September Weather in Stilfontein, South Africa

Last updated: August 31, 2025

In September, the average temperature in Stilfontein, South Africa is a comfortable 19°C (66°F). However, temperatures can vary significantly, dipping to a chilly 0°C (33°F) and soaring to a warm 34°C (94°F). Precipitation is minimal, with just 6 mm (0.2 in) expected over 1 day, and the average humidity sitting at a pleasant 56%. Enjoy the mild climate!

September Temperature in Stilfontein

In September in Stilfontein, the average temperature is 19°C (66°F), with maximums reaching 34°C (94°F) and minimums plummeting to as low as 0°C (33°F). Be prepared for a range of weather conditions while traveling this month.

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

The chart illustrates September temperature patterns in Stilfontein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stilfontein, September typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (94°F) and lows dropping to around 0°C (33°F).

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

September Precipitation in Stilfontein

In Stilfontein in September, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

September Precipitation Trends in Stilfontein

The chart displays monthly precipitation patterns in Stilfontein, 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 Stilfontein, September typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 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 Stilfontein

In Stilfontein in September humidity is 56%. With an average temperature of 19°C (66°F), this humidity feels like a comfortable blanket wrapping around you, making it pleasant for traveling and exploring, as long as you're prepared for a slight stickiness in the air.

September Average Humidity in Stilfontein

This chart illustrates the average monthly humidity levels in Stilfontein, 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 Stilfontein is approximately 56%, 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 Stilfontein

In Stilfontein 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 Stilfontein.

Maximum UV Index Levels in Stilfontein for September

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

Data source: Stilfontein 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 Stilfontein Compares to Other Months

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

This table compares monthly weather conditions in Stilfontein, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	101 mm (4.0 inches)	71%	extreme
February Weather	22°C (72°F)	110 mm (4.3 inches)	70%	extreme
March Weather	21°C (70°F)	50 mm (2.0 inches)	74%	extreme
April Weather	18°C (64°F)	52 mm (2.1 inches)	75%	extreme
May Weather	14°C (58°F)	6 mm (0.3 inches)	70%	high
June Weather	11°C (52°F)	7 mm (0.3 inches)	65%	moderate
July Weather	11°C (51°F)	2 mm (0.1 inches)	59%	high
August Weather	15°C (58°F)	3 mm (0.1 inches)	56%	very high
September Weather	19°C (66°F)	6 mm (0.2 inches)	56%	extreme
October Weather	21°C (70°F)	38 mm (1.5 inches)	54%	extreme
November Weather	22°C (72°F)	72 mm (2.8 inches)	59%	extreme
December Weather	23°C (73°F)	121 mm (4.8 inches)	67%	extreme