Koya weather live forecast

Today's maximum temperature in Koya is expected to be 3°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Tuesday
9th Dec
3

-1

5

2
Wednesday
10th Dec
6

-2

2

3
Thursday
11th Dec
9

-1

5

2
Friday
12th Dec
4

-4

3

3
Saturday
13th Dec
7

-5

4

3

5-day weather forecast updated at 04:03 on Monday 8th 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 Tuesday 9th December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 3°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north.

3
°C maximum temperature
-1
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
1
°C wind chill
8
kph wind from N

Koya weather for Wednesday 10th December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 6°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north.

6
°C maximum temperature
-2
°C minimum temperature
broken clouds
2
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
6
°C wind chill
5
kph wind from N

Koya weather for Thursday 11th December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 9°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-west.

9
°C maximum temperature
-1
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
8
°C wind chill
8
kph wind from SW

Koya weather for Friday 12th December 2025

Expect cloudy with sleet or snow in Koya, Japan with a maximum temperature of 4°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 11% chance of some sleet or snow and a gentle breeze of 13 kph from the north.

4
°C maximum temperature
-4
°C minimum temperature
cloudy with sleet or snow
3
hours of sunshine
3
UV index (Moderate)
11
% chance of some sleet or snow
<2
mm of sleet/snow expected
1
°C wind chill
13
kph wind from N

Koya weather for Saturday 13th December 2025

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 7°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 55% chance of some rain and a light breeze of 9 kph from the south-east.