Koya weather live forecast

Today's maximum temperature in Koya is expected to be 15°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Monday
17th Nov
15

3

6

3
Tuesday
18th Nov
6

2

3

2
Wednesday
19th Nov
5

0

3

2
Thursday
20th Nov
8

-1

3

3
Friday
21st Nov
8

1

4

3

5-day weather forecast updated at 04:04 on Monday 17th November 2025 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 17th November 2025

Expect scattered clouds in Koya, Japan with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the north-west.

15
°C maximum temperature
3
°C minimum temperature
scattered clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
15
°C wind chill
9
kph wind from NW

Koya weather for Tuesday 18th November 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 6°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north-west.

6
°C maximum temperature
2
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
14
kph wind from NW

Koya weather for Wednesday 19th November 2025

Expect cloudy with sleet or snow in Koya, Japan with a maximum temperature of 5°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 2-5 mm of sleet/snow expected with 12% chance of some sleet or snow and a light breeze of 10 kph from the north.

5
°C maximum temperature
0
°C minimum temperature
cloudy with sleet or snow
3
hours of sunshine
2
UV index (Low)
12
% chance of some sleet or snow
<5
mm of sleet/snow expected
2
°C wind chill
10
kph wind from N

Koya weather for Thursday 20th November 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 8°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the west.

8
°C maximum temperature
-1
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
7
°C wind chill
6
kph wind from W

Koya weather for Friday 21st November 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 8°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.

8
°C maximum temperature
1
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
7
°C wind chill
11
kph wind from NW

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Metric (°C / mm) | Imperial (°F / inches)

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Japan - quick facts
Flight time^✝	11.5 to 15 hours
Time difference	UK +9 hours
Language(s)	Japanese
Currency	Japanese Yen
Electricity	A + B plug (100V)
Driving side	Left
Why visit?	Culture Nature Nightlife
Tourist info	Japan National Tourism Organization