Mexico City Weather in December

Mexico City's climate is defined by its extraordinary elevation of 2,240 meters above sea level — what would be a tropical city is instead spring-like year-round, with average temperatures between 12–24°C throughout the year. The city sits in the Valley of Mexico surrounded by volcanoes, which traps air pollution and creates intense thermal inversions in winter. A rainy season from June to September brings daily afternoon thunderstorms while the dry season from November to May is dusty and increasingly warm.

Holiday season. Many cities decorate beautifully. Book ahead for December travel.

Mexico City's high altitude (7,350 ft/2,240m) keeps temperatures surprisingly mild year-round. Days are typically 65–75°F; nights cool significantly. The rainy season (May–October) brings afternoon thunderstorms. Air quality is a year-round concern due to the enclosed valley.

• ✓Layers for significant temperature swings (20–30°F between morning and afternoon)
• ✓Sunscreen SPF 50+ — altitude amplifies UV
• ✓Rain jacket or compact umbrella May–October
• ✓Comfortable walking shoes for uneven cobblestone streets