Sao Paulo Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Sao Paulo, São Paulo State, Brazil. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's now guide you through the details for a complete overview.

Sao Paulo has a notably wet climate with abundant precipitation, recording 1540 mm (61 in) of rainfall per year. It does, however, have a distinct rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.

Monthly Precipitation Levels

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

Sao Paulo can be quite wet during January, receiving approximately 251 mm (9.9 in) of precipitation over 25 rainy days.

January, the wettest month, has a maximum daytime temperature of 28°C (82°F). The city receives 170 hours of sunshine in this period. During the driest month August you can expect a temperature of 25°C (77°F). For more detailed insights into the city's temperatures, visit our Sao Paulo Temperature page.

Annual Rainfall in Brazil: City Comparison

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

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Legend heavy rainfall high moderate low almost none

Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Sao Paulo vs World: Rainfall Compared

Sao Paulo's average annual precipitation is 1540 mm (61 in). Let's compare this to some popular worldwide tourist destinations:

Seville, Spain, experiences 541 mm (21 in) of rainfall annually, with wet winters and dry summers typical of southern Spain.

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

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

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.

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

• The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
• Approximately 70% of lightning bolts strike land rather than oceans.
• A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

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