When to go · Kusatsu
Kusatsu in September
Mixed month. Outside the best window (May–Jun, Oct–Nov). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.
Key facts
- Verdict
- Mixed
- Temperature
- 20°C (68°F)68°F (20°C) / 11°C (52°F)52°F (11°C)
- average high / low
- Rain days
- 14
- Crowds
- Medium
- Japan overall
- Prices
- Medium
- Japan overall
Verdict
Outside the best window (May–Jun, Oct–Nov). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.
Is another month better than September?
September is rated mixed. These months rate higher:
Weather in September
- KusatsuHighs around 20 °C (68 °F), lows around 11 °C (52 °F), rain on about 14 daysHighs around 68 °F (20 °C), lows around 52 °F (11 °C), rain on about 14 days
Crowds and prices
- Crowds · Japan overall
- Medium
- Prices · Japan overall
- Medium
Japan overall: Still hot; typhoon peak can cancel flights and ferries for a day or two.
Compare two months
Weather, crowds and prices for any two months in Kusatsu, side by side.
Verdict
Sep: Mixed
May: Great (better)
Daytime high
Sep: 20 °C (68 °F)68 °F (20 °C)
May: 16 °C (61 °F)61 °F (16 °C)
Night low
Sep: 11 °C (52 °F)52 °F (11 °C)
May: 5 °C (41 °F)41 °F (5 °C)
Rain days
Sep: 14
May: 12 (better)
Crowds
Sep: Medium
May: Medium
Prices
Sep: Medium
May: Medium
Festivals listed
Sep: 0
May: 1
September: Outside the best window (May–Jun, Oct–Nov). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.
May: Inside Kusatsu's best window: May–Jun, Oct–Nov.
Kusatsu: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings
- A rain jacket or umbrella and shoes that dry fast