Iquitos Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Iquitos, Loreto, Peru. 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.
Iquitos experiences significant rainfall throughout the year, averaging 2906 mm (114 in) of precipitation annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Iquitos experiences moderate seasonal variation in rainfall, with monthly averages ranging from 312 mm (12 in) in April, the wettest month, and 160 mm (6.3 in) in August, the driest month.
April, the wettest month, has a maximum daytime temperature of 31°C (88°F). The city receives 161 hours of sunshine in this period. During the driest month August you can expect a temperature of 31°C (88°F). For more detailed insights into the city's temperatures, visit our Iquitos 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 Iquitos's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Iquitos spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Peru: City Comparison
The map below shows the annual precipitation across Peru. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
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Iquitos vs World: Rainfall Compared
Iquitos's average annual precipitation is 2906 mm (114 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.
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.
Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.
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 Iquitos's weather, including sunshine hours, humidity levels, and temperature data, visit our Iquitos Climate page.
