Even though it usually is the start of my SAD, I like October the best. I think I'm one of the only people in the world that likes that it gets darker sooner. There's something cozy about it. I like the aesthetic of the month, too.
February is hands down my least favorite time of the year. Winter is at its harshest and bleakest where I live, and my anxiety and depression are usually in full swing. Late August is my second least-favorite period.