One coastline, many trips in one: the energy and nightlife of Cancun, the boutique jungle-and-beach mood of Tulum, family mega-resorts in Playa del Carmen, and Mayan ruins less than an hour inland. Short flights, great value and the second-largest reef in the world just offshore.
November to April is dry season and peak weather. September is the quietest and cheapest, with a chance of rain.