Weather in Chennai in September
September in Chennai is warm with average temperatures around 28.6°C (83.5°F). Expect significant rainfall with 145mm across approximately 20 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
31.9°C
89.4°F
Low
25.3°C
77.5°F
Precipitation
145 mm
5.7 inches
~20 rainy days
Conditions
Humidity
77%
Comparison to Adjacent Months
September is 119mm drier than October.