Weather in Mexico City in September
September in Mexico City is cool with average temperatures around 14.9°C (58.8°F). Expect significant rainfall with 148mm across approximately 26 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
20.2°C
68.4°F
Low
9.6°C
49.3°F
Precipitation
148 mm
5.8 inches
~26 rainy days
Conditions
Humidity
82%
Comparison to Adjacent Months
September is 84mm wetter than October.