Formosa Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Formosa, Formosa Province, Argentina. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Let's explore the details to provide you with a complete overview.
Formosa has a relatively rainy climate with high precipitation levels, averaging 1623 mm (64 in) of rainfall annually.
Monthly Rainfall & Rainy Days
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, October receives substantial rainfall, averaging 188 mm (7.4 in) of precipitation, recorded across 9 rainy days.
In contrast, the driest month, August brings less rainfall, with 67 mm (2.6 in) over 7 rainy days.
October, the wettest month, has a maximum daytime temperature of 30°C (86°F). The city receives 233 hours of sunshine in this period. During the driest month August you can expect a temperature of 26°C (79°F). For more detailed insights into the city's temperatures, visit our Formosa Temperature page.
Daily Historical Precipitation
Average daily rainfall for each day of the month based on long-term records. 50-year average (1976-2025)
Average precipitation in September
Explore Formosa's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Formosa spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Argentina: City Comparison
The map below shows the annual precipitation across Argentina. You can also select the different months in case you are interested in a specific month.
Formosa vs World: Rainfall Compared
Formosa's average annual precipitation is 1623 mm (64 in). Let's compare this to some popular worldwide tourist destinations:
Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.
In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.
In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.
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 Formosa's weather, including sunshine hours, humidity levels, and temperature data, visit our Formosa Climate page.
Formosa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Formosa - and find the best time to visit.
Formosa 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Formosa climate overview or explore weather in Argentina.
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Where to go in September - average daytime high across popular destinations.
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