I measured the door,
The actual door is 29", outside frame to frame is 31 1/4".
When my door is all the way up till the little lock handle is touching the wall there is a 3/4" gap between the door and wall, you could get away with a 1" something and still latch it up.
I wish it was easier to post photos here, I took a couple but I'll have to load them to photobucket and post them, the way my hinge is it kind of crests a drip rail above my door.
I'll measure mine in the morning for you if you don't get the measurement before then. I will also check to see what kind of clearance is there when it is opened all the way and latched.
My left side door does this sometimes but the door itself hasn't gotten wavy or anything, on mine water pools up between the bottom of the door and the housing.