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.

Saturday
19th Sep
24

16

7

6
Sunday
20th Sep
23

19

2

5
Monday
21st Sep
20

18

1

5
Tuesday
22nd Sep
20

14

5

7
Wednesday
23rd Sep
22

14

4

4

5-day weather forecast updated at 04:03 on Saturday 19th September 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 19th September 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 24°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 7% chance of some rain and little or no wind of 5 kph from the east.

24
°C maximum temperature
16
°C minimum temperature
sunshine and showers
7
hours of sunshine
6
UV index (High)
7
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
5
kph wind from E

Koya weather for Sunday 20th September 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 47% chance of some rain and a light breeze of 9 kph from the north-east.

23
°C maximum temperature
19
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
5
UV index (Moderate)
47
% chance of some rain
<5
mm of rainfall expected
23
°C wind chill
9
kph wind from NE

Koya weather for Monday 21st September 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 20-30 mm of rainfall expected with 69% chance of some rain and a gentle breeze of 13 kph from the north.

20
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
5
UV index (Moderate)
69
% chance of some rain
<30
mm of rainfall expected
20
°C wind chill
13
kph wind from N

Koya weather for Tuesday 22nd September 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 20°C, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 22% chance of some rain and a gentle breeze of 13 kph from the north.

20
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
7
UV index (High)
22
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
13
kph wind from N

Koya weather for Wednesday 23rd September 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 64% chance of some rain and little or no wind of 4 kph from the south-east.