Nikko weather in September 2026

Expect daytime maximum temperatures of 20°C in Nikko, Japan in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 22 days with some rainfall and typically 285 mm of rainfall in the month.

  • 20°C maximum daytime temperature in September in Nikko20
    20°C max day temperature
  • 4 hours of sunshine per day
  • 22 days with some rainfall in September in Nikko22
    22 days with some rainfall
  • 12°C minimum night-time temperature in September in Nikko12
    12°C min night temperature
  • 12 hours of daylight per day in September in Nikko12
    12 hours of daylight per day
  • No heat & humidity in September in Nikko0
    No heat & humidity
  • 285 mm monthly rainfall in September in Nikko285
    285 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Nikko8
    8 (Very High) UV index

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The September weather guide for Japan (Nikko) 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 Nikko in September?

Daytime temperatures usually reach 27°C in Nikko in September with low heat and humidity, falling to 20°C at night.

How sunny is it in Nikko in September?

There are normally 4 hours of bright sunshine each day in Nikko in September - that's 31% of daylight hours.

How warm is the sea around Nikko in September?

The average sea temperature around Nikko in September is 25°C.

Does it rain in Nikko in September?

There are usually 19 days with some rain in Nikko in September and the average monthly rainfall is 181mm.

What is the chance of a typhoon in Nikko in September?

On average 1.4 days in September in Nikko are likely to be affected by the passage of one or more tropical storms.

Nikko September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:12 18:11
Tuesday, 15th September 2026 05:23 17:50
Wednesday, 30th September 2026 05:36 17:27

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