Koya weather live forecast

Today's maximum temperature in Koya is expected to be 19°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Saturday
4th Jul
19

17

0

5
Sunday
5th Jul
22

18

1

4
Monday
6th Jul
21

19

0

3
Tuesday
7th Jul
23

19

5

6
Wednesday
8th Jul
25

19

4

10

5-day weather forecast updated at 04:03 on Friday 3rd July 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 Saturday 4th July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 84% chance of some rain and little or no wind of 5 kph from the south-east.

19
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
5
UV index (Moderate)
84
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
5
kph wind from SE

Koya weather for Sunday 5th July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 85% chance of some rain and little or no wind of 4 kph from the south.

22
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
4
UV index (Moderate)
85
% chance of some rain
<20
mm of rainfall expected
22
°C wind chill
4
kph wind from S

Koya weather for Monday 6th July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 83% chance of some rain and little or no wind of 5 kph from the south-east.

21
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
3
UV index (Moderate)
83
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
5
kph wind from SE

Koya weather for Tuesday 7th July 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 23°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south-east.

23
°C maximum temperature
19
°C minimum temperature
broken clouds
5
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
23
°C wind chill
4
kph wind from SE

Koya weather for Wednesday 8th July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 25°C, maximum UV of 10 (Very High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 57% chance of some rain and little or no wind of 4 kph from the south-east.