Koya weather live forecast

Today's maximum temperature in Koya is expected to be 19°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Wednesday
27th May
19

13

0

8
Thursday
28th May
23

16

0

8
Friday
29th May
22

11

3

7
Saturday
30th May
23

9

14

10
Sunday
31st May
25

12

13

10

5-day weather forecast updated at 04:02 on Tuesday 26th 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 Wednesday 27th May 2026

Expect cloudy with some rain in Koya, Japan with a maximum temperature of 19°C, maximum UV of 8 (Very High) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 81% chance of some rain and a light breeze of 8 kph from the south-east.

19
°C maximum temperature
13
°C minimum temperature
cloudy with some rain
0
hours of sunshine
8
UV index (Very High)
81
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
8
kph wind from SE

Koya weather for Thursday 28th May 2026

Expect overcast skies in Koya, Japan with a maximum temperature of 23°C, maximum UV of 8 (Very High) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-east.

23
°C maximum temperature
16
°C minimum temperature
overcast skies
0
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
23
°C wind chill
8
kph wind from SE

Koya weather for Friday 29th May 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 22°C, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 54% chance of some rain and a light breeze of 12 kph from the north-west.

22
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
7
UV index (High)
54
% chance of some rain
<5
mm of rainfall expected
22
°C wind chill
12
kph wind from NW

Koya weather for Saturday 30th May 2026

Expect clear skies in Koya, Japan with a maximum temperature of 23°C, maximum UV of 10 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

23
°C maximum temperature
9
°C minimum temperature
clear skies
14
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
23
°C wind chill
7
kph wind from N

Koya weather for Sunday 31st May 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 25°C, maximum UV of 10 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south-east.