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Kusatsu

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Kusatsu Weather, Climate and Best Time to Visit

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

4/30
Thursday
Moderate rain
12.4°C/11.1°C
5/1
Friday
Moderate rain
16°C/10.9°C
5/2
Saturday
Patchy rain nearby
21.7°C/11.3°C
5/3
Sunday
Patchy rain nearby
25.1°C/12.3°C
5/4
Monday
Heavy rain
20.5°C/14.1°C
5/5
Tuesday
Patchy rain nearby
18.4°C/12.3°C
5/6
Wednesday
Patchy rain nearby
16.9°C/10.7°C

Kusatsu Frequently Asked Questions and Useful Information for Travel

Is Kusatsu worth visiting?

Even if you're not an avid hot spring tourist, Kusatsu is worth a visit for its historical and traditional value. It is also a great place to wind down with friends after an exciting skiing trip at one of the nearby slopes in the winter.

What is Kusatsu famous for?

Kusatsu is recognized along with Gero and Arima as one of Japan's three most famous hot spring resorts. The Yubatake (Hot Water field) is a central meeting and sightseeing spot in Kusatsu Onsen. It's quite a unique sight to see the pools and river steaming away, offering a refreshing break from the usual hustle of tourist towns.

How do I go from Tokyo to Kusatsu?

Take the Hokuriku Shinkansen from Tokyo to Karuizawa and then a Kusakaru Kotsu bus from Karuizawa to Kusatsu Onsen.

What is the closest airport to Kusatsu Onsen?

While Matsumoto Airport is the closest, a more convenient option for reaching Kusatsu Onsen from Tokyo is to take the Hokuriku Shinkansen to Karuizawa and then transfer to a bus. For those arriving from further afield, consider flying into Haneda or Narita and then taking a train to Kusatsu Onsen.

What are the main attractions in Kusatsu?

The Yubatake, or 'Hot Water Field,' is the iconic heart of Kusatsu Onsen, where steaming hot spring water flows. Visitors can also explore the various outdoor and indoor hot spring baths, enjoy scenic walks around the town, and experience the traditional atmosphere of this renowned hot spring resort.