This travel pass is a great deal! The round trip to Karuizawa plus a reserved seat on the NEX train back to Narita Airport is well worth the price. It also allows unlimited access to JR stations, so you don't have to worry about getting around. 😜 Very convenient!
Anonymous User
Family
Kitasaku Karuizawa Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Kitasaku Karuizawa year round climate
Spring (March–May): Average 11.5–19.3°C, mild climate but with relatively high rainfall, especially in March and April. Common activities: flower viewing, hiking, walking. Recommended clothing: light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 23.1–28.4°C, hot and humid, with more rainfall in June and August. Common activities: outdoor swimming, camping, mountain climbing. Recommended clothing: light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 19.3–14.8°C, comfortable and pleasant climate, cool and dry. Common activities: viewing autumn leaves, hiking, cycling. Recommended clothing: light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average 9.1–7.4°C, cold and dry, with low rainfall. Common activities: skiing, hot springs, indoor leisure activities. Recommended clothing: warm jacket, hat, gloves, scarf.
Kitasaku Karuizawa climatological average
Annual average temperature: approx. 17.5°C / Annual rainfall: approx. 1659 mm / Summer humidity: 70%–80% / Rainiest month: June
Kitasaku Karuizawa monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
6.6°C
26.2
February
7.4°C
71
March
11.5°C
169.3
April
16.3°C
159.6
May
19.3°C
203.3
June
23.1°C
231.1
July
28°C
120.3
August
28.4°C
225.4
September
26.1°C
206
October
19.3°C
127
November
14.8°C
87.7
December
9.1°C
32.4
Kitasaku Karuizawa weather for the next seven days
7/19
Sunday
Partly Cloudy
28.9°C/25.2°C
7/20
Monday
Sunny
31.2°C/26.3°C
7/21
Tuesday
Sunny
32°C/27.2°C
7/22
Wednesday
Sunny
31.8°C/27.7°C
7/23
Thursday
Light rain shower
31.5°C/25.1°C
7/24
Friday
Patchy rain nearby
27.6°C/24°C
7/25
Saturday
Overcast
24.6°C/22.3°C
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