Matsuyama weather in September 2025

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

  • 27°C maximum daytime temperature in September in Matsuyama27
    27°C max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in September in Matsuyama16
    16 days with some rainfall
  • 20°C minimum night-time temperature in September in Matsuyama20
    20°C min night temperature
  • 12 hours of daylight per day in September in Matsuyama12
    12 hours of daylight per day
  • Moderate heat & humidity in September in MatsuyamaM
    Moderate heat & humidity
  • 165 mm monthly rainfall in September in Matsuyama165
    165 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Matsuyama8
    8 (Very High) UV index
  • 25°C sea temperature in September in Matsuyama25
    25°C sea temperature

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

Daytime temperatures usually reach 27°C in Matsuyama in September with moderate heat and humidity, falling to 20°C at night.

How sunny is it in Matsuyama in September?

There are normally 5 hours of bright sunshine each day in Matsuyama in September - that's 43% of daylight hours.

How warm is the sea around Matsuyama in September?

The average sea temperature around Matsuyama in September is 25°C.

Does it rain in Matsuyama in September?

There are usually 16 days with some rain in Matsuyama in September and the average monthly rainfall is 165mm.

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

On average 1.4 days in September in Matsuyama are likely to be affected by the passage of one or more tropical storms.

Matsuyama September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:43 18:35
Monday, 15th September 2025 05:52 18:16
Tuesday, 30th September 2025 06:02 17:55

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