Will I be hot?
Will I be hot in Mexico City in May?
Verdict
Maybe — Warm at times.
Highs around 78°F — comfortable in shade, warm in direct sun. Big diurnal swing (25°F) — cool evenings save the day.
Day vs. night
Day
78°F
Warm
Breathable fabrics; sunscreen matters more than a jacket.
Night
53°F
Cool
You'll want a warm layer after sunset — not a heavy coat.
Why
Mexico City in May averages highs of 78°F, lows of 53°F, 10 rainy days.
Bring a light layer for the shade and a hat for the sun — the difference between them can feel like 15°F.
The day-to-night temperature swing is 25°F, which is the real story here — the average number hides how different midday and midnight feel.
See a full outfit plan for warm afternoons →
Mexico City in May outfit ideas from ForecastStyle.