April Weather in Durban South Africa

Daily high temperatures decrease by 3°F, from 80°F to 77°F, rarely falling below 72°F or exceeding 84°F.

Daily low temperatures decrease by 5°F, from 69°F to 64°F, rarely falling below 59°F or exceeding 73°F.

For reference, on February 15, the hottest day of the year, temperatures in Durban typically range from 73°F to 82°F, while on July 3, the coldest day of the year, they range from 57°F to 72°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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.

Paranaguá, Brazil (4,781 miles away) and Pouébo, New Caledonia (7,797 miles) are the far-away foreign places with temperatures most similar to Durban (view comparison).

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The month of April in Durban experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 24% throughout the month.

The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 78% of the time.

For reference, on October 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 41%, while on July 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 85%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Durban, the chance of a wet day over the course of April is very rapidly decreasing, starting the month at 25% and ending it at 13%.

For reference, the year's highest daily chance of a wet day is 47% on December 18, and its lowest chance is 7% on July 3.

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 April in Durban is decreasing, starting the month at 2.3 inches, when it rarely exceeds 4.6 inches or falls below 0.7 inches, and ending the month at 1.4 inches, when it rarely exceeds 3.3 inches or falls below 0.2 inches.

Over the course of April in Durban, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 48 minutes, implying an average daily decrease of 1 minute, 40 seconds, and weekly decrease of 11 minutes, 37 seconds.

The shortest day of the month is April 30, with 10 hours, 57 minutes of daylight and the longest day is April 1, with 11 hours, 45 minutes of daylight.

The earliest sunrise of the month in Durban is 6:06 AM on April 1 and the latest sunrise is 18 minutes later at 6:24 AM on April 30.

The latest sunset is 5:52 PM on April 1 and the earliest sunset is 31 minutes earlier at 5:21 PM on April 30.

Daylight saving time is not observed in Durban during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 4:52 AM and sets 14 hours, 4 minutes later, at 6:56 PM, while on June 20, the shortest day of the year, it rises at 6:50 AM and sets 10 hours, 13 minutes later, at 5:04 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 April 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 Durban is very rapidly decreasing during April, falling from 75% to 37% over the course of the month.

For reference, on February 4, the muggiest day of the year, there are muggy conditions 91% of the time, while on July 2, the least muggy day of the year, there are muggy conditions 1% 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 Durban is gradually decreasing during April, decreasing from 10.8 miles per hour to 10.3 miles per hour over the course of the month.

For reference, on October 23, the windiest day of the year, the daily average wind speed is 13.0 miles per hour, while on May 9, the calmest day of the year, the daily average wind speed is 10.0 miles per hour.

The hourly average wind direction in Durban throughout April is predominantly from the south, with a peak proportion of 36% on April 29.

Durban 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 Durban is essentially constant during April, remaining within 1°F of 76°F throughout.

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 Durban 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 Durban are rapidly increasing during April, increasing by 659°F, from 6,088°F to 6,746°F, over the course of the month.

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 Durban is gradually decreasing during April, falling by 1.0 kWh, from 5.2 kWh to 4.2 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Durban are -29.858 deg latitude, 31.029 deg longitude, and 69 ft elevation.

The topography within 2 miles of Durban contains only modest variations in elevation, with a maximum elevation change of 341 feet and an average elevation above sea level of 34 feet. Within 10 miles contains only modest variations in elevation (1,381 feet). Within 50 miles contains very significant variations in elevation (4,984 feet).

The area within 2 miles of Durban is covered by water (46%) and artificial surfaces (39%), within 10 miles by water (51%) and artificial surfaces (40%), and within 50 miles by water (53%) and cropland (22%).