Statistics South Africa publishes second quarter gross domestic product figures on Tuesday at 0930 GMT. Africa's most developed economy contracted 3.2% in quarter, hit by nationwide power outages by cash-strapped state power firm Eskom. A Reuters poll of economists forecasts Q2 GDP expanding 2.4%.
"Much of this expected lift would be attributable to statistical base effects and the stabilisation of electricity supply rather than to a sustainable turnaround in economic activity," said Lara Hodes of Investec. The ongoing trade spat between China and the United States has also dampened demand for emerging currencies.
The United States slapped 15% tariffs on a variety of Chinese goods on Sunday - including footwear, smart watches and flat-panel televisions - while China imposed new duties on US crude oil, heightening fears of a global economic slowdown.