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
23rd May
17

12

2

UV5
Sunday
24th May
20

13

3

UV7
Monday
25th May
24

12

7

UV8
Tuesday
26th May
23

13

5

UV7
Wednesday
27th May
20

13

0

UV1

5-day weather forecast updated at 04:02 on Friday 22nd 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 23rd May 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.

17
°C maximum temperature
12
°C minimum temperature
broken clouds
2
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
17
°C wind chill
13
kph wind from SE

Koya weather for Sunday 24th May 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 20°C, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 39% chance of some rain and a light breeze of 10 kph from the south-east.

20
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
UV7
UV index (High)
39
% chance of some rain
<2
mm of rainfall expected
20
°C wind chill
10
kph wind from SE

Koya weather for Monday 25th May 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 24°C, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south-east.

24
°C maximum temperature
12
°C minimum temperature
broken clouds
7
hours of sunshine
UV8
UV index (Very High)
0
mm of rainfall expected
24
°C wind chill
4
kph wind from SE

Koya weather for Tuesday 26th May 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 23°C, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-east.

23
°C maximum temperature
13
°C minimum temperature
broken clouds
5
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
23
°C wind chill
7
kph wind from SE

Koya weather for Wednesday 27th May 2026

Expect overcast skies in Koya, Japan with a maximum temperature of 20°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-east.