Your best option is to stay indoors in A/C as much as possible in July! LOL! It's so hot and muggy here. Take it slow! That said, the light wraps are the Gypsy Mama and the EllaRoo. I am actually not sure what the lightest slings are. I used a cotton sling when my 2nd was born here and mostly, we just didn't go out all that much in the heat of the summer, especially that 1st year when my hormones were all outa whack!