April weather forecast
Johannesburg, South Africa

April brings further changes to Johannesburg's climate, introducing welcome freshness to the city's weather. With rainfall amounts dwindling to just 54mm (2.13"), April experiences a considerable decrease from the previous month, marking the beginning of the city's dry season. In fact, despite the slight decrease in temperatures, ample daylight and sunny weather make April an attractive month for outdoor activities in Johannesburg. The UV index also decreases, lowering the sunburn risk and making outside explorations more comfortable. As the Autumn season solidifies, the weather remains temperate and inviting.

Temperature

With the transition into April, Johannesburg notes an average high-temperature of an agreeable 21.1°C (70°F), closely resembling March. Johannesburg reports an average nighttime low-temperature of 10.3°C (50.5°F) in April.

Humidity

In April, the average relative humidity is 65%.

Rainfall

In Johannesburg, during April, the rain falls for 8.6 days and regularly aggregates up to 54mm (2.13") of precipitation. In Johannesburg, during the entire year, the rain falls for 99.3 days and collects up to 713mm (28.07") of precipitation.

Daylight

In Johannesburg, the average length of the day in April is 11h and 28min.
On the first day of April in Johannesburg, sunrise is at 06:17 and sunset at 18:05. On the last day of the month, sunrise is at 06:31 and sunset at 17:38 SAST.

Sunshine

The average sunshine in April in Johannesburg is 7.9h.

UV index

In April, the average daily maximum UV index is 9. A UV Index of 8 to 10 symbolizes a very high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 9 during April translates into the following directions:
Precautions are essential; the risk of damage to unprotected skin and eyes is too high. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.