Weather in Mexico City in December

December in Mexico City is cool outdoor weather: usable if you dress for it, not a beach brief.

In Mexico, this is how Mexico City actually wears December, not how a country centroid would. Compared with May and January, December sits in the middle of Mexico City's year.

Pack for Mexico City in December, not for a brochure that was photographed in another season.

Mexico City
Average temp
16°C

9–22°C

Rainfall
9 mm

Not much rain

Sunshine
7.1 h

hours per day

What to expect

Daytime

Cool days in Mexico City: a jumper you can take off, a shell in the bag. Walking is fine. Lingering outside without a layer is optimism.

Mornings and evenings are colder than the postcard. Pack for both, especially if you leave the built-up centre.

Rain

Rain is not the story in Mexico City in December. Pack for sun. A shower would be news, not a plan.

Do not build the trip around weather windows. Build it around shade if it is hot, and around getting outside if it is not.

Evening

Evenings are cooler. A layer helps after sunset.

What to pack

  • Sun protection

  • A layer for cooler evenings

Where to stay in Mexico City

Dates are a starting point for December.

All hotels in Mexico City

Average weather in Mexico City

TemperatureRainfall

Source: MeteostatPeriod: 1991-2020Checked: 28 Aug 2026265 places covered

Similar weather in December

Other destinations whose December averages sit close to this one.

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FAQs about Mexico City

Climate averages for Mexico City, 1991–2020.

The best time to visit Mexico City is between February and May, the most comfortable stretch of the year on these averages.

April is the hottest month, with an average around 21°C.

August is the wettest month, with about 186 mm of rain.

No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.