I'm jealous. Here in "sunny" California, it's cold and raining. Ugh!
Our summer favorites include appetizers for dinner - put out a tray of deli cold cuts, cheeses, crackers, cornichons, pickled veggies, olives, etc, and let everyone fend for themselves. Works well with a nice chilled Chardonnay! =)
We love chilled cucumber soup. It is so refreshing!
My mom is a chef and makes an olive oil ice cream (I know that sounds so weird, but it is DELICIOUS!). As you might guess, it's not super-sweet and is delightful on a hot summer night.
Another recipe I like is to buy a whole, cooked chicken from the supermarket (it is not much more expensive than buying the raw ones, and if they're willing to stand over the grill...) - anyhow, shred the chicken meat with your fingers. Chop up avocado, lettuce, tomatoes, shred some cheese, and put out some tortillas, and let everyone make their own soft tacos.