Johannesburg Weather in September

Johannesburg sits on the Highveld plateau at approximately 1,750m above sea level, giving it a subtropical highland climate with warm, thunderstorm-prone summers and dry, crisp winters with frequent frost. The city straddles the continental divide between the Limpopo and Vaal river systems, creating subtle drainage and elevation differences that influence local weather patterns. The world's largest urban forest — over 10 million planted trees — significantly modifies temperatures across the city, while mine dumps, ridges, and vast disparities in building density create pronounced microclimate variation between neighborhoods.

Excellent shoulder season — warm with fewer tourists in many destinations.