Koya weather live forecast

Today's maximum temperature in Koya is expected to be 17°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Saturday
2nd May
17

8

10

8
Sunday
3rd May
13

9

1

3
Monday
4th May
15

8

4

4
Tuesday
5th May
20

7

12

7
Wednesday
6th May
21

12

1

5

5-day weather forecast updated at 04:02 on Saturday 2nd 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 Saturday 2nd May 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 17°C, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the north-west.

17
°C maximum temperature
8
°C minimum temperature
broken clouds
10
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
25
kph wind from NW

Koya weather for Sunday 3rd May 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 100% chance of some rain and a moderate breeze of 27 kph from the south.

13
°C maximum temperature
9
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
3
UV index (Moderate)
100
% chance of some rain
<20
mm of rainfall expected
13
°C wind chill
27
kph wind from S

Koya weather for Monday 4th May 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 30-40 mm of rainfall expected with 67% chance of some rain and a moderate breeze of 27 kph from the west.

15
°C maximum temperature
8
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
4
UV index (Moderate)
67
% chance of some rain
<40
mm of rainfall expected
15
°C wind chill
27
kph wind from W

Koya weather for Tuesday 5th May 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 20°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north.

20
°C maximum temperature
7
°C minimum temperature
scattered clouds
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
20
°C wind chill
8
kph wind from N

Koya weather for Wednesday 6th May 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-east.