Kusatsu weather in September 2025

Expect 20°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Kusatsu in September. Check more long-term weather averages for Kusatsu in September before you book your next holiday to Japan in 2025/2026.

  • 20°C maximum daytime temperature in September in Kusatsu20
    20°C max day temperature
  • 4 hours of sunshine per day
  • 20 days with some rainfall in September in Kusatsu20
    20 days with some rainfall
  • 11°C minimum night-time temperature in September in Kusatsu11
    11°C min night temperature
  • 12 hours of daylight per day in September in Kusatsu12
    12 hours of daylight per day
  • No heat & humidity in September in Kusatsu0
    No heat & humidity
  • 205 mm monthly rainfall in September in Kusatsu205
    205 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Kusatsu8
    8 (Very High) UV index

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The September weather guide for Japan (Kusatsu) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Kusatsu in September?

Daytime temperatures usually reach 20°C in Kusatsu in September, falling to 11°C at night.

How sunny is it in Kusatsu in September?

There are normally 4 hours of bright sunshine each day in Kusatsu in September - that's 31% of daylight hours.

Does it rain in Kusatsu in September?

There are usually 20 days with some rain in Kusatsu in September and the average monthly rainfall is 205mm.

What is the chance of a typhoon in Kusatsu in September?

On average 1.3 days in September in Kusatsu are likely to be affected by the passage of one or more tropical storms.

Kusatsu September sunrise & sunset times

Browse the sunrise and sunset times for Kusatsu in September 2025. Select a month to view Kusatsu sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:17 18:14
Monday, 15th September 2025 05:28 17:53
Tuesday, 30th September 2025 05:40 17:31

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