September Weather in Randburg, South Africa

Last updated: August 31, 2025

In September, the average temperature in Randburg, South Africa is a mild 18°C (65°F). Expect daily temperatures to range from a cool 2°C (35°F) to a warm 33°C (92°F). During this period, precipitation averages just 6 mm (0.2 in) over 2 days, with an average humidity of 74%, making it a comfortable time of year to explore!

September Temperature in Randburg

In September in Randburg, the average temperature is 18°C (65°F). The maximum can reach 33°C (92°F), while the minimum can drop as low as 2°C (35°F). This diverse climate makes Randburg a great destination for travelers seeking both warmth and cool, refreshing conditions.

September Weather in Randburg: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Randburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Randburg, September typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (35°F).

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

September Precipitation in Randburg

In Randburg in September, the precipitation amount is 6 mm (0.2 in) over the course of 2 days.

September Precipitation Trends in Randburg

The chart displays monthly precipitation patterns in Randburg, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Randburg, September typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 2 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Randburg

In Randburg in September humidity is 74%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can make even short walks feel laborious, leading travelers to seek shade and refreshment more often.

September Average Humidity in Randburg

This chart illustrates the average monthly humidity levels in Randburg, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Randburg is approximately 74%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Randburg

In Randburg in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Randburg.

Maximum UV Index Levels in Randburg for September

The chart shows the monthly maximum UV Index (UVI) for Randburg in September, 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 September, the maximum UV index in Randburg typically reaches 11, which falls under the extreme exposure category.

Data source: Randburg September 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 September Weather in Randburg Compares to Other Months

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

This table compares monthly weather conditions in Randburg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (71°F)	118 mm (4.7 inches)	79%	extreme
February Weather	21°C (70°F)	122 mm (4.8 inches)	77%	extreme
March Weather	20°C (68°F)	71 mm (2.8 inches)	77%	extreme
April Weather	17°C (63°F)	50 mm (2.0 inches)	81%	very high
May Weather	14°C (58°F)	10 mm (0.4 inches)	82%	high
June Weather	11°C (53°F)	6 mm (0.2 inches)	73%	high
July Weather	11°C (52°F)	2 mm (0.1 inches)	71%	high
August Weather	14°C (58°F)	2 mm (0.1 inches)	68%	very high
September Weather	18°C (65°F)	6 mm (0.2 inches)	74%	extreme
October Weather	19°C (67°F)	52 mm (2.0 inches)	74%	extreme
November Weather	21°C (70°F)	77 mm (3.0 inches)	82%	extreme
December Weather	21°C (70°F)	131 mm (5.2 inches)	81%	extreme