January Weather in Adelaide, South Africa

Last updated: August 31, 2025

In Adelaide, South Africa, the average temperature in January hovers around 22°C (71°F). However, it can display a range from a cool 9°C (49°F) to a sweltering 42°C (108°F). Expect a total precipitation of 68 mm (2.7 in) spread across 11 days, contributing to the region's average humidity of a cozy 80%.

January Temperature in Adelaide

In January in Adelaide, the average temperature is 22°C (71°F). The maximum can reach 42°C (108°F), and the minimum can be as low as 9°C (49°F). Be prepared for a diverse range of weather conditions to ensure a comfortable and enjoyable trip.

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

The chart illustrates January temperature patterns in Adelaide, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Adelaide, January typically has an average temperature of 22°C (71°F), with highs reaching up to 42°C (108°F) and lows dropping to around 9°C (49°F).

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

January Precipitation in Adelaide

In Adelaide in January, the total precipitation amount is 68 mm (2.7 in) spread over a duration of 11 days.

January Precipitation Trends in Adelaide

The chart displays monthly precipitation patterns in Adelaide, 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 Adelaide, January typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Adelaide

In Adelaide in January, humidity is 80%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket, making travel slightly uncomfortable as skin becomes clammy and sweat clings to clothes.

January Average Humidity in Adelaide

This chart illustrates the average monthly humidity levels in Adelaide, 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 Adelaide is approximately 80%, 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 Adelaide

In Adelaide 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 Adelaide.

Maximum UV Index Levels in Adelaide for January

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

Data source: Adelaide 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 Adelaide Compares to Other Months

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

This table compares monthly weather conditions in Adelaide, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (71°F)	68 mm (2.7 inches)	80%	extreme
February Weather	22°C (71°F)	91 mm (3.6 inches)	79%	extreme
March Weather	20°C (69°F)	62 mm (2.5 inches)	86%	extreme
April Weather	17°C (63°F)	57 mm (2.2 inches)	85%	very high
May Weather	16°C (60°F)	28 mm (1.1 inches)	84%	high
June Weather	14°C (58°F)	5 mm (0.2 inches)	79%	moderate
July Weather	13°C (56°F)	12 mm (0.5 inches)	77%	moderate
August Weather	13°C (55°F)	24 mm (1.0 inches)	72%	high
September Weather	16°C (60°F)	39 mm (1.5 inches)	79%	very high
October Weather	17°C (63°F)	60 mm (2.4 inches)	77%	extreme
November Weather	18°C (65°F)	60 mm (2.4 inches)	78%	extreme
December Weather	20°C (68°F)	70 mm (2.8 inches)	80%	extreme