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Karuizawa

Karuizawa 1
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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

8/26
Wednesday
Overcast
31.3°C/18.3°C
8/27
Thursday
Light rain shower
21.8°C/16.1°C
8/28
Friday
Fog
27.1°C/15.3°C
8/29
Saturday
Mist
23.6°C/16.7°C
8/30
Sunday
Fog
19.4°C/16.4°C
8/31
Monday
Light rain shower
27.2°C/16.9°C
9/1
Tuesday
Fog
26.5°C/19.1°C

Karuizawa Frequently Asked Questions and Useful Information for Travel

Why is Karuizawa famous?

Karuizawa gained fame as a villa area when missionary Alexander Croft Shaw visited in 1886. Impressed by its beautiful nature and comfortable climate, he introduced it globally as a desirable summer retreat.

Is Karuizawa a good day trip from Tokyo?

Yes, Karuizawa is an excellent destination for a day trip from Tokyo. With frequent train services and a compact area filled with attractions like quaint shopping streets, waterfalls, art museums, and outlet malls, it offers a refreshing escape.

Who visited Karuizawa historically?

Since the 19th century, Karuizawa has been a popular destination for wealthy urbanites seeking respite in its natural surroundings.

Is Karuizawa worth visiting?

Karuizawa is absolutely worth visiting. While renowned as a summer and winter destination, its pristine natural beauty captivates visitors year-round, drawing people from across Japan and the world.

What kind of attractions can you find in Karuizawa?

Karuizawa offers a diverse range of attractions including beautiful natural landscapes like waterfalls, charming shopping streets, art museums, and popular outlet malls, making it a well-rounded destination for all visitors.