Weather in Osaka in September
September in Osaka is mild with average temperatures around 22.6°C (72.7°F). Expect significant rainfall with 225mm across approximately 16 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
26.6°C
79.9°F
Low
18.5°C
65.3°F
Precipitation
225 mm
8.8 inches
~16 rainy days
Conditions
Humidity
84%
Comparison to Adjacent Months
September is 3.6°C cooler than August, 47mm wetter than August.
September is 6.0°C warmer than October, 33mm wetter than October.