You approach him, he's not expecting it, he hasn't had a lot of contact with you, and he wants to say "hi" before moving into the heavy physical. So he moves to the automatic topics - the kids, the news...
Once he feels like he's crossed the threshhold, it isn't needed. Did I get that right?
Maybe that means a little time sitting on the couch listening to music and snuggling first would help him adapt to the changing temperature.