Koya weather live forecast

Today's maximum temperature in Koya is expected to be 27°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Tuesday
4th Aug
27

19

5

8
Wednesday
5th Aug
27

19

7

8
Thursday
6th Aug
27

22

6

10
Friday
7th Aug
27

21

5

8
Saturday
8th Aug
28

20

7

9

5-day weather forecast updated at 04:02 on Tuesday 4th August 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 4th August 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south-east.

27
°C maximum temperature
19
°C minimum temperature
broken clouds
5
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
5
kph wind from SE

Koya weather for Wednesday 5th August 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the east.

27
°C maximum temperature
19
°C minimum temperature
broken clouds
7
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
8
kph wind from E

Koya weather for Thursday 6th August 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

27
°C maximum temperature
22
°C minimum temperature
broken clouds
6
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from E

Koya weather for Friday 7th August 2026

27
°C maximum temperature
21
°C minimum temperature
broken clouds
5
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from SE

Koya weather for Saturday 8th August 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 62% chance of some rain and a light breeze of 8 kph from the south-east.