We went in May 03 and thought the weather was great. A lot of how comfortable you are will depend on where you live. We are in TX, so it didn't seem too hot to us. We got warm a few times, but were never miserable. We only really got rained on once, but missed a shower or too when we were in our rooms. I loved May and it is one of my favorite times to go. (Don't miss Star Wars weekends!)