The climate in Mexico City during September can be summarized as mild and damp.
September is in the fall / autumn in Mexico City and is typically the 6th warmest month of the year. Daytime maximum temperatures average around 23°C (74°F), whilst at night 11°C (52°F) is normal.
|Daytime temperature||23.2°C 73.7°F|
|Nightly temperature||10.9°C 51.5°F|
|Average temperature||17°C 62.6°F|
|Daily sunshine||4.6 hrs|
|Avg rainfall||109 mm 4.3 ins|
|Rainy days||16 days|
|Sea temperature||29.4°C 84.9°F|
|Windspeed||5.8kph 4 mph|
On average September is the 3rd wettest month of the year in Mexico City with around 109mm 4.3 inches of rain making it a damp time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.6 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in September 2019.
|Hottest month:||May||26.5°C 79.7°F|
|Driest month:||February||4mm 0.2ins|
|Coldest month:||January||21.8°C 71.2°F|
|Wettest month:||July||131mm 5.2ins|