Mexico City edges it in September. Mexico City averages 13–24°C with medium crowds; Tulum 21–32°C with low crowds.
By Daan · Last reviewed October 2026
Mexico City and Tulum
The verdict for September
Rain tapers, flags come out
+Rain tapers off, and Independence Day (Sept 15–16) brings real local energy to the Zócalo.
–El Grito night packs the historic center — plan around it if crowds aren't your thing.
A transitional month with one spectacular, loud night in the middle of it.
Quiet, hot, and very tropical
+Very few crowds
–Wet-season weather
September is among the quietest periods in Tulum, with lower visitor numbers and generally better value. It is also one of the wettest months, with high humidity and less predictable beach weather.
Scores and crowd levels are my own judgement; temperatures are monthly averages. Higher scores are better: quieter, cheaper and more pleasant.
Another month