January Weather in Randfontein, South Africa

Last updated: August 31, 2025

In Randfontein, South Africa, the average temperature in January hovers around 21°C (70°F), with a range that can dip to a chilly 9°C (49°F) and peak at a warm 34°C (94°F). Expect 129 mm (5.1 in) of precipitation over 14 days, and be prepared for a humidity level of around 79% – perfect for enjoying those lush, vibrant surroundings!

January Temperature in Randfontein

In January in Randfontein, the average temperature is 21°C (70°F), with maximums reaching 34°C (94°F) and minimums dipping as low as 9°C (49°F). This pleasant climate makes it an ideal time for travelers to explore the area and enjoy outdoor activities.

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

The chart illustrates January temperature patterns in Randfontein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Randfontein, January typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 9°C (49°F).

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

January Precipitation in Randfontein

In Randfontein in January, the precipitation amount is 129 mm (5.1 in) over the course of 14 days.

January Precipitation Trends in Randfontein

The chart displays monthly precipitation patterns in Randfontein, 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 Randfontein, January typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 14 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 Randfontein

In Randfontein in January humidity is 79%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making outdoor exploration a bit sticky but still enjoyable for travelers who appreciate the lush, vibrant atmosphere.

January Average Humidity in Randfontein

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

In Randfontein in January, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Randfontein.

Maximum UV Index Levels in Randfontein for January

The chart shows the monthly maximum UV Index (UVI) for Randfontein 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 Randfontein typically reaches 16, which falls under the extreme exposure category.

Data source: Randfontein 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 Randfontein Compares to Other Months

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

This table compares monthly weather conditions in Randfontein, 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 (70°F)	129 mm (5.1 inches)	79%	extreme
February Weather	20°C (68°F)	141 mm (5.5 inches)	77%	extreme
March Weather	19°C (66°F)	75 mm (3.0 inches)	77%	extreme
April Weather	16°C (62°F)	61 mm (2.4 inches)	81%	extreme
May Weather	13°C (56°F)	12 mm (0.5 inches)	82%	high
June Weather	11°C (52°F)	8 mm (0.3 inches)	73%	high
July Weather	10°C (51°F)	3 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)	8 mm (0.3 inches)	74%	extreme
October Weather	19°C (66°F)	59 mm (2.3 inches)	74%	extreme
November Weather	20°C (69°F)	100 mm (4.0 inches)	82%	extreme
December Weather	20°C (69°F)	145 mm (5.7 inches)	81%	extreme