December in Mpumalanga averages a daily high of 28°C with nights around 20.1°C. Expect roughly 17.4 wet days totalling 133.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Mpumalanga is May–August.
Based on DURBAN INTERNATIONAL, SF (35km), 1995–2024. 25 years of December data.