Mexico City Weather in August
Mexico · Subtropical Highlands climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Mexico City sees average temperatures ranging from a low of 12.7°C (54.9°F) to a high of 22.8°C (73.0°F), with a mean of 17.0°C (62.6°F). Compared to the annual average of 17.2°C (63.0°F), this month is 0.2°C cooler than the yearly norm. Precipitation averages 261.3mm, making it approximately 173.0mm wetter than the monthly average of 88.0mm. This is the wettest month of the year, with 261.3mm of precipitation and around 30.4 rainy days. The city receives an average of 10.5 hours of sunshine per day during August, with relative humidity averaging 76.5%. Wind speeds reach an average maximum of 15.0 km/h. For travelers, this month offers a temperature experience in Mexico City, with wetter-than-average conditions compared to the rest of the year.
Mexico City's altitude (2,240m) is the packing variable everyone forgets. I packed for 25°C days and shivered through 12°C nights — the swing is real. Layering is non-negotiable; bring a fleece even in May. The dry season (November-April) is the sweet window: 22°C, low rain, low humidity. Skip May-June when heat plus dust plus ozone make breathing uncomfortable. July-September is rainy season — spectacular afternoon thunderstorms but plan indoor mornings. Sunscreen is essential at altitude even on cloudy days. And drink water constantly; the thin air dehydrates you faster than you'd expect.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 17.4°C (63.3°F) | 17.0°C (62.6°F) | 16.9°C (62.4°F) |
| Rainfall | 218.9mm | 261.3mm | 243.4mm |
| Sunshine | 11.1 hrs | 10.5 hrs | 10.0 hrs |
| Humidity | 74.7% | 76.5% | 76.0% |
| Wind | 15.5 km/h | 15.0 km/h | 15.7 km/h |
| Rainy Days | 30.4 | 30.4 | 26.6 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Mexico City in August, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Mexico City in August?
The average temperature in Mexico City during August ranges from 12.7°C (54.9°F) to 22.8°C (73.0°F), with a mean of 17.0°C (62.6°F).
How much does it rain in Mexico City in August?
Mexico City receives an average of 261.3mm of precipitation in August, spread across approximately 30.4 rainy days. This is the wettest month of the year.
What should I pack for Mexico City in August?
Based on August weather data, pack layers including light jackets and t-shirts, plus an umbrella. Rain gear is essential — this month averages 261.3mm of precipitation.
Is August a good time to visit Mexico City?
August is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Mexico City
Cities with Similar August Climate (Subtropical Highlands)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 19.43°, -99.13°. Timezone: America/Mexico_City. Last updated: 2026-07-30.