San Luis Potosí Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in San Luis Potosí, San Luis Potosí, Mexico. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's explore all the details to give you a full picture.

Generally, San Luis Potosí receives mid-range precipitation levels, with 585 mm (23 in) annually. The distribution varies significantly throughout the year, with a distinct dry season during certain months, as shown in our charts below.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in San Luis Potosí shows significant variation throughout the year. Expect 102 mm (4 in) of precipitation during the wettest month September, distributed over 7 rainy days.

In contrast, December offers drier and sunnier days, with around 12 mm (0.5 in) of rainfall over 2 rainy days.

September, the wettest month, has a maximum daytime temperature of 25°C (77°F). The city receives 195 hours of sunshine in this period. During the driest month December you can expect a temperature of 22°C (72°F). For more detailed insights into the city's temperatures, visit our San Luis Potosí Temperature page.

San Luis Potosí's average annual precipitation is 585 mm (23 in). Let's compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm (18 in) of rainfall mostly during the winter months.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about San Luis Potosí's weather, including sunshine hours, humidity levels, and temperature data, visit our San Luis Potosí Climate page.