Weather in Mexico City in July

A good month. July is a solid month to be in Mexico City. You should expect rain on 28 days of the month, which is more days wet than dry.

July ranks 10 of 12 — near the bottom of Mexico City's year. December is the month that works, and the swing between the two is 33 points, which is a different holiday rather than a slightly better one. Worth keeping in perspective: July is the weakest month of Mexico City's year and it is still a perfectly good one. The downside here is small.

Rain on 28 of the month's 31 days, 3 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. 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 July reaches 30 °C. Across the twenty years measured, the hottest July day reached 28.8 °C and the coldest night fell to 6.8 °C.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 253 mm against 83 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 154 mm average is a reasonable planning figure, not a promise.

Wind is light at 3.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 77%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 25.8 °C in June, 23.8 here, 23.6 in August. Nothing about the timing within the month matters much. Rain has already shifted: 5 days more than June had.

Daylight in July

July is at or near the longest days of Mexico City's year: 13.2 hours of daylight, holding steady all month. Evenings are the real gain — dinner outdoors still happens in full light.

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

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

July in Mexico City versus nearby

If Mexico City is one option among several, the nearby comparison is worth making. Santiago de Querétaro is close enough to be a coin toss — 3.2 °C warmer, 3 days less rain. Morelia is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: July is a compromise. December is 33 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 July.