Koya weather live forecast

Tomorrow's maximum temperature in Koya is expected to be 26°C.

5-day weather forecast updated at 04:03 on Friday 11th July 2025 GMT

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The 5-day weather forecast for Japan (Koya) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Koya weather forecast by day

Below are the detailed weather forecasts for Koya for the next 5 days.

Koya weather for Friday 11th July 2025

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 89% chance of some rain and little or no wind of 5 kph from the south-east.

  • 26°C maximum temperature26
    °C maximum temperature
  • 20°C minimum temperature20
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 89% chance of some rain89
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Little or no wind of 5 kph from the South-East5
    kph wind from SE

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Koya weather for Saturday 12th July 2025

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and little or no wind of 4 kph from the south-east.

  • 26°C maximum temperature26
    °C maximum temperature
  • 20°C minimum temperature20
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 64% chance of some rain64
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Little or no wind of 4 kph from the South-East4
    kph wind from SE

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Koya weather for Sunday 13th July 2025

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 62% chance of some rain and little or no wind of 6 kph from the south-east.

  • 27°C maximum temperature27
    °C maximum temperature
  • 20°C minimum temperature20
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 62% chance of some rain62
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Little or no wind of 6 kph from the South-East6
    kph wind from SE

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Koya weather for Monday 14th July 2025

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 82% chance of some rain and a light breeze of 8 kph from the south-east.

  • 26°C maximum temperature26
    °C maximum temperature
  • 20°C minimum temperature20
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 82% chance of some rain82
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 8 kph from the South-East8
    kph wind from SE

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Koya weather for Tuesday 15th July 2025

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 25°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 50 mm or more of rainfall expected with 77% chance of some rain and a light breeze of 9 kph from the south-east.

  • 25°C maximum temperature25
    °C maximum temperature
  • 20°C minimum temperature20
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 77% chance of some rain77
    % chance of some rain
  • 50 mm or more of rainfall expected>50
    mm or more of rainfall expected
  • 25°C wind chill25
    °C wind chill
  • Light breeze of 9 kph from the South-East9
    kph wind from SE

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Metric (°C / mm)  |  Imperial (°F / inches)

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