Weather in Mexico in September

September in Mexico is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.

A country pin in September is a warning: one region of Mexico will not match another. Use a city page if you already know where you are going. Compared with June and January, September sits in the middle of Mexico's year.

Average temp: 17°C
11–24°C

Rainfall: 106 mm
Showers likely

Sunshine: 7 h
hours per day

What to expect

Daytime

Warm days in Mexico in September. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.

You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.

Rain

September is the wet side of the year in Mexico. Days can be heavy. Plans that cannot survive rain are the wrong plans.

This is not a reason to skip Mexico if you like the place. It is a reason to pack for weather and to stop treating every grey hour as a failed holiday.