April Weather in Tessalit Mali

Daily high temperatures increase by 6°F, from 95°F to 102°F, rarely falling below 89°F or exceeding 107°F.

Daily low temperatures increase by 7°F, from 73°F to 80°F, rarely falling below 66°F or exceeding 86°F.

For reference, on June 19, the hottest day of the year, temperatures in Tessalit typically range from 88°F to 107°F, while on January 9, the coldest day of the year, they range from 58°F to 78°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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.

Ādam, Oman (3,624 miles away) is the far-away foreign place with temperatures most similar to Tessalit (view comparison).

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The month of April in Tessalit experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 27% throughout the month. The highest chance of overcast or mostly cloudy conditions is 28% on April 18.

The clearest day of the month is April 4, with clear, mostly clear, or partly cloudy conditions 74% of the time.

For reference, on November 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 43%, while on June 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 87%.

Over the course of April in Tessalit, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 31 minutes, implying an average daily increase of 1 minute, 5 seconds, and weekly increase of 7 minutes, 34 seconds.

The shortest day of the month is April 1, with 12 hours, 21 minutes of daylight and the longest day is April 30, with 12 hours, 53 minutes of daylight.

The latest sunrise of the month in Tessalit is 5:49 AM on April 1 and the earliest sunrise is 22 minutes earlier at 5:26 AM on April 30.

The earliest sunset is 6:10 PM on April 1 and the latest sunset is 9 minutes later at 6:19 PM on April 30.

Daylight saving time is not observed in Tessalit during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:16 AM and sets 13 hours, 21 minutes later, at 6:38 PM, while on December 21, the shortest day of the year, it rises at 6:26 AM and sets 10 hours, 55 minutes later, at 5:21 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 April 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 Tessalit is essentially constant during April, remaining around 0% throughout.

For reference, on August 15, the muggiest day of the year, there are muggy conditions 12% 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 Tessalit is essentially constant during April, remaining within 0.1 miles per hour of 9.7 miles per hour throughout.

For reference, on January 22, the windiest day of the year, the daily average wind speed is 10.1 miles per hour, while on November 17, the calmest day of the year, the daily average wind speed is 8.8 miles per hour.

The hourly average wind direction in Tessalit throughout April is predominantly from the north, with a peak proportion of 56% on April 29.

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 Tessalit 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.

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 Tessalit are very rapidly increasing during April, increasing by 965°F, from 2,110°F to 3,074°F, over the course of the month.

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 Tessalit is essentially constant during April, remaining within 0.1 kWh of 7.3 kWh throughout.

For the purposes of this report, the geographical coordinates of Tessalit are 20.201 deg latitude, 1.012 deg longitude, and 1,696 ft elevation.

The topography within 2 miles of Tessalit contains only modest variations in elevation, with a maximum elevation change of 449 feet and an average elevation above sea level of 1,747 feet. Within 10 miles contains only modest variations in elevation (1,211 feet). Within 50 miles also contains very significant variations in elevation (1,473 feet).

The area within 2 miles of Tessalit is covered by bare soil (82%) and sparse vegetation (11%), within 10 miles by bare soil (86%), and within 50 miles by bare soil (94%).