The phrase "midday heat" refers to the intense heat and warmth experienced during the middle of the day, usually when the sun is at its highest point in the sky. Full definition
For instance, fly in the morning or evening during the summer months to avoid midday heat. (flydenver.com)
They require loose, rocky slopes, which offer a somewhat cooler refuge during midday heat and a place to hide from predators. (pikaworks.com)
During the dry season temperatures vary between 0 ° and 28 ° C. mornings and evenings are colder while at midday the heat can be intense with very clear skies. (machupicchubesttours.com)