I joined a tour led by Xiao Mao on November 10, 2025. The entire trip was perfectly planned and is perfect for families and friends to travel together! Everyone in the group was also very helpful, and everyone returned to the meeting point on time, making the whole trip very smooth!
The pass is cheaper than the round-trip bus fare to Shiraito Falls. They're also running a 50% discount on JCB touch payment, so if you have that card, use touch payment; otherwise, use the pass. Please note that the pass website occasionally displays errors (fortunately, I was able to successfully display the screen on my companion's phone... ㅡㅡ)
The bus stop is clearly marked, making it easy to find the right time to depart. It's also very close to Karuizawa Outlet.
Anonymous User
Solo traveler
Karuizawa Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Karuizawa year round climate
Spring (March–May): Average 2.9–12.4°C, mild and comfortable climate, but with a large temperature difference between morning and evening, occasional showers. Cherry blossoms bloom in some areas in March and April. Common activities: Cherry blossom viewing, hiking, cycling. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 17.0–21.8°C, cool and comfortable climate, a summer resort, but with more rainfall in June and July. Common activities: Outdoor activities, camping, visiting Karuizawa attractions. Recommended clothing: Light and breathable clothing, rain gear.
Autumn (September–November): Average 11.1–19.4°C, pleasant climate, colorful autumn leaves are a major feature of autumn, rainfall gradually decreases. Common activities: Maple leaf viewing, hiking, hot springs. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -2.8–-0.2°C, cold climate, less snowfall. Common activities: Skiing (requires going to nearby areas), enjoying the quiet snow scenery. Recommended clothing: Warm coat, hat, scarf, gloves.
Karuizawa climatological average
Annual average temperature: approx. 9.3°C / Annual rainfall: approx. 1270 mm / Summer humidity: 70%–80% / Rainiest month: June
Karuizawa monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-2.8°C
10.7
February
-2°C
47.2
March
2.9°C
91
April
9.2°C
116.5
May
12.4°C
158.8
June
17°C
197.6
July
21.7°C
174.5
August
21.8°C
131.8
September
19.4°C
154.3
October
11.1°C
103.2
November
5.9°C
70.6
December
-0.2°C
14
Karuizawa weather for the next seven days
12/20
Saturday
Patchy rain nearby
11°C/1.9°C
12/21
Sunday
Moderate rain
9.9°C/1.9°C
12/22
Monday
Light freezing rain
-0.7°C/-4.6°C
12/23
Tuesday
Sunny
0.5°C/-6.1°C
12/24
Wednesday
Moderate snow
2.6°C/-3°C
12/25
Thursday
Mist
1.9°C/0.6°C
12/26
Friday
Light freezing rain
-1.2°C/-5.8°C
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