Correct pitch location is key, as with any tent. Iv your in a not soaking wet climate, and pitch your tipi in the right spot, you will not get. If you pitch it in a depression you will get wet as with just about every other tent, floored or not. Pitch it in a good spot and forget the bivy is how id go. Only reason id like a bivy is to increase temp and protect my bag in floorless shelters. Water entering has not been a concern.Ken have you had anny water get in your tipi during hard/prolonged rain?