Tokyo Weather in September
In September, Tokyo averages a high of 27°C (81°F) and a low of 21°C (69°F), from 53 years of daily records (1971–2026).
27°C
Average high
81°F
21°C
Average low
69°F
38°C
Record high
101°F · September 3, 1984
13°C
Record low
56°F · September 27, 1980
What September Is Like in Tokyo
- September 2025 was the 3rd warmest September in 53 years of records, 2.8°C (5.0°F) above the long-run average.
- September in Tokyo has become 1.7°C (3.1°F) warmer on average: the 2011–2025 average against 1970–1989.
- 5 of the 10 warmest Septembers on record in Tokyo have come since 2011.
- The September heat record, 38°C (101°F) on September 3, 1984, has stood for 42 years.
At least 1 mm of rain falls on 43% of September days, and the month averages 204 mm in total.
Warmest: 2023 (32.1°C)Latest: 2025 (29.8°C)10-year averageLong-run average (27.4°C)
Look Up a Day in September
See the weather in Tokyo on any September date, year by year.
Source: NOAA GHCN-Daily, Tokyo (1971–2025); Yokohama (1990–2026). Averages cover 1971–2026. How we compute this