September Weather in Delmas, South Africa

Last updated: August 31, 2025

In September, the average temperature in Delmas, South Africa hovers around 18°C (64°F), with daytime highs reaching up to 32°C (91°F) and potential lows dipping to 1°C (34°F). Expect a bit of wet weather, as 11 mm (0.4 in) of precipitation typically falls over 3 days. The average humidity sits comfortably at 74%, making for a breezy yet humid atmosphere.

September Temperature in Delmas

In September, in Delmas, the average temperature is 18°C (64°F). Maximums can reach 32°C (91°F) and minimums can drop as low as 1°C (34°F). Travelers should be prepared for a range of temperatures, making layers a wise choice for their visit.

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

The chart illustrates September temperature patterns in Delmas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Delmas, September typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (91°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Delmas

In Delmas in September, the precipitation amount is 11 mm (0.4 in) over the course of 3 days.

September Precipitation Trends in Delmas

The chart displays monthly precipitation patterns in Delmas, 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 Delmas, September typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 3 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Delmas

In Delmas in September humidity is 74%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls but potentially uncomfortable for extended outdoor activities.

September Average Humidity in Delmas

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

In Delmas 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 Delmas.

Maximum UV Index Levels in Delmas for September

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

Data source: Delmas 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 Delmas Compares to Other Months

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

This table compares monthly weather conditions in Delmas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	111 mm (4.4 inches)	79%	extreme
February Weather	20°C (68°F)	124 mm (4.9 inches)	77%	extreme
March Weather	19°C (66°F)	68 mm (2.7 inches)	77%	extreme
April Weather	16°C (62°F)	53 mm (2.1 inches)	81%	extreme
May Weather	13°C (56°F)	17 mm (0.7 inches)	82%	high
June Weather	11°C (51°F)	4 mm (0.2 inches)	73%	high
July Weather	11°C (51°F)	1 mm (0.1 inches)	71%	high
August Weather	14°C (58°F)	3 mm (0.1 inches)	68%	very high
September Weather	18°C (64°F)	11 mm (0.4 inches)	74%	extreme
October Weather	19°C (66°F)	73 mm (2.9 inches)	74%	extreme
November Weather	20°C (67°F)	98 mm (3.8 inches)	82%	extreme
December Weather	20°C (68°F)	164 mm (6.5 inches)	81%	extreme