Nagasaki weather live forecast

Today's maximum temperature in Nagasaki is expected to be 18°C. Select a day from the live weather forecast for Nagasaki, Japan for more weather parameters.

Friday
19th Dec
18

8

4

2
Saturday
20th Dec
18

14

2

3
Sunday
21st Dec
16

7

4

2
Monday
22nd Dec
13

7

5

3
Tuesday
23rd Dec
16

6

7

3

5-day weather forecast updated at 04:02 on Friday 19th December 2025 GMT

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The 5-day weather forecast for Japan (Nagasaki) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Nagasaki weather forecast by day

Below are the detailed weather forecasts for Nagasaki for the next 5 days.

Nagasaki weather for Friday 19th December 2025

Expect broken clouds in Nagasaki, Japan with a maximum temperature of 18°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-east.

18
°C maximum temperature
8
°C minimum temperature
broken clouds
4
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
18
°C wind chill
8
kph wind from SE

Nagasaki weather for Saturday 20th December 2025

Expect mostly cloudy with rain in Nagasaki, Japan with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 97% chance of some rain and a light breeze of 8 kph from the south.

18
°C maximum temperature
14
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
3
UV index (Moderate)
97
% chance of some rain
<20
mm of rainfall expected
18
°C wind chill
8
kph wind from S

Nagasaki weather for Sunday 21st December 2025

Expect isolated thunderstorms in Nagasaki, Japan with a maximum temperature of 16°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 27% chance of some rain and a gentle breeze of 16 kph from the north.

16
°C maximum temperature
7
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
2
UV index (Low)
27
% chance of some rain
<2
mm of rainfall expected
16
°C wind chill
16
kph wind from N

Nagasaki weather for Monday 22nd December 2025

Expect scattered clouds in Nagasaki, Japan with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.

13
°C maximum temperature
7
°C minimum temperature
scattered clouds
5
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from NE

Nagasaki weather for Tuesday 23rd December 2025

Expect broken clouds in Nagasaki, Japan with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the east.