No, Cancun, Mexico does not observe Daylight Saving Time (DST). The previous DST change in Cancun was on October 26, 2014. Cancun operates all year on Eastern Standard time, without changing its clocks. The current time zone for Cancun is EST, which is GMT-5 from Greenwich Mean Time (GMT).
The state of Quintana Roo (which includes the popular resorts of Cancun, Playa del Carmen, Tulum, and the islands of Isla Mujeres and Cozumel) established its own time zone that is always aligned with US EST. Therefore, clocks in these two Mexican states are not moved forward/backward each spring and fall.
Current Cancún Time: 08:01:44PM
Tuesday, April 9, 2019
Sunrise: 06:33 Sunset: 19:05