Koya weather in April 2026

Expect daytime maximum temperatures of 63°F in Koya, Japan in April based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 7.5 inches of rainfall in the month.

  • 63°F maximum daytime temperature in April in Koya63
    63°F max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in April in Koya16
    16 days with some rainfall
  • 45°F minimum night-time temperature in April in Koya45
    45°F min night temperature
  • 13 hours of daylight per day in April in Koya13
    13 hours of daylight per day
  • No heat & humidity in April in Koya0
    No heat & humidity
  • 7.5 inches monthly rainfall in April in Koya7.5
    7.5 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in April in Koya8
    8 (Very High) UV index

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The April weather guide for Japan (Koya) 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)  |  Imperial (°F)

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How hot is it in Koya in April?

Daytime temperatures usually reach 66°F in Koya in April, falling to 48°F at night.

How sunny is it in Koya in April?

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

How warm is the sea around Koya in April?

The average sea temperature around Koya in April is 61°F.

Does it rain in Koya in April?

There are usually 16 days with some rain in Koya in April and the average monthly rainfall is 4.7 inches.

Koya April sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st April 2026 05:46 18:18
Wednesday, 15th April 2026 05:27 18:29
Thursday, 30th April 2026 05:10 18:41

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