Weather in Iztapalapa

Rain is wet season runs from June to September, inside an annual total of 896 mm. The wettest month is September at 171 mm; the driest is December at 12 mm.

Iztapalapa is in Mexico at 19.4°N. The 2001–2020 NASA POWER daily record describes a mild oceanic climate. May is the warmest month (average 17.7°C, high 25.4°C) and January is the coolest (average 11.3°C, low 3.8°C). On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are February, March, and April.

Rainfall pattern

The wet season in Iztapalapa starts in June and ends in September (June, July, August, and September). September is the core of it at 171 mm. December is the other extreme, with 12 mm.

A rainy day here is a day with at least 1 mm in the NASA POWER series. September averages 26 such days; December averages 3.

Hot and cool months in Iztapalapa

Iztapalapa has a 6.4°C gap between its coolest monthly average (11.3°C in January) and its warmest (17.7°C in May). That is a northern-hemisphere pattern.

Mean high across all twelve months is 21.5°C and mean low is 7.4°C. These are 20-year grid averages, so a city station can read a few degrees warmer or cooler.

The calendar in Iztapalapa

January is the coolest month, with lows around 3.8°C and highs near 18.9°C. Rainfall is 14 mm. May is the warmest month. Afternoon highs average 25.4°C and nights settle near 10.0°C, with 62 mm of rain. The wet season opens in June. Expect 148 mm and 25 rainy days, with nights around 10.3°C. September closes the wet season: 171 mm over 26 rainy days, then the calendar dries.

In October, Iztapalapa averages 19.7°C by day and 7.4°C at night, with 88 mm of rain. November: 19.1°C high, 5.3°C low, 30 mm rain, 72% humidity. December is the driest month, averaging only 12 mm across 3 rainy days. Highs sit near 19.2°C.

Best months to visit Iztapalapa

The three months with the highest comfort score are February, March, and April: February (13.1°C average, 14 mm, 56% humidity); March (14.8°C average, 21 mm, 52% humidity); April (17.0°C average, 31 mm, 50% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the wet season itself — fewer crowds, greener landscape, heavier rain — aim at June–September instead of the score.

How Iztapalapa compares inside Mexico

Mexico City is about 11 km away: Iztapalapa is about as warm as Mexico City at the hot peak and 103 mm wetter over the year than Mexico City. Mexico City’s wettest month is July (154 mm) versus September here.

Puebla is about 96 km away: Iztapalapa is 3.1°C cooler than Puebla in its hottest month and a similar annual rainfall (877 mm in Puebla). Puebla’s wettest month is September (169 mm) versus September here.

Querétaro is about 195 km away: Iztapalapa is 4.4°C cooler than Querétaro in its hottest month and 214 mm wetter over the year than Querétaro. Querétaro’s wettest month is July (158 mm) versus September here.