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Japan temperatures in September

September in Japan has maximum daytime temperatures ranging from pleasant in Nemuro with 18°C to very high temperatures in Moriguchi with 30°C. Nighttime temperatures generally drop to 21°C in Moriguchi and 15°C in Nemuro. In September, it is summer.

What is the temperature of the different cities in Japan in September?

Discover the typical September temperatures for the most popular locations of Japan on the map below. Detailed insights are just a click away.

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Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

  • What is the warmest city in September in Japan?
  • According to our recent database analysis, Moriguchi is the warmest city. It experiences an average maximum daytime temperature of approximately 30°C and rarely drops below 21°C during the night.

  • What is the coldest city in September in Japan?
  • For the month of September, Nemuro is the most temperate city in Japan based on our records. With highs averaging 18°C and nighttime temperatures dipping to around 15°C.

  • How much sun does Japan get in September?
  • The city Tokyo usually sees around 128 hours of sunlight, indicating a moderately sunny period.

  • What is the water's temperature in September?
  • The water temperature averages approximately 26°C in Nagasaki this month, an ideal temperature for swimming and cooling off.

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