Climate and Average Weather Year Round in Abéché Chad
In Abéché, the wet season is hot and muggy, the dry season is sweltering and windy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 59°F to 105°F and is rarely below 52°F or above 109°F.
Based on the beach/pool score, the best time of year to visit Abéché for hot-weather activities is from late September to late March.
Climate in Abéché
The hot season lasts for 2.9 months, from March 15 to June 12, with an average daily high temperature above 102°F. The hottest month of the year in Abéché is May, with an average high of 105°F and low of 78°F.
The cool season lasts for 1.8 months, from July 22 to September 16, with an average daily high temperature below 92°F. The coldest month of the year in Abéché is January, with an average low of 59°F and high of 93°F.
Average High and Low Temperature in Abéché
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 Abéché
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 Abéché, 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 Abéché begins around October 4 and lasts for 6.2 months, ending around April 9.
The clearest month of the year in Abéché is January, during which on average the sky is clear, mostly clear, or partly cloudy 67% of the time.
The cloudier part of the year begins around April 9 and lasts for 5.8 months, ending around October 4.
The cloudiest month of the year in Abéché is August, during which on average the sky is overcast or mostly cloudy 55% of the time.
Cloud Cover Categories in Abéché
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 Abéché varies very significantly throughout the year.
The wetter season lasts 2.2 months, from July 4 to September 12, with a greater than 32% chance of a given day being a wet day. The month with the most wet days in Abéché is August, with an average of 18.3 days with at least 0.04 inches of precipitation.
The drier season lasts 9.8 months, from September 12 to July 4. The month with the fewest wet days in Abéché is January, with an average of 0.0 days with at least 0.04 inches of precipitation.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Abéché is August, with an average of 18.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 64% on August 13.
Daily Chance of Precipitation in Abéché
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. Abéché experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 4.4 months, from May 29 to October 10, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Abéché is August, with an average rainfall of 5.7 inches.
The rainless period of the year lasts for 7.6 months, from October 10 to May 29. The month with the least rain in Abéché is January, with an average rainfall of -0.0 inches.
Average Monthly Rainfall in Abéché
The length of the day in Abéché varies over the course of the year. In 2023, the shortest day is December 22, with 11 hours, 19 minutes of daylight; the longest day is June 21, with 12 hours, 57 minutes of daylight.
Hours of Daylight and Twilight in Abéché
The earliest sunrise is at 5:07 AM on June 2, and the latest sunrise is 57 minutes later at 6:04 AM on January 23. The earliest sunset is at 5:05 PM on November 21, and the latest sunset is 1 hour, 3 minutes later at 6:08 PM on July 9.
Daylight saving time (DST) is not observed in Abéché during 2023.
Sunrise & Sunset with Twilight in Abéché
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 Abéché
The figure below presents a compact representation of key lunar data for 2023. 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 Abéché
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.
Abéché experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.6 months, from June 20 to October 9, during which time the comfort level is muggy, oppressive, or miserable at least 23% of the time. The month with the most muggy days in Abéché is August, with 28.3 days that are muggy or worse.
The least muggy day of the year is February 1, when muggy conditions are essentially unheard of.
Humidity Comfort Levels in Abéché
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 Abéché experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 7.0 months, from October 25 to May 26, with average wind speeds of more than 8.1 miles per hour. The windiest month of the year in Abéché is February, with an average hourly wind speed of 10.9 miles per hour.
The calmer time of year lasts for 5.0 months, from May 26 to October 25. The calmest month of the year in Abéché is September, with an average hourly wind speed of 5.2 miles per hour.
Average Wind Speed in Abéché
The predominant average hourly wind direction in Abéché varies throughout the year.
The wind is most often from the south for 4.1 months, from May 27 to September 30, with a peak percentage of 54% on July 14. The wind is most often from the east for 7.9 months, from September 30 to May 27, with a peak percentage of 58% on January 1.
Wind Direction in Abéché
To characterize how pleasant the weather is in Abéché 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 Abéché for general outdoor tourist activities is from early December to early February, with a peak score in the first week of January.
Tourism Score in Abéché
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 Abéché for hot-weather activities is from late September to late March, with a peak score in the first week of November.
Beach/Pool Score in Abéché
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 Abéché 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 Abéché
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 Abéché
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 2.8 months, from March 4 to May 29, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest month of the year in Abéché is April, with an average of 7.5 kWh.
The darker period of the year lasts for 1.6 months, from July 19 to September 8, with an average daily incident shortwave energy per square meter below 5.9 kWh. The darkest month of the year in Abéché is August, with an average of 5.5 kWh.
Average Daily Incident Shortwave Solar Energy in Abéché
For the purposes of this report, the geographical coordinates of Abéché are 13.829 deg latitude, 20.832 deg longitude, and 1,788 ft elevation.
The topography within 2 miles of Abéché contains only modest variations in elevation, with a maximum elevation change of 141 feet and an average elevation above sea level of 1,778 feet. Within 10 miles contains only modest variations in elevation (896 feet). Within 50 miles contains very significant variations in elevation (2,031 feet).
The area within 2 miles of Abéché is covered by grassland (51%), sparse vegetation (23%), and bare soil (22%), within 10 miles by grassland (87%), and within 50 miles by grassland (78%).
This report illustrates the typical weather in Abéché, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Abéché 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 Abéché, 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.
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.
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