The monarch butterfly biosphere reserve in the mountains of Michoacan and Estado de Mexico opens to visitors on 1 November 2026, and the first butterflies are expected to begin arriving at the overwintering sanctuaries within the next two to three weeks. If you are planning a visit, this is the window to book transport and accommodation in Angangueo and the surrounding towns.
When the Butterflies Arrive
The monarchs make the journey from Canada and the northern United States each year, travelling up to 4,500 km to reach the highland forests of central Mexico. The first individuals typically appear at El Rosario and Sierra Chincua around the last week of October, though numbers build gradually through November and reach their peak between January and late February.
Visiting in November means you will see the trees beginning to fill - a dramatic transformation as branches that looked bare take on an orange weight. Peak season in late January and February is when the afternoon warmth triggers mass flight displays, with thousands of butterflies spiralling above the forest canopy.
Where to Go
The two main sanctuaries open to visitors are:
El Rosario (Municipio of Ocampo, Michoacan): the largest and most visited sanctuary, with well-maintained trails and local guides available at the entrance. The main colony typically concentrates here, and the trails are graded to suit most fitness levels. Entry costs approximately 90 MXN.
Sierra Chincua (near Angangueo): a quieter alternative with steeper terrain and smaller visitor numbers. Worth the effort for a less crowded experience, particularly on weekends when El Rosario fills with tour groups from Mexico City.
A third sanctuary, Cerro Pelón, is reached from the Estado de Mexico side and requires a horse or a long walk uphill - it draws a fraction of the visitors and rewards patience.
Getting There
The gateway town is Angangueo, a former mining town in the Michoacan highlands at roughly 2,700 metres. It takes about three hours from Mexico City by private car or bus via Zitácuaro, where shared taxis run up to the sanctuary entrances. Organized tours from Mexico City are the simplest option and include transport, a local guide at the sanctuary, and lunch in the area.
Morelia, the Michoacan state capital, is around 90 minutes from Angangueo and makes a practical base if you want a larger city with more accommodation options.
Planning Ahead
Weekends from mid-November onwards draw large numbers of domestic visitors. If you are traveling from abroad and have flexibility, a mid-week visit in late November or December gives you quieter trails and a full morning with the butterflies before the sanctuary fills.
Temperatures at altitude drop sharply after sunset even in the season. Layer up regardless of how warm Mexico City felt when you left.
For a detailed breakdown of season windows, permit requirements, and tour options, our monarch butterfly migration guide covers the logistics in full. For November travel planning across Mexico more broadly, see our Mexico in November guide.