Traveling to Mexico

My husband and I have traveled to Mexico twice.  Once to Riviera Maya and once to Cancun.  February seems to be the best time to go, as it's less expensive http://books.google.com/books?id=l9qQKuBX1z0C&printsec=frontcover&dq=trips+to+mexico&source=gbs_similarbooks_s&cad=1#v=onepage&q=trips%20to%20mexico&f=falsethat time of year and the average temp is in the 90's.