Koya weather live forecast

Today's maximum temperature in Koya is expected to be 23°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Thursday
4th Jun
23

13

3

5
Friday
5th Jun
18

14

0

6
Saturday
6th Jun
21

14

2

7
Sunday
7th Jun
19

14

0

6
Monday
8th Jun
20

15

2

3

5-day weather forecast updated at 04:02 on Wednesday 3rd June 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 4th June 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 47% chance of some rain and a light breeze of 8 kph from the north.

23
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
5
UV index (Moderate)
47
% chance of some rain
<2
mm of rainfall expected
23
°C wind chill
8
kph wind from N

Koya weather for Friday 5th June 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 18°C, maximum UV of 6 (High) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 34% chance of some rain and a light breeze of 9 kph from the south-east.

18
°C maximum temperature
14
°C minimum temperature
mostly cloudy with rain
0
hours of sunshine
6
UV index (High)
34
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
9
kph wind from SE

Koya weather for Saturday 6th June 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 21°C, maximum UV of 7 (High) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 41% chance of some rain and little or no wind of 4 kph from the south-east.

21
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
7
UV index (High)
41
% chance of some rain
<2
mm of rainfall expected
21
°C wind chill
4
kph wind from SE

Koya weather for Sunday 7th June 2026

Expect cloudy with some rain in Koya, Japan with a maximum temperature of 19°C, maximum UV of 6 (High) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 71% chance of some rain and a light breeze of 9 kph from the south-east.

19
°C maximum temperature
14
°C minimum temperature
cloudy with some rain
0
hours of sunshine
6
UV index (High)
71
% chance of some rain
<30
mm of rainfall expected
19
°C wind chill
9
kph wind from SE

Koya weather for Monday 8th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 50 mm or more of rainfall expected with 79% chance of some rain and a light breeze of 9 kph from the west.