After gathering, the guided tour was very well-organized, not only delving into popular attractions but also including some lesser-known but unique places, making the overall trip more in-depth. The crowds weren't too large, and the guide was very enthusiastic and knowledgeable, providing detailed explanations while also offering interactive tips and photo suggestions, creating a relaxed and enjoyable atmosphere for the whole group. Transportation was also smooth; minor traffic jams were manageable, and the driver's steady driving skills were impressive. The autumn leaves were stunning, and the overall pace allowed us to fully immerse ourselves in the spiritual atmosphere of Mount Koya. Even without visiting the Ryouji-in Temple in full bloom, the approach was still beautiful. The two-kilometer walk along the ancient trees and tranquil atmosphere was very pleasant. The entire approach was not only solemn but also possessed a timeless tranquility, making you want to slow down. Being able to breathe deeply here, feel the wind, and hear the falling leaves was truly therapeutic. The Nibutsuhime Shrine along the way, although small, was designed for a comfortable pace, avoiding any rushing. The guided tour was also rich and easy to understand, allowing me to experience the cultural depth much better than if I had wandered around on my own. There was a minor hiccup along the way, but thank you to the tour guide for resolving it smoothly. Overall, I highly recommend it.
Anonymous User
Couple
Koyasan Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Koyasan year round climate
Spring (March–May): Average 10.6–18.6°C, mild and comfortable climate, but with relatively high rainfall, especially in May. Common activities: Visiting Koyasan temples, hiking (be aware of changing weather conditions). Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
Summer (June–August): Average 22.6–28.7°C, hot and humid, with occasional showers. Common activities: Visiting temples, experiencing local culture, escaping the heat in the mountains. Recommended clothing: Breathable and sweat-wicking clothing, sun hat, rain gear.
Autumn (September–November): Average 15.7–27.0°C, comfortable and pleasant climate, with reduced rainfall. Common activities: Autumn leaves viewing (in some areas), visiting temples, hiking. Recommended clothing: Light jacket, long-sleeved shirt.
Winter (December–February): Average 7.2–9.8°C, cold and dry, with little rain. Common activities: Visiting temples, experiencing onsen (in nearby areas). Recommended clothing: Warm jacket, sweater, scarf, gloves.
Koyasan climatological average
Annual average temperature: approx. 17.6°C / Annual rainfall: approx. 1794 mm / Summer humidity: 70%–80% / Rainiest month: May
Koyasan monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
7.2°C
63.9
February
7.2°C
59.2
March
10.6°C
113.6
April
15.4°C
163.5
May
18.6°C
313.2
June
22.6°C
285.1
July
27.4°C
200.3
August
28.7°C
130.6
September
27°C
161.5
October
20.5°C
141
November
15.7°C
101.2
December
9.8°C
61.5
Koyasan weather for the next seven days
12/31
Wednesday
Sunny
7.3°C/-1.9°C
1/1
Thursday
Light freezing rain
5.1°C/-2.5°C
1/2
Friday
Light snow showers
2.6°C/-3.9°C
1/3
Saturday
Moderate or heavy snow showers
4.1°C/-4.7°C
1/4
Sunday
Moderate rain
6.5°C/-0.9°C
1/5
Monday
Moderate or heavy snow showers
4.2°C/-3.7°C
1/6
Tuesday
Patchy rain nearby
5.1°C/-3.9°C
KKday App
Your Best Travel Buddy
Use the code APP5OFF to enjoy an exclusive in-app deal of 5% off (cap at USD$3) on your 1st orderScan here to download the app