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Average Weather in Itaguaçu Brazil

In Itaguaçu, the wet season is hot, oppressive, and mostly cloudy and the dry season is warm, humid, and mostly clear. Over the course of the year, the temperature typically varies from 59°F to 91°F and is rarely below 53°F or above 98°F.

Climate Summary

hotwarmhotJanFebMarAprMayJunJulAugSepOctNovDec78%78%22%22%clearovercastprecipitation: 7.7 inprecipitation: 7.7 in0.5 in0.5 inmuggy: 96%muggy: 96%16%16%tourism score: 7.5tourism score: 7.53.23.2
Click on each chart for more information.

Based on the tourism score, the best time of year to visit Itaguaçu for warm-weather activities is from mid May to mid September.

Temperature

The hot season lasts for 2.3 months, from January 13 to March 22, with an average daily high temperature above 90°F. The hottest day of the year is February 13, with an average high of 91°F and low of 71°F.

The cool season lasts for 3.0 months, from May 17 to August 17, with an average daily high temperature below 85°F. The coldest day of the year is July 24, with an average low of 59°F and high of 83°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in ItaguaçuJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoolcomfortablecomfortablewarmhothotcool
The average hourly temperature, color coded into bands: 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. The shaded overlays indicate night and civil twilight.

Maneromango, Tanzania (5,385 miles away) is the far-away foreign place with temperatures most similar to Itaguaçu (view comparison).

Clouds

In Itaguaçu, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Itaguaçu begins around April 4 and lasts for 6.4 months, ending around October 16. On August 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 78% of the time, and overcast or mostly cloudy 22% of the time.

The cloudier part of the year begins around October 16 and lasts for 5.6 months, ending around April 4. On December 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 78% of the time, and clear, mostly clear, or partly cloudy 22% of the time.

Cloud Cover Categories

Cloud Cover Categories in ItaguaçuclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2978%Aug 2978%Dec 2022%Dec 2022%Apr 450%Apr 450%Oct 1651%Oct 1651%clearmostly clearovercastmostly cloudypartly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Itaguaçu varies very significantly throughout the year.

The wetter season lasts 5.3 months, from October 21 to April 1, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 59% on December 14.

The drier season lasts 6.6 months, from April 1 to October 21. The smallest chance of a wet day is 8% on July 29.

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 59% on December 14.

Daily Chance of Precipitation

Daily Chance of Precipitation in ItaguaçuwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Dec 1459%Dec 1459%Jul 298%Jul 298%Oct 2133%Oct 2133%Apr 133%Apr 133%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. Itaguaçu experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from July 22 to June 29, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 11, with an average total accumulation of 7.7 inches.

The rainless period of the year lasts for 3.4 weeks, from June 29 to July 22. The least rain falls around July 14, with an average total accumulation of 0.5 inches.

Average Monthly Rainfall

Average Monthly Rainfall in ItaguaçurainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in2 in4 in6 in8 in10 in12 in14 inDec 117.7 inDec 117.7 inJul 140.5 inJul 140.5 inMar 113.9 inMar 113.9 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Itaguaçu varies over the course of the year. In 2018, the shortest day is June 21, with 10 hours, 56 minutes of daylight; the longest day is December 21, with 13 hours, 20 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:09 AM on October 20, and the latest sunrise is 1 hour, 27 minutes later at 6:36 AM on February 17. The earliest sunset is at 5:11 PM on June 5, and the latest sunset is 2 hours, 17 minutes later at 7:28 PM on January 17.

Daylight saving time (DST) is observed in Itaguaçu during 2018, starting in the spring on October 21 and ending in the fall on February 17.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in ItaguaçuJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMOct 205:09 AMOct 205:09 AM7:28 PMJan 177:28 PMJan 17Jun 55:11 PMJun 55:11 PM6:36 AMFeb 176:36 AMFeb 17DSTFeb 17DSTFeb 17Oct 21DSTOct 21DSTdaynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

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.

