In general, the sun’s light (particularly the UV that causes sunburn) has to pass through a lot more atmosphere (or a greater amount of air mass) in the morning and evening to get to a vertical surface than it does when it is at zenith to a horizontal surface.

Why is the afternoon sun hotter than the morning sun? The sun is always the same temperature. At night it’s shining on the other half of the planet, so the dark side cools down. At dawn and twilight, it’s farther away from where you are than it is at noon.

In morning, sun is at the horizon, therefore sun’s rays travel a longer distance through atmosphere to reach us hence sun seems not so hot, whereas in mid-day, sun is over the head, hence we feel hot .

because in afternoon the earth is mid of the sun and it produces more heat. as we can completely observe that the sun is straight to our head when we walk on the foot path or road. when we keep our hands upon our head it seems to be so hot. therefore afternoon is hotter than morning and evening.

Supply more heat for a couple more hours and the earth’s surface absorbs & retains heat. In short, at 12 noon you feel only the sun’s heat, whereas at 3PM you feel the sun’s heat plus heat which is being given off by the earth. Due to the addition of both, it feels hotter during the late afternoon, than at 12 noon.

The Sun rays are almost vertical. But in the morning and evening, the angle of sun rays is oblique. Slanting rays fall in the morning and evening. As the vertical rays give more heat per unit area, the noon is hotter than morning and evening.

When the sun is close to the horizon, its rays pass through a thicker slice of the atmosphere, which warms the color of sunlight (orange arrow). We define noon sunlight as being neutral white—neither warm nor cool.

Why it is very hot at noon? Noon is hotter than morning because at noon, the sun is vertically over head. There are the vertical rays of the sun at noon and the slanting rays in the morning.

Answer: The hottest time of the day is around 3 p.m. Heat continues building up after noon, when the sun is highest in the sky, as long as more heat is arriving at the earth than leaving. By 3 p.m. or so, the sun is low enough in the sky for outgoing heat to be greater than incoming.

Noon is hotter than morning because at noon, the sun is vertically over head. There are the vertical rays of the sun at noon and the slanting rays in the morning.

In general, the coldest part of the day will be just after sunrise. Though some may believe the coldest time of the day is at midnight, or some time before the sun rises, this is generally not true. The coldest part of the day is usually just after the sun rises.

The Sun rays are almost vertical. But in the morning and evening, the angle of Sun rays is oblique. Slanting rays fall in the morning and evening. As the vertical rays give more heat per unit area, the noon is hotter than morning and evening.

Weather Wise: Here’s why it’s colder in the morning than it was last night. The answer: radiational cooling, a process that allows the ground and the air nearby to cool quickly when certain weather conditions are in place.

One half of the earth is always closer to the sun because Earth is a complete sphere. Its equator is always near to the sun as compared to north pole or south pole.

A. In general, there should be as much solar heat before noon as after noon on any given day, though the sun might well feel hotter in the afternoon because pavements, walls and other objects have been warming up all day and releasing heat.