Koya weather live forecast

Today's maximum temperature in Koya is expected to be 22°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Tuesday
30th Jun
22

17

3

7
Wednesday
1st Jul
22

17

0

2
Thursday
2nd Jul
22

19

2

3
Friday
3rd Jul
23

19

1

5
Saturday
4th Jul
22

18

3

4

5-day weather forecast updated at 04:02 on Monday 29th June 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 30th June 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 22°C, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 49% chance of some rain and little or no wind of 3 kph from the west.

22
°C maximum temperature
17
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
7
UV index (High)
49
% chance of some rain
<2
mm of rainfall expected
22
°C wind chill
3
kph wind from W

Koya weather for Wednesday 1st July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 22°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 71% chance of some rain and little or no wind of 5 kph from the south.

22
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
2
UV index (Low)
71
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
5
kph wind from S

Koya weather for Thursday 2nd July 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 40-50 mm of rainfall expected with 95% chance of some rain and a light breeze of 7 kph from the south-west.

22
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
3
UV index (Moderate)
95
% chance of some rain
<50
mm of rainfall expected
22
°C wind chill
7
kph wind from SW

Koya weather for Friday 3rd July 2026

Expect overcast skies in Koya, Japan with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the west.

23
°C maximum temperature
19
°C minimum temperature
overcast skies
1
hour of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
23
°C wind chill
4
kph wind from W

Koya weather for Saturday 4th July 2026

Expect mostly cloudy with light rain in Koya, Japan with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 60% chance of some rain and little or no wind of 5 kph from the north-west.