Koya weather live forecast

Today's maximum temperature in Koya is expected to be 21°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Tuesday
16th Jun
21

13

8

6
Wednesday
17th Jun
18

15

0

4
Thursday
18th Jun
22

16

3

7
Friday
19th Jun
24

17

6

7
Saturday
20th Jun
22

16

0

6

5-day weather forecast updated at 04:02 on Monday 15th 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 16th June 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 21°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the south-east.

21
°C maximum temperature
13
°C minimum temperature
broken clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
6
kph wind from SE

Koya weather for Wednesday 17th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 95% chance of some rain and a light breeze of 9 kph from the south-east.

18
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
4
UV index (Moderate)
95
% chance of some rain
<40
mm of rainfall expected
18
°C wind chill
9
kph wind from SE

Koya weather for Thursday 18th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 22°C, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and little or no wind of 5 kph from the west.

22
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
7
UV index (High)
80
% chance of some rain
<20
mm of rainfall expected
22
°C wind chill
5
kph wind from W

Koya weather for Friday 19th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 24°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 52% chance of some rain and little or no wind of 6 kph from the north-west.

24
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
52
% chance of some rain
<2
mm of rainfall expected
24
°C wind chill
6
kph wind from NW

Koya weather for Saturday 20th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 22°C, maximum UV of 6 (High) and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 80% chance of some rain and little or no wind of 5 kph from the south-east.