Koya weather live forecast

Today's maximum temperature in Koya is expected to be 24°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Thursday
18th Jun
24

16

6

6
Friday
19th Jun
24

17

1

6
Saturday
20th Jun
21

18

1

1
Sunday
21st Jun
21

16

4

7
Monday
22nd Jun
20

15

3

3

5-day weather forecast updated at 04:03 on Wednesday 17th 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 18th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 24°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 20-30 mm of rainfall expected with 50% chance of some rain and little or no wind of 5 kph from the west.

24
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
50
% chance of some rain
<30
mm of rainfall expected
24
°C wind chill
5
kph wind from W

Koya weather for Friday 19th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 24°C, maximum UV of 6 (High) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 55% chance of some rain and little or no wind of 4 kph from the south-east.

24
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
6
UV index (High)
55
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
4
kph wind from SE

Koya weather for Saturday 20th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 21°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 40-50 mm of rainfall expected with 94% chance of some rain and a light breeze of 10 kph from the south-west.

21
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
1
UV index (Low)
94
% chance of some rain
<50
mm of rainfall expected
0
no heat & humidity
10
kph wind from SW

Koya weather for Sunday 21st June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 21°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 40-50 mm of rainfall expected with 95% chance of some rain and a light breeze of 11 kph from the north-west.

21
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
95
% chance of some rain
<50
mm of rainfall expected
21
°C wind chill
11
kph wind from NW

Koya weather for Monday 22nd June 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 71% chance of some rain and little or no wind of 5 kph from the north.