Sendai weather in September 2025

Expect 24°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Sendai in September. Check more long-term weather averages for Sendai in September before you book your next holiday to Japan in 2025/2026.

  • 24°C maximum daytime temperature in September in Sendai24
    24°C max day temperature
  • 4 hours of sunshine per day
  • 20 days with some rainfall in September in Sendai20
    20 days with some rainfall
  • 17°C minimum night-time temperature in September in Sendai17
    17°C min night temperature
  • 12 hours of daylight per day in September in Sendai12
    12 hours of daylight per day
  • No heat & humidity in September in Sendai0
    No heat & humidity
  • 174 mm monthly rainfall in September in Sendai174
    174 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Sendai7
    7 (High) UV index
  • 22°C sea temperature in September in Sendai22
    22°C sea temperature

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The September weather guide for Japan (Sendai) 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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More about Japan

How hot is it in Sendai in September?

Daytime temperatures usually reach 24°C in Sendai in September, falling to 17°C at night.

How sunny is it in Sendai in September?

There are normally 4 hours of bright sunshine each day in Sendai in September - that's 34% of daylight hours.

How warm is the sea around Sendai in September?

The average sea temperature around Sendai in September is 22°C.

Does it rain in Sendai in September?

There are usually 20 days with some rain in Sendai in September and the average monthly rainfall is 174mm.

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

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

Sendai September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:06 18:07
Monday, 15th September 2025 05:18 17:45
Tuesday, 30th September 2025 05:31 17:21

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