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Kusatsu

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Kusatsu Weather and climate

Data source：Meteostat
Update date：2025-09

Kusatsu year round climate
  • Spring (March–May): Average 10.5–19.3°C, mild climate but with relatively high rainfall, especially in April and May. Common activities: Flower viewing, walking in the countryside. Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): Average 23.7–29.5°C, hot and humid with relatively high rainfall. Common activities: Swimming, sightseeing in summer resorts. Recommended clothing: Light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): Average 19.1–27.1°C, comfortable and pleasant climate with decreasing rainfall. Common activities: Hiking, maple leaf viewing. Recommended clothing: Comfortable long-sleeved shirts, light jacket.
  • Winter (December–February): Average 5.1–7.2°C, low temperatures, dry and with little rainfall. Common activities: Hot spring experience. Recommended clothing: Warm clothing, thick jacket, scarf and gloves.
Kusatsu climatological average

Annual average temperature: approx. 17°C / Annual rainfall: approx. 1603 mm / Summer humidity: 70%–80% / Rainiest month: August

Kusatsu monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
5.1°C
47.4
February
6.1°C
54
March
10.5°C
117.5
April
16.4°C
161.4
May
19.3°C
199.8
June
23.7°C
248.8
July
28.9°C
176
August
29.5°C
254.7
September
27.1°C
127.3
October
19.1°C
105.2
November
13.9°C
91.9
December
7.2°C
19.2
Kusatsu weather for the next seven days
10/13
Monday
Patchy rain nearby
25.8°C/19.7°C
10/14
Tuesday
Moderate rain
27°C/18°C
10/15
Wednesday
Moderate rain
23.1°C/19.1°C
10/16
Thursday
Moderate rain
24.3°C/18.9°C
10/17
Friday
Patchy rain nearby
24.3°C/16.1°C
10/18
Saturday
Patchy rain nearby
21.6°C/18.1°C
10/19
Sunday
Patchy rain nearby
21.1°C/16.7°C

Kusatsu FAQ

Best time to visit Kusatsu?
Kusatsu Onsen has beautiful scenery all year round. In spring, you can enjoy the sea of flowers on the mountains, in summer, you can enjoy the open-air hot springs, in autumn, you can see red leaves, and in winter, you can experience the snow scenery. Therefore, you can visit it in any season.
What are Kusatsu’s must-see attractions?
Must-see attractions in Kusatsu include Yubatake, Nishinogawara Park, Shirane Shrine, Otakino-yu, etc. Among them, Yubatake is the most famous attraction in Kusatsu, which provides a hot spring water flow method that directly brings spring water from the ground to the bathtub.