January Weather in Williston, South Africa

Last updated: August 31, 2025

In January, the average temperature in Williston, South Africa hovers around 26°C (79°F), making it a delightful time to explore. However, be prepared for temperature fluctuations, with a minimum of 10°C (50°F) and a scorching maximum of 42°C (107°F). Rainfall is light, with only 10 mm (0.4 in) expected over 2 days, while the average humidity sits at a comfortable 50%.

January Temperature in Williston

In January in Williston, the average temperature is 26°C (79°F). Maximum temperatures can reach 42°C (107°F), while the minimum can drop to as low as 10°C (50°F). Travelers should be prepared for a wide range of temperatures during their visit.

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

The chart illustrates January 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, January typically has an average temperature of 26°C (79°F), with highs reaching up to 42°C (107°F) and lows dropping to around 10°C (50°F).

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

January Precipitation in Williston

In Williston in January, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

January Precipitation Trends in Williston

The chart displays monthly precipitation patterns in Williston, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Williston, January typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Williston

In Williston in January humidity is 50%. With an average temperature of 26°C (79°F), this humidity feels like a pleasant warmth that envelops you, making it ideal for leisurely strolls and exploration, though you may find yourself seeking shade or a refreshing drink after a few hours of outdoor activity.

January Average Humidity in Williston

This chart illustrates the average monthly humidity levels in Williston, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Williston is approximately 50%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Williston

In Williston in January, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Williston.

Maximum UV Index Levels in Williston for January

The chart shows the monthly maximum UV Index (UVI) for Williston in January, 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 January, the maximum UV index in Williston typically reaches 15, which falls under the extreme exposure category.

Data source: Williston January 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 January 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 January’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 January’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