I prefer 
Summer, since I'm usually cold.  IIRC, my natural body temp is 97.6F, which is a degree colder than most humans.  (Maybe I'm not human!  

 MIB, come and fite me!)  
So, when it gets hot outside, I open the windows and the sliding glass door and enjoy the heat!  Unfortunately, my SO loves it cool and has asthma, so I turn on the A/C an hour before he arrives home from work.  
I usually have a cold all summer.  

Ryuichi