Nagasaki weather in August 2026

Expect daytime maximum temperatures of 31°C in Nagasaki, Japan in August and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 205 mm of rainfall in the month.

  • 31°C maximum daytime temperature in August in Nagasaki31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 17 days with some rainfall in August in Nagasaki17
    17 days with some rainfall
  • 24°C minimum night-time temperature in August in Nagasaki24
    24°C min night temperature
  • 13 hours of daylight per day in August in Nagasaki13
    13 hours of daylight per day
  • Very high heat & humidity in August in NagasakiVH
    Very High heat & humidity
  • 205 mm monthly rainfall in August in Nagasaki205
    205 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in August in Nagasaki11
    11 (Extreme) UV index
  • 27°C sea temperature in August in Nagasaki27
    27°C sea temperature

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The August weather guide for Japan (Nagasaki) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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

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More about Japan

How hot is it in Nagasaki in August?

Daytime temperatures usually reach 31°C in Nagasaki in August with very high heat and humidity, falling to 24°C at night.

How sunny is it in Nagasaki in August?

There are normally 7 hours of bright sunshine each day in Nagasaki in August - that's 51% of daylight hours.

How warm is the sea around Nagasaki in August?

The average sea temperature around Nagasaki in August is 27°C.

Does it rain in Nagasaki in August?

There are usually 17 days with some rain in Nagasaki in August and the average monthly rainfall is 205mm.

What is the chance of a typhoon in Nagasaki in August?

On average 2.3 days in August in Nagasaki are likely to be affected by the passage of one or more tropical storms.

Nagasaki August sunrise & sunset times

Browse the sunrise and sunset times for Nagasaki in August 2026. Select a month to view Nagasaki sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2026 05:34 19:19
Sunday, 16th August 2026 05:44 19:05
Monday, 31st August 2026 05:54 18:47

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