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.

Monday
20th Apr
18

9

5

5
Tuesday
21st Apr
15

7

7

9
Wednesday
22nd Apr
19

6

3

7
Thursday
23rd Apr
13

10

0

4
Friday
24th Apr
13

7

0

2

5-day weather forecast updated at 04:02 on Monday 20th April 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 Monday 20th April 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-east.

18
°C maximum temperature
9
°C minimum temperature
broken clouds
5
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
18
°C wind chill
10
kph wind from SE

Koya weather for Tuesday 21st April 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 15°C, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 28% chance of some rain and a light breeze of 11 kph from the north.

15
°C maximum temperature
7
°C minimum temperature
sunshine and showers
7
hours of sunshine
9
UV index (Very High)
28
% chance of some rain
<5
mm of rainfall expected
15
°C wind chill
11
kph wind from N

Koya weather for Wednesday 22nd April 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 19°C, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south-east.

19
°C maximum temperature
6
°C minimum temperature
broken clouds
3
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
19
°C wind chill
4
kph wind from SE

Koya weather for Thursday 23rd April 2026

Expect cloudy with some rain in Koya, Japan with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 100% chance of some rain and a light breeze of 8 kph from the south-east.

13
°C maximum temperature
10
°C minimum temperature
cloudy with some rain
0
hours of sunshine
4
UV index (Moderate)
100
% chance of some rain
<40
mm of rainfall expected
13
°C wind chill
8
kph wind from SE

Koya weather for Friday 24th April 2026

Expect cloudy with some rain in Koya, Japan with a maximum temperature of 13°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and little or no wind of 5 kph from the east.