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.

5-day weather forecast updated at 04:02 on Thursday 18th September 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 September 2025

Expect scattered clouds in Nagasaki, Japan with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 7 kph from the North-East7
    kph wind from NE

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Nagasaki weather for Saturday 20th September 2025

Expect isolated thunderstorms in Nagasaki, Japan with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 91% chance of some rain and a gentle breeze of 13 kph from the south-west.

  • 30°C maximum temperature30
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 91% chance of some rain91
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 13 kph from the South-West13
    kph wind from SW

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Nagasaki weather for Sunday 21st September 2025

Expect isolated thunderstorms in Nagasaki, Japan with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 10% chance of some rain and a gentle breeze of 15 kph from the north-east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 10% chance of some rain10
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 15 kph from the North-East15
    kph wind from NE

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Nagasaki weather for Monday 22nd September 2025

Expect mostly cloudy with light rain in Nagasaki, Japan with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 13 kph from the north-east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 23°C minimum temperature23
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 25% chance of some rain25
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 13 kph from the North-East13
    kph wind from NE

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Nagasaki weather for Tuesday 23rd September 2025

Expect sunshine and showers in Nagasaki, Japan with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 39% chance of some rain and a light breeze of 8 kph from the north-east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 23°C minimum temperature23
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 39% chance of some rain39
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 8 kph from the North-East8
    kph wind from NE

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Metric (°C / mm)  |  Imperial (°F / inches)

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