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    4. Gambēla

    Average Weather in Gambēla Ethiopia

    In Gambēla, the wet season is hot, oppressive, and overcast and the dry season is sweltering and partly cloudy. Over the course of the year, the temperature typically varies from 71°F to 101°F and is rarely below 68°F or above 107°F.

    The hot season lasts for 2.6 months, from January 27 to April 16, with an average daily high temperature above 97°F. The hottest day of the year is March 4, with an average high of 101°F and low of 78°F.

    The cool season lasts for 4.3 months, from May 30 to October 8, with an average daily high temperature below 86°F. The coldest day of the year is November 14, with an average low of 71°F and high of 89°F.

    Average High and Low Temperature

    Average High and Low Temperature in Gambēlahotcool65°F70°F75°F80°F85°F90°F95°F100°F105°F110°FJanFebMarAprMayJunJulAugSepOctNovDecNov 1489°FNov 1489°FMar 4101°FMar 4101°F71°F71°F78°F78°FJan 2797°FJan 2797°FApr 1697°FApr 1697°FMay 3086°FMay 3086°FOct 886°FOct 886°F73°F73°F76°F76°F73°F73°F72°F72°F
    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 Gambēla12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDeccomfortablewarmhotsweltering
    The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 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.

    Clouds

    In Gambēla, 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 Gambēla begins around September 17 and lasts for 5.5 months, ending around March 2. On December 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 51% of the time, and overcast or mostly cloudy 49% of the time.

    The cloudier part of the year begins around March 2 and lasts for 6.5 months, ending around September 17. On July 18, the cloudiest day of the year, the sky is overcast or mostly cloudy 77% of the time, and clear, mostly clear, or partly cloudy 23% of the time.

    Cloud Cover

    Cloud Cover in Gambēlaclearerclearercloudier0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 1877%Jul 1877%Dec 2349%Dec 2349%Sep 1763%Sep 1763%Mar 264%Mar 264%overcastmostly cloudypartly cloudymostly clearclear
    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 Gambēla varies very significantly throughout the year.

    The wetter season lasts 6.7 months, from April 15 to November 6, with a greater than 42% chance of a given day being a wet day. The chance of a wet day peaks at 81% on June 6.

    The drier season lasts 5.3 months, from November 6 to April 15. The smallest chance of a wet day is 3% on February 8.

    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 81% on June 6.

    Daily Chance of Precipitation

    Daily Chance of Precipitation in Gambēlawetdrydry0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJun 681%Jun 681%Feb 83%Feb 83%Jan 15%Jan 15%Apr 1542%Apr 1542%Nov 642%Nov 642%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. Gambēla experiences extreme seasonal variation in monthly rainfall.

    The rainy period of the year lasts for 9.0 months, from March 5 to December 5, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 6, with an average total accumulation of 8.3 inches.

    The rainless period of the year lasts for 3.0 months, from December 5 to March 5. The least rain falls around February 8, with an average total accumulation of 0.2 inches.

    Average Monthly Rainfall

    Average Monthly Rainfall in Gambēlarain0 in5 in10 in15 inJanFebMarAprMayJunJulAugSepOctNovDecJun 68.3 inJun 68.3 inFeb 80.2 inFeb 80.2 inJul 288.2 inJul 288.2 inMar 50.5 inMar 50.5 inDec 50.5 inDec 50.5 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 Gambēla does not vary substantially over the course of the year, staying within 36 minutes of 12 hours throughout. In 2017, the shortest day is December 21, with 11 hours, 39 minutes of daylight; the longest day is June 21, with 12 hours, 36 minutes of daylight.

    Hours of Daylight and Twilight

    Hours of Daylight and Twilight in Gambēla0 hr4 hr8 hr12 hr16 hr20 hr24 hrJanFebMarAprMayJunJulAugSepOctNovDec12 hr, 6 minMar 2012 hr, 6 minMar 2012 hr, 36 minJun 2112 hr, 36 minJun 2112 hr, 7 minSep 2212 hr, 7 minSep 2211 hr, 39 minDec 2111 hr, 39 minDec 21nightnightday
    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 6:22 AM on May 27, and the latest sunrise is 40 minutes later at 7:01 AM on January 29. The earliest sunset is at 6:18 PM on November 14, and the latest sunset is 46 minutes later at 7:04 PM on July 14.

    Daylight saving time (DST) is not observed in Gambēla during 2017.

    Sunrise & Sunset with Twilight

    Sunrise & Sunset with Twilight in Gambēla2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecMay 276:22 AMMay 276:22 AM7:04 PMJul 147:04 PMJul 14Nov 146:18 PMNov 146:18 PM7:01 AMJan 297:01 AMJan 29daynightnightnightnight
    The solar day over the course of the year 2017. 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.

    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.

    Gambēla experiences extreme seasonal variation in the perceived humidity.

    The muggier period of the year lasts for 8.9 months, from March 22 to December 19, during which time the comfort level is muggy, oppressive, or miserable at least 30% of the time. The muggiest day of the year is June 13, with muggy conditions 96% of the time.

    The least muggy day of the year is February 17, with muggy conditions 8% of the time.

    Humidity Comfort Levels

    Humidity Comfort Levels in Gambēlamuggy0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecFeb 178%Feb 178%96%Jun 1396%Jun 13Mar 2230%Mar 2230%Dec 1930%Dec 1930%oppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydry
    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 Gambēla does not vary significantly over the course of the year, remaining within 0.5 miles per hour of 2.7 miles per hour throughout.

    Average Wind Speed

    Average Wind Speed in Gambēla0.0 mph0.5 mph1.0 mph1.5 mph2.0 mph2.5 mph3.0 mph3.5 mph4.0 mph4.5 mph5.0 mphJanFebMarAprMayJunJulAugSepOctNovDecFeb 193.1 mphFeb 193.1 mphOct 162.2 mphOct 162.2 mph
    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 Gambēla varies throughout the year.

    The wind is most often from the south for 5.0 months, from March 27 to August 26, with a peak percentage of 43% on June 7. The wind is most often from the east for 7.0 months, from August 26 to March 27, with a peak percentage of 53% on January 1.

    Wind Direction

    Wind Direction in GambēlaESE0%20%40%60%80%100%JanFebMarAprMayJunJulAugSepOctNovDecsoutheastnorthwest
    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).

    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 2.3 months, from February 5 to April 15, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is March 18, with an average of 5.8 kWh.

    The darker period of the year lasts for 2.6 months, from May 11 to July 30, with an average daily incident shortwave energy per square meter below 4.8 kWh. The darkest day of the year is June 6, with an average of 4.5 kWh.

    Average Daily Incident Shortwave Solar Energy

    Average Daily Incident Shortwave Solar Energy in Gambēlabrightdark0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhJanFebMarAprMayJunJulAugSepOctNovDecMar 185.8 kWhMar 185.8 kWhJun 64.5 kWhJun 64.5 kWhFeb 55.5 kWhFeb 55.5 kWhJul 304.7 kWhJul 304.7 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 Gambēla are 8.250 deg latitude, 34.583 deg longitude, and 1,519 ft elevation.

    The topography within 2 miles of Gambēla contains only modest variations in elevation, with a maximum elevation change of 338 feet and an average elevation above sea level of 1,505 feet. Within 10 miles contains only modest variations in elevation (2,848 feet). Within 50 miles contains large variations in elevation (9,304 feet).

    The area within 2 miles of Gambēla is covered by grassland (89%) and trees (11%), within 10 miles by grassland (85%) and trees (12%), and within 50 miles by grassland (55%) and trees (20%).

    Data Sources

    This report illustrates the typical weather in Gambēla, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

    Gambēla 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 Gambēla, 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 Tables of the Sun, Moon and Planets , 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 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.