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.

Tuesday
9th Jun
19

13

1

4
Wednesday
10th Jun
21

12

5

10
Thursday
11th Jun
22

11

7

10
Friday
12th Jun
21

13

11

8
Saturday
13th Jun
23

12

9

9

5-day weather forecast updated at 04:02 on Monday 8th June 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 9th June 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 26% chance of some rain and little or no wind of 6 kph from the north.

19
°C maximum temperature
13
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
4
UV index (Moderate)
26
% chance of some rain
<10
mm of rainfall expected
19
°C wind chill
6
kph wind from N

Koya weather for Wednesday 10th June 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 21°C, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north.

21
°C maximum temperature
12
°C minimum temperature
broken clouds
5
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
6
kph wind from N

Koya weather for Thursday 11th June 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 22°C, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the west.

22
°C maximum temperature
11
°C minimum temperature
scattered clouds
7
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
5
kph wind from W

Koya weather for Friday 12th June 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 21°C, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north-west.

21
°C maximum temperature
13
°C minimum temperature
scattered clouds
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
5
kph wind from NW

Koya weather for Saturday 13th June 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 23°C, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 48% chance of some rain and little or no wind of 4 kph from the south-east.