Winter Weather in Tandaltī Sudan

Daily high temperatures increase by 4°F, from 94°F to 98°F, rarely falling below 84°F or exceeding 105°F. The lowest daily average high temperature is 90°F on January 6.

Daily low temperatures are around 63°F, rarely falling below 54°F or exceeding 72°F. The lowest daily average low temperature is 60°F on January 11.

For reference, on April 28, the hottest day of the year, temperatures in Tandaltī typically range from 77°F to 106°F, while on January 11, the coldest day of the year, they range from 60°F to 91°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.

Ndibène Dahra, Senegal (3,173 miles away) is the far-away foreign place with temperatures most similar to Tandaltī (view comparison).

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The winter in Tandaltī experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 30% to 36%.

The clearest day of the winter is December 1, with clear, mostly clear, or partly cloudy conditions 70% of the time.

For reference, on August 17, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 74%, while on November 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%.

Over the course of the winter in Tandaltī, the length of the day is gradually increasing. From the start to the end of the season, the length of the day increases by 27 minutes, implying an average daily increase of 18 seconds, and weekly increase of 2 minutes, 9 seconds.

The shortest day of the winter is December 22, with 11 hours, 22 minutes of daylight and the longest day is February 28, with 11 hours, 52 minutes of daylight.

The earliest sunrise of the winter in Tandaltī is 5:59 AM on December 1 and the latest sunrise is 20 minutes later at 6:19 AM on January 24.

The earliest sunset is 5:24 PM on December 1 and the latest sunset is 37 minutes later at 6:01 PM on February 28.

Daylight saving time is not observed in Tandaltī during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:27 AM and sets 12 hours, 54 minutes later, at 6:21 PM, while on December 21, the shortest day of the year, it rises at 6:09 AM and sets 11 hours, 22 minutes later, at 5:31 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 Tandaltī is essentially constant during the winter, remaining around 0% throughout.

For reference, on August 18, the muggiest day of the year, there are muggy conditions 88% 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 Tandaltī is increasing during the winter, increasing from 10.8 miles per hour to 11.8 miles per hour over the course of the season.

For reference, on February 13, the windiest day of the year, the daily average wind speed is 12.1 miles per hour, while on October 1, the calmest day of the year, the daily average wind speed is 6.4 miles per hour.

The highest daily average wind speed during the winter is 12.1 miles per hour on February 14.

The hourly average wind direction in Tandaltī throughout the winter is predominantly from the north, with a peak proportion of 99% on December 8.

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 Tandaltī 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 Tandaltī are very rapidly decreasing during the winter, decreasing by 8,836°F, from 10,260°F to 1,424°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 Tandaltī is increasing during the winter, rising by 1.0 kWh, from 5.9 kWh to 6.9 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 5.8 kWh on December 24.

For the purposes of this report, the geographical coordinates of Tandaltī are 13.017 deg latitude, 31.867 deg longitude, and 1,385 ft elevation.

The topography within 2 miles of Tandaltī is essentially flat, with a maximum elevation change of 56 feet and an average elevation above sea level of 1,385 feet. Within 10 miles is essentially flat (98 feet). Within 50 miles contains only modest variations in elevation (810 feet).

The area within 2 miles of Tandaltī is covered by cropland (58%), artificial surfaces (29%), and sparse vegetation (13%), within 10 miles by cropland (88%), and within 50 miles by cropland (73%).