Porto Alegre Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Porto Alegre, Rio Grande do Sul, Brazil. Long-term data from 1990 to 2020 was used to calculate these averages. Let's explore the details to provide you with a complete overview.
Porto Alegre experiences significant rainfall throughout the year, averaging 1590 mm (63 in) of precipitation annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Year-round, Porto Alegre has a balanced climate with minimal variation in precipitation. The difference between the wettest month, October, with 172 mm (6.8 in), and the driest month, May, with 110 mm (4.3 in), is minimal.
October, the wettest month, has a maximum daytime temperature of 26°C (79°F). The city receives 181 hours of sunshine in this period. During the driest month May you can expect a temperature of 23°C (73°F). For more detailed insights into the city's temperatures, visit our Porto Alegre Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Explore Porto Alegre's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Porto Alegre spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
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
high
moderate
low
almost none
Porto Alegre vs World: Rainfall Compared
Porto Alegre's average annual precipitation is 1590 mm (63 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.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
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.
- 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 Porto Alegre's weather, including sunshine hours, humidity levels, and temperature data, visit our Porto Alegre Climate page.
