What is a summer read?

There are loads of summer reading lists out there. A quick search came up with a list for every taste, including romance, mysteries, classics that you’ve never read, and must-reads-releasing-this-summer.

But what I couldn’t find was: what is the definition of a summer read?

The closest thing to a definition was on Bookriot, and it was, basically, “a book read during the summer months.” 

Had I been guessing, I would’ve said that my criteria was a bit more specific–usually something fun or bre...