"The currency and South African government bonds have been on a good run over the last week on easing political risk, and this remains the key driver", said Christopher Shiells, an analyst at Informa Global Markets in London.
Stocks were set to open lower at 0700 GMT, with the JSE securities exchange's benchmark Top-40 futures index down 0.9 percent.
Naspers came under pressure after weakness in Chinese internet company Tencent and extended losses to close down 3 percent at 3,520 rand after a US law firm launched an inquiry on behalf of shareholders into whether it engaged in securities fraud or other unlawful businesses practices.
ICC suspend Mohammad Shahzad for 1 year
Shahzad had already been provisionally suspended after his urine sample was found to have a banned substance Clenbuterol. Shahzad has made a combined 116 appearances for Afghanistan across the Twenty20 and one-day worldwide formats.
Meanwile, the rand traded at 13.5100 per dollar at 1517 GMT, compared to a close of 13.5225 overnight in NY.
A currency trader said the rand was supported by better-than-expected third-quarter economic growth data, but he said importers buying foreign currency was a drag.
It's a sign that investors don't care so much for economics right now as they do for politics, focusing more on the ruling African National Congress's December 16-20 conference, when it will choose a new party leader to replace President Jacob Zuma.
Tahirul Qadri urges PAT workers to remain ready for protest
He further said that Tahir-ul-Qadri will devise strategy regarding protest after consulting his lawyers and core committee.
But it is far from certain that Ramaphosa will secure victory. "There could be volatility in the rand should it disappoint".
Government bonds were firmer in early trade, with the yield for the benchmark instrument due in 2026 down 5 basis points to 9.185 percent.
PS4 sales reach epic new milestone as plans for 2018 take shape
Finally , the company said it has sold more than 12.2 million copies of the 150 games releases for the PSVR through December 3rd. Coming off a record Black Friday season, Sony has revealed new sales info for PS4, PS VR, and software for both platforms.