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.

Sunday
3rd May
19

10

0

3
Monday
4th May
18

7

5

8
Tuesday
5th May
17

5

9

7
Wednesday
6th May
16

7

0

7
Thursday
7th May
20

9

9

8

5-day weather forecast updated at 04:02 on Sunday 3rd 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 Sunday 3rd May 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 99% chance of some rain and a gentle breeze of 13 kph from the south.

19
°C maximum temperature
10
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
3
UV index (Moderate)
99
% chance of some rain
<20
mm of rainfall expected
19
°C wind chill
13
kph wind from S

Koya weather for Monday 4th May 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 18°C, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 35% chance of some rain and a gentle breeze of 15 kph from the west.

18
°C maximum temperature
7
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
35
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
15
kph wind from W

Koya weather for Tuesday 5th May 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 17°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north.

17
°C maximum temperature
5
°C minimum temperature
scattered clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
6
kph wind from N

Koya weather for Wednesday 6th May 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 16°C, maximum UV of 7 (High) and no hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south-east.

16
°C maximum temperature
7
°C minimum temperature
broken clouds
0
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
4
kph wind from SE

Koya weather for Thursday 7th May 2026

Expect scattered clouds in Koya, Japan with a maximum temperature of 20°C, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north-west.