Spring Weather in Juba South SudanDaily high temperatures decrease by 12°F, from 102°F to 90°F, rarely falling below 83°F or exceeding 107°F. The highest daily average high temperature is 102°F on March 4. Daily low temperatures decrease by 4°F, from 78°F to 73°F, rarely falling below 71°F or exceeding 82°F. The highest daily average low temperature is 78°F on March 14. For reference, on March 2, the hottest day of the year, temperatures in Juba typically range from 78°F to 102°F, while on August 5, the coldest day of the year, they range from 71°F to 86°F. The figure below shows you a compact characterization of the hourly average spring temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. San Carlos, Venezuela (6,859 miles away) and São Pedro do Piauí, Piauí, Brazil (5,185 miles) are the far-away foreign places with temperatures most similar to Juba (view comparison). CloudsThe spring in Juba experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 76% throughout the season. The highest chance of overcast or mostly cloudy conditions is 81% on April 19. The clearest day of the spring is May 31, with clear, mostly clear, or partly cloudy conditions 29% of the time. For reference, on April 19, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 81%, while on September 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 52%. 
Compare Juba to:PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Juba, the chance of a wet day over the course of the spring is very rapidly increasing, starting the season at 8% and ending it at 56%. For reference, the year's highest daily chance of a wet day is 69% on August 12, and its lowest chance is 2% on January 22. RainfallTo show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during the spring in Juba is very rapidly increasing, starting the season at 0.5 inches, when it rarely exceeds 1.4 inches, and ending the season at 4.6 inches, when it rarely exceeds 8.4 inches or falls below 1.5 inches. The highest average 31-day accumulation is 4.7 inches on May 19. Average Monthly Rainfall in the Spring in Juba
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 snowfall.
SunOver the course of the spring in Juba, the length of the day is gradually increasing. From the start to the end of the season, the length of the day increases by 21 minutes, implying an average daily increase of 14 seconds, and weekly increase of 1 minute, 39 seconds. The shortest day of the spring is March 1, with 12 hours, 2 minutes of daylight and the longest day is May 31, with 12 hours, 23 minutes of daylight. The latest sunrise of the spring in Juba is 6:05 AM on March 1 and the earliest sunrise is 26 minutes earlier at 5:39 AM on May 23. The latest sunset is 6:06 PM on March 1 and the earliest sunset is 7 minutes earlier at 5:59 PM on May 1. Daylight saving time is not observed in Juba during 2026. For reference, on June 21, the longest day of the year, the Sun rises at 5:43 AM and sets 12 hours, 24 minutes later, at 6:07 PM, while on December 21, the shortest day of the year, it rises at 5:56 AM and sets 11 hours, 51 minutes later, at 5:47 PM. Sunrise & Sunset with Twilight in the Spring in Juba
The solar day in the spring. 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 figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. Solar Elevation and Azimuth in the Spring in Juba
northeastsouthwest
Solar elevation and azimuth in the the spring of 2026. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).
MoonThe figure below presents a compact representation of key lunar data for the spring of 2026. 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon. HumidityWe 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 chance that a given day will be muggy in Juba is very rapidly increasing during the spring, rising from 9% to 89% over the course of the season. For reference, on August 12, the muggiest day of the year, there are muggy conditions 97% of the time, while on February 3, the least muggy day of the year, there are muggy conditions 3% of the time. WindThis 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 Juba is rapidly decreasing during the spring, decreasing from 8.0 miles per hour to 4.7 miles per hour over the course of the season. For reference, on February 12, the windiest day of the year, the daily average wind speed is 8.1 miles per hour, while on July 19, the calmest day of the year, the daily average wind speed is 4.2 miles per hour. The wind direction in Juba during the spring is predominantly out of the east from March 1 to April 30 and the south from April 30 to May 31. Wind Direction in the Spring in Juba
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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).
Growing SeasonDefinitions 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 Juba 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 the Spring in Juba
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. The average accumulated growing degree days in Juba are very rapidly increasing during the spring, increasing by 2,936°F, from 1,935°F to 4,871°F, over the course of the season. Solar EnergyThis 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 in Juba is decreasing during the spring, falling by 1.1 kWh, from 6.3 kWh to 5.2 kWh, over the course of the season. TopographyFor the purposes of this report, the geographical coordinates of Juba are 4.852 deg latitude, 31.582 deg longitude, and 1,699 ft elevation. The topography within 2 miles of Juba contains only modest variations in elevation, with a maximum elevation change of 279 feet and an average elevation above sea level of 1,603 feet. Within 10 miles contains only modest variations in elevation (1,001 feet). Within 50 miles contains very significant variations in elevation (3,163 feet). The area within 2 miles of Juba is covered by artificial surfaces (99%), within 10 miles by shrubs (66%), and within 50 miles by shrubs (54%) and trees (27%). Data SourcesThis report illustrates the typical weather in Juba, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Juba is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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. The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Juba, according to the International Standard Atmosphere . 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. 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 © OpenStreetMap contributors. DisclaimerThe 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. Please review our full terms contained on our Terms of Service page. |
