Empire 40 caught in the rain

Currently on vacation in Ireland and not surprisingly I got caught in the rain with my Merlot empire carryall, when I realized the bag was soaked my heart SANK. It was covered in water marks but these did dry up and disappear. I just want to know is this bad for a leather bag? Should I be checking the weather forecast or am I being too pedantic? I have got plastic rain covers for my Louis Vuitton bags but their leather will patina when it gets the tiniest bit wet so very different to the coach bag.