When Earth Is Closest To The Sun -

Aphelion: Earth is approximately 94.5 million miles from the sun (occurring in early July). When Does It Happen?

While the change in distance isn't the primary driver of the seasons, it does have measurable effects on our planet’s movement and climate: Orbital Speed when earth is closest to the sun

If you'd like to dive deeper into how this affects specific regions, I can provide: Comparison of summer intensity. The exact date and time of the next perihelion. Aphelion: Earth is approximately 94