It depends. If I am bored and there's nothing to do, like nothing planned, rainy days don't bother me.
If I'm happy and have something planned (like going to the beach or amusement park), I would enjoy sunny days.
But what I hate about sunny days is that if it's really hot, I'll get a sunburn on my shoulders! Ouch! It happened to me already this summer! =(
What I hate about rainy days is that it always gets me tired and sometimes gives me headaches. =(
Normally rainy or at least overcast...I don't like sunny days very much, but it depends on my mood. Sometimes, the sun feels really nice...other times, it's irritatingly hot and bright. The rain is calming normally, and exciting during storms but you can't do anything without getting all wet. Overcast is nice, but sometimes it's kinda depressing...