My favorite is summer. I do not like the cold at all. I even use a comforter in the summertime for sleeping & sometimes I have my heater on! I'm in Michigan, USA & it's finally warming up here.
I envy those that live year round in a warmer climate. I would love to move but my family is here!
For me it would have to be spring which is my favorite, the lighter nights, flowers growing, leaves on trees, and the warmer days are just perfect. I don't do well in heat at all and during spring I find that it's just right and I can cope with the humidity then.