Oaxaca pairs the colonial city's mole and mezcal cuisine with Monte Albán's Zapotec hilltop ruins, the Pacific surf at Puerto Escondido and Mazunte, and Hierve el Agua's mineral cliff above the Mixtec valleys.
Day of the Dead late October-early November turns Oaxaca City into Mexico's most photogenic Día de los Muertos celebration with cemetery vigils at Xoxocotlán.
Dry season with Pacific surf at Zicatela, Guelaguetza folkloric festival is July, but the Noche de Rábanos December 23 carves giant radishes for the Zócalo.
Guelaguetza folkloric festival the last two Mondays of July fills Oaxaca City with regional dance from across the state's seven ethnic regions.
Rainy afternoons but mornings clear, Oaxacan landscape green, and the Sierra Norte cloud forest at peak with Pueblos Mancomunados eco-tourism cooperatives full.