Koya weather live forecast

Today's maximum temperature in Koya is expected to be 14°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Tuesday
21st Apr
14

6

9

7
Wednesday
22nd Apr
19

5

4

8
Thursday
23rd Apr
12

8

0

1
Friday
24th Apr
14

4

2

5
Saturday
25th Apr
17

3

5

8

5-day weather forecast updated at 04:02 on Tuesday 21st 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 Tuesday 21st April 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 14°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 2-5 mm of rainfall expected with 11% chance of some rain and a gentle breeze of 13 kph from the north.

14
°C maximum temperature
6
°C minimum temperature
sunshine and showers
9
hours of sunshine
7
UV index (High)
11
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
13
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 8 (Very High) and 4 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
5
°C minimum temperature
broken clouds
4
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
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 12°C, maximum UV of 1 (Low) 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 7 kph from the east.

12
°C maximum temperature
8
°C minimum temperature
cloudy with some rain
0
hours of sunshine
1
UV index (Low)
100
% chance of some rain
<40
mm of rainfall expected
12
°C wind chill
7
kph wind from E

Koya weather for Friday 24th April 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 14°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 35% chance of some rain and a light breeze of 7 kph from the north.

14
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
5
UV index (Moderate)
35
% chance of some rain
<5
mm of rainfall expected
14
°C wind chill
7
kph wind from N

Koya weather for Saturday 25th April 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 17°C, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south-east.