Early forecasting from the South African Weather Service (SAWS) and Gauteng Weather suggests that Gauteng could experience freezing temperatures from Tuesday, 13 July.
Gauteng Weather first predicted that sub-polar air from north of the Antarctic could cause a dramatic drop in temperatures in the province and the central parts of South Africa “due to a very intense high-pressure system” on 10 July.
By 11 July, the “no. 1 regional weather forecaster in South Africa” was reporting that the “worst cold snap so far in 2021” could be expected in Gauteng from Tuesday, 13 July.
The South African Weather Service (SAWS) also added that cold and sub-polar weather conditions are expected to affect most parts of the country this week.
“Again, to Wednesday, the temperatures are still dropping, and it will be a bare minimum that will go to minus for Gauteng, North West as well as outside of Mpumalanga,” said weather forecaster Lulana Theme to a Gauteng radio station.
Gauteng Weather predicts that the cold weather will begin in earnest on Tuesday when the sub-polar air hits the region.
Johannesburg residents should brace themselves for a below-freezing minimum temperature of -1°C on Tuesday with temperatures expected to rise to a maximum of 11°C. In Johannesburg, the low on Wednesday is expected to be -3°C with a high of 13°C.
The weather is expected to begin warming up from Thursday onwards.
⚠️ ALERT: INTENSE WINTER STORM AHEAD!!!
— Gauteng Weather (@tWeatherSA) July 11, 2021
🛰🥶🥶 STRONG COLD FRONT makes landfall in the Cape! BLAST OF ICY NEAR-POLAR AIR MOVES INTO 🇿🇦, with CORE OF POWERFUL GAUTENG-BOUND SYSTEM anchored just north of Antarctica & aided by high!!! | 📸 NASA pic.twitter.com/AIEXfoX89O
— Gauteng Weather (@tWeatherSA) July 12, 2021