Monthly climate guide
Mexico City weather in December
Expect mild weather in Mexico City in December: afternoons reach about 20°C (68°F), while nights drop to around 5°C (42°F). Around 7 mm of rain falls over the month (very dry), and skies are mostly sunny. Daytime highs are about the same as November and about the same as January.
What stands out in December
- Only 2 months are cooler in Mexico City than December.
- Rain is well below Mexico City's usual level (around 89% less).
- Afternoons and nights feel like different seasons, roughly 15°C apart.
- It's one of the drier stretches of the year in Mexico City.
Avg high
20°C
68°F
Avg low
5°C
42°F
Rainfall
7 mm
very dry
Humidity
65%
relative
Sky
33%
cloud · mostly sunny
Mexico City weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 19°C / 66°F | 4°C / 39°F | 6 mm | 60% | 35% |
| February | 22°C / 71°F | 6°C / 42°F | 8 mm | 54% | 31% |
| March | 24°C / 75°F | 7°C / 44°F | 19 mm | 51% | 33% |
| April | 26°C / 79°F | 9°C / 48°F | 23 mm | 46% | 41% |
| May | 26°C / 79°F | 10°C / 50°F | 61 mm | 55% | 52% |
| June | 23°C / 74°F | 11°C / 51°F | 141 mm | 70% | 68% |
| July | 21°C / 70°F | 10°C / 50°F | 149 mm | 77% | 75% |
| August | 21°C / 70°F | 10°C / 50°F | 155 mm | 79% | 73% |
| September | 20°C / 68°F | 10°C / 49°F | 140 mm | 82% | 75% |
| October | 20°C / 68°F | 8°C / 46°F | 62 mm | 77% | 56% |
| November | 20°C / 68°F | 6°C / 43°F | 24 mm | 72% | 43% |
| December | 20°C / 68°F | 5°C / 42°F | 7 mm | 65% | 33% |
What to pack for December
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- Sunglasses
Is December a good time to visit Mexico City?
Our Mexico City guide recommends: March to May, in the dry season before the June–October rains, with warm days and cool evenings due to the altitude.
The city sits at over 2,200m altitude — take it easy on your first day or two, especially with alcohol or strenuous activity.
Best time to visit Mexico City →Other Mexico cities in December
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Mexico City weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/mexico/mexico-city/december
<a href="https://weathercompare.eu/weather/mexico/mexico-city/december">Mexico City weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/mexico/mexico-city" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Mexico City weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/mexico/mexico-city/december">Mexico City weather in December</a> – WeatherCompare</p>
Mexico City in December: quick answers
Is December a good time to visit Mexico City?
December is a reasonable time for Mexico City: highs around 20°C and about 7 mm of rain, though not one of the three best months.
How warm is Mexico City in December?
Average highs are about 20°C (68°F) and average lows about 5°C (42°F), based on 10 years of daily data.
Does it rain a lot in Mexico City in December?
Mexico City typically gets around 7 mm of rain in December — very dry.
When is the best time to visit Mexico City?
March to May, in the dry season before the June–October rains, with warm days and cool evenings due to the altitude.
Figures are long-term averages for the area around Mexico City (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.