Monarch butterfly migration begins in Mexico

The annual migration of the monarch butterfly to Mexico begins in October and November, coinciding with the Day of the Dead celebrations. These insects travel over 4,000 kilometers from Canada and the northwestern United States to reach their hibernation sites in the oyamel forests of the Monarch Butterfly Biosphere Reserve, located in the states of Michoacán and Estado de México.

In Mexican indigenous cultures, such as the Purépecha, Mexica, and Zapotec, the butterflies hold sacred significance. They are often viewed as the souls of the deceased or messengers of the gods, arriving to visit the living during early November. Some communities continue to honor them with offerings of flowers and copal.

Travelers planning to visit sanctuaries like El Rosario, Sierra Chincua, El Capulín, or Macheros are advised to confirm specific opening dates, schedules, and fees before booking, as seasonal arrival does not always guarantee immediate sanctuary access. Environmental guidelines recommend using specialized guides, following local community rules, minimizing noise, and strictly adhering to the prohibition against removing any butterflies.