Weather in Mexico City in September
September in Mexico City is mild enough that walking is the default. This is a city-break month more than a sea-holiday month.
In Mexico, this is how Mexico City actually wears September, not how a country centroid would. Compared with May and January, September sits in the middle of Mexico City's year.
- Average temp
- 19°C
13–24°C
- Rainfall
- 144 mm
Showers likely
- Sunshine
- 4.9 h
hours per day
What to expect
Daytime
Mild afternoons in Mexico City are the prize in September. You can eat outside on the good days. You still want something for the breeze.
This is walking weather. Shade is useful, not essential the way it is in the hot months. A long outdoor day is a reasonable plan.
Rain
September is a wetter month in Mexico City. Showers are part of the deal, not a spoiled surprise.
Waterproof shoes matter more than a rain plan for a beach, especially if a beach is not why you came. Build indoor hours into the afternoon.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Rain jacket
A layer for cooler evenings
Where to stay in Mexico City
Dates are a starting point for September.
Travel guides for Mexico City
What to read before you book.
Average weather in Mexico City
TemperatureRainfall
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FAQs about Mexico City
Climate averages for Mexico City, 1991–2020.
The best time to visit Mexico City is between February and May, the most comfortable stretch of the year on these averages.
April is the hottest month, with an average around 21°C.
August is the wettest month, with about 186 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
