Mexico City, Mexico weather in December

Averages from 2021–2025 (155 days of record).

Average high: 72°F
Average low: 47°F
Rainy days: ~3 per month
Total precipitation: 0.4 in
Warmest recorded: 79°F
Coldest recorded: 35°F

Expect December days in Mexico City, Mexico to top out around 72°F and cool to about 47°F overnight, with roughly 3 days of measurable rain across the month. In recent years December has ranged from 35°F to 79°F.

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Current Mexico City, Mexico forecast → · Historical data by Open-Meteo (ERA5).