Mexico City Climate & Weather Averages

Climate Insights from Our Writers

“Mexico City's altitude of 2,240 meters is the most important factor in understanding its climate, and I've studied few cities where elevation plays such a defining role. The altitude creates a subtropical highland climate that's remarkably temperate for a city located at 19°N latitude. The data shows that the annual average temperature is 17°C, with May being the warmest month at 19°C and January the coolest at 14°C. The temperature range of just 5°C is among the narrowest I've recorded for a major city, reflecting the moderating influence of the altitude. The real challenge of Mexico City's climate is the diurnal temperature variation — the daily swing between daytime highs and nighttime lows can be 15°C or more, requiring careful wardrobe planning. The UV index is another factor that's amplified by the altitude, with levels reaching 11+ even on cloudy days, requiring serious sun protection. The rainfall pattern is distinctly seasonal, with most of the city's 800mm of annual precipitation falling between June and October. The rainy season brings dramatic afternoon thunderstorms that can flood streets but also clear the air and provide a dramatic visual spectacle. The best time for a visit is November through April, when the weather is dry and the temperatures are most comfortable. The data shows that March is the ideal month, with temperatures around 18°C, low humidity, and clear skies. For travelers, the key is preparing for the altitude — staying hydrated, allowing time for acclimatization, and packing layers for the significant daily temperature swings that define this unique highland climate.”

— Climate & Travel Writer