Koya weather live forecast

Today's maximum temperature in Koya is expected to be 7°C. Select a day from the live weather forecast for Koya, Japan for more weather parameters.

Monday
29th Dec
7

-3

8

2
Tuesday
30th Dec
8

1

1

2
Wednesday
31st Dec
4

-3

3

3
Thursday
1st Jan
0

-4

4

2
Friday
2nd Jan
0

-5

2

2

5-day weather forecast updated at 04:03 on Saturday 27th December 2025 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 Monday 29th December 2025

Expect scattered clouds in Koya, Japan with a maximum temperature of 7°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south-west.

7
°C maximum temperature
-3
°C minimum temperature
scattered clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
5
kph wind from SW

Koya weather for Tuesday 30th December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 8°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the west.

8
°C maximum temperature
1
°C minimum temperature
broken clouds
1
hour of sunshine
2
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
7
kph wind from W

Koya weather for Wednesday 31st December 2025

Expect broken clouds in Koya, Japan with a maximum temperature of 4°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the north-west.

4
°C maximum temperature
-3
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
1
°C wind chill
9
kph wind from NW

Koya weather for Thursday 1st January 2026

Expect clear skies with flurries of snow in Koya, Japan with a maximum temperature of 0°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 32% chance of some snow and a light breeze of 10 kph from the north-west.

0
°C maximum temperature
-4
°C minimum temperature
clear skies with flurries of snow
4
hours of sunshine
2
UV index (Low)
32
% chance of some snow
<2
cm of snow expected
-3
°C wind chill
10
kph wind from NW

Koya weather for Friday 2nd January 2026

Expect mostly cloudy with light snow in Koya, Japan with a maximum temperature of 0°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 31% chance of some snow and a light breeze of 11 kph from the north-west.