August Weather in Heidelberg, South Africa

Last updated: August 31, 2025

In Heidelberg, South Africa, the average temperature in August hovers around 14°C (57°F), making it a generally mild time of year. You can expect temperatures to vary, with a minimum of -2°C (29°F) and reaching a maximum of 28°C (82°F). Precipitation is scarce, with just 2 mm (0.1 in) expected over 0 days, while the average humidity sits at a comfortable 68%.

August Temperature in Heidelberg

In August in Heidelberg, the average temperature is 14°C (57°F), with maximums reaching up to 28°C (82°F) and minimums dipping as low as -2°C (29°F). This diverse temperature range makes Heidelberg an interesting destination for travelers who enjoy experiencing varying weather conditions.

August Weather in Heidelberg: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Heidelberg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heidelberg, August typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (82°F) and lows dropping to around -2°C (29°F).

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

August Precipitation in Heidelberg

In Heidelberg in August, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

August Precipitation Trends in Heidelberg

The chart displays monthly precipitation patterns in Heidelberg, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Heidelberg, August typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Heidelberg

In Heidelberg in August, humidity is 68%. With an average temperature of 14°C (57°F), this humidity feels like a mild embrace, making travel enjoyable yet occasionally a bit sticky, ideal for leisurely strolls but requiring a light layer for comfort.

August Average Humidity in Heidelberg

This chart illustrates the average monthly humidity levels in Heidelberg, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Heidelberg is approximately 68%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Heidelberg

In Heidelberg in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Heidelberg.

Maximum UV Index Levels in Heidelberg for August

The chart shows the monthly maximum UV Index (UVI) for Heidelberg in August, 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 August, the maximum UV index in Heidelberg typically reaches 9, which falls under the very high exposure category.

Data source: Heidelberg August 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 August Weather in Heidelberg Compares to Other Months

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

This table compares monthly weather conditions in Heidelberg, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (69°F)	121 mm (4.8 inches)	79%	extreme
February Weather	20°C (69°F)	126 mm (5.0 inches)	77%	extreme
March Weather	19°C (67°F)	72 mm (2.8 inches)	77%	extreme
April Weather	16°C (62°F)	60 mm (2.4 inches)	81%	very high
May Weather	13°C (56°F)	14 mm (0.5 inches)	82%	high
June Weather	11°C (51°F)	5 mm (0.2 inches)	73%	high
July Weather	10°C (51°F)	2 mm (0.1 inches)	71%	high
August Weather	14°C (57°F)	2 mm (0.1 inches)	68%	very high
September Weather	18°C (64°F)	9 mm (0.4 inches)	74%	extreme
October Weather	19°C (66°F)	66 mm (2.6 inches)	74%	extreme
November Weather	20°C (69°F)	106 mm (4.2 inches)	82%	extreme
December Weather	20°C (69°F)	156 mm (6.1 inches)	81%	extreme