Comparable to the greatest distance, 152.6 million km in July, which astronomers call aphelion. Perihelion always occurs on or near January 4th, while aphelion lands near the 4th of July. Throughout the year, Earth's distance from the Sun does not change much. However, there are measurable differences in solar heating that result from our planet's slightly elliptical orbit. The fact that the northern hemisphere of Earth has more land, while the southern hemisphere has more water, tends to moderate the impact of differences in sunlight between perihelion and aphelion.
Sunlight raises the temperature of continents more than it does oceans.
In July, the northern half of our planet is tilted toward the Sun. Aphelion sunlight is a little weaker than sunlight at other times of the year, but still does a thorough job of heating the continents. According to climate scientists, northern summer in July, when the Sun is farther away than usual, is a bit warmer than its southern counterpart in January. Planets move more slowly at aphelion than they do at perihelion, therefore, seasons occurring near aphelion last longer. Northern summer on Earth is two days longer than northern winter for the same reason.