May Weather in Sawākin Sudan
Daily high temperatures increase by 7°F, from 91°F to 98°F, rarely falling below 87°F or exceeding 102°F.
Daily low temperatures increase by 4°F, from 76°F to 80°F, rarely falling below 72°F or exceeding 83°F.
For reference, on August 2, the hottest day of the year, temperatures in Sawākin typically range from 87°F to 103°F, while on February 19, the coldest day of the year, they range from 69°F to 79°F.
Average High and Low Temperature in May in Sawākin
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. 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.
Average Hourly Temperature in May in Sawākin
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The month of May in Sawākin experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 14% to 27%.
The clearest day of the month is May 3, with clear, mostly clear, or partly cloudy conditions 86% of the time.
For reference, on September 9, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 69%, while on November 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 89%.
Cloud Cover Categories in May in Sawākin
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Sawākin, the chance of a wet day over the course of May is essentially constant, remaining around 2% throughout.
For reference, the year's highest daily chance of a wet day is 5% on October 28, and its lowest chance is 0% on June 13.
Probability of Precipitation in May in Sawākin
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during May in Sawākin is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.3 inches or falling below -0.0 inches.
Average Monthly Rainfall in May in Sawākin
Over the course of May in Sawākin, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 22 minutes, implying an average daily increase of 43 seconds, and weekly increase of 5 minutes, 2 seconds.
The shortest day of the month is May 1, with 12 hours, 50 minutes of daylight and the longest day is May 31, with 13 hours, 12 minutes of daylight.
Hours of Daylight and Twilight in May in Sawākin
The latest sunrise of the month in Sawākin is 5:02 AM on May 1 and the earliest sunrise is 10 minutes earlier at 4:52 AM on May 31.
The earliest sunset is 5:53 PM on May 1 and the latest sunset is 11 minutes later at 6:04 PM on May 31.
Daylight saving time is not observed in Sawākin during 2021.
For reference, on June 21, the longest day of the year, the Sun rises at 4:53 AM and sets 13 hours, 17 minutes later, at 6:10 PM, while on December 21, the shortest day of the year, it rises at 5:59 AM and sets 10 hours, 59 minutes later, at 4:58 PM.
Sunrise & Sunset with Twilight in May in Sawākin
The figure below presents a compact representation of key lunar data for May 2021. 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.
Moon Rise, Set & Phases in May in Sawākin
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 Sawākin is very rapidly decreasing during May, falling from 55% to 29% over the course of the month.
For reference, on October 24, the muggiest day of the year, there are muggy conditions 97% of the time, while on June 15, the least muggy day of the year, there are muggy conditions 21% of the time.
Humidity Comfort Levels in May in Sawākin
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Sawākin is gradually decreasing during May, decreasing from 8.9 miles per hour to 8.0 miles per hour over the course of the month.
For reference, on January 9, the windiest day of the year, the daily average wind speed is 11.9 miles per hour, while on September 9, the calmest day of the year, the daily average wind speed is 6.5 miles per hour.
Average Wind Speed in May in Sawākin
The hourly average wind direction in Sawākin throughout May is predominantly from the north, with a peak proportion of 71% on May 26.
Wind Direction in May in Sawākin
Sawākin is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Sawākin is gradually increasing during May, rising by 2°F, from 83°F to 85°F, over the course of the month.
Average Water Temperature in May in Sawākin
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 Sawākin 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.
Time Spent in Various Temperature Bands and the Growing Season in May in Sawākin
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
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 Sawākin are very rapidly increasing during May, increasing by 1,004°F, from 3,179°F to 4,183°F, over the course of the month.
Growing Degree Days in May in Sawākin
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 Sawākin is essentially constant during May, remaining around 7.5 kWh throughout.
The highest average daily incident shortwave solar energy during May is 7.6 kWh on May 3.
Average Daily Incident Shortwave Solar Energy in May in Sawākin
For the purposes of this report, the geographical coordinates of Sawākin are 19.106 deg latitude, 37.332 deg longitude, and 13 ft elevation.
The topography within 2 miles of Sawākin contains only modest variations in elevation, with a maximum elevation change of 118 feet and an average elevation above sea level of 28 feet. Within 10 miles contains only modest variations in elevation (1,316 feet). Within 50 miles contains very significant variations in elevation (5,479 feet).
The area within 2 miles of Sawākin is covered by sparse vegetation (39%), artificial surfaces (36%), and bare soil (20%), within 10 miles by bare soil (40%) and water (38%), and within 50 miles by bare soil (47%) and water (42%).
This report illustrates the typical weather in Sawākin, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Port Sudan, in our network suitable to be used as a proxy for the historical temperature and dew point records of Sawākin.
At a distance of 54 kilometers from Sawākin, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Sawākin according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for airports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.