Koya weather live forecast

Today's maximum temperature in Koya is expected to be 22°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Tuesday
7th Jul
22

18

2

8
Wednesday
8th Jul
24

17

4

7
Thursday
9th Jul
25

16

7

6
Friday
10th Jul
26

16

8

9
Saturday
11th Jul
26

18

6

9

5-day weather forecast updated at 04:03 on Monday 6th July 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 7th July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 22°C, maximum UV of 8 (Very High) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 69% chance of some rain and little or no wind of 4 kph from the south-east.

22
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
8
UV index (Very High)
69
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
4
kph wind from SE

Koya weather for Wednesday 8th July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 24°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 50% chance of some rain and little or no wind of 3 kph from the south-east.

24
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
50
% chance of some rain
<2
mm of rainfall expected
24
°C wind chill
3
kph wind from SE

Koya weather for Thursday 9th July 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 25°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and little or no wind of 4 kph from the south-east.

25
°C maximum temperature
16
°C minimum temperature
sunshine and showers
7
hours of sunshine
6
UV index (High)
30
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
4
kph wind from SE

Koya weather for Friday 10th July 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south-east.

26
°C maximum temperature
16
°C minimum temperature
broken clouds
8
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
4
kph wind from SE

Koya weather for Saturday 11th July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and little or no wind of 4 kph from the west.