September Weather in Harrismith, South Africa

Last updated: August 31, 2025

In Harrismith, South Africa, the average temperature in September is a comfortable 15°C (60°F). However, temperatures can vary significantly, with a minimum of -1°C (30°F) and a maximum reaching up to 31°C (89°F). During this month, expect around 25 mm (1.0 in) of precipitation spread over 3 days, coupled with an average humidity level of 75%.

September Temperature in Harrismith

In September in Harrismith, the average temperature is 15°C (60°F). Maximum temperatures can reach 31°C (89°F), while minimum temperatures can drop as low as -1°C (30°F). This diverse range makes Harrismith an ideal destination for travelers seeking both warm and cool experiences during their visit.

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

The chart illustrates September temperature patterns in Harrismith, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harrismith, September typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (89°F) and lows dropping to around -1°C (30°F).

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

September Precipitation in Harrismith

In Harrismith in September, the precipitation amount is 25 mm (1.0 in) over the course of 3 days.

September Precipitation Trends in Harrismith

The chart displays monthly precipitation patterns in Harrismith, 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 Harrismith, September typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 3 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 Harrismith

In Harrismith in September, humidity is 75%. With an average temperature of 15°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities slightly uncomfortable and requiring extra hydration while exploring the sights.

September Average Humidity in Harrismith

This chart illustrates the average monthly humidity levels in Harrismith, 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 Harrismith is approximately 75%, 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 Harrismith

In Harrismith 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 Harrismith.

Maximum UV Index Levels in Harrismith for September

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

Data source: Harrismith 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 Harrismith Compares to Other Months

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

This table compares monthly weather conditions in Harrismith, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (66°F)	133 mm (5.2 inches)	85%	extreme
February Weather	19°C (66°F)	156 mm (6.1 inches)	85%	extreme
March Weather	18°C (64°F)	86 mm (3.4 inches)	86%	extreme
April Weather	15°C (59°F)	62 mm (2.5 inches)	87%	very high
May Weather	12°C (54°F)	19 mm (0.7 inches)	88%	high
June Weather	10°C (50°F)	5 mm (0.2 inches)	83%	moderate
July Weather	10°C (49°F)	2 mm (0.1 inches)	74%	high
August Weather	12°C (54°F)	24 mm (1.0 inches)	66%	very high
September Weather	15°C (60°F)	25 mm (1.0 inches)	75%	extreme
October Weather	16°C (62°F)	73 mm (2.9 inches)	80%	extreme
November Weather	18°C (64°F)	108 mm (4.3 inches)	86%	extreme
December Weather	18°C (65°F)	172 mm (6.8 inches)	86%	extreme