April Weather in Williston, South Africa

Last updated: August 31, 2025

In April, the average temperature in Williston, South Africa is a comfortable 18°C (65°F). Expect a range of temperatures with a minimum of 4°C (40°F) and a maximum reaching 35°C (95°F). During this month, you can anticipate 28 mm (1.1 in) of precipitation spread over 2 days, coupled with an average humidity of 72%. Perfect for enjoying the distinctive climate of your chosen destination!

April Temperature in Williston

In April, in Williston, the average temperature is 18°C (65°F). Maximums can reach 35°C (95°F), and minimums can be as low as 4°C (40°F). This range makes Williston an ideal destination for travelers seeking a pleasant climate for outdoor activities and exploration.

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

The chart illustrates April temperature patterns in Williston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williston, April typically has an average temperature of 18°C (65°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (40°F).

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

April Precipitation in Williston

In Williston in April, the total precipitation amount is 28 mm (1.1 in) over the course of 2 days.

April Precipitation Trends in Williston

The chart displays monthly precipitation patterns in Williston, 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 Williston, April typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 2 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 Williston

In Williston in April humidity is 72%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace, making traveling somewhat uncomfortable as the air clings to your skin and the heat can be stifling, yet it's perfect for enjoying leisurely strolls under the shade.

April Average Humidity in Williston

This chart illustrates the average monthly humidity levels in Williston, 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 Williston is approximately 72%, 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 Williston

In Williston in April, 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 Williston.

Maximum UV Index Levels in Williston for April

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

Data source: Williston 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 Williston Compares to Other Months

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

This table compares monthly weather conditions in Williston, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	10 mm (0.4 inches)	50%	extreme
February Weather	25°C (78°F)	11 mm (0.4 inches)	55%	extreme
March Weather	23°C (73°F)	15 mm (0.6 inches)	65%	extreme
April Weather	18°C (65°F)	28 mm (1.1 inches)	72%	very high
May Weather	15°C (59°F)	6 mm (0.2 inches)	78%	high
June Weather	11°C (53°F)	5 mm (0.2 inches)	79%	moderate
July Weather	10°C (51°F)	8 mm (0.3 inches)	73%	moderate
August Weather	11°C (52°F)	2 mm (0.1 inches)	64%	high
September Weather	15°C (60°F)	5 mm (0.2 inches)	58%	extreme
October Weather	19°C (66°F)	13 mm (0.5 inches)	53%	extreme
November Weather	21°C (70°F)	6 mm (0.2 inches)	42%	extreme
December Weather	23°C (74°F)	11 mm (0.5 inches)	44%	extreme