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.

Sunday
26th Apr
18

9

6

6
Monday
27th Apr
15

10

2

8
Tuesday
28th Apr
19

9

2

7
Wednesday
29th Apr
15

9

0

3
Thursday
30th Apr
12

8

0

4

5-day weather forecast updated at 04:02 on Sunday 26th 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 Sunday 26th April 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 18°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 95% chance of some rain and a light breeze of 8 kph from the south-east.

18
°C maximum temperature
9
°C minimum temperature
sunshine and showers
6
hours of sunshine
6
UV index (High)
95
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
8
kph wind from SE

Koya weather for Monday 27th April 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 15°C, maximum UV of 8 (Very High) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 36% chance of some rain and a light breeze of 8 kph from the north.

15
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
8
UV index (Very High)
36
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
8
kph wind from N

Koya weather for Tuesday 28th April 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 19°C, maximum UV of 7 (High) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-west.

19
°C maximum temperature
9
°C minimum temperature
broken clouds
2
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
19
°C wind chill
8
kph wind from SW

Koya weather for Wednesday 29th April 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 46% chance of some rain and a light breeze of 7 kph from the north-west.

15
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
3
UV index (Moderate)
46
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
7
kph wind from NW

Koya weather for Thursday 30th April 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 74% chance of some rain and little or no wind of 6 kph from the south-east.