Ben Duckett's century was in vain as England's batting collapse and the rain contributed to them ultimately losing the ODI series to Australia.
Brendon McCullum will be the coach of England in all three formats from the start of next year, taking over from Matthew Mott as white-ball head coach.
Australia achieved their quickest-ever One-Day international triumph on home turf by trouncing West Indies with an eight-wicket victory in Canberra.
Batting coach JP Duminy insists the Proteas are still "trying to build a brand" in the 50-over format after a chastening defeat to India in the first ODI at the Wanderers.
India thrashed the Proteas by eight wickets in the opening One-Day International at the Wanderers after bowling the hosts out for just 116.
Ireland have agreed to play a second Test match against Sri Lanka next month, replacing a pair of scheduled ODIs.