Koya weather in October 2025

Expect 20°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Koya in October. Check more long-term weather averages for Koya in October before you book your next holiday to Japan in 2025/2026.

  • 20°C maximum daytime temperature in October in Koya20
    20°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in October in Koya15
    15 days with some rainfall
  • 11°C minimum night-time temperature in October in Koya11
    11°C min night temperature
  • 11 hours of daylight per day in October in Koya11
    11 hours of daylight per day
  • No heat & humidity in October in Koya0
    No heat & humidity
  • 164 mm monthly rainfall in October in Koya164
    164 mm of monthly rainfall
  • UV (maximum) index 6 (High) in October in Koya6
    6 (High) UV index

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The October 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 / mm)  |  Imperial (°F / inches)

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More about Japan

How hot is it in Koya in October?

Daytime temperatures usually reach 20°C in Koya in October, falling to 11°C at night.

How sunny is it in Koya in October?

There are normally 5 hours of bright sunshine each day in Koya in October - that's 43% of daylight hours.

Does it rain in Koya in October?

There are usually 15 days with some rain in Koya in October and the average monthly rainfall is 164mm.

What is the chance of a typhoon in Koya in October?

On average less than 1 day in October in Koya is likely to be affected by the passage of one or more tropical storms.

Koya October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:52 17:42
Thursday, 16th October 2025 06:03 17:22
Friday, 31st October 2025 06:16 17:06

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