Barretos Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Barretos, São Paulo State, Brazil. This average is based on long-term data collected between 1990 and 2020. Now, let's explore all the details to give you a full picture.

Barretos experiences significant rainfall throughout the year, averaging 1378 mm (54 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct dry and rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.

Monthly Precipitation Levels

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

The climate in Barretos shows significant variation throughout the year. Expect 266 mm (10 in) of precipitation during the wettest month January, distributed over 17 rainy days.

In contrast, July offers drier and sunnier days, with around 14 mm (0.6 in) of rainfall over 2 rainy days.

January, the wettest month, has a maximum daytime temperature of 31°C (88°F). During the driest month July you can expect a temperature of 29°C (84°F). For more detailed insights into the city's temperatures, visit our Barretos Temperature page.

Barretos's average annual precipitation is 1378 mm (54 in). Let's compare this to some popular worldwide tourist destinations:

Athens, Greece, receives an average annual precipitation of 400 mm (16 in), making it one of the drier Mediterranean climates with rainfall mostly in winter.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

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

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.

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

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• 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 Barretos's weather, including sunshine hours, humidity levels, and temperature data, visit our Barretos Climate page.