Shirahama weather in September 2025

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

  • 27°C maximum daytime temperature in September in Shirahama27
    27°C max day temperature
  • 5 hours of sunshine per day
  • 18 days with some rainfall in September in Shirahama18
    18 days with some rainfall
  • 20°C minimum night-time temperature in September in Shirahama20
    20°C min night temperature
  • 12 hours of daylight per day in September in Shirahama12
    12 hours of daylight per day
  • Moderate heat & humidity in September in ShirahamaM
    Moderate heat & humidity
  • 297 mm monthly rainfall in September in Shirahama297
    297 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Shirahama8
    8 (Very High) UV index
  • 27°C sea temperature in September in Shirahama27
    27°C sea temperature

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

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

How sunny is it in Shirahama in September?

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

How warm is the sea around Shirahama in September?

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

Does it rain in Shirahama in September?

There are usually 18 days with some rain in Shirahama in September and the average monthly rainfall is 297mm.

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

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

Shirahama September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:32 18:24
Monday, 15th September 2025 05:42 18:05
Tuesday, 30th September 2025 05:52 17:45

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