Koya weather live forecast

Today's maximum temperature in Koya is expected to be 11°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Monday
19th Jan
11

1

6

3
Tuesday
20th Jan
4

-5

0

1
Wednesday
21st Jan
-1

-6

6

3
Thursday
22nd Jan
-3

-5

2

3
Friday
23rd Jan
-2

-5

2

3

5-day weather forecast updated at 04:05 on Saturday 17th January 2026 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 19th January 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the west.

11
°C maximum temperature
1
°C minimum temperature
scattered clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
11
°C wind chill
5
kph wind from W

Koya weather for Tuesday 20th January 2026

Expect mostly cloudy with light snow in Koya, Japan with a maximum temperature of 4°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 cm of snow expected with 38% chance of some snow and a light breeze of 9 kph from the north.

4
°C maximum temperature
-5
°C minimum temperature
mostly cloudy with light snow
0
hours of sunshine
1
UV index (Low)
38
% chance of some snow
<2
cm of snow expected
2
°C wind chill
9
kph wind from N

Koya weather for Wednesday 21st January 2026

Expect clear skies with flurries of snow in Koya, Japan with a maximum temperature of -1°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0-2 cm of snow expected with 36% chance of some snow and a light breeze of 9 kph from the north.

-1
°C maximum temperature
-6
°C minimum temperature
clear skies with flurries of snow
6
hours of sunshine
3
UV index (Moderate)
36
% chance of some snow
<2
cm of snow expected
-4
°C wind chill
9
kph wind from N

Koya weather for Thursday 22nd January 2026

Expect mostly cloudy with light snow in Koya, Japan with a maximum temperature of -3°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 57% chance of some snow and a light breeze of 11 kph from the north-west.

-3
°C maximum temperature
-5
°C minimum temperature
mostly cloudy with light snow
2
hours of sunshine
3
UV index (Moderate)
57
% chance of some snow
<2
cm of snow expected
-7
°C wind chill
11
kph wind from NW

Koya weather for Friday 23rd January 2026

Expect mostly cloudy with light snow in Koya, Japan with a maximum temperature of -2°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 44% chance of some snow and a light breeze of 10 kph from the west.