The Proteas ladies secured a 2-0 series win in their three-match series after bad weather did not allow for play on the third T20I match of the tournament.
South Africa had taken an unassailable lead following their 65-run win in their second T20 clash of the series in Paarl.
Both teams will now turn their attention to the upcoming three match One Day International [ODI] series which starts on Saturday at Buffalo Park in East London.