December · January · February
Rating 5/5 Crowds: peak Prices: peak
Dry and mild almost everywhere; peak on the Caribbean coast. Whales in Baja (Jan–Mar).
Events: Guadalupe–Reyes holidays (12 Dec–6 Jan) · Grey whales, Baja California Sur · Carnival in Veracruz and Mazatlán (Feb)
March · April · May
Rating 4/5 Crowds: high Prices: expensive
Hot and dry; jacarandas in CDMX (March), Semana Santa crowds, May is the hottest month inland.
Events: Equinox at Chichén Itzá (21 Mar) · Semana Santa processions · Guelaguetza preparations
September · October · November
Rating 4/5 Crowds: high Prices: moderate
Rains end by October; November is superb. Día de Muertos is the cultural peak of the year.
Events: Independence (15–16 Sep) · Cervantino, Guanajuato (Oct) · Día de Muertos (1–2 Nov) · Monarch butterflies, Michoacán (Nov–Mar)
June · July · August
Rating 3/5 Crowds: moderate Prices: moderate
Rainy season: afternoon storms, green landscapes, lower prices. Hurricane risk on both coasts from August.
Events: Guelaguetza, Oaxaca (July) · Whale sharks near Isla Mujeres (Jun–Sep)