Figure 3From: Success in books: predicting book sales before publicationSeasonal fluctuations for book sales. The median of the one year sales of the top-selling books that published in the same month from 2008 to 2015. For fiction, sales increases in the summer, and October, November have the highest sales. For nonfiction, the increase in sales is not very significant over the summer months; instead October has the highest salesBack to article page