Pack or skip
Insect repellent for Mexico City in July
Verdict
Pack it
Warm (74°F) plus 18 rainy days = mosquito conditions.
Why
Mexico City in July averages highs of 74°F, lows of 53°F, 18 rainy days.
That climate means insect repellent earns its space in the bag. Warm (74°F) plus 18 rainy days = mosquito conditions.