Osaka Weather in September
In September, Osaka averages a high of 29°C (84°F) and a low of 21°C (70°F), from 55 years of daily records (1971–2026).
29°C
Average high
84°F
21°C
Average low
70°F
36°C
Record high
97°F · September 5, 2010
13°C
Record low
55°F · September 27, 1992
What September Is Like in Osaka
- 5 of the 10 warmest Septembers on record in Osaka have come since 2012.
- September in Osaka has become 1.6°C (2.9°F) warmer on average: the 2012–2026 average against 1970–1989.
- The coldest September reading, 13°C (55°F) on September 27, 1992, has not been matched in 34 years.
- A typical September brings 0.7 days above 35°C (95°F).
At least 1 mm of rain falls on 38% of September days, and the month averages 166 mm in total.
Warmest: 2024 (33.3°C)Latest: 2026 (27.9°C)10-year averageLong-run average (29.2°C)
Look Up a Day in September
See the weather in Osaka on any September date, year by year.
Source: NOAA GHCN-Daily, Osaka (1973–2026); Kobe (1971–2025). Averages cover 1971–2026. How we compute this