Niigata weather in May 2026

Expect daytime maximum temperatures of 21°C in Niigata, Japan in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 97 mm of rainfall in the month.

  • 21°C maximum daytime temperature in May in Niigata21
    21°C max day temperature
  • 7 hours of sunshine per day
  • 17 days with some rainfall in May in Niigata17
    17 days with some rainfall
  • 12°C minimum night-time temperature in May in Niigata12
    12°C min night temperature
  • 14 hours of daylight per day in May in Niigata14
    14 hours of daylight per day
  • No heat & humidity in May in Niigata0
    No heat & humidity
  • 97 mm monthly rainfall in May in Niigata97
    97 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Niigata8
    8 (Very High) UV index
  • 14°C sea temperature in May in Niigata14
    14°C sea temperature

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

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

How sunny is it in Niigata in May?

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

How warm is the sea around Niigata in May?

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

Does it rain in Niigata in May?

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

Niigata May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 04:48 18:34
Saturday, 16th May 2026 04:33 18:48
Sunday, 31st May 2026 04:24 19:00

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