Summer Weather in Aozou Chad

Daily high temperatures are around 99°F, rarely falling below 94°F or exceeding 106°F. The highest daily average high temperature is 101°F on June 7.

Daily low temperatures are around 71°F, rarely falling below 65°F or exceeding 77°F. The highest daily average low temperature is 72°F on June 8.

For reference, on June 5, the hottest day of the year, temperatures in Aozou typically range from 72°F to 101°F, while on January 4, the coldest day of the year, they range from 42°F to 71°F.

The figure below shows you a compact characterization of the hourly average summer 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.

Mariental, Namibia (3,215 miles away) is the far-away foreign place with temperatures most similar to Aozou (view comparison).

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The summer in Aozou experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 10% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 6% on June 19.

The clearest day of the summer is June 19, with clear, mostly clear, or partly cloudy conditions 94% of the time.

For reference, on December 9, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 28%, while on June 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 94%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Aozou, the chance of a wet day over the course of the summer is essentially constant, remaining around 1% throughout.

For reference, the year's highest daily chance of a wet day is 2% on May 25, and its lowest chance is 0% on October 31.

Rainfall

To 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 summer in Aozou is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.2 inches or falling below -0.0 inches.

The highest average 31-day accumulation is 0.1 inches on August 3.

Over the course of the summer in Aozou, the length of the day is decreasing. From the start to the end of the season, the length of the day decreases by 49 minutes, implying an average daily decrease of 32 seconds, and weekly decrease of 3 minutes, 46 seconds.

The shortest day of the summer is August 31, with 12 hours, 34 minutes of daylight and the longest day is June 21, with 13 hours, 28 minutes of daylight.

The earliest sunrise of the summer in Aozou is 5:06 AM on June 6 and the latest sunrise is 27 minutes later at 5:33 AM on August 31.

The latest sunset is 6:37 PM on July 3 and the earliest sunset is 30 minutes earlier at 6:07 PM on August 31.

Daylight saving time is not observed in Aozou during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:07 AM and sets 13 hours, 28 minutes later, at 6:36 PM, while on December 21, the shortest day of the year, it rises at 6:24 AM and sets 10 hours, 48 minutes later, at 5:12 PM.

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.

The figure below presents a compact representation of key lunar data for the summer of 2024. 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.

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 chance that a given day will be muggy in Aozou is essentially constant during the summer, remaining around 0% throughout.

For reference, on July 19, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

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 Aozou is essentially constant during the summer, remaining within 0.5 miles per hour of 10.4 miles per hour throughout.

For reference, on June 27, the windiest day of the year, the daily average wind speed is 10.8 miles per hour, while on December 10, the calmest day of the year, the daily average wind speed is 7.4 miles per hour.

The highest daily average wind speed during the summer is 10.8 miles per hour on June 28.

The wind direction in Aozou during the summer is predominantly out of the north from June 1 to June 2 and the east from June 2 to August 31.

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).

While it does not do so every year, freezing temperatures are seen in Aozou over some winters. The day least likely to be in the growing season is January 16, with a 70% chance.

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 Aozou are very rapidly increasing during the summer, increasing by 2,808°F, from 2,801°F to 5,609°F, over the course of the season.

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 in Aozou is essentially constant during the summer, remaining within 0.3 kWh of 7.9 kWh throughout.

The highest average daily incident shortwave solar energy during the summer is 8.3 kWh on June 28.

For the purposes of this report, the geographical coordinates of Aozou are 21.837 deg latitude, 17.427 deg longitude, and 3,432 ft elevation.

The topography within 2 miles of Aozou contains very significant variations in elevation, with a maximum elevation change of 958 feet and an average elevation above sea level of 3,322 feet. Within 10 miles contains very significant variations in elevation (2,746 feet). Within 50 miles contains large variations in elevation (5,482 feet).

The area within 2 miles of Aozou is covered by bare soil (93%), within 10 miles by bare soil (98%), and within 50 miles by bare soil (99%).