I personally love the summer and all the heat and humidity that it can throw at me!  Here are some images that I loved from myhomeideas.com that looked inviting, easy to create with simple furnishings and just made me want to lounge with that summer cocktail.   You can create your own cabana with some tall old columns from the salvage yard, posted into the ground and anchored at the top on all 4 sides with slender iron or wood beams.  Hang some breezy outdoor fabrics over the top and sides and voila!