Koya weather live forecast

Today's maximum temperature in Koya is expected to be 17°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Tuesday
27th Oct
17

10

4

5
Wednesday
28th Oct
10

3

4

3
Thursday
29th Oct
16

2

6

5
Friday
30th Oct
15

9

0

4
Saturday
31st Oct
14

7

5

4

5-day weather forecast updated at 04:02 on Tuesday 27th October 2026 GMT

More about Koya

Koya by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Japan

Fred Olsen: Top cruise offers for 2026/2027

Sale

Explore latest offers on Fred Olsen Cruises in 2026/2027
Find last minute deals or early bird discounts
Filter offers by price, destination, ship & departure point

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

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 27th October 2026

Expect mostly cloudy with rain in Koya, Japan with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 76% chance of some rain and a gentle breeze of 14 kph from the north-west.

17
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
5
UV index (Moderate)
76
% chance of some rain
<10
mm of rainfall expected
17
°C wind chill
14
kph wind from NW

Koya weather for Wednesday 28th October 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 10°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

10
°C maximum temperature
3
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
8
°C wind chill
14
kph wind from N

Koya weather for Thursday 29th October 2026

Expect broken clouds in Koya, Japan with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south.

16
°C maximum temperature
2
°C minimum temperature
broken clouds
6
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
16
°C wind chill
4
kph wind from S

Koya weather for Friday 30th October 2026

Expect cloudy with some rain in Koya, Japan with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 87% chance of some rain and little or no wind of 5 kph from the south.

15
°C maximum temperature
9
°C minimum temperature
cloudy with some rain
0
hours of sunshine
4
UV index (Moderate)
87
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
5
kph wind from S

Koya weather for Saturday 31st October 2026

Expect sunshine and showers in Koya, Japan with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a gentle breeze of 13 kph from the north-west.