Itaguaçu experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.5 months, from September 23 to June 9, during which time the comfort level is muggy, oppressive, or miserable at least 36% of the time. The muggiest day of the year is February 28, with muggy conditions 96% of the time.

The least muggy day of the year is August 1, with muggy conditions 16% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in ItaguaçumuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Aug 116%Aug 116%96%Feb 2896%Feb 28Sep 2336%Sep 2336%Jun 936%Jun 936%oppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydrymiserablemiserable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Itaguaçu experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.6 months, from August 16 to January 3, with average wind speeds of more than 7.6 miles per hour. The windiest day of the year is October 10, with an average hourly wind speed of 9.0 miles per hour.

The calmer time of year lasts for 7.4 months, from January 3 to August 16. The calmest day of the year is June 10, with an average hourly wind speed of 6.2 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Itaguaçu varies throughout the year.

The wind is most often from the east for 9.9 months, from January 29 to November 25, with a peak percentage of 57% on February 18. The wind is most often from the north for 2.1 months, from November 25 to January 29, with a peak percentage of 55% on January 1.

Wind Direction

Wind Direction in ItaguaçuNENJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%southeastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Itaguaçu 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 3.1 months, from January 23 to April 27, with an average temperature above 79°F. The day of the year with the warmest water is March 18, with an average temperature of 80°F.

The time of year with cooler water lasts for 3.8 months, from June 28 to October 22, with an average temperature below 75°F. The day of the year with the coolest water is August 18, with an average temperature of 73°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Itaguaçu 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 Itaguaçu for general outdoor tourist activities is from mid May to mid September, with a peak score in the last week of July.

Tourism Score

Tourism Score in Itaguaçubest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.57.53.23.2 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Itaguaçu for hot-weather activities are from mid April to mid June and from late July to mid October, with a peak score in the second week of September.

Beach/Pool Score

Beach/Pool Score in Itaguaçubest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.86.84.34.36.66.6 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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.

Growing Season

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 Itaguaçu 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

Time Spent in Various Temperature Bands and the Growing Season in ItaguaçuJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 3100%Jul 3coolcomfortablewarmhotcoldsweltering
The percentage of time spent in various temperature bands: 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. The black line is the percentage chance that a given day is within the growing season.

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

Growing Degree Days in ItaguaçuJanFebMarAprMayJunJulAugSepOctNovDec0°F1,000°F2,000°F3,000°F4,000°F5,000°F6,000°F7,000°F8,000°F9,000°FJul 690°FJul 690°FAug 15900°FAug 15900°FSep 251,800°FSep 251,800°FJun 308,950°FJun 308,950°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.0 months, from December 31 to March 1, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is February 7, with an average of 6.8 kWh.

The darker period of the year lasts for 2.6 months, from May 10 to July 29, with an average daily incident shortwave energy per square meter below 4.8 kWh. The darkest day of the year is June 24, with an average of 4.3 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in ItaguaçubrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhFeb 76.8 kWhFeb 76.8 kWhJun 244.3 kWhJun 244.3 kWhDec 316.3 kWhDec 316.3 kWhMay 104.8 kWhMay 104.8 kWhJul 294.8 kWhJul 294.8 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Itaguaçu are -19.802 deg latitude, -40.856 deg longitude, and 669 ft elevation.

The topography within 2 miles of Itaguaçu contains very significant variations in elevation, with a maximum elevation change of 1,060 feet and an average elevation above sea level of 645 feet. Within 10 miles contains very significant variations in elevation (4,088 feet). Within 50 miles also contains extreme variations in elevation (6,286 feet).

The area within 2 miles of Itaguaçu is covered by trees (34%), cropland (33%), grassland (18%), and shrubs (15%), within 10 miles by trees (39%) and cropland (28%), and within 50 miles by trees (47%) and cropland (23%).

Data Sources

This report illustrates the typical weather in Itaguaçu, 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, Eurico de Aguiar Salles Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Itaguaçu.

At a distance of 78 kilometers from Itaguaçu, 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 Itaguaçu 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.

Other Data

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.

Disclaimer

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.