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May Weather in Darkton Swaziland

Daily high temperatures decrease by 3°F, from 68°F to 65°F, rarely falling below 57°F or exceeding 76°F.

Daily low temperatures decrease by 6°F, from 48°F to 42°F, rarely falling below 37°F or exceeding 53°F.

For reference, on January 19, the hottest day of the year, temperatures in Darkton typically range from 58°F to 73°F, while on July 7, the coldest day of the year, they range from 40°F to 63°F.

Average High and Low Temperature in May in Darkton

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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 Darkton

Average Hourly Temperature in May in DarktonMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAprJunvery coldcoldcoldcoolcoolcomfortable
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Isla Vista, California, United States (10,630 miles away) and Campos do Jordão, Brazil (4,756 miles) are the far-away foreign places with temperatures most similar to Darkton (view comparison).

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The month of May in Darkton experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 13% 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 November 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 45%, while on June 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.

Cloud Cover Categories in May in Darkton

Cloud Cover Categories in May in DarktonMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunMay 185%May 185%May 3189%May 3189%May 1186%May 1186%May 2188%May 2188%clearmostly clearpartly cloudyovercastmostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Darkton, the chance of a wet day over the course of May is decreasing, starting the month at 10% and ending it at 5%.

For reference, the year's highest daily chance of a wet day is 53% on December 17, and its lowest chance is 2% on July 5.

Probability of Precipitation in May in Darkton

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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 Darkton is gradually decreasing, starting the month at 0.8 inches, when it rarely exceeds 2.0 inches, and ending the month at 0.3 inches, when it rarely exceeds 1.2 inches or falls below -0.0 inches.

Average Monthly Rainfall in May in Darkton

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of May in Darkton, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 29 minutes, implying an average daily decrease of 59 seconds, and weekly decrease of 6 minutes, 53 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 in Darkton

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Darkton is 6:19 AM on May 1 and the latest sunrise is 16 minutes later at 6:35 AM on May 31.

The latest sunset is 5:25 PM on May 1 and the earliest sunset is 14 minutes earlier at 5:11 PM on May 31.

Daylight saving time is not observed in Darkton during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:00 AM and sets 13 hours, 47 minutes later, at 6:47 PM, while on June 20, the shortest day of the year, it rises at 6:42 AM and sets 10 hours, 30 minutes later, at 5:12 PM.

Sunrise & Sunset with Twilight in May in Darkton

The solar day over the course of May. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

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.

Solar Elevation and Azimuth in May in Darkton

Solar Elevation and Azimuth in May in DarktonMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAprJun001010202020303040405000010102020303030404050
northeastsouthwest
Solar elevation and azimuth over the course of May 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

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

Moon Rise, Set & Phases in May in Darkton

Moon Rise, Set & Phases in May in DarktonMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAprJunApr 88:22 PMApr 88:22 PMApr 241:50 AMApr 241:50 AMMay 85:23 AMMay 85:23 AMMay 233:54 PMMay 233:54 PMJun 62:38 PMJun 62:38 PMJun 223:09 AMJun 223:09 AM5:33 AM5:33 AM5:37 PM5:37 PM5:11 PM5:11 PM6:31 AM6:31 AM6:33 AM6:33 AM5:29 PM5:29 PM4:59 PM4:59 PM7:19 AM7:19 AM6:29 AM6:29 AM4:59 PM4:59 PM4:31 PM4:31 PM7:09 AM7:09 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
May 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
50%-1:02 PMWSW-6:01 AMN232,893 mi
2
42%12:00 AMESE1:44 PMWSW-6:55 AMN230,501 mi
3
30%1:05 AMESE2:21 PMWSW-7:46 AMN228,392 mi
4
20%2:10 AME2:56 PMW-8:35 AMN226,763 mi
5
11%3:14 AME3:31 PMW-9:24 AMN225,821 mi
6
4%4:19 AME4:07 PMWNW-10:13 AMN225,739 mi
7
1%5:25 AMENE4:46 PMWNW-11:05 AMN226,619 mi
8
0%6:33 AMENE5:29 PMWNW-12:01 PMN228,459 mi
9
2%7:41 AMENE6:18 PMWNW-12:59 PMN231,138 mi
10
7%8:48 AMENE7:13 PMWNW-2:00 PMN234,429 mi
11
14%9:51 AMENE8:11 PMWNW-3:01 PMN238,034 mi
12
23%10:46 AMENE9:12 PMWNW-3:59 PMN241,632 mi
13
32%11:33 AMENE10:12 PMWNW-4:53 PMN244,928 mi
14
42%12:14 PMENE11:09 PMWNW-5:42 PMN247,686 mi
15
50%12:49 PMENE--6:26 PMN249,738 mi
16
62%-12:04 AMWNW1:20 PMENE7:08 PMN250,993 mi
17
71%-12:56 AMW1:48 PME7:47 PMN251,430 mi
18
79%-1:47 AMW2:16 PME8:26 PMN251,091 mi
19
87%-2:38 AMW2:43 PME9:04 PMN250,069 mi
20
93%-3:29 AMW3:12 PMESE9:45 PMN248,493 mi
21
97%-4:23 AMWSW3:43 PMESE10:28 PMN246,515 mi
22
100%-5:19 AMWSW4:18 PMESE11:15 PMN244,290 mi
23
100%-6:18 AMWSW4:59 PMESE--
24
100%-7:19 AMWSW5:47 PMESE12:06 AMN241,968 mi
25
98%-8:20 AMWSW6:41 PMESE1:02 AMS239,672 mi
26
94%-9:19 AMWSW7:42 PMESE2:00 AMS237,496 mi
27
87%-10:13 AMWSW8:47 PMESE2:59 AMS235,496 mi
28
78%-11:01 AMWSW9:53 PMESE3:57 AMN233,701 mi
29
68%-11:44 AMWSW10:58 PMESE4:51 AMN232,125 mi
30
50%-12:21 PMWSW-5:42 AMN230,786 mi
31
45%12:01 AME12:56 PMW-6:31 AMN229,725 mi

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 Darkton is essentially constant during May, remaining around 0% throughout.

For reference, on February 5, the muggiest day of the year, there are muggy conditions 8% of the time, while on May 5, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in May in Darkton

Humidity Comfort Levels in May in DarktonMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AprJunMay 10%May 10%May 310%May 310%May 110%May 110%May 210%May 210%humidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Darkton is gradually increasing during May, increasing from 4.8 miles per hour to 5.3 miles per hour over the course of the month.

For reference, on September 24, the windiest day of the year, the daily average wind speed is 6.6 miles per hour, while on March 30, the calmest day of the year, the daily average wind speed is 4.5 miles per hour.

Average Wind Speed in May in Darkton

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Darkton throughout May is predominantly from the west, with a peak proportion of 45% on May 31.

Wind Direction in May in Darkton

Wind Direction in May in DarktonEWMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%AprJunwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

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).

While it does not do so every year, freezing temperatures are seen in Darkton over some winters. The day least likely to be in the growing season is July 13, with a 68% chance.

Time Spent in Various Temperature Bands and the Growing Season in May in Darkton

Time Spent in Various Temperature Bands and the Growing Season in May in Darktongrowing seasonMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJun100%May 1100%May 193%May 3193%May 3199%May 1199%May 1198%May 2198%May 21very coldcoldcoolcomfortablewarm
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 percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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 Darkton are increasing during May, increasing by 184°F, from 3,170°F to 3,353°F, over the course of the month.

Growing Degree Days in May in Darkton

The average growing degree days accumulated over the course of May, with 25th to 75th and 10th to 90th percentile bands.

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 Darkton is gradually decreasing during May, falling by 0.6 kWh, from 4.9 kWh to 4.2 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in May in Darkton

Average Daily Incident Shortwave Solar Energy in May in DarktonMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhAprJunMay 14.9 kWhMay 14.9 kWhMay 314.2 kWhMay 314.2 kWhMay 114.6 kWhMay 114.6 kWhMay 214.4 kWhMay 214.4 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Darkton are -26.233 deg latitude, 31.033 deg longitude, and 4,291 ft elevation.

The topography within 2 miles of Darkton contains very significant variations in elevation, with a maximum elevation change of 1,161 feet and an average elevation above sea level of 4,488 feet. Within 10 miles contains very significant variations in elevation (3,281 feet). Within 50 miles also contains extreme variations in elevation (5,932 feet).

The area within 2 miles of Darkton is covered by cropland (79%) and grassland (15%), within 10 miles by grassland (73%) and cropland (20%), and within 50 miles by grassland (42%) and cropland (31%).

This report illustrates the typical weather in Darkton, 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 are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Darkton.

For each station, the records are corrected for the elevation difference between that station and Darkton according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Darkton is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Darkton and a given station.

The stations contributing to this reconstruction are:

  • Nelspruit Airport (FANS, 74%, 55 mi, north, -1,394 ft elevation change)
  • Standerton (FASR, 26%, 122 mi, southwest, 896 ft elevation change)

To get a sense of how much these sources agree with each other, you can view a comparison of Darkton and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

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 © OpenStreetMap contributors.

Disclaimer

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.

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