Koya weather live forecast

Today's maximum temperature in Koya is expected to be 45°F. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

• Sunday
  7th Dec
  45
  32
  
  10
  3
• Monday
  8th Dec
  48
  36
  
  2
  2
• Tuesday
  9th Dec
  41
  28
  
  4
  2
• Wednesday
  10th Dec
  46
  28
  
  1
  3
• Thursday
  11th Dec
  50
  30
  
  7
  3

5-day weather forecast updated at 04:03 on Saturday 6th December 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 Sunday 7th December 2025

Expect clear skies in Koya, Japan with a maximum temperature of 45°F, maximum UV of 3 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 4 mph from the west.

• 45
  °F maximum temperature
• 32
  °F minimum temperature
• 
  clear skies
• 10
  hours of sunshine
• 3
  UV index (Moderate)
• 0
  mm of rainfall expected
• 43
  °F wind chill
• 4
  mph wind from W

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Koya weather for Monday 8th December 2025

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 48°F, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 13% chance of some rain and a light breeze of 6 mph from the west.

• 48
  °F maximum temperature
• 36
  °F minimum temperature
• 
  mostly cloudy with light rain
• 2
  hours of sunshine
• 2
  UV index (Low)
• 13
  % chance of some rain
• <2
  mm of rainfall expected
• 46
  °F wind chill
• 6
  mph wind from W

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Koya weather for Tuesday 9th December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 41°F, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 5 mph from the north.

• 41
  °F maximum temperature
• 28
  °F minimum temperature
• 
  broken clouds
• 4
  hours of sunshine
• 2
  UV index (Low)
• 0
  mm of rainfall expected
• 37
  °F wind chill
• 5
  mph wind from N

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Koya weather for Wednesday 10th December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 46°F, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 2 mph from the north-east.

• 46
  °F maximum temperature
• 28
  °F minimum temperature
• 
  broken clouds
• 1
  hour of sunshine
• 3
  UV index (Moderate)
• 0
  mm of rainfall expected
• 46
  °F wind chill
• 2
  mph wind from NE

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Koya weather for Thursday 11th December 2025

Expect sunshine and showers in Koya, Japan with a maximum temperature of 50°F, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 4 mph from the north-west.

• 50
  °F maximum temperature
• 30
  °F minimum temperature
• 
  sunshine and showers
• 7
  hours of sunshine
• 3
  UV index (Moderate)
• 25
  % chance of some rain
• <2
  mm of rainfall expected
• 0
  no heat & humidity
• 4
  mph wind from NW

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Metric (°C)  |  Imperial (°F)

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