September Weather in Postmasburg, South Africa

Last updated: August 31, 2025

In September, the average temperature in Postmasburg, South Africa is a mild 17°C (64°F). However, be prepared for temperature fluctuations, as it can drop to a chilly -2°C (28°F) or rise to a scorching 35°C (95°F). With an average humidity of 47%, the climate feels relatively comfortable, complemented by minimal precipitation of only 3 mm (0.1 in) over the course of 0 days.

September Temperature in Postmasburg

In September in Postmasburg, the average temperature is 17°C (64°F), with maximums reaching up to 35°C (95°F) and minimums dropping as low as -2°C (28°F). Be prepared for a wide range of temperatures during your travels, and pack accordingly to enjoy your time in Postmasburg.

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

The chart illustrates September temperature patterns in Postmasburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Postmasburg, September typically has an average temperature of 17°C (64°F), with highs reaching up to 35°C (95°F) and lows dropping to around -2°C (28°F).

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

September Precipitation in Postmasburg

In Postmasburg in September, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

September Precipitation Trends in Postmasburg

The chart displays monthly precipitation patterns in Postmasburg, 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 Postmasburg, September typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 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 Postmasburg

In Postmasburg in September, humidity is 47%. With an average temperature of 17°C (64°F), this humidity feels like a refreshing embrace, making it pleasant for outdoor activities and sightseeing, allowing travelers to explore comfortably without feeling sticky or overheated.

September Average Humidity in Postmasburg

This chart illustrates the average monthly humidity levels in Postmasburg, 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 Postmasburg is approximately 47%, 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 Postmasburg

In Postmasburg 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 Postmasburg.

Maximum UV Index Levels in Postmasburg for September

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

Data source: Postmasburg 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 Postmasburg Compares to Other Months

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

This table compares monthly weather conditions in Postmasburg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	74 mm (2.9 inches)	58%	extreme
February Weather	24°C (75°F)	76 mm (3.0 inches)	58%	extreme
March Weather	22°C (72°F)	38 mm (1.5 inches)	65%	extreme
April Weather	18°C (65°F)	54 mm (2.1 inches)	75%	very high
May Weather	14°C (58°F)	3 mm (0.1 inches)	76%	high
June Weather	11°C (52°F)	2 mm (0.1 inches)	68%	moderate
July Weather	11°C (51°F)	2 mm (0.1 inches)	61%	high
August Weather	12°C (54°F)	1 mm (0.1 inches)	53%	very high
September Weather	17°C (64°F)	3 mm (0.1 inches)	47%	extreme
October Weather	20°C (69°F)	16 mm (0.6 inches)	36%	extreme
November Weather	23°C (73°F)	23 mm (0.9 inches)	42%	extreme
December Weather	24°C (76°F)	61 mm (2.4 inches)	52%	extreme