Average Weather in Iquitos Peru
The climate in Iquitos is hot, oppressive, and mostly cloudy. Over the course of the year, the temperature typically varies from 71°F to 89°F and is rarely below 67°F or above 94°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Iquitos, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Iquitos begins around May 20 and lasts for 4.3 months, ending around September 29. On July 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 63% of the time, and overcast or mostly cloudy 37% of the time.
The cloudier part of the year begins around September 29 and lasts for 7.7 months, ending around May 20. On March 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 84% of the time, and clear, mostly clear, or partly cloudy 16% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Iquitos varies throughout the year.
The wetter season lasts 7.9 months, from October 12 to June 8, with a greater than 47% chance of a given day being a wet day. The chance of a wet day peaks at 60% on March 23.
The drier season lasts 4.1 months, from June 8 to October 12. The smallest chance of a wet day is 34% on July 30.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 60% on March 23.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Iquitos experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Iquitos. The most rain falls during the 31 days centered around April 3, with an average total accumulation of 10.4 inches.
The least rain falls around July 28, with an average total accumulation of 4.6 inches.
Average Monthly Rainfall
The length of the day in Iquitos does not vary substantially over the course of the year, staying within 20 minutes of 12 hours throughout. In 2017, the shortest day is June 20, with 11 hours, 54 minutes of daylight; the longest day is December 21, with 12 hours, 21 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:28 AM on November 10, and the latest sunrise is 33 minutes later at 6:01 AM on July 20. The earliest sunset is at 5:43 PM on October 26, and the latest sunset is 31 minutes later at 6:14 PM on February 4.
Daylight saving time (DST) is not observed in Iquitos during 2017.
Sunrise & Sunset with Twilight
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level in Iquitos, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 2% of 98% throughout.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.The average hourly wind speed in Iquitos does not vary significantly over the course of the year, remaining an essentially constant 0.9 miles per hour throughout.
Average Wind Speed
The predominant average hourly wind direction in Iquitos varies throughout the year.
The wind is most often from the east for 4.4 months, from January 13 to May 25 and for 2.1 weeks, from July 19 to August 3, with a peak percentage of 56% on March 5. The wind is most often from the south for 1.8 months, from May 25 to July 19, with a peak percentage of 36% on June 27. The wind is most often from the north for 5.3 months, from August 3 to January 13, with a peak percentage of 51% on January 1.
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.The average daily incident shortwave solar energy per square meter does not vary significantly over the course of the year, remaining within 0.4 kilowatt-hours of 5.1 kilowatt-hours throughout.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Iquitos are -3.749 deg latitude, -73.254 deg longitude, and 285 ft elevation.
The topography within 2 miles of Iquitos contains only modest variations in elevation, with a maximum elevation change of 112 feet and an average elevation above sea level of 295 feet. Within 10 miles also contains only modest variations in elevation (279 feet). Within 50 miles also contains only modest variations in elevation (410 feet).
The area within 2 miles of Iquitos is covered by shrubs (44%), water (29%), and trees (13%), within 10 miles by trees (66%) and water (20%), and within 50 miles by trees (93%).
This report illustrates the typical weather in Iquitos, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Coronel FAP Francisco Secada Vignetta International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Iquitos.
At a distance of 7 kilometers from Iquitos, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Iquitos according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.