The reason why the average summer temperature in the Southern chemosphere is cooler than the average summer in the Northern hemisphere is that over 80% of the Southern Hemisphere is covered with water.
Over 80% of the Southern Hemisphere is made up of water in the form of the Atlantic, Pacific, and Indian Oceans. This leads to the southern hemisphere having lower temperatures in the summer which makes them cooler.
The reason this happens is that water absorbs temperatures and makes the surrounding areas cooler. This is why places closer to the coast are cooler than areas further inland.
The Northern hemisphere is not as covered by oceans as the southern hemisphere thanks to larger expanse of land occupied by the Asian continent and further by Europe and North America.
As a result, summers are warmer on average there than in the Southern hemisphere.
Find out more on temperatures in the Southern hemisphere at https://brainly.com/question/15648173
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