Iquitos Temperature by Month

The average annual maximum temperature in Iquitos, Loreto, Peru is 31°C (88°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Iquitos compares to cities worldwide.

Year-round, Iquitos experiences a consistently very warm climate. Maximum daytime temperatures range from a very warm 32°C (90°F) in September to a very warm 30°C (86°F) in the coolest month, June. Nighttime temperatures range from 23°C (73°F) in September to 22°C (72°F) in June.

The chart below illustrates the average maximum day and minimum night temperatures in Iquitos by month:

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. September, the city's warmest month, sees 215 hours of sunshine.

The chart below shows the average temperature throughout the year:

Iquitos's average annual maximum temperature is 31°C (88°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Iquitos, June is the coolest month, with average highs of 30°C (86°F) and humidity around 82%, considered very high. In September, the warmest month, temperatures average 32°C (90°F) with 78% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

For more on Iquitos's weather, including monthly rainfall, sunshine hours, and humidity, visit our Iquitos climate page.