Generally, the weather in Mexico City in December is 11 with a normal high in the month being 20 and lows being 5 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 11 |
| High Temperature | 20 |
| Low Temperature | 5 |
| Sunshine Per Day | 9 |
Useful Links: Mexico City Weather: Average Weather & Yearly Climate