The opener smashed 124 to help the Proteas to their highest ever ODI total when they reached 375-6 against the Irish in the second ODI in Gqeberha.
Wolvaardt then scored an unbeaten 100 as the home side chased down a target of 206 in third match as the Proteas sealed a series clean sweep.
Her form has continued on from an outstanding World Cup campaign earlier this year, where the Proteas skipper scored centuries in the semi-final and final before her team finished as runners-up to co-hosts India.
Sune Luus (up seven places to 34th) and Dane van Niekerk (up 24 places to 95th) are the other Proteas players to have made progress in the batting rankings.
The bowling rankings, seamer Tumi Sekhukhune jumped from from 78th to 67th after bagging three wickets in the two matches this past week.
South Africa wrapped up a comprehensive 3-0 series sweep over Ireland in Friday's final one-day international at the Wanderers, securing a six-wicket win after comfortably chasing down 206.
Laura Wolvaardt and Sune Luus struck centuries as the Proteas Women posted their highest ever ODI total before beating Ireland by 74 runs in Gqeberha to take an unassailable 2-0 lead in the series.
Miane Smit struck a maiden fifty while Sune Luus also struck an unbeaten half-century as the Proteas Women cruised to a seven-wicket win in the opening ODI against Ireland at Buffalo Park in East London.
Captain Laura Wolvaardt struck a record-breaking century to help the Proteas Women thrash Ireland by 105 runs in the first of three T20Is played at Newlands on Friday.
