He has amassed 886 runs in his 35 T20 matches for the County with a best of 98 at an impressive strike rate of 141. In 2022 he became the first batter to score 100 in The Hundred.
The West Indian pacer is set to debut against Surrey at Scarborough on Monday, before taking on Somerset at Taunton and then playing Hampshire at North Marine Road later this month.
Wolvaardt was one of nine South Africa players that earned a first Test cap during the drawn four-day clash against England in Taunton last month, with the classy right-hander contributing scores of 16 in both innings.
Alice Davidson-Richards, who smashed a brilliant century in the Taunton Test has also earned a recall to the ODI side. She last played the format in 2018 against India.
Uncapped quick Issy Wong is upgraded from the reserve list and into the 13-player squad for the four-day clash that starts in Taunton on Monday and is in contention to claim the spots left vacant by recently retired duo Anya Shrubsole and Katherine Brunt.
The Test match forms the first part of the multi-format series, with four points available for the game and two points available for each white-ball game.