the main downside would be birds, bugs, bats, etc. who might like to try a novel domicile. Leave your hatches and cockpit open for ventilation but cover them with window screen to keep the rascals OUT!. Otherwise your porch should work fine. If it's visible from the street in some neighborhoods, your kayak might get "borrowed".

: Folks...any downside to hanging a stripper yak outside under my porch totally
: out of any sun? I live in S. La, where it is mostly hot/humid, with a week
: or two a year (not this year for sure) getting below freezing. Most
: summers we approach or exceed 100 degrees a few times as well. I haven't
: built one yet, but...
: Thanks!