If you’re convinced that wearing a suit to a dance is a hot, stuffy affair, then you’ll have a hard time believing that you can wear a suit in the summer, but it can be done. How?
It’s a matter of fabric. If you wear a typical 3-season weight (Fall/Winter/Spring) wool suit, you will melt. Chances are it’s a dark suit, which makes it extra hot and not appropriate for the season anyway. What you want is a lighter weight, breathable fabric like cotton or linen.
Besides the fabric of your jacket or suit, it’s lining will also make a difference to your perception of the temperature. Jackets can be fully lined, partially lined, or unlined. Unlined jackets are unstructured and often are made of cotton. (They’re also packable, which make them great for travel).
No matter how breathable and lightweight your clothes, you will sweat. Count on it. Take a break, cool off, dance by a fan, take off your jacket if it gets overwhelming, and for goodness sake, change if you’re drenched (you did bring extra shirts, right?). The follows will appreciate it. (If you don’t, they’ll tell their friends not to dance with you).