Koya weather in May 2026

Expect daytime maximum temperatures of 70°F in Koya, Japan in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 7.8 inches of rainfall in the month.

  • 70°F maximum daytime temperature in May in Koya70
    70°F max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Koya16
    16 days with some rainfall
  • 54°F minimum night-time temperature in May in Koya54
    54°F min night temperature
  • 14 hours of daylight per day in May in Koya14
    14 hours of daylight per day
  • No heat & humidity in May in Koya0
    No heat & humidity
  • 7.8 inches monthly rainfall in May in Koya7.8
    7.8 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in May in Koya9
    9 (Very High) UV index

More about Koya

Koya by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Japan

Booking.com: Latest worldwide hotel deals

  • Check out latest hotel deals worldwide with Booking.com
  • Find trending hotels, popular destinations & more
  • Search for specific destinations & dates or by hotel type
Go to Booking.com deal >>

View all Booking.com offers

The May 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)

Back to top

More about Japan

How hot is it in Koya in May?

Daytime temperatures usually reach 73°F in Koya in May, falling to 57°F at night.

How sunny is it in Koya in May?

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

How warm is the sea around Koya in May?

The average sea temperature around Koya in May is 64°F.

Does it rain in Koya in May?

There are usually 16 days with some rain in Koya in May and the average monthly rainfall is 5.2 inches.

Koya May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:09 18:41
Saturday, 16th May 2026 04:55 18:53
Sunday, 31st May 2026 04:47 19:03

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^