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.

Monday
29th Dec
45

27

8

2
Tuesday
30th Dec
46

34

1

2
Wednesday
31st Dec
39

27

3

3
Thursday
1st Jan
32

25

4

2
Friday
2nd Jan
32

23

2

2

5-day weather forecast updated at 04:03 on Saturday 27th 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 Monday 29th December 2025

Expect scattered clouds in Koya, Japan with a maximum temperature of 45°F, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 3 mph from the south-west.

45
°F maximum temperature
27
°F minimum temperature
scattered clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
45
°F wind chill
3
mph wind from SW

Koya weather for Tuesday 30th December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 46°F, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 4 mph from the west.

46
°F maximum temperature
34
°F minimum temperature
broken clouds
1
hour of sunshine
2
UV index (Low)
0
mm of rainfall expected
45
°F wind chill
4
mph wind from W

Koya weather for Wednesday 31st December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 39°F, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the north-west.

39
°F maximum temperature
27
°F minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
34
°F wind chill
6
mph wind from NW

Koya weather for Thursday 1st January 2026

Expect clear skies with flurries of snow in Koya, Japan with a maximum temperature of 32°F, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 32% chance of some snow and a light breeze of 6 mph from the north-west.

32
°F maximum temperature
25
°F minimum temperature
clear skies with flurries of snow
4
hours of sunshine
2
UV index (Low)
32
% chance of some snow
<2
cm of snow expected
27
°F wind chill
6
mph wind from NW

Koya weather for Friday 2nd January 2026

Expect mostly cloudy with light snow in Koya, Japan with a maximum temperature of 32°F, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 31% chance of some snow and a light breeze of 7 mph from the north-west.