Does this heat up the planet globally? Yes, slightly. But the effect is overwhelmed by the seasonal tilt in the Northern Hemisphere, where most of the planet’s landmass resides. In fact, because of perihelion, Southern Hemisphere summers are slightly more intense than Northern Hemisphere summers, and Southern Hemisphere winters are slightly milder.
The increased proximity to the Sun during perihelion does have some effects on the Earth's climate. However, these effects are relatively minor compared to the dominant factors that shape our climate, such as the tilt of the Earth's axis and the distribution of land and sea. during which month is the earth closest to the sun link
explains why distance does not cause seasons, focusing instead on the impact of Earth's axial tilt. National Weather Service Does this heat up the planet globally
Approximately 93 million miles (150 million kilometers). In fact, because of perihelion, Southern Hemisphere summers
Earth is closest to the Sun in early January each year (perihelion). Perihelion typically occurs around January 3–5; aphelion (farthest point) occurs in early July.