The climate of Hanoi in march is tolerable The weather in march in Hanoi is wet (with 69mm of rainfall over 13 days). It should be noted a worsening from the previous month since in february there is an average of 30mm of precipitation over 9 days.
But then, from the other aspect, Nor is it even necessary to coach. You can coach locally without any degrees; but most fields or sports bodies still run a body of simple coaching courses and qualifications, so that you don't have to have a full, proper college degree or education to coach young people in a sport.
The type of degree is not as important as the resume you compile. Coaches will have degrees that run the range of what universities offer including English, Business Management, Poly Sci. Most coaches will either play football at the next level (NFL or CFL) or become Graduate assistants and work their way up from there.