Koya weather live forecast

Today's maximum temperature in Koya is expected to be 20°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Saturday
24th Oct
20

17

1

3
Sunday
25th Oct
21

18

1

3
Monday
26th Oct
20

17

0

1
Tuesday
27th Oct
19

10

1

3
Wednesday
28th Oct
10

4

3

5

5-day weather forecast updated at 04:02 on Friday 23rd October 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 Saturday 24th October 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 75% chance of some rain and a light breeze of 8 kph from the south.

20
°C maximum temperature
17
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
3
UV index (Moderate)
75
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
8
kph wind from S

Koya weather for Sunday 25th October 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 91% chance of some rain and a light breeze of 7 kph from the south-west.

21
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
3
UV index (Moderate)
91
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
7
kph wind from SW

Koya weather for Monday 26th October 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 20°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 40-50 mm of rainfall expected with 93% chance of some rain and a light breeze of 7 kph from the south.

20
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
1
UV index (Low)
93
% chance of some rain
<50
mm of rainfall expected
20
°C wind chill
7
kph wind from S

Koya weather for Tuesday 27th October 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 75% chance of some rain and a gentle breeze of 14 kph from the north-west.

19
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
3
UV index (Moderate)
75
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
14
kph wind from NW

Koya weather for Wednesday 28th October 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 10°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 27% chance of some rain and a gentle breeze of 13 kph from the north.