Koya weather live forecast

Today's maximum temperature in Koya is expected to be 21°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Thursday
25th Jun
21

17

0

1
Friday
26th Jun
21

17

1

3
Saturday
27th Jun
21

16

0

5
Sunday
28th Jun
23

16

2

7
Monday
29th Jun
23

15

8

10

5-day weather forecast updated at 04:03 on Wednesday 24th 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 Thursday 25th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 21°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 50 mm or more of rainfall expected with 100% chance of some rain and a light breeze of 10 kph from the south-west.

21
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
1
UV index (Low)
100
% chance of some rain
>50
mm or more of rainfall expected
21
°C wind chill
10
kph wind from SW

Koya weather for Friday 26th June 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 50 mm or more of rainfall expected with 100% chance of some rain and a light breeze of 7 kph from the south.

21
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
3
UV index (Moderate)
100
% chance of some rain
>50
mm or more of rainfall expected
21
°C wind chill
7
kph wind from S

Koya weather for Saturday 27th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 76% chance of some rain and little or no wind of 6 kph from the north-west.

21
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
5
UV index (Moderate)
76
% chance of some rain
<40
mm of rainfall expected
0
no heat & humidity
6
kph wind from NW

Koya weather for Sunday 28th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 23°C, maximum UV of 7 (High) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 37% chance of some rain and little or no wind of 5 kph from the north-west.

23
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
7
UV index (High)
37
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
5
kph wind from NW

Koya weather for Monday 29th June 2026

Expect isolated thunderstorms in Koya, Japan with a maximum temperature of 23°C, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 41% chance of some rain and little or no wind of 4 kph from the north-west.