[MMM]

You can choose what type of environment you want to live in on the application.

Pretty much any place south of Hokkaido is "warmer". I don't think that will be the problem.

I am curious, however, if they will hire a single parent with a child. JET is essentially designed for single people. It is a one-way exchange program. Therefore there is a plane ticket for you, a single apartment, etc. set up in advance for a single person. There are times when you will need to stay overnight at places outside of home (like the renewer's conference), and these situations are not designed for children.

I realize that may be sound like a form of discrimination, and maybe it is, but unfortunately I can imagine the hiring committee thinking bringing a child is going to cause a lot of headaches for the school you are placed in. Naturally you are going to need assistance with school for your child, daycare,a pediatrician, etc. This may work against you.