Mexico City Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Mexico City. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Mexico City experiences significant rainfall throughout the year, averaging 1109 mm of precipitation annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm)

The climate in Mexico City shows significant variation throughout the year. Expect 203 mm of precipitation during the wettest month August, distributed over 19 rainy days.

In contrast, December offers drier and sunnier days, with around 14 mm of rainfall over 2 rainy days.

August, the city’s wettest month, has a maximum daytime temperature of 23°C. During the driest month December you can expect a temperature of 21°C. For more detailed insights into the city’s temperatures, visit our Mexico City Temperature page.

Annual Precipitation in Mexico

The map below shows the annual precipitation across Mexico. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Mexico City’s average annual precipitation is 1109 mm. Let’s compare this to some popular worldwide tourist destinations:

Boston, USA, experiences 1238 mm of annual precipitation, including significant snowfall during the winter.

Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.

Melbourne, Australia, has 690 mm of rainfall annually, spread fairly evenly throughout the year.

Singapore, situated near the equator, gets 2581 mm of rainfall annually, with no distinct dry season and consistent monthly precipitation.

How is Precipitation Measured?

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

How Does Precipitation Affect Local Climate?

Precipitation has a very strong role in determining the local climate and ecosystem:

• Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.
• Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

For more detailed information about Mexico City’s weather, including sunshine hours, humidity levels, and temperature data, visit our Mexico City Climate page.