Seasons result from the yearly revolution of the Earth around the Sun AND the tilt of the Earth's axis.

In temperate and polar regions, the seasons are marked by changes in the intensity of sunlight that reaches the Earth's surface.
During May, June and July, the northern hemisphere is exposed to more direct sunlight because the hemisphere faces the sun. The same is true of the southern hemisphere in November, December and January.

June, July and August are the hottest months in the northern hemisphere and December, January and February are the hottest months in the southern hemisphere.

Click here to learn more about why we have seasons