September Weather in Ermelo, South Africa

Last updated: August 31, 2025

In September, the average temperature in Ermelo, South Africa hovers around 16°C (62°F). You can expect a range from a chilly 0°C (33°F) to a warm 32°C (90°F). During this month, precipitation averages 25 mm (1.0 in) over about 4 days, while the average humidity is a comfortable 74%.

September Temperature in Ermelo

In September in Ermelo, the average temperature is 16°C (62°F). Maximum temperatures can reach 32°C (90°F), while the minimum can drop as low as 0°C (33°F). Travelers should be prepared for a wide range of weather conditions and pack accordingly.

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

The chart illustrates September temperature patterns in Ermelo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ermelo, September typically has an average temperature of 16°C (62°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (33°F).

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

September Precipitation in Ermelo

In Ermelo in September, the precipitation amount is 25 mm (1.0 in) over the course of 4 days.

September Precipitation Trends in Ermelo

The chart displays monthly precipitation patterns in Ermelo, 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 Ermelo, September typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 4 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 Ermelo

In Ermelo in September, humidity is 74%. With an average temperature of 16°C (62°F), this humidity feels like a warm, heavy blanket enveloping you, making it slightly uncomfortable for traveling as it can lead to a sticky sensation that may sap your energy during outdoor activities.

September Average Humidity in Ermelo

This chart illustrates the average monthly humidity levels in Ermelo, 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 Ermelo 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 Ermelo

In Ermelo 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 Ermelo.

Maximum UV Index Levels in Ermelo for September

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

Data source: Ermelo 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 Ermelo Compares to Other Months

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

This table compares monthly weather conditions in Ermelo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (65°F)	110 mm (4.3 inches)	79%	extreme
February Weather	18°C (66°F)	122 mm (4.8 inches)	77%	extreme
March Weather	17°C (64°F)	61 mm (2.4 inches)	77%	extreme
April Weather	15°C (60°F)	54 mm (2.1 inches)	81%	very high
May Weather	13°C (55°F)	20 mm (0.8 inches)	82%	very high
June Weather	10°C (50°F)	8 mm (0.3 inches)	73%	high
July Weather	10°C (50°F)	2 mm (0.1 inches)	71%	high
August Weather	13°C (56°F)	5 mm (0.2 inches)	68%	very high
September Weather	16°C (62°F)	25 mm (1.0 inches)	74%	extreme
October Weather	17°C (62°F)	73 mm (2.9 inches)	74%	extreme
November Weather	18°C (64°F)	120 mm (4.7 inches)	82%	extreme
December Weather	18°C (65°F)	212 mm (8.3 inches)	81%	extreme