Climate and Average Weather Year Round in Iguape Brazil
In Iguape, the summers are short, hot, oppressive, and mostly cloudy; the winters are long, comfortable, and partly cloudy; and it is wet year round. Over the course of the year, the temperature typically varies from 62°F to 87°F and is rarely below 56°F or above 95°F.
Based on the tourism score, the best time of year to visit Iguape for warm-weather activities is from late April to late September.
Climate in Iguape
Average Temperature in Iguape
The hot season lasts for 2.8 months, from December 27 to March 22, with an average daily high temperature above 85°F. The hottest day of the year is February 14, with an average high of 87°F and low of 77°F.
The cool season lasts for 4.6 months, from May 27 to October 14, with an average daily high temperature below 77°F. The coldest day of the year is July 27, with an average low of 62°F and high of 75°F.
Average High and Low Temperature in Iguape
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 Iguape
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
In Iguape, 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 Iguape begins around March 12 and lasts for 7.0 months, ending around October 11. On August 27, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 65% of the time, and overcast or mostly cloudy 34% of the time.
The cloudier part of the year begins around October 11 and lasts for 5.0 months, ending around March 12. On February 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 67% of the time, and clear, mostly clear, or partly cloudy 33% of the time.
Cloud Cover Categories in Iguape
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Iguape varies significantly throughout the year.
The wetter season lasts 4.9 months, from November 11 to April 7, with a greater than 44% chance of a given day being a wet day. The chance of a wet day peaks at 66% on February 5.
The drier season lasts 7.1 months, from April 7 to November 11. The smallest chance of a wet day is 21% on August 10.
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 66% on February 5.
Daily Chance of Precipitation in Iguape
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. Iguape experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Iguape. The most rain falls during the 31 days centered around January 26, with an average total accumulation of 9.9 inches.
The least rain falls around August 14, with an average total accumulation of 2.3 inches.
Average Monthly Rainfall in Iguape
The length of the day in Iguape varies over the course of the year. In 2021, the shortest day is June 21, with 10 hours, 36 minutes of daylight; the longest day is December 21, with 13 hours, 41 minutes of daylight.
Hours of Daylight and Twilight in Iguape
The earliest sunrise is at 5:12 AM on November 30, and the latest sunrise is 1 hour, 43 minutes later at 6:55 AM on July 3. The earliest sunset is at 5:28 PM on June 8, and the latest sunset is 1 hour, 36 minutes later at 7:04 PM on January 12.
Daylight saving time (DST) is not observed in Iguape during 2021.
Sunrise & Sunset with Twilight in Iguape
The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Moon Rise, Set & Phases in Iguape
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.
Iguape experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 7.6 months, from October 1 to May 21, during which time the comfort level is muggy, oppressive, or miserable at least 29% of the time. The muggiest day of the year is February 14, with muggy conditions 95% of the time.
The least muggy day of the year is July 21, with muggy conditions 7% of the time.
Humidity Comfort Levels in Iguape
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Iguape experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.5 months, from September 6 to January 22, with average wind speeds of more than 7.0 miles per hour. The windiest day of the year is November 25, with an average hourly wind speed of 7.8 miles per hour.
The calmer time of year lasts for 7.5 months, from January 22 to September 6. The calmest day of the year is June 18, with an average hourly wind speed of 6.3 miles per hour.
Average Wind Speed in Iguape
The predominant average hourly wind direction in Iguape is from the east throughout the year.
Wind Direction in Iguape
Iguape is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.8 months, from December 24 to April 18, with an average temperature above 77°F. The day of the year with the warmest water is February 14, with an average temperature of 80°F.
The time of year with cooler water lasts for 3.3 months, from June 23 to October 2, with an average temperature below 69°F. The day of the year with the coolest water is August 6, with an average temperature of 66°F.
Average Water Temperature in Iguape
Best Time of Year to Visit
To characterize how pleasant the weather is in Iguape throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Iguape for general outdoor tourist activities is from late April to late September, with a peak score in the third week of August.
Tourism Score in Iguape
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Iguape for hot-weather activities is from mid March to mid May, with a peak score in the third week of April.
Beach/Pool Score in Iguape
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
Temperatures in Iguape are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season in Iguape
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
Growing Degree Days in Iguape
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 experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 2.6 months, from October 26 to January 14, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is December 2, with an average of 6.7 kWh.
The darker period of the year lasts for 2.8 months, from May 11 to August 5, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest day of the year is June 25, with an average of 3.4 kWh.
Average Daily Incident Shortwave Solar Energy in Iguape
For the purposes of this report, the geographical coordinates of Iguape are -24.708 deg latitude, -47.555 deg longitude, and 26 ft elevation.
The topography within 2 miles of Iguape contains very significant variations in elevation, with a maximum elevation change of 1,171 feet and an average elevation above sea level of 72 feet. Within 10 miles also contains very significant variations in elevation (1,637 feet). Within 50 miles contains very significant variations in elevation (4,905 feet).
The area within 2 miles of Iguape is covered by trees (42%), water (23%), and shrubs (16%), within 10 miles by water (45%) and trees (44%), and within 50 miles by water (51%) and trees (40%).
This report illustrates the typical weather in Iguape, 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, Congonhas-São Paulo Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Iguape.
At a distance of 151 kilometers from Iguape, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere .
The weight assigned to the MERRA-2 value depends on the distance from Iguape to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 2%, making the weight assigned to the weather station 98%.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports 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.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.