Hiroshima weather in May 2026

Expect daytime maximum temperatures of 22°C in Hiroshima, Japan in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 14 days with some rainfall and typically 154 mm of rainfall in the month.

  • 22°C maximum daytime temperature in May in Hiroshima22
    22°C max day temperature
  • 7 hours of sunshine per day
  • 14 days with some rainfall in May in Hiroshima14
    14 days with some rainfall
  • 13°C minimum night-time temperature in May in Hiroshima13
    13°C min night temperature
  • 14 hours of daylight per day in May in Hiroshima14
    14 hours of daylight per day
  • No heat & humidity in May in Hiroshima0
    No heat & humidity
  • 154 mm monthly rainfall in May in Hiroshima154
    154 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in May in Hiroshima9
    9 (Very High) UV index
  • 18°C sea temperature in May in Hiroshima18
    18°C sea temperature

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The May weather guide for Japan (Hiroshima) 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 Hiroshima in May?

Daytime temperatures usually reach 23°C in Hiroshima in May, falling to 14°C at night.

How sunny is it in Hiroshima in May?

There are normally 6 hours of bright sunshine each day in Hiroshima in May - that's 42% of daylight hours.

How warm is the sea around Hiroshima in May?

The average sea temperature around Hiroshima in May is 18°C.

Does it rain in Hiroshima in May?

There are usually 16 days with some rain in Hiroshima in May and the average monthly rainfall is 132mm.

Hiroshima May sunrise & sunset times

Browse the sunrise and sunset times for Hiroshima in May 2026. Select a month to view Hiroshima sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:21 18:54
Saturday, 16th May 2026 05:08 19:06
Sunday, 31st May 2026 05:00 19:16

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