Average Weather in May in Siteki Swaziland
Daily high temperatures decrease by 3°F, from 74°F to 72°F, rarely falling below 65°F or exceeding 83°F.
Daily low temperatures decrease by 5°F, from 58°F to 54°F, rarely falling below 49°F or exceeding 63°F.
For reference, on January 19, the hottest day of the year, temperatures in Siteki typically range from 65°F to 81°F, while on July 6, the coldest day of the year, they range from 51°F to 69°F.
Average High and Low Temperature in May
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
The month of May in Siteki experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 12% throughout the month.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 89% of the time.
For reference, on December 4, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 42%, while on July 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.
Cloud Cover Categories in May
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 Siteki, the chance of a wet day over the course of May is rapidly decreasing, starting the month at 12% and ending it at 5%.
For reference, the year's highest daily chance of a wet day is 45% on December 4, and its lowest chance is 3% on July 9.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Siteki is gradually decreasing, starting the month at 0.9 inches, when it rarely exceeds 2.2 inches or falls below 0.1 inches, and ending the month at 0.4 inches, when it rarely exceeds 1.4 inches.
Average Monthly Rainfall in May
Over the course of May in Siteki, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 30 minutes, implying an average daily decrease of 1 minute, 0 seconds, and weekly decrease of 7 minutes, 0 seconds.
The shortest day of the month is May 31, with 10 hours, 36 minutes of daylight and the longest day is May 1, with 11 hours, 6 minutes of daylight.
Hours of Daylight and Twilight in May
The earliest sunrise of the month in Siteki is 6:16 AM on May 1 and the latest sunrise is 16 minutes later at 6:32 AM on May 31.
The latest sunset is 5:21 PM on May 1 and the earliest sunset is 14 minutes earlier at 5:07 PM on May 31.
Daylight saving time is not observed in Siteki during 2021.
For reference, on December 21, the longest day of the year, the Sun rises at 4:56 AM and sets 13 hours, 48 minutes later, at 6:44 PM, while on June 21, the shortest day of the year, it rises at 6:39 AM and sets 10 hours, 29 minutes later, at 5:08 PM.
Sunrise & Sunset with Twilight in May
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
The chance that a given day will be muggy in Siteki is decreasing during May, falling from 9% to 1% over the course of the month.
For reference, on February 11, the muggiest day of the year, there are muggy conditions 63% of the time, while on July 19, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in May
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Siteki is essentially constant during May, remaining within 0.2 miles per hour of 7.7 miles per hour throughout.
For reference, on September 25, the windiest day of the year, the daily average wind speed is 10.8 miles per hour, while on April 27, the calmest day of the year, the daily average wind speed is 7.5 miles per hour.
Average Wind Speed in May
The hourly average wind direction in Siteki throughout May is predominantly from the south, with a peak proportion of 34% on May 26.
Wind Direction in May
Siteki 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 Siteki is gradually decreasing during May, falling by 3°F, from 77°F to 74°F, over the course of the month.
Average Water Temperature in May
Temperatures in Siteki 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
The average accumulated growing degree days in Siteki are increasing during May, increasing by 410°F, from 5,173°F to 5,584°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Siteki is gradually decreasing during May, falling by 0.7 kWh, from 4.7 kWh to 4.0 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Siteki are -26.450 deg latitude, 31.950 deg longitude, and 2,149 ft elevation.
The topography within 2 miles of Siteki contains very significant variations in elevation, with a maximum elevation change of 869 feet and an average elevation above sea level of 2,051 feet. Within 10 miles contains very significant variations in elevation (2,064 feet). Within 50 miles contains large variations in elevation (4,951 feet).
The area within 2 miles of Siteki is covered by cropland (80%) and shrubs (17%), within 10 miles by cropland (53%) and trees (24%), and within 50 miles by cropland (25%) and shrubs (23%).
This report illustrates the typical weather in Siteki, 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, Kruger Mpumalanga International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Siteki.
At a distance of 146 kilometers from Siteki, 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 Siteki 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.
Time zones for airports and weather stations are provided by AskGeo.com .