Mean annual rainfall increased over parts of Namibia, Botswana and southern Angola during 1980-2015 by between 128 and 256 mm . Since the 1960s, decreasing precipitation trends have been detected over the South African winter rainfall region  and the far eastern parts of South Africa  . The frequency of dry spells and agricultural drought in the region has increased over the period 1961-2016 , the frequency of meteorological drought increased by between 2.5-3 events per decade since 1961  and the probability of the multi-year drought over the southwestern cape of South Africa increased by a factor of three  in response to global warming . The number and intensity of extreme precipitation events have increased over the last century , and in the Karoo region of southern South Africa, long-term station data show an increasing trend in annual rainfall of greater than 5 mm per decade over the period 1921-2015 .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report