Asking about the climate in Vietnam

Yes, most of Vietnam's territory is located in subtropical and tropical areas. Closer to the equator. The annual average temperature is above 20 degrees. The highest may reach about 40.

But now China students are mostly in Hanoi and Haiphong. And Saigon (Ho Chi Minh City). Except that there may be four seasons in Hanoi near China in the north, there are only rainy and dry seasons in other places. The rainy season is heavy and humid. The air is particularly dry and sultry in dry season, so you should pay attention to sun protection. June is a dry season for you.