He's old enough to fend for himself.
The most I would do is give him this advice; "Son, this is a good time for you to learn to recognize the path of least resistance." In his case, that probably means leaving the house to do something. He might as well get some practice in now for a life long skill.
Fly fishing come to mind. Cold? Ice on the creeks? Windy? None of that has anything to do with "going fishing".