Climate and Average Weather Year Round in Wad Rāwah Sudan

In Wad Rāwah, the summers are short, sweltering, arid, and partly cloudy and the winters are short, warm, dry, windy, and mostly clear. Over the course of the year, the temperature typically varies from 66°F to 106°F and is rarely below 59°F or above 110°F.

Based on the beach/pool score, the best time of year to visit Wad Rāwah for hot-weather activities is from early November to mid March.

The hot season lasts for 2.5 months, from April 6 to June 22, with an average daily high temperature above 102°F. The hottest month of the year in Wad Rāwah is May, with an average high of 105°F and low of 86°F.

The cool season lasts for 2.1 months, from December 7 to February 12, with an average daily high temperature below 91°F. The coldest month of the year in Wad Rāwah is January, with an average low of 66°F and high of 88°F.

In Wad Rāwah, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Wad Rāwah begins around October 7 and lasts for 7.8 months, ending around June 1.

The clearest month of the year in Wad Rāwah is November, during which on average the sky is clear, mostly clear, or partly cloudy 81% of the time.

The cloudier part of the year begins around June 1 and lasts for 4.2 months, ending around October 7.

The cloudiest month of the year in Wad Rāwah is August, during which on average the sky is overcast or mostly cloudy 67% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Wad Rāwah varies significantly throughout the year.

The wetter season lasts 2.4 months, from July 2 to September 14, with a greater than 20% chance of a given day being a wet day. The month with the most wet days in Wad Rāwah is August, with an average of 11.7 days with at least 0.04 inches of precipitation.

The drier season lasts 9.6 months, from September 14 to July 2. The month with the fewest wet days in Wad Rāwah 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 Wad Rāwah is August, with an average of 11.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 41% on August 14.

Rainfall

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. Wad Rāwah experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 3.5 months, from June 16 to October 1, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Wad Rāwah is August, with an average rainfall of 2.3 inches.

The rainless period of the year lasts for 8.5 months, from October 1 to June 16. The month with the least rain in Wad Rāwah is January, with an average rainfall of -0.0 inches.

The length of the day in Wad Rāwah varies over the course of the year. In 2024, the shortest day is December 21, with 11 hours, 14 minutes of daylight; the longest day is June 20, with 13 hours, 2 minutes of daylight.

The earliest sunrise is at 5:16 AM on June 2, and the latest sunrise is 1 hour, 1 minute later at 6:17 AM on January 22. The earliest sunset is at 5:14 PM on November 21, and the latest sunset is 1 hour, 8 minutes later at 6:22 PM on July 9.

Daylight saving time (DST) is not observed in Wad Rāwah during 2024.

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

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.

Wad Rāwah experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.7 months, from May 30 to October 21, during which time the comfort level is muggy, oppressive, or miserable at least 22% of the time. The month with the most muggy days in Wad Rāwah is August, with 27.0 days that are muggy or worse.

The month with the fewest muggy days in Wad Rāwah is February, with 0.0 days that are muggy or worse.

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 Wad Rāwah experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from November 3 to May 6, with average wind speeds of more than 9.8 miles per hour. The windiest month of the year in Wad Rāwah is February, with an average hourly wind speed of 12.4 miles per hour.

The calmer time of year lasts for 5.9 months, from May 6 to November 3. The calmest month of the year in Wad Rāwah is October, with an average hourly wind speed of 7.7 miles per hour.

The predominant average hourly wind direction in Wad Rāwah varies throughout the year.

The wind is most often from the south for 4.7 months, from May 23 to October 15, with a peak percentage of 79% on September 2. The wind is most often from the north for 7.3 months, from October 15 to May 23, with a peak percentage of 95% on January 1.

To characterize how pleasant the weather is in Wad Rāwah 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 Wad Rāwah for general outdoor tourist activities is from mid December to mid February, with a peak score in the second week of January.

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 Wad Rāwah for hot-weather activities is from early November to mid March, with a peak score in the last week of November.

Methodology

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 Wad Rāwah 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.

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 2.4 months, from March 10 to May 21, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest month of the year in Wad Rāwah is April, with an average of 7.6 kWh.

The darker period of the year lasts for 1.9 months, from July 18 to September 14, with an average daily incident shortwave energy per square meter below 5.7 kWh. The darkest month of the year in Wad Rāwah is August, with an average of 5.3 kWh.

For the purposes of this report, the geographical coordinates of Wad Rāwah are 15.160 deg latitude, 33.140 deg longitude, and 1,293 ft elevation.

The topography within 2 miles of Wad Rāwah contains only modest variations in elevation, with a maximum elevation change of 121 feet and an average elevation above sea level of 1,287 feet. Within 10 miles also contains only modest variations in elevation (135 feet). Within 50 miles contains only modest variations in elevation (709 feet).

The area within 2 miles of Wad Rāwah is covered by cropland (71%) and artificial surfaces (13%), within 10 miles by cropland (65%) and bare soil (23%), and within 50 miles by cropland (51%) and bare soil (30%).