I have always associated peaches with July and August. That is until a few years ago when I discovered the most succulent peaches I ever tasted -- in September.
Peach season in California is long and abundant; it runs from May to October and peaks from July through September. In general, peaches are picked early to withstand shipping and to have a longer shelf life. The problem is when you take home many of these peaches, they are as hard as a rock (and taste like one too). That's why buying locally grown peaches is a better option when possible.
A couple of years ago at a local farmers' market I discovered Summerset peaches, which peak in September. Like a California sunset, these fruits are a dazzling blend brilliant reds, warm oranges, and golden yellows. In addition to being visually beautiful, they emit a delicate floral aroma and are amazingly juicy and succulent, as if warmed by the sun.