Because the hemisphere is closest to the sun during this month
Boreal summer refers to the summer in the northern hemisphere. Boreal summer months are June, July, August, and September. By definition a country is not a month so I am not sure how to answer the question. I would say that no country is a boreal summer month.
June
June
it is not countries it is only one country and it is Antarctica and the reason for that is because the earth tilts on its axis so while all the other countries at the Southern Hemisphere experiences summer the Northern Hemisphere is experiencing winter
June July and august
June.
June
summer end in month of june and coolg starts from the next month
spring going into summer, it is a warm month
Summer is starting on June 21st
june july august