Summer is just awful, I'm in Australia so it gets pretty damn hot.
I feel like Summer is considered a "happy" season and everyone is friendly and socialising and maybe that is one of the reasons I don't like it, there's too much pressure to be some easy going, fun person and being moody or depressed doesn't fit in when the sun is shining.

Winter is lovely and cold, you can snuggle up at home and keep warm, and if you feel depressed it seems to be more acceptable than, which I guess kind of makes it easier to deal with and not so bad for me.

It's Summer here. I'm starting to get bad again..