April Weather in Heidelberg, South Africa

Last updated: August 31, 2025

In April, the average temperature in Heidelberg, South Africa is a pleasant 16°C (62°F). However, be prepared for a range, as temperatures can dip to a minimum of 2°C (36°F) and soar to a maximum of 30°C (86°F). Expect 60 mm (2.4 in) of precipitation spread over 9 days, contributing to an average humidity of 81%.

April Temperature in Heidelberg

In April in Heidelberg, the average temperature is 16°C (62°F), with maximums reaching 30°C (86°F) and minimums dropping as low as 2°C (36°F). It's a great time to visit for mild weather, making it perfect for outdoor activities and exploration.

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

The chart illustrates April 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, April typically has an average temperature of 16°C (62°F), with highs reaching up to 30°C (86°F) and lows dropping to around 2°C (36°F).

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

April Precipitation in Heidelberg

In Heidelberg in April, the total precipitation amount is 60 mm (2.4 in), occurring over a span of 9 days.

April Precipitation Trends in Heidelberg

The chart displays monthly precipitation patterns in Heidelberg, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Heidelberg, April typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Heidelberg

In Heidelberg in April, humidity is 81%. With an average temperature of 16°C (62°F), this humidity feels like a warm embrace that can quickly leave travelers feeling sticky and drained, making outdoor adventures a bit challenging unless they stay properly hydrated and take breaks in the shade.

April Average Humidity in Heidelberg

This chart illustrates the average monthly humidity levels in Heidelberg, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Heidelberg is approximately 81%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Heidelberg

In Heidelberg in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Heidelberg.

Maximum UV Index Levels in Heidelberg for April

The chart shows the monthly maximum UV Index (UVI) for Heidelberg in April, 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 April, the maximum UV index in Heidelberg typically reaches 10, which falls under the very high exposure category.

Data source: Heidelberg April 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 April 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 April’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 April’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