Koya weather live forecast

Today's maximum temperature in Koya is expected to be 22°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Sunday
31st May
22

14

3

4
Monday
1st Jun
25

14

9

10
Tuesday
2nd Jun
18

15

0

2
Wednesday
3rd Jun
19

14

0

4
Thursday
4th Jun
22

13

8

4

5-day weather forecast updated at 04:02 on Saturday 30th May 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 Sunday 31st May 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south.

22
°C maximum temperature
14
°C minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
4
kph wind from S

Koya weather for Monday 1st June 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 25°C, maximum UV of 10 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-east.

25
°C maximum temperature
14
°C minimum temperature
broken clouds
9
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
25
°C wind chill
7
kph wind from SE

Koya weather for Tuesday 2nd 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 30-40 mm of rainfall expected with 97% chance of some rain and a gentle breeze of 13 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)
97
% chance of some rain
<40
mm of rainfall expected
0
no heat & humidity
13
kph wind from SE

Koya weather for Wednesday 3rd June 2026

Expect cloudy with some rain in Koya, Japan with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 50 mm or more of rainfall expected with 95% chance of some rain and a moderate breeze of 21 kph from the north-west.

19
°C maximum temperature
14
°C minimum temperature
cloudy with some rain
0
hours of sunshine
4
UV index (Moderate)
95
% chance of some rain
>50
mm or more of rainfall expected
19
°C wind chill
21
kph wind from NW

Koya weather for Thursday 4th June 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-west.