Weather in Mexico City in October

A good month. October works. It is not the peak, but nothing about it fights you. You should expect rain on 15 days of the month, which is more days wet than dry.

October ranks 7 of 12 in Mexico City: past the worst of the year but short of December, which is the month to book if the dates are open.

This is persistent light rain rather than storms: 15 wet days but only 1 heavy ones. It rarely cancels anything outright, and it rarely fully clears either. A jacket beats an umbrella. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average October reaches 30 °C. Across the twenty years measured, the hottest October day reached 26.5 °C and the coldest night fell to 1.8 °C.

October is moderately variable: 7 mm in the driest year against 113 mm in the wettest, around an average of 64 mm. Roughly two Octobers in three land near that average, and the third does something else entirely.

Wind is light at 3.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How October sits in the year

Temperatures hold steady either side: 22.7 °C in September, 22.5 here, 22 in November. Nothing about the timing within the month matters much. Rain is the thing that moves: November brings 10 days less of it, so pushing the dates later buys drier weather.

Daylight in October

11.7 hours of daylight, losing 0.5 hours across the month. That is between Mexico City's extremes of 13.3 and 11 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 21.8 °C between the year's warmest afternoons and coldest nights. At 2240 m, altitude is doing as much work here as latitude: thinner air means fierce sun by day and heat that leaves the moment it sets.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

October in Mexico City versus nearby

If Mexico City is one option among several, the nearby comparison is worth making. Santiago de Querétaro is a better bet in October — 3.3 °C warmer, 6 days less rain. Morelia is close enough to be a coin toss — within a degree on temperature, 2 days less rain.

So: October is a compromise. December is 23 points better and is what Mexico City is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Mexico City

See all twelve months in Mexico City, or where else to go in October.