January Weather in Randburg, South Africa

Last updated: August 31, 2025

In January, the average temperature in Randburg, South Africa hovers around 21°C (71°F), providing a pleasant climate for outdoor activities. Temperatures can vary significantly, with a minimum of 10°C (51°F) and a maximum reaching 35°C (95°F). Expect around 118 mm (4.7 in) of precipitation over 12 days, contributing to an average humidity level of 79%, which enhances the lushness of the region.

January Temperature in Randburg

In January in Randburg, the average temperature is 21°C (71°F), with maximums reaching 35°C (95°F) and minimums dropping to as low as 10°C (51°F). This weather makes Randburg an ideal destination for travelers seeking warm days and cooler evenings.

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

The chart illustrates January temperature patterns in Randburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Randburg, January typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 10°C (51°F).

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

January Precipitation in Randburg

In Randburg in January, the total precipitation amount is 118 mm (4.7 in) over the course of 12 days.

January Precipitation Trends in Randburg

The chart displays monthly precipitation patterns in Randburg, 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 Randburg, January typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 12 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 Randburg

In Randburg in January humidity is 79%. With an average temperature of 21°C (71°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel laborious and exhausting. Travelers should be prepared to hydrate frequently and take breaks in shaded areas to fully enjoy their time exploring.

January Average Humidity in Randburg

This chart illustrates the average monthly humidity levels in Randburg, 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 Randburg is approximately 79%, 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 Randburg

In Randburg 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 Randburg.

Maximum UV Index Levels in Randburg for January

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

Data source: Randburg 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 Randburg Compares to Other Months

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

This table compares monthly weather conditions in Randburg, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (71°F)	118 mm (4.7 inches)	79%	extreme
February Weather	21°C (70°F)	122 mm (4.8 inches)	77%	extreme
March Weather	20°C (68°F)	71 mm (2.8 inches)	77%	extreme
April Weather	17°C (63°F)	50 mm (2.0 inches)	81%	very high
May Weather	14°C (58°F)	10 mm (0.4 inches)	82%	high
June Weather	11°C (53°F)	6 mm (0.2 inches)	73%	high
July Weather	11°C (52°F)	2 mm (0.1 inches)	71%	high
August Weather	14°C (58°F)	2 mm (0.1 inches)	68%	very high
September Weather	18°C (65°F)	6 mm (0.2 inches)	74%	extreme
October Weather	19°C (67°F)	52 mm (2.0 inches)	74%	extreme
November Weather	21°C (70°F)	77 mm (3.0 inches)	82%	extreme
December Weather	21°C (70°F)	131 mm (5.2 inches)	81%	extreme