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why do we experience summer around one side of the sun

We experience summer on “one side” of the Sun because Earth’s axis is tilted, so during part of its orbit one hemisphere leans toward the Sun and gets more direct, longer-lasting sunlight.

Quick Scoop

Not distance, but tilt

Many people think summer happens when Earth is closer to the Sun, but that idea is wrong.

Earth is actually slightly closer to the Sun during Northern Hemisphere winter, so distance cannot explain summer heat.

Earth’s tilt explained

Earth’s spin axis is tilted about 23.5 degrees relative to the flat plane of its orbit around the Sun.

As Earth orbits, that tilted axis keeps pointing in nearly the same direction in space (toward the North Star), so which hemisphere leans toward the Sun slowly changes over the year.

Why that makes summer

When your hemisphere is tilted toward the Sun, two key things happen:

  • The Sun climbs higher in the sky, so its rays hit the ground more directly and concentrate more energy.
  • Days become longer, giving more hours for the surface to warm up.

That combination of high Sun and long days is what you experience as summer.

“One side of the Sun” feeling

From your point of view on Earth, it feels like “this part of the orbit” around the Sun is always linked with summer.

Really, it’s that during that part of the orbit, your hemisphere is the one tilted toward the Sun, while the opposite hemisphere is tilted away and is in winter at the same time.

Flip side for the other hemisphere

Six months later, Earth is on the opposite side of its orbit, so the other hemisphere is tilted toward the Sun.

That is why June is summer in the Northern Hemisphere and winter in the Southern Hemisphere, while December flips those seasons.

TL;DR:
Summer is not about being closer to the Sun; it happens when your hemisphere is tilted toward the Sun, giving you more direct sunlight and longer days during that part of Earth’s path around the Sun.

Information gathered from public forums or data available on the internet and portrayed here.