meteorological Agency (weather forecast)
Best Season

Best Time to Visit Koyasan

For autumn leaves

The colors peak from late October to early November, 2–3 weeks earlier than in Kyoto.

To escape the summer heat

Even in midsummer, highs are only about 27–28°C. Mornings and evenings are cool — a lovely season for walks among the towering cedars.

Climate

Koyasan Temperature & Snow Through the Year

Monthly high / low temperature (°C)

HighLow
-10-5051015202530JanFebMarAprMayJunJulAugSepOctNovDec27.8℃−4.0℃Jan High 3.4℃ / Low −4.0℃Feb High 4.8℃ / Low −3.8℃Mar High 9.2℃ / Low −1.0℃Apr High 15.1℃ / Low 3.7℃May High 20.1℃ / Low 8.9℃Jun High 22.8℃ / Low 14.0℃Jul High 26.6℃ / Low 18.4℃Aug High 27.8℃ / Low 18.8℃Sep High 23.7℃ / Low 15.3℃Oct High 17.8℃ / Low 9.1℃Nov High 12.2℃ / Low 3.0℃Dec High 6.3℃ / Low −1.6℃
Month by Month

Month-by-Month Weather & What to Wear

MonthHighLowPrecip.Max snow depthWhat to wear
Jan3.4℃−4.0℃87.6mm—Winter coatDown or heavy coat, gloves
Feb4.8℃−3.8℃97.4mm—Winter coatDown or heavy coat, gloves
Mar9.2℃−1.0℃141.7mm—Warm jacketLight down or winter coat, sweater
Apr15.1℃3.7℃141.5mm—Long sleeves + jacketLong sleeves with a light jacket or hoodie
May20.1℃8.9℃166.6mm—T-shirt + layerT-shirt, plus light long sleeves for mornings and evenings
Jun22.8℃14.0℃260.3mm—T-shirt + layerT-shirt, plus light long sleeves for mornings and evenings
Jul26.6℃18.4℃256.4mm—T-shirtT-shirt, with a light layer for evenings and air conditioning
Aug27.8℃18.8℃192.5mm—T-shirtT-shirt, with a light layer for evenings and air conditioning
Sep23.7℃15.3℃247.5mm—T-shirt + layerT-shirt, plus light long sleeves for mornings and evenings
Oct17.8℃9.1℃203.3mm—Long sleeves + jacketLong sleeves with a light jacket or hoodie
Nov12.2℃3.0℃108.4mm—Warm jacketLight down or winter coat, sweater
Dec6.3℃−1.6℃89.3mm—Winter coatDown or heavy coat, gloves

Clothing tips are based on the normal high temperature and snow depth. Bring an extra layer for mornings and evenings.

Where to Stay · Agoda

Places to Stay near KoyasanPR

Prices and availability are shown on Agoda.

Seasons

Koyasan Through the Seasons

🌸

Spring

Mar–May

Cherry blossoms around late April. Even in April, mornings are around 4°C, so you'll need a winter jacket.

☀️

Summer

Jun–Aug

Highs of 27–28°C make it Kansai's summer retreat. On August 13, the Mando Kuyoe (Candle Festival) is held at Okunoin.

🍁

Autumn

Sep–Nov

Autumn leaves peak from late October to early November. November mornings drop to around 3°C.

❄️

Winter

Dec–Feb

Highs of 3–6°C, with mornings around -4°C. Snow can settle and roads can freeze, so watch your step.

Events

Events & festivals in Koyasan

August

Koyasan Candle Festival (Mando Kuyo-e)

Kansai ・ Koyasan

Every year on August 13 (the candle festival runs from evening into the night; the Mando Kuyo-e memorial service starts at 20:00)

2027: Aug 13 (held every year on August 13)

Travel Passes

Travel passes you can use in Koyasan

🚄 JR

Japan Rail Pass

Nationwide ・ Three types: 7, 14 or 21 days. The period of use cannot be extended or changed

From ¥50,000

Plan Your Trip

Plan Your Koyasan TripPR

Other Areas

Weather in Other Areas

Back to the Kansai Weather Guide (all months & areas) →

Source: Japan Meteorological Agency (climate normals 1991-2020). Compiled by tripuuu.log. Temperature and snow figures are normals from the Koyasan station; actual weather varies from year to year.