The continents of North America and Europe are the only two continents that lie completely within the Northern Hemisphere. Also located in the Northern Hemisphere are about two-thirds of the African continent, most of Asia and the northern most section of South America.
Directly below 0 degrees latitude lies the Southern Hemisphere, which holds most of South America's land mass, a small amount of Asian islands, Australia, around one-third of Africa and the entire freezing continent of Antarctica. Climates vary between the Northern and Southern Hemispheres, with the hotter summer months in the Northern Hemisphere beginning in June and ending in September. The Southern Hemisphere experiences its hot summers from December until the end of March.