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Average Weather in Aracaju Brazil

The climate in Aracaju is hot, oppressive, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 73°F to 88°F and is rarely below 69°F or above 91°F.

Based on the beach/pool score, the best time of year to visit Aracaju for hot-weather activities is from early July to late October.

Climate Summary

hotwarmhotJanFebMarAprMayJunJulAugSepOctNovDecNowNow76%76%39%39%overcastclearprecipitation: 5.2 inprecipitation: 5.2 in0.8 in0.8 inmuggy: 100%muggy: 100%95%95%beach/pool score: 8.0beach/pool score: 8.05.55.5
Click on each chart for more information.

Temperature

The temperature in Aracaju varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature

Average High and Low Temperature in AracajuJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FAug 281°FAug 281°FMar 1188°FMar 1188°F73°F73°F78°F78°FDec 686°FDec 686°FApr 1986°FApr 1986°FJun 2183°FJun 2183°FSep 983°FSep 983°F77°F77°F77°F77°F74°F74°F74°F74°FNowNow
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 AracajuJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcomfortablewarmhothot
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Ocho Rios, Jamaica (3,402 miles away) is the far-away foreign place with temperatures most similar to Aracaju (view comparison).

Clouds

In Aracaju, 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 Aracaju begins around May 21 and lasts for 5.0 months, ending around October 22. On July 7, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 76% of the time, and overcast or mostly cloudy 24% of the time.

The cloudier part of the year begins around October 22 and lasts for 7.0 months, ending around May 21. On December 7, the cloudiest day of the year, the sky is overcast or mostly cloudy 61% of the time, and clear, mostly clear, or partly cloudy 39% of the time.

Cloud Cover Categories

Cloud Cover Categories in AracajuclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 776%Jul 776%Dec 739%Dec 739%May 2157%May 2157%Oct 2258%Oct 2258%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

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

The wetter season lasts 4.6 months, from March 29 to August 18, with a greater than 31% chance of a given day being a wet day. The chance of a wet day peaks at 51% on July 1.

The drier season lasts 7.4 months, from August 18 to March 29. The smallest chance of a wet day is 11% on November 1.

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 51% on July 1.

Daily Chance of Precipitation

Daily Chance of Precipitation in AracajuwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 151%Jul 151%Nov 111%Nov 111%Jan 113%Jan 113%Mar 2931%Mar 2931%Aug 1831%Aug 1831%NowNowrain
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. Aracaju experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Aracaju. The most rain falls during the 31 days centered around May 19, with an average total accumulation of 5.2 inches.

The least rain falls around December 12, with an average total accumulation of 0.8 inches.

Average Monthly Rainfall

Average Monthly Rainfall in AracajuJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inMay 195.2 inMay 195.2 inDec 120.8 inDec 120.8 inNowNow
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 Aracaju does not vary substantially over the course of the year, staying within 46 minutes of 12 hours throughout. In 2021, the shortest day is June 21, with 11 hours, 29 minutes of daylight; the longest day is December 21, with 12 hours, 46 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in AracajuJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minSep 2212 hr, 6 minSep 2212 hr, 46 minDec 2112 hr, 46 minDec 2112 hr, 7 minMar 2012 hr, 7 minMar 2011 hr, 29 minJun 2111 hr, 29 minJun 21daydaynightNowNow
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 4:54 AM on November 17, and the latest sunrise is 54 minutes later at 5:48 AM on July 12. The earliest sunset is at 5:11 PM on May 29, and the latest sunset is 48 minutes later at 5:59 PM on January 25.

Daylight saving time (DST) is not observed in Aracaju during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in AracajuJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMNov 174:54 AMNov 174:54 AM5:59 PMJan 255:59 PMJan 25May 295:11 PMMay 295:11 PM5:48 AMJul 125:48 AMJul 12daySolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

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

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

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.

The perceived humidity level in Aracaju, 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 3% of 97% throughout.

Humidity Comfort Levels

Humidity Comfort Levels in AracajuJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 1095%Aug 1095%100%Jan 29100%Jan 29NowNowmiserablemiserableoppressiveoppressivemuggymuggy
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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

The windier part of the year lasts for 7.1 months, from July 13 to February 16, with average wind speeds of more than 11.5 miles per hour. The windiest day of the year is November 7, with an average hourly wind speed of 12.5 miles per hour.

The calmer time of year lasts for 4.9 months, from February 16 to July 13. The calmest day of the year is April 16, with an average hourly wind speed of 10.5 miles per hour.

Average Wind Speed

Average Wind Speed in AracajuwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphNov 712.5 mphNov 712.5 mphApr 1610.5 mphApr 1610.5 mphJul 1311.5 mphJul 1311.5 mphFeb 1611.5 mphFeb 1611.5 mphNowNow
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 Aracaju is from the east throughout the year.

Wind Direction

Wind Direction in AracajuJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNoweastsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 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

Aracaju 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 3.0 months, from February 13 to May 12, with an average temperature above 82°F. The day of the year with the warmest water is April 8, with an average temperature of 83°F.

The time of year with cooler water lasts for 3.5 months, from July 8 to October 25, with an average temperature below 79°F. The day of the year with the coolest water is August 12, with an average temperature of 78°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 Aracaju 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 Aracaju for general outdoor tourist activities is from early July to late September, with a peak score in the first week of August.

Tourism Score

Tourism Score in Aracajubest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.66.63.13.1NowNowprecipitationprecipitationcloudsclouds tourism 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 time of year to visit Aracaju for hot-weather activities is from early July to late October, with a peak score in the second week of September.

Beach/Pool Score

Beach/Pool Score in Aracajubest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.08.05.55.56.16.1NowNowprecipitationprecipitationcloudsclouds beach/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 Aracaju 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 AracajuJanFebMarAprMayJunJulAugSepOctNovDec0%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 3NowNowcomfortablewarmhot
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 percentage of time spent in various temperature bands. 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 AracajuJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FJul 490°FJul 490°FAug 3900°FAug 3900°FJun 3011,009°FJun 3011,009°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 5.1 months, from September 22 to February 26, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is November 2, with an average of 7.4 kWh.

The darker period of the year lasts for 2.7 months, from May 10 to August 2, with an average daily incident shortwave energy per square meter below 5.6 kWh. The darkest day of the year is June 20, with an average of 5.1 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in AracajubrightbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhNov 27.4 kWhNov 27.4 kWhJun 205.1 kWhJun 205.1 kWhSep 226.9 kWhSep 226.9 kWhFeb 266.9 kWhFeb 266.9 kWhMay 105.6 kWhMay 105.6 kWhAug 25.6 kWhAug 25.6 kWhNowNow
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 Aracaju are -10.911 deg latitude, -37.072 deg longitude, and 36 ft elevation.

The topography within 2 miles of Aracaju contains only modest variations in elevation, with a maximum elevation change of 220 feet and an average elevation above sea level of 41 feet. Within 10 miles also contains only modest variations in elevation (427 feet). Within 50 miles contains only modest variations in elevation (2,208 feet).

The area within 2 miles of Aracaju is covered by artificial surfaces (66%) and water (10%), within 10 miles by water (36%) and trees (17%), and within 50 miles by water (53%) and trees (13%).

Data Sources

This report illustrates the typical weather in Aracaju, 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, Aracaju Aeroporto, in our network suitable to be used as a proxy for the historical temperature and dew point records of Aracaju.

At a distance of 8 kilometers from Aracaju, 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 Aracaju 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 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.

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.