Oita weather in September 2025

Expect 27°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Oita in September. Check more long-term weather averages for Oita in September before you book your next holiday to Japan in 2025/2026.

  • 27°C maximum daytime temperature in September in Oita27
    27°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in September in Oita17
    17 days with some rainfall
  • 19°C minimum night-time temperature in September in Oita19
    19°C min night temperature
  • 12 hours of daylight per day in September in Oita12
    12 hours of daylight per day
  • Moderate heat & humidity in September in OitaM
    Moderate heat & humidity
  • 233 mm monthly rainfall in September in Oita233
    233 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in September in Oita9
    9 (Very High) UV index
  • 27°C sea temperature in September in Oita27
    27°C sea temperature

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The September weather guide for Japan (Oita) 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 Oita in September?

Daytime temperatures usually reach 27°C in Oita in September with moderate heat and humidity, falling to 19°C at night.

How sunny is it in Oita in September?

There are normally 5 hours of bright sunshine each day in Oita in September - that's 41% of daylight hours.

How warm is the sea around Oita in September?

The average sea temperature around Oita in September is 27°C.

Does it rain in Oita in September?

There are usually 17 days with some rain in Oita in September and the average monthly rainfall is 233mm.

Oita September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:48 18:39
Monday, 15th September 2025 05:57 18:20
Tuesday, 30th September 2025 06:07 18:00

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