I was so happy to join a day tour for the first time. Our tour guide, Jiajia, spoke in three languages and took turns to guide us. She was really hardworking and professional, and she shared everything she knew without reservation. I was so happy to have her lead the way 😊 The itinerary, including Noboribetsu Jigokudani (Hell Valley), Cape Chikyu (Cape Chikyu), the Usuyama Ropeway, the Lake Toya Observatory, and Meisui Park, was all perfectly timed!
Anonymous User
Couple
Mount Yari Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Mount Yari year round climate
Spring (March–May): Average 2.6–11.9°C, with fluctuating temperatures and moderate rainfall. Common activities: Hiking, enjoying volcanic views. Recommended clothing: Warm jacket, comfortable and breathable clothing, and rain gear.
Summer (June–August): Average 16.0–22.8°C, warm and humid with higher rainfall, especially in August. Common activities: Onsen (hot spring) bathing, enjoying lakeside scenery. Recommended clothing: Light and breathable clothing and rain gear.
Autumn (September–November): Average 13.8–20.0°C, pleasant and comfortable with decreasing rainfall. Common activities: Viewing autumn leaves, hiking. Recommended clothing: Light jacket and long-sleeved shirt.
Winter (December–February): Average -1.7–-0.2°C, cold and dry with low chance of snowfall. Common activities: Skiing (depending on snow conditions), onsen bathing. Recommended clothing: Heavy warm clothing, waterproof jacket, hat, gloves, and scarf.
Mount Yari climatological average
Annual average temperature: approx. 9.7°C / Annual rainfall: approx. 1146 mm / Summer humidity: 70%–80% / Rainiest month: August
Mount Yari monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-1.7°C
62.5
February
-1.2°C
29.6
March
2.6°C
53.2
April
8.1°C
53.1
May
11.9°C
66.8
June
16°C
149.2
July
21.4°C
116.1
August
22.8°C
218.8
September
20°C
166.8
October
13.8°C
118.4
November
7.2°C
73.2
December
-0.2°C
38.6
Mount Yari weather for the next seven days
6/23
Tuesday
Patchy rain nearby
13.9°C/12.3°C
6/24
Wednesday
Partly Cloudy
17.1°C/11.6°C
6/25
Thursday
Sunny
18.9°C/11.3°C
6/26
Friday
Moderate rain
17.9°C/14.8°C
6/27
Saturday
Patchy rain nearby
20.4°C/13.4°C
6/28
Sunday
Moderate rain
17.9°C/12.7°C
6/29
Monday
Patchy rain nearby
20.7°C/15.4°C
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