Winter Weather in Djénné Mali

Daily high temperatures increase by 4°F, from 93°F to 97°F, rarely falling below 81°F or exceeding 102°F. The lowest daily average high temperature is 88°F on January 8.

Daily low temperatures increase by 5°F, from 67°F to 72°F, rarely falling below 57°F or exceeding 78°F. The lowest daily average low temperature is 62°F on January 5.

For reference, on April 27, the hottest day of the year, temperatures in Djénné typically range from 83°F to 105°F, while on January 4, the coldest day of the year, they range from 62°F to 88°F.

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

Kalyān, India (5,123 miles away); Mohanūr, India (5,559 miles); and Nalgonda, India (5,547 miles) are the far-away foreign places with temperatures most similar to Djénné (view comparison).

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The winter in Djénné experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 43% to 38%. The lowest chance of overcast or mostly cloudy conditions is 35% on February 11.

The clearest day of the winter is February 11, with clear, mostly clear, or partly cloudy conditions 65% of the time.

For reference, on August 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 69%, while on February 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%.

Over the course of the winter in Djénné, the length of the day is gradually increasing. From the start to the end of the season, the length of the day increases by 30 minutes, implying an average daily increase of 20 seconds, and weekly increase of 2 minutes, 19 seconds.

The shortest day of the winter is December 20, with 11 hours, 18 minutes of daylight and the longest day is February 28, with 11 hours, 51 minutes of daylight.

The earliest sunrise of the winter in Djénné is 6:26 AM on December 1 and the latest sunrise is 20 minutes later at 6:46 AM on January 22.

The earliest sunset is 5:48 PM on December 1 and the latest sunset is 38 minutes later at 6:26 PM on February 28.

Daylight saving time is not observed in Djénné during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:51 AM and sets 12 hours, 57 minutes later, at 6:48 PM, while on December 21, the shortest day of the year, it rises at 6:37 AM and sets 11 hours, 18 minutes later, at 5:55 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 winter 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 Djénné is essentially constant during the winter, remaining within 1% of 1% throughout.

The lowest chance of a muggy day during the winter is 0% on December 29.

For reference, on August 2, the muggiest day of the year, there are muggy conditions 100% of the time, while on December 28, 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 Djénné is increasing during the winter, increasing from 8.9 miles per hour to 10.2 miles per hour over the course of the season.

For reference, on February 11, the windiest day of the year, the daily average wind speed is 10.5 miles per hour, while on October 14, the calmest day of the year, the daily average wind speed is 5.9 miles per hour.

The highest daily average wind speed during the winter is 10.5 miles per hour on February 13.

The wind direction in Djénné during the winter is predominantly out of the east from December 1 to February 22 and the north from February 22 to February 28.

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 Djénné 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 Djénné are very rapidly decreasing during the winter, decreasing by 9,130°F, from 10,678°F to 1,547°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 Djénné is increasing during the winter, rising by 1.2 kWh, from 5.3 kWh to 6.5 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 5.2 kWh on December 11.

For the purposes of this report, the geographical coordinates of Djénné are 13.906 deg latitude, -4.553 deg longitude, and 912 ft elevation.

The topography within 2 miles of Djénné is essentially flat, with a maximum elevation change of 62 feet and an average elevation above sea level of 891 feet. Within 10 miles is also essentially flat (89 feet). Within 50 miles is essentially flat (919 feet).

The area within 2 miles of Djénné is covered by cropland (29%), grassland (25%), sparse vegetation (20%), and bare soil (11%), within 10 miles by cropland (26%) and grassland (24%), and within 50 miles by grassland (27%) and trees (20%).