Nagasaki weather live forecast

Today's maximum temperature in Nagasaki is expected to be 31°C. Select a day from the live weather forecast for Nagasaki, Japan for more weather parameters.

Tuesday
18th Aug
31

26

10

9
Wednesday
19th Aug
34

26

8

10
Thursday
20th Aug
33

27

8

7
Friday
21st Aug
32

27

6

9
Saturday
22nd Aug
31

27

7

1

5-day weather forecast updated at 04:01 on Monday 17th August 2026 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 Tuesday 18th August 2026

Expect isolated thunderstorms in Nagasaki, Japan with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 5% chance of some rain and a light breeze of 8 kph from the south.

31
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
10
hours of sunshine
9
UV index (Very High)
5
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from S

Nagasaki weather for Wednesday 19th August 2026

Expect isolated thunderstorms in Nagasaki, Japan with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and little or no wind of 6 kph from the east.

34
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
10
UV index (Very High)
20
% chance of some rain
<2
mm of rainfall expected
H
high heat & humidity
6
kph wind from E

Nagasaki weather for Thursday 20th August 2026

Expect isolated thunderstorms in Nagasaki, Japan with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 49% chance of some rain and little or no wind of 6 kph from the east.

33
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
7
UV index (High)
49
% chance of some rain
<5
mm of rainfall expected
H
high heat & humidity
6
kph wind from E

Nagasaki weather for Friday 21st August 2026

Expect isolated thunderstorms in Nagasaki, Japan with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 57% chance of some rain and little or no wind of 6 kph from the south-east.

32
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
57
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
6
kph wind from SE

Nagasaki weather for Saturday 22nd August 2026

Expect isolated thunderstorms in Nagasaki, Japan with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 52% chance of some rain and a light breeze of 8 kph from the south.