If you're just looking for something cool to read on those hot summer days by the pool, then one recommendation I'd drop in is Oprah's reading list.
I always find interesting novels amongst the books she promotes. You can keep up to date with her selections here: http://www.oprah.com/omagazine/Summer-Reading-List-Summer-Books
However, if by 'hot' you mean sexy or raunch, then I guess the first title that comes to mind if the infamous 50 Shades of Grey by E.L. James.
Another saucy book I've enjoyed recently is Delta of Venus by Anaïs Nin. It's a collection of stories commissioned by a private collector of studies about women, but actually makes for some thrilling erotica and touches on quite a few taboo subjects!
