May Weather in Randfontein, South Africa

Last updated: August 31, 2025

In May, the average temperature in Randfontein, South Africa hovers around 13°C (56°F). Visitors should prepare for a range, as temperatures can dip to a brisk -1°C (31°F) or rise to a warm 26°C (78°F). Expect a modest precipitation of 12 mm (0.5 in) spread across just 1 day, and with an average humidity of 82%, it’s advisable to pack accordingly for a comfortable stay!

May Temperature in Randfontein

In May in Randfontein, the average temperature is 13°C (56°F), with maximums reaching up to 26°C (78°F) and minimums plummeting as low as -1°C (31°F). This climate makes Randfontein an ideal destination for travelers looking to experience a variety of weather conditions throughout the month.

May Weather in Randfontein: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Randfontein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Randfontein, May typically has an average temperature of 13°C (56°F), with highs reaching up to 26°C (78°F) and lows dropping to around -1°C (31°F).

Data source: Temperature data for Randfontein generated using information from the Copernicus Climate Change Service.

May Precipitation in Randfontein

In Randfontein in May, the precipitation amount is 12 mm (0.5 in) over the course of 1 day.

May Precipitation Trends in Randfontein

The chart displays monthly precipitation patterns in Randfontein, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Randfontein, May typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Randfontein

In Randfontein in May, humidity is 82%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it feel much cooler than it is and creating a heavy atmosphere that can be exhausting for travelers.

May Average Humidity in Randfontein

This chart illustrates the average monthly humidity levels in Randfontein, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Randfontein is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Randfontein

In Randfontein in May, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Randfontein.

Maximum UV Index Levels in Randfontein for May

The chart shows the monthly maximum UV Index (UVI) for Randfontein in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Randfontein typically reaches 7, which falls under the high exposure category.

Data source: Randfontein May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How May Weather in Randfontein Compares to Other Months

Weather in Randfontein varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Randfontein, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Randfontein, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (70°F)	129 mm (5.1 inches)	79%	extreme
February Weather	20°C (68°F)	141 mm (5.5 inches)	77%	extreme
March Weather	19°C (66°F)	75 mm (3.0 inches)	77%	extreme
April Weather	16°C (62°F)	61 mm (2.4 inches)	81%	extreme
May Weather	13°C (56°F)	12 mm (0.5 inches)	82%	high
June Weather	11°C (52°F)	8 mm (0.3 inches)	73%	high
July Weather	10°C (51°F)	3 mm (0.1 inches)	71%	high
August Weather	14°C (57°F)	2 mm (0.1 inches)	68%	very high
September Weather	18°C (64°F)	8 mm (0.3 inches)	74%	extreme
October Weather	19°C (66°F)	59 mm (2.3 inches)	74%	extreme
November Weather	20°C (69°F)	100 mm (4.0 inches)	82%	extreme
December Weather	20°C (69°F)	145 mm (5.7 inches)	81%	extreme