Koya weather live forecast

Today's maximum temperature in Koya is expected to be 8°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Thursday
15th Jan
8

-3

5

2
Friday
16th Jan
9

1

5

3
Saturday
17th Jan
10

0

10

3
Sunday
18th Jan
10

0

10

3
Monday
19th Jan
11

1

5

2

5-day weather forecast updated at 04:03 on Wednesday 14th 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 Thursday 15th January 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 8°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 50% chance of some rain and a light breeze of 7 kph from the south-west.

8
°C maximum temperature
-3
°C minimum temperature
sunshine and showers
5
hours of sunshine
2
UV index (Low)
50
% chance of some rain
<2
mm of rainfall expected
7
°C wind chill
7
kph wind from SW

Koya weather for Friday 16th January 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 9°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected and little or no wind of 6 kph from the north-west.

9
°C maximum temperature
1
°C minimum temperature
sunshine and showers
5
hours of sunshine
3
UV index (Moderate)
<2
mm of rainfall expected
8
°C wind chill
6
kph wind from NW

Koya weather for Saturday 17th January 2026

Expect clear skies in Koya, Japan with a maximum temperature of 10°C, maximum UV of 3 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the south-west.

10
°C maximum temperature
0
°C minimum temperature
clear skies
10
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
6
kph wind from SW

Koya weather for Sunday 18th January 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 10°C, maximum UV of 3 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 3 kph from the north-east.

10
°C maximum temperature
0
°C minimum temperature
scattered clouds
10
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
10
°C wind chill
3
kph wind from NE

Koya weather for Monday 19th January 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 11°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south.