Pack or skip
Sunscreen for Mexico City in January
Verdict
Pack it
Sun still finds you at 72°F — UV doesn't care about temperature.
Why
Mexico City in January averages highs of 72°F, lows of 45°F, 3 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 72°F — UV doesn't care about temperature.