Koya weather live forecast

Today's maximum temperature in Koya is expected to be 18°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Monday
26th Oct
18

15

1

2
Tuesday
27th Oct
16

10

2

5
Wednesday
28th Oct
11

4

3

3
Thursday
29th Oct
17

3

4

5
Friday
30th Oct
16

11

0

5

5-day weather forecast updated at 04:02 on Monday 26th 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 Monday 26th October 2026

Expect cloudy with some rain in Koya, Japan with a maximum temperature of 18°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 20-30 mm of rainfall expected with 97% chance of some rain and a light breeze of 7 kph from the south-east.

18
°C maximum temperature
15
°C minimum temperature
cloudy with some rain
1
hour of sunshine
2
UV index (Low)
97
% chance of some rain
<30
mm of rainfall expected
18
°C wind chill
7
kph wind from SE

Koya weather for Tuesday 27th October 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a gentle breeze of 14 kph from the north-west.

16
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
5
UV index (Moderate)
52
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
14
kph wind from NW

Koya weather for Wednesday 28th October 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

11
°C maximum temperature
4
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from N

Koya weather for Thursday 29th October 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south.

17
°C maximum temperature
3
°C minimum temperature
broken clouds
4
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
17
°C wind chill
4
kph wind from S

Koya weather for Friday 30th October 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 74% chance of some rain and little or no wind of 5 kph from the south.