Koya weather live forecast

Today's maximum temperature in Koya is expected to be 18°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Tuesday
23rd Jun
18

15

2

4
Wednesday
24th Jun
18

15

0

2
Thursday
25th Jun
20

17

1

2
Friday
26th Jun
21

16

3

1
Saturday
27th Jun
23

16

0

2

5-day weather forecast updated at 04:02 on Tuesday 23rd 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 Tuesday 23rd June 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 15% chance of some rain and little or no wind of 5 kph from the north.

18
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
4
UV index (Moderate)
15
% chance of some rain
<2
mm of rainfall expected
18
°C wind chill
5
kph wind from N

Koya weather for Wednesday 24th June 2026

Expect cloudy with some rain in Koya, Japan with a maximum temperature of 18°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 40-50 mm of rainfall expected with 98% chance of some rain and little or no wind of 6 kph from the south-east.

18
°C maximum temperature
15
°C minimum temperature
cloudy with some rain
0
hours of sunshine
2
UV index (Low)
98
% chance of some rain
<50
mm of rainfall expected
0
no heat & humidity
6
kph wind from SE

Koya weather for Thursday 25th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 20°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 50 mm or more of rainfall expected with 100% chance of some rain and a light breeze of 8 kph from the south-west.

20
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
2
UV index (Low)
100
% chance of some rain
>50
mm or more of rainfall expected
0
no heat & humidity
8
kph wind from SW

Koya weather for Friday 26th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 21°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 50 mm or more of rainfall expected with 83% chance of some rain and a light breeze of 8 kph from the south-west.

21
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
1
UV index (Low)
83
% chance of some rain
>50
mm or more of rainfall expected
21
°C wind chill
8
kph wind from SW

Koya weather for Saturday 27th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 23°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 50 mm or more of rainfall expected with 75% chance of some rain and a light breeze of 9 kph from the south-east.