Will I be hot?
Will I be hot in Lima in July?
Verdict
No — No, comfortable.
Highs cap at 66°F — no heat-management gear needed.
Day vs. night
Day
66°F
Comfortable
A T-shirt and a light overshirt is enough.
Night
59°F
Comfortable
Comfortable outside without an extra layer.
Why
Lima in July averages highs of 66°F, lows of 59°F, 3 rainy days.
Temperature is comfortable across the day; pack for style and weather resistance, not heat management.