April Weather in Heilbron, South Africa

Last updated: August 31, 2025

In Heilbron, South Africa, the average temperature in April hovers around 16°C (62°F), offering a comfortable climate. During this time, temperatures can dip as low as 3°C (38°F) or soar to a warm 31°C (88°F). Expect 66 mm (2.6 in) of precipitation spread over 9 days, contributing to an average humidity of 81%. Whether you’re planning for the warm sun or the occasional rain, be prepared for a delightful mix of weather!

April Temperature in Heilbron

In April in Heilbron, the average temperature is 16°C (62°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 3°C (38°F). Pack accordingly to enjoy the pleasant days while being prepared for cooler evenings!

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

The chart illustrates April temperature patterns in Heilbron, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heilbron, April typically has an average temperature of 16°C (62°F), with highs reaching up to 31°C (88°F) and lows dropping to around 3°C (38°F).

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

April Precipitation in Heilbron

In Heilbron in April, the precipitation amount is 66 mm (2.6 in) over the course of 9 days.

April Precipitation Trends in Heilbron

The chart displays monthly precipitation patterns in Heilbron, 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 Heilbron, April typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Heilbron

In Heilbron 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 Heilbron

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

In Heilbron in April, 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 Heilbron.

Maximum UV Index Levels in Heilbron for April

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

Data source: Heilbron 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 Heilbron Compares to Other Months

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

This table compares monthly weather conditions in Heilbron, 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 (70°F)	109 mm (4.3 inches)	79%	extreme
February Weather	21°C (70°F)	114 mm (4.5 inches)	77%	extreme
March Weather	20°C (67°F)	70 mm (2.8 inches)	77%	extreme
April Weather	16°C (62°F)	66 mm (2.6 inches)	81%	extreme
May Weather	13°C (56°F)	11 mm (0.4 inches)	82%	high
June Weather	10°C (50°F)	8 mm (0.3 inches)	73%	moderate
July Weather	10°C (50°F)	3 mm (0.1 inches)	71%	high
August Weather	13°C (56°F)	7 mm (0.3 inches)	68%	very high
September Weather	17°C (63°F)	7 mm (0.3 inches)	74%	extreme
October Weather	19°C (66°F)	53 mm (2.1 inches)	74%	extreme
November Weather	20°C (69°F)	91 mm (3.6 inches)	82%	extreme
December Weather	21°C (69°F)	160 mm (6.3 inches)	81%	extreme