Vassouras Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Vassouras, Rio de Janeiro State, Brazil. 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.
Vassouras experiences significant rainfall throughout the year, averaging 1654 mm (65 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))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, January receives substantial rainfall, averaging 286 mm (11 in) of precipitation, recorded across 21 rainy days.
In contrast, the driest month, July brings less rainfall, with 32 mm (1.3 in) over 9 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 25°C (77°F). For more detailed insights into the city's temperatures, visit our Vassouras 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.
heavy rainfall
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moderate
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Vassouras vs World: Rainfall Compared
Vassouras's average annual precipitation is 1654 mm (65 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.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.
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 Vassouras's weather, including sunshine hours, humidity levels, and temperature data, visit our Vassouras Climate page.
