Barreirinhas Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Barreirinhas, Maranhão, Brazil. This average is based on long-term data collected between 1990 and 2020. Let's now guide you through the details for a complete overview.
Barreirinhas is known for its substantial rainfall, with annual precipitation reaching 1453 mm (57 in). While the overall climate is wet, there are notable seasonal patterns that create interesting contrasts, as demonstrated in our graph below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Barreirinhas can be quite wet during April, receiving approximately 333 mm (13 in) of precipitation over 30 rainy days.
In contrast September, experiences much drier conditions, with 6.5 mm (0.3 in) of rainfall, spread across 8 rainy days.
April, the wettest month, has a maximum daytime temperature of 31°C (88°F). During the driest month September you can expect a temperature of 34°C (93°F). For more detailed insights into the city's temperatures, visit our Barreirinhas 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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Barreirinhas vs World: Rainfall Compared
Barreirinhas's average annual precipitation is 1453 mm (57 in). Let's compare this to some popular worldwide tourist destinations:
In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
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.
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.
- 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 Barreirinhas's weather, including sunshine hours, humidity levels, and temperature data, visit our Barreirinhas Climate page.
