Will I be hot?
Will I be hot in Mexico City in September?
Verdict
Maybe — Warm at times.
Highs around 73°F — comfortable in shade, warm in direct sun.
Day vs. night
Day
73°F
Warm
Breathable fabrics; sunscreen matters more than a jacket.
Night
52°F
Cool
You'll want a warm layer after sunset — not a heavy coat.
Why
Mexico City in September averages highs of 73°F, lows of 52°F, 15 rainy days.
Bring a light layer for the shade and a hat for the sun — the difference between them can feel like 15°F.
See a full outfit plan for warm afternoons →
Mexico City in September outfit ideas from ForecastStyle